State administration of production safety supervision and management on the decision to modify some provisions of the mine safety regulations

    (Released on January 21, 2010, the State administration of work safety, the 29th since as of March 1, 2010) State administration of production safety supervision and management decisions on the part of the mine safety regulations read as follows: One of the 48th article is revised as follows: "the exploitation of mining area must be requested by the rational production layout before preparing the design of mining area, and in strict accordance with the design of mining area construction.

    ” Addition of a paragraph, as the second paragraph: "within a mining district layout 1 wing of the same seam can only face and 2 in heading face at the same time work.

    ” One paragraph is added as a third paragraph: "one wing in the same coal seam mining and coal mining, the mining district layout 2 only mining working face and 4 heading face at the same time work.

    ”

    The second, third, fourth, fifth respectively to the fourth, fifth, sixth and seventh paragraphs. Second, the 50th article is revised as follows: "the coal face all exits and roadway connections Advanced pressure support must be strengthened within the affected areas, and strengthen support of roadway length must not be less than 20m fully mechanized coal mining face and tunnel height shall not be less than 1.8M in this range, other coal face, tunnel height shall not be less than 1.6m in this range. Exits and is connected to the tunnel