4/1994 Coll.
DECREE
The Czech Mining Authority
of 6 May 1999. December 1993,
laying down the requirements for the design and construction of buildings and equipment
for divorce and the isolation of the winds and the closure of mine workings
Change: 90/2003 Coll.
Change: 176/2011 Sb.
The Czech mining Office lays down pursuant to § 6 paragraph 1. 6 (a). Czech law)
the National Council No. 61/1988 Coll. on mining activities, explosives and
the State Mining Administration, as amended by Act of the Czech National Council No. 424/1991
Coll., Act of the Czech National Council No. 542/1991 Coll. and Act No. 171/1993
Coll.:
PART THE FIRST
General provisions
§ 1
The subject of the edit
(1) this Ordinance applies to the design, manufacture and provisioning
větrních and hrázových objects to the coal mines. Specifies the technical and
safety requirements for wind and hrázové objects and equipment
hrázových objects.
(2) this Ordinance shall not apply to the conclusion of the main mine workings ^ 1) and
the closure of old mine workings. "^ 1a)
(3) this Ordinance has been notified in accordance with the directive of the European
Parliament and Council Directive 98/34/EC of 22 December 2004. June 1998 on the procedure for
the provision of information in the field of standards and technical regulations and legislation
for information society services, as amended by Directive 98/48/EC.
§ 2
Interpretation of the terms
For the purposes of this Ordinance shall be deemed to
and wind nevýbuchuvzdorný mine object) structure and equipment
intended to guide the větrního stream in the mine. It is the wind locks,
wind the insulating doors and wind control door and control devices,
(b) wind Cap construction) the object specified by the nevýbuchuvzdornému and the tight
the conclusion of the abandoned mine workings and the mined out area, c) wind door
nevýbuchuvzdorné door is used to control or isolate větrních streams
in mining with regular walking or transportation,
(d)) hrázový object výbuchuvzdorný object to mining building
channeling větrního stream in the mine. They are the hrázové door hrázové
the door with the passage for the conveyor, sealing and insulating walls
e) equipment hrázového object product and equipment intended to be incorporated
or hanging on the hrázový object to allow transit traffic
resources, pass or hatchway people, mine water drainage, sampling
samples of the mining pollution, flow of the winds and the like. They are hrázové
doors, hatches, hrázové plate ducting, passages for conveyors, hrázové
průvětrníky and other pipes,
f hrázové door výbuchuvzdorné door) that is used to control or isolate
větrních currents in mining with regular walking or transportation,
g) control device object used to control the volume of water flow
mining of the winds in the wind network,
h) closing the barrier of the building object to the tight and výbuchuvzdornému
the conclusion of the abandoned mine workings and the mined out area
I) insulating barrier construction výbuchuvzdorný the object specified by the výbuchuvzdorné
the isolation of the mine workings provided with hatch, hrázovou lutnou, the passage for
conveyor or hrázovým průvětrníkem,
j hrázovou lutnu výbuchuvzdorná lutna) round designed for
hatch dam,
hatch insulation object to) equipment fitted to the výbuchuvzdorné
the dam is used for the passage of and transport of equipment and material
l channel) for object isolation device for conveyor
výbuchuvzdornou isolation of the mining works with belt transport coal,
m) hrázový průvětrník pipe equipped with protivýbuchovou safety
klapou,
n) emergency pipeline, which is intended for the transport of inert
gases, or other materials in a confined space,
the cable duct,) which is intended for the passage of the force,
communication and control cables,
p) peření impassable wind bonding for tight closure of mine
or the regulation of the větrního stream, used either alone or as part of the
another object,
r) wind barrier longitudinal bulkhead used in podružném ventilation
mine workings,
with the wind curtain device) to control the volume flow of the winds, on
that is not subject to the requirements of tightness,
t) type of reinforcement rib forming a regular bar filled základkovou
matter,
u) wind wind blockage in your desk to avoid distortion of bond větrního
stream or for the conclusion of the excavation, which is not subject to
requirements for tightness.
PART TWO
Wind objects
§ 3
Wind bond
(1) Wind bonding, according to construction and the material used is divided
on
and the brick or brick) blocks,
(b)), plavenou
(c)) from rychletuhnoucích and special materials,
(d)), kulákovou
e) combined,
(f)) peření.
