592/2004 Coll. DECREE of 26 November 2004 amending Decree of the Czech Mining Office No. 52/1997 Coll., Laying down the requirements that ensure safety and occupational health and safety during the liquidation of main mine workings, as amended by Decree No. 32/2000 Coll. of the Czech Mining Office determined according to section 6 para. 6 point. and) Act No. 61/1988 Coll., on mining, explosives and the State Mining Authority: Article I of Decree No. 52/1997 Coll., laying down the requirements for ensuring occupational safety and health and safety at disposal the main mine workings, as amended by Decree No. 32/2000 Coll., is amended as follows: 1. In section 2 at the end of the letter h) is replaced by a comma and subparagraphs i) and (j)) are added : "i) Zone-the zone where loosening the strength parameters of the rock mass as a result of natural processes in the upper part of the Earth's crust decreased compared to the primary rocks, j) jam stopper-and concrete block in and jam scape, which completely spans the pit." 2. In section 5, paragraph 1, after the new paragraphs 2 to 5, which including footnote No. 4 added: "(2) the Pit, for which there is no guarantee the complete and reliable filling of the pit by the stem, or pit, which is expected Other uses may be in favorable geological conditions surrounding rock mass and with the permission of the District Mining Office disposed of by placing the pit plugs under the zone loosening ^ 4). (3) the Pit of jam stopper can fill up only reinforced zásypovým material. (4) the Zone loosening is determined pursuant to § 3 documentation that, depending on the local geological conditions. (5) the jam plug at the site of the establishment must be anchored to the rock mass. The foundation pit stoppers can be used storey intersections (impact) levels. Resistance pit stopper against the expected pressure backfill material must be accompanied by documentation of the calculation. 4A) of section 2. I) Decree No. 52/1997 Coll. ". Paragraphs 2 to 6 shall become paragraphs 7 to 10. 3. In section 8 of the existing text becomes paragraph 1 and the following paragraphs 2 and 3, including footnotes. 7a added: "(2) In the pit, in which not a technical mining reasons make retaining dam in mines it them Ustica is done filling the pit stem in a given zone storied intersection of graded aggregate of fractions from 63 it 125 mm supplemented or sharp, and groovy rock up to and a maximum size of 250 mm ^ 7a). (3) The backfill under paragraph 2 shall exceed the height of the storey intersection about four times the diameter or the largest dimension of the pit and must start at least at twice the diameter and depth or the largest dimension of the pit below the respective floors. 7A), CSN-EN 13043 Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas. CSN-EN 13139 Aggregates for mortar. CSN-EN 13242 Aggregates for unbound and hydraulically bound mixtures blends for engineering work and road construction. CSN-EN 12620 Aggregates for concrete. CSN-EN 13 383-1 Stone for hydraulic structures-Part 1: Specification. "4. In § 10 paragraph. 5 the second sentence, the word "also" be replaced by "In gassy mines also. "5. In section 10, paragraph. 7, the first sentence is replaced by "for gassy mines must jam gases migrating between rock mass and the pit to discharged exhaust air chimney.". 6. In section 16 paragraph 2 reads: "(2) The height of the backfill is transition of every filling volume which corresponds to the height of 50 m converted mine. If the difference between the transition of the height and the filling height of 50 m, mine is greater than 20%, the measurement is repeated and further provides a procedure for filling the main mine. For jam liquidated in accordance with § 14 para. 4, the height of backfill transition at least once a day. ". 7. In § 16 para. 5, after the word "control" the word "jam". 8. In section 16 at the end of paragraph 5, the phrase "complements The other main mine workings inspections are carried out according to the schedule applicable organizations; the time between inspections must not be longer than 24 months. ". 9. In section 17 para. 2.0 "the survey results with methane, barometric pressure," is deleted. 10. In section 17 at the end of paragraph 2, the sentence "In the coal mines also record the results of surveys of methane and barometric pressure. ". 11. In section 18 par. 1 the words "31 December 2004" is replaced by "31 December 2010". 12. In Annex No. 1 in the Annex of maps In point 1 per bracket delete the period and the words "and basic maps of the mine workings, directly related to the pit with the marking method of their disposal." 13. In Annex No. 3 of the existing text is renumbered the 1st and 2nd the following point is added: "For the second pit with a wooden reinforcement and pits where concrete collar ohlubně does not bear pit has its whole surface he firm rocks, with the smallest dimension of the closing ohlubňového staging Dmin determined from equation: Dmin > = 1.5 (d + 2) (m) , where d is the largest dimension of the embossed pits (m) p-is a zone of potential disruptions of rock that after buckling reinforcement falls around the perimeter of the pit (m). ". Article II of This Decree shall enter into force on 1 December 2004. The Chairman: Prof. JUDr. Ing. Macarius, PhD. vr