(2) Wind bonding must be built on the sites of designated special
Regulation. ^ 1b) must be subject to the following conditions:
and mining work in the place) of the building wind fastenings must be secured against
the fall of rocks at a distance of at least 5 m on either side of the locks,
(b)) in the conditions, where the soil pressures are manifested, or their
speeches expected wind bonding must be made so as to acts of
the rock pressure resisted without substantial breach of her tightness,
c) wind caps of cross distance, fork or branch must be
such as to allow the parties to build accessible from closing the barrier,
(d)) at the site of construction of the wind should be caps before beginning construction
remove all unnecessary pipeline, transport equipment, cables and
relaxed rock or coal.
(3) during the construction of the closures, except those that enclose the front
the corridor when the komorovém conquest, incorporate and freeze the pipes for the subscription
samples of air and, if necessary, by other specific piping or equipment.
(4) the spaces in front of the roadblock must be maintained so that they
type-safe access to controls.
§ 4
Wind bond brick
(1) for the construction of masonry fasteners may be used
and full of bricks) minimum compressive strength of 20 MPa
(b) concrete blocks or slag concrete brick wall) on the minimum compressive strength
20 MPa
c) other materials, if you have been identified as suitable for use in
Underground ^ 2)
(d) the mortar cement or lime) with a minimum compressive strength of 10
MPA.
(2) the Walled enclosure must always be anchored around the perimeter of the mining works
the intact rock or coal pillar.
(3) the thickness of the masonry fasteners shall not be less than 15 cm to 7 m2 light
the cross-section of the mining works, above 7 m2 must not be less than 30 cm.
(4) when the masonry fasteners must be complied with the following conditions:
and come into contact with the outline of the masonry) jams or facilities closures must be filled in
without spaces; in particular, it is necessary to dozdívat the upper part of the closures and, where
It is not possible, it is necessary to fill in all the gaps and cavities with cement or
Another grouting,
(b)) should be every stone seal with cement or told you anything;
vápenocementovou mortar on the accessible side.
§ 5
Wind bond plavená
(1) For the construction of a float caps is used
and a mixture of fly ash and water),
(b)) a mixture of fly ash, cement and water; the weight ratio of fly ash and cement 4:1
up to 1:1,
c) other materials, if you have been identified as suitable for use in
underground. ^ 2)
(2) the Plavená bond is established by flooding the area of the mining works
defined by a pair of filter peření plavicí mixtures, inclined
mining, where the inclination of mine is allowed per filter
peření with the fact that the thickness of the caps is measured under the ceiling of the mining works.
(3) when establishing a float fastenings must be subject to the following conditions:
and the filter is to be peření) build in a shallow indentation that was built around the
the perimeter of the mine after removal of the reinforcement in place of a jam; the rest of the
reinforcement between the two peření can be left,
(b)) filling and discharge Sockets run audit pipes must be the highest point
the passage in the area of control of the pipeline closures (ústí nad filling
by pipeline),
(c)) the flooding caps must be carried out in Napoleon.
Completion of the float is in a multiple caps doplavování
closures, the most concentrated mixtures.
To speed up the flooding caps can be used to fill the space between the peřeními
stone.
§ 6
Wind bond of rychletuhnoucích and special materials
(1) for the construction of closures of rychletuhnoucích and special materials may only be
used
and the normally slow-curing) or plaster with the beginning time of solidification of 6 to 20
minutes when the mechanical transport plaster mash,
(b)) quickly, normally or slow-curing with the beginning of time freezing plaster
2 to 20 minutes when the pneumatic transport of gypsum,
(c)), anhydrite
(d)) other special materials, if you have been identified as suitable for
underground use. ^ 2)
(2) This establishes a bond of gypsum trucked into the space between
a pair of supporting peření with sádrovacího aggregate.
(3) in the construction of gypsum fastenings must be subject to the following conditions:
and) plaster bonding must always be anchored around the perimeter of the mining works
the intact rock or coal pillar
(b) filling in width and control) tubes shall be in the highest places
closures,
(c)) without breaks and plastering at all times abide by the water
coefficient (the proportion by mass of water and plaster) range from 0.6 to 0.8.
§ 7
Wind bond kuláková
(1) Wind bonding kuláková is built from blocks, stored horizontally
logs, sleepers, etc. The spacing between kulatinou are filling up long
chips or wedges.
(2) Kuláková bond must always be anchored around the perimeter of the mining
works on intact rock or coal pillar.
(3) the thickness of the kulákové fastenings must be at least 1 m.
(4) As the sealing binders are used for different qualities of clay grout up to
After the cement, prosypávání ash, bentonite, and so on.
(5) Kuláková bond with dotěsňuje plaster or thermal spraying.
§ 8
Wind bond combined
Wind bond combined is used to improve the tightness of the
větrních CAP, such as walled plaster or walled
popílkocementová.
§ 9
Peření
(1) the Peření is divided into
and close to) the tight closure of the mine,
b) regulatory control, used for the větrního stream,
c) filter, used in the construction of a swimming CAP or větrních
dykes,
d) support, used in the construction of větrních dam of closure or
rychletuhnoucích materials.
(2) For the construction of the peření is used
and props or vzepřené), firmly construction of mining wood for frame
peření,
(b)) Board lumber, landscape or pažiny for a custom design, peření
(c)) for sealing the latex, asfaltolatexová emulsion, polyurethane foam,
plaster, plastic paste of clay, bentonite, and similarly, cement mortar,
větračské canvas and other materials identified as suitable for use in
Underground ^ 2)
(d)) as the fill material for double peření dusaný clay, loose and
water prolévaný fly ash, limestone powder or another compacted material
designated as suitable for underground use ^ 2)
e) jutovina for peření filter.
(3) Peření must always be anchored around the perimeter of the mining works on the
the intact rock or coal pillar.
§ 10
Rib
(1) there shall be established from the ribbed for non-combustible rock or material intended for
use in the mine.
(2) if the material does not guarantee sufficient tightness against
delays of mining of the winds, must be vyrubaným rib dotěsněno. To
additional materials may be used in accordance with § 9 para. 2 (a). (c)), and (d)).
§ 11
Wind baffle
To build wind counters may only be used only materials or
^ 2) approved for use in the mine, for example, větračské, izopěna, canvas
bags with sand or ash.
§ 12
Wind doors
(1) according to the design of the wind door divided into
and a one,)
(b)) double.
(2) according to the material of the door leaf, the wind door divided into
and) wooden,
(b)), metal,
c) combined.
(3) according to the function and tightness of the wind door divided into
a) insulation,
(b)).
(4) the construction of the větrních door consists of
and) door leaf (wings)
(b)) to the door frame (frame), built into the walls,
(5) in the manufacture of door must be subject to the following conditions:
větrních dimensions of the door) must be chosen so that the dimensions of the light
cross section of transit match the requirements of the specific rules, ^ 3)
(b)) must be provided with the door handle,
c) wing designed for mine workings with locomotive transport must be
equipped with a mirror on both sides of the glass or film,
d) door construction shall be such that the door leaf automatically
shut,
e) full of doors must be attached to the door frame.
(6) for větrních door insulation must be the metal door frame and rail from
brick masonry with a thickness of at least 30 cm. větrních door for regulatory
can be rail and door frame and wood.
(7) For the construction of a brick partition walls, the provisions of section 4. The door frame must be in
the splitter walled up or built to automatically shut and wing
neotvíralo with depression of the winds. The door leaf is suspended after the expiry of the
necessary to acquire the strength of masonry.
section 13 of the
Control object and device
(1) regulatory object and device are
and the door, wind)
b) wind curtain, ^ 4)
(c)) peření with regulatory holes of various sizes,
d) wind dam.
(2) the construction of the regulatory větrních the door is covered by the provisions of § 12.
The size of the aperture is adjusted depending on the size of the depression and
the required volume flow of winds in individual parts.
(3) for the construction of větrních suspensions may only be used materials
^ 2) approved for use in the mines.
(4) the construction of the peření with the regulatory hole is covered by the provisions of section 9.
The size of the aperture is adjusted depending on the size of the depression and
the required volume flow of winds in each mining.
(5) the Wind dam ^ 5) shall be established in the middle of the mining works for lengthwise
Department of vtažného and výdušného větrního stream and subject to
the provisions of § 9.
PART THREE
Hrázové objects
§ 14
Výbuchuvzdornost hrázového object
(1) an object with the dimenzuje on the Výbuchuvzdorný explosion pressure Pv = 0.5 MPa.
Must vote these values of the coefficient of safety:
and) k = 1 for the object specified by the hrázových the door to the isolation of větrních streams
inside the wind area, and for closing the barrier to closing
abandoned mine workings and closures of self-ignition of coal, without the risk of
b) k = 2 for the object specified by the hrázových the door to the isolation of the individual
větrních areas, for closing the barrier to closing the mine workings and
closures of self-ignition coal and danger for the hrázový object that, when
authorisation of mining activities will determine the district mining Office.
(2) the smallest thickness of the dam (L) in meters is determined by the relation
L = 0.9. bmax. the square root of the Pv. to/sigmatl (m),
where k and Pv-shall be determined in accordance with paragraph 1,
sigmatl-minimum compressive strength used for the building
the material in the MPa,
t-the largest of the dimensions of the gross cross-section of the mining works
(height or width) in meters.
§ 15
Closing the barrier
(1) a closing dam, according to the construction and the material used is divided
on
and the brick or brick) blocks,
(b) popílkovou or plavenou)-cement,
(c)) from rychletuhnoucích or other specialty materials,
d) concrete,
e) combined.
(2) for the positioning of the dam are special prescription. ^ 6) it is necessary to
comply with the following conditions:
and mining work in the place) of the construction of the dam must be secured against falling
rocks at a distance of at least 5 m on either side of the dam,
(b)) the distance from the cross, fork or branch of the mining works must
be such as to allow the parties to build a more accessible shut-off
in case of violation of the original dam, dam,
(c) the construction of the dam) in place, it should be removed before construction
all unnecessary pipeline, transport equipment, cables and relaxed
rock or coal.
(3) during the construction of the dam is to be built, and freeze the pipes for the subscription
samples of air and, if necessary, and other special-purpose pipes, for example,
drainage, emergency, filling, inspection, injection, průlezová by
part four.
(4) the Spaces in front of the dam must be kept so that it is to the
secure access for control purposes.
section 16 of the
The closing of the walled dam
(1) For the construction of a masonry dam must be used
and full of bricks) minimum compressive strength of 20 MPa
(b) concrete blocks or slag concrete brick wall) on the minimum compressive strength
20 MPa
(c)), brick or blocks of other materials, if they have been tested on
durability of the dam explosion ^ 2)
(d) cement or lime-cement mortar) on the minimum compressive strength 10
MPA.
(2) the Brick barrier must always be anchored into the indentation around the perimeter of the mining
works. A wedge-shaped or rectangular notched up to intact rock
or coal pillar. The depth of the indentation is determined with regard to the strength of the
rocks at the site of the sinking, but at least 50 cm. In mining with
concrete reinforcement or rigid rock anchor with stud bolts can be dam
recessed to a depth of at least 0.7 m, ceiling and hips for the mining
works on 1 m2 of the mating surfaces of the dam with reinforcements he felt at least 1
Stud bolt. Bolts must be of at least 22 mm in diameter and a length of at least 1
m. Example construction of masonry dam is given in the annex to this order on the
picture No. 1 and no. 2.
(3) the thickness of the masonry dam shall be determined pursuant to § 14 para. 2. the strength of the mortar will
considering freezing after 28 days.
(4) Masonry dam must build on the foundations in the invert of the mining works or
solid rock. The entire outline of the clip must be rinsed off with water and sprinkle
cement milk.
(5) when the dam must be observed during the following conditions:
and come into contact with the outline of the masonry) jams or equipment of the dam must be filled in
without spaces; especially carefully it is necessary to dozdívat the upper part of the closures and,
where this is not possible, it is necessary to fill in all the gaps and cavities with cement
or another injection,
(b)) should be every masonry dam with cement or told you anything;
vápenocementovou mortar on the accessible side.
§ 17
Closing the barrier plavená
(1) for the construction of the dam must be used float
and a mixture of fly ash and water),
(b)) a mixture of fly ash, cement and water; the weight ratio of fly ash and cement
4:1 to 1:1,
c) other materials, if they have been approved for durability tested levees
explosion. ^ 2)
(2) Plavená barrier is established by flooding the area of excavation plavicí
a mixture between a pair of filter peření, in inclined mining where
This incline mine allows one filter peření that
the thickness of the caps is measured under the ceiling of the mining works. Example of construction
float is given in the annex to this order in the figure 3.
(3) Plavenou popílkovou dam can be considered výbuchuvzdornou first
in 2 months after completion of its construction. The minimum thickness of the float
fly ash dam regardless of the shape of the cross section of the mining works determines
as follows:
Gauge works in m2 the minimum thickness of the dam in m
------------------------------------------------------------------
less than 4 4.0
4 to 6 5.0
6 to 6.0
10 and 12 7.0
12 až14 8.0
more než14 10.0
------------------------------------------------------------------
(4) for the construction of the dam on ash float cross-section of the mining works
more than 14 m2 must be built at least two polygonal Struts
located opposite to the direction of the intended explosion, one of which must be
located in the middle of the length of the dam. In the case of the use of wooden figures
the logs must be used with a diameter of at least 25 cm.
(5) the minimum thickness of the float popílkocementové dam is determined under section
14. 2. The strength of popílkocementové fill is determined on the basis of
previous laboratory tests for each recipe. For the calculation of
the dimensioning of the dam is considered a plain pressure strength after 28 days.
(6) in establishing the float of the dam must be complied with the following conditions:
popílková dam plavená) may not be anchored zásekem; reinforcement between the
a pair of peření can be left,
(b)) plavená popílkocementová dam must Moor according to § 16 para. 2,
(c)) peření shall be sufficiently strong to withstand hydrostatic pressure
float the mixture in the space of the dam,
d) filling and discharge Sockets run audit pipes must be the highest point
the passage in the area of the dam (control the pipe above the filling pipe),
e) fly ash dam flooding is done by Napoleon
so as not to refute the peření full hydraulic pressure from the
plavicího pipe; at the top of peření accessible side is usually
leaving the check box that is concluded before completion of the supply
the dam,
f) flooding the dam popílkocementové is carried out without interruption;
If there is a break of longer than 2 hours, the entire area must be
nezatuhlé plavicí mix zapíchnuty iron bars or other armující
material to a depth of at least 0.3 m,
g) completion of the fly ash dam lies in the full-float
doplavování dam, and the most concentrated mixtures.
section 18
Closing the barrier of rychletuhnoucích and special materials
(1) for the construction of the dam of the rychletuhnoucích and special materials may only be
applied plaster or other materials, if they have been tested for durability
the dam explosion. ^ 2)
(2) this dam establishes a gypsum trucked into the space between a pair of
support peření by using the sádrovacího aggregate.
(3) the smallest thickness of the dam is to be determined pursuant to § 14 para. 2. The strength of the
determined on the basis of previous laboratory tests for the individual
mass.
(4) during the construction of the dam of plaster must be complied with the following conditions:
and) gypsum barrier must always be anchored in accordance with § 16 para. 2,
(b) filling in width and control) tubes shall be in the highest places
the dam,
(c)) without breaks and plastering at all times abide by the water
coefficient (the proportion by mass of water and plaster) range from 0.6 to 0.8;
If the break occurs when plastering longer than 10 minutes, it must be in the
the whole surface of nezatuhlé plaster zapíchnuty iron bars or other armující
material to a depth of at least 0.3 m.
§ 19
Closing the dam concrete
(1) For the construction of a concrete dam is used for monolithic concrete class
at a minimum, (B) 15.
(2) the anchoring of the concrete dam is carried out according to § 16 para. 2.
(3) the thickness of the concrete dam is determined according to § 14 para. 2. In the calculation of the
uses the strength of concrete used after 28 days of solidification.
(4) instead supporting peření can use brickwork walls.
section 20
Closing the barrier of the combined
Closing the barrier combined is used to improve the tightness of the
containment dykes.
section 20a
The closing of the dam sack
(1) the closing of the dam sack can be used when playing in the mine accident ^ 6a)
for a quick, výbuchuvzdorné and seal the affected area.
(2) for the construction of a closing dam sack can be used bags
filled with two-thirds of jemnozrnným sand (hereinafter referred to as "sand") or
ash. The weight of the filled sacks may be the most 22 kg.
(3) the dam is being built by the free bags from the rear panel by placing the dam
gradually so that the bags were inter-linked. The spacing between the sack
and for the sides of the cavity of the mining works and around pipes or luten, hrázových
filling up with sand.
(4) the thickness of the dam regardless of the shape of the cross section of the mining works determines
as follows:
----------------------------------------------------------------
Gauge works the minimum thickness of the dam of bags filled with
in m2 sand ash
----------------------------------------------------------------
less than 6 5.0 8.0
6-10 6.0 10.0
10 to 12 7.0 12.0
12 to 14 8.0 14.0.
(5) the barrier must be provided after the toggle construction.
Buckling of the structure is being built from tightly vzepřených to přitlačených posts
forehead dam transverse podvlaky. Podvlaky sucked against the ceiling and
the invert, or against the sides of the mine strut.
(6) the barrier must be sealed. The sealing can be done and předplavením
Dam popílkovou or plaster stopper and an injection of rocks in
around the dam.
section 21
Dotěsňování containment dykes
Each closing the barrier must be tight. The tightness of the dam should be regularly
check. ^ 7) Leaking dam must be sealed.
section 22
Insulation dam
(1) as an insulating barrier, you can use the hrázový object
and according to § 16 of the brick),
(b) the) walled popílkocementový,
c) walled concrete,
d) walled plaster,
(e)) from other materials, if they have been tested for durability of the dam against the
explosion. ^ 2)
(2) in the construction of isolation dam must be subject to the following conditions:
and the thickness of the object) is determined according to section 14, must be used in the calculation
strength of used construction materials under section 16 to 19,
(b)) the way the anchor, and the terms for the construction of the object for
individual construction materials under section 15 to 19,
(c)) use only výbuchuvzdorné equipment according to the part of the fourth object,
that was tested on the durability of the dam explosion ^ 2)
d) door wings and hatches for the conveyor pass through an insulating object
hang up first after 28 days of the completion of the construction.
PART FOUR
Equipment hrázového object
Article 23 of the
Basic provisions
(1) devices and products intended to be incorporated or hook into the hrázového
object are
and hrázové doors and doors) for the hatch,
(b)) hrázová lutna,
(c) channel) for conveyor
(d)) hrázový průvětrník,
e) targeted the pipeline.
(2) the equipment of the hrázového object must be rated for explosion pressure
and 0.5 MPa) for the dam dimensioned according to § 14 para. 1 (b). and)
b) 1.0 MPa for the barrier of the data according to § 14 para. 1 (b). (b)).
(3) devices and products intended to be incorporated or hook into the hrázového
object, with the exception of equipment referred to in paragraph 1 (b). (e)), it must be
tested for resistance to detonation. This equipment must be marked with a
and the manufacturer's mark,)
(b) the nominal value) of pressure to which it was rated
(0.5 MPa or 1.0 MPa),
c) production number and the year of production.
(4) the Hrázové doors, doors for hatch, lutnu, průvětrník and hrázovou
the passage of the conveyor should be placed in the area of the dam so that the
their mutual perpendicular distance (between the outlines of the individual pieces) and
their distance from the gross cross-section of the indentation is not less than 500 mm.
For the purpose of the pipeline with a diameter of up to 300 mm this distance may be
reduced to 300 mm. example of equipment hrázových of objects is given in
the annex to this notice in Figure 4.
section 24
Hrázové doors and hatches
(1) the Hrázové door (door leaf and frame-frame) is subdivided according to the purpose
on hrázové door
and for the transport of materials) (locomotive or hanging Groove)
(b)) for the passage of people,
(c)) for the hatch of the people.
(2) the dimensions of the door must be hrázových typizovány to size
light cross section of transit match the requirements laid down in the specific
Regulation 3) dimensions of the cross section must be at least light a) for pass
1800 x 600 mm people, b) for 800 x 600 people hatch mm rectangular cross-section
or 600 mm diameter round section.
(3) Hrázové around the perimeter of the doors must be attached to the door frame.
Door construction with the exception of the hatch door of the people must be such that the
the door leaf is automatically closed.
(4) the attachment of the door frame in the area of the dam must be in accordance with the instructions
manufacturer. The door leaf is suspended at the earliest after 28 days after their
construction of the hrázového object.
(5) the door leaf door hrázových on tracks for locomotive transport
must be provided with
a) handle and bumper
(b)) or the reflective reflective painting glass on both sides,
(c)) on the gassy coal mines in places where the opening threatens the
for proper ventilation, also signaling their opening in the space provided,
possibly by blocking depending on another object of isolation.
(6) Passes between the door and the frame, the overhead contact line shall be
broken at such a distance to avoid when you open wings to
short.
(7) the door for the passage of the hatch and hatch for people must be provided with the
both sides of the handle and the opening and closing device
the wings of both parties.
(8) the hatch must be anchored in the area of the dam in accordance with the instructions
manufacturer. The height of the bottom edge of the Airlock must be 40 cm to 60 cm above the
počvou mine. On an inaccessible side must not exceed more than 10
cm of the hrázového object.
§ 25
Hrázová lutna
(1) Hrázová lutna must be anchored in the area of the dam in accordance with the
the manufacturer's instructions. The height of the lower edge of the plate ducting must be 40 cm to 60 cm
above the počvou mine. On inaccessible side must not exceed more
than 10 cm from the hrázového object.
(2) construction of fronts hrázové plate ducting must allow the connection of larger
(smaller) hrázové diameter plate ducting and tight closure of the Airlock using
plate or other sealing the hatch.
(3) the dimensions of the light diameter must be at least 600 mm.
section 26
Passage for conveyor
(1) the passage of the conveyor must be built into the dam in accordance with the
the manufacturer's instructions.
(2) Covers the passage for the conveyor belt must be secured in the open position
against unwanted conclusion a safety element according to the manufacturer's instructions.
section 27 of the
Hrázový průvětrník
Hrázový průvětrník security klapu must have a closing of both
party.
section 28
Special-purpose pipes
(1) the sampling Pipe mining is shutting down air on access
side of a device for the sampling of mining pollution.
(2) the Intervention of the pipeline is a metal pipe of minimum diameter of 100 mm.
the access side of the flange must be terminated and blinded so that the
allow the installation of the valve.
(3) the drainage pipe must be accessible side of the closed trap
or discharge Sockets run into the water sump.
(4) the free space of the cable duct must be sealed on both sides
non-combustible material.
(5) the free pipes with a diameter greater than 150 mm in the hrázovém object, which
is not used to the closure of mine workings must be from both sides blind
flange.
(6) All pipes built in closing the dam shall be output to
a distance of at least 2 m behind the dam.
section 28a
Control of hrázových objects
(1) Hrázové objects, including built-in equipment and products (§ 23 para.
1) shall be checked at least once every 14 days.
(2) Hrázové objects must be marked in the table with the number hrázového
object. On the table is characterized by the date of the last inspection and signature
the oily.
PART FIVE
Transitional and final provisions
section 29
Transitional provision
Wind and hrázové objects and equipment hrázových objects that were
made or established before the entry into force of this order, you can
be used until stocks are exhausted or until the end of the life of these
products and objects.
section 30
Exceptions
Czech Mining Authority may, in exceptional cases, grant exemptions from
the provisions of § 3 para. 2 (a). (c)), § 14 para. 1, § 15 para. 2 (a). (b)), and
It's a request together with a draft alternative measures.
section 31
The effectiveness of the
This Decree shall take effect on the date of publication.
President:
Ing. Bartos v.r.
XIII.
Figure 1-example of a masonry dam in the mine workings with steel arc
reinforcement
Figure 2-Example of the dam with a concrete fills in the mine workings with concrete
reinforcement
Figure 3-example of popílkocementové dam of mine workings with steel
ARC reinforcement
Figure 4-example of equipment of the dam and its placement scheme
1)
Decree No. 52/1997 Coll., laying down requirements to ensure
safety and health at work and the safety of operations at
liquidation of main mine workings, as amended by Decree No. 32/2000 Sb.
1A) of section 13 of Act No. 61/1988 Coll. on mining activities, explosives and
the State Mining Administration.
1B) § § 94, paragraph 106. 1, § 131 and 142 to Decree the Czech Mining Authority no.
22/1989 Coll., on health and safety at work and safety
When operating in mining activities and in the activities carried out by mining
way underground, as amended.
2) § 6 para. 1 of Decree No. 22/1989 Coll.
3) § 292 and 296 Decree No. 22/1989 Coll.
4) § 97 of Decree No. 22/1989 Coll.
5) § 99 paragraph 2. 6 Decree No. 22/1989 Coll.
6) § 79, 82, 93, 94, and 106 of Decree No. 22/1989 Coll.
6a) Decree No. 71/2002 Coll. on control of accidents in mines and mining
oil and natural gas.
7) § 106 paragraph. 3 Decree No. 22/1989 Coll.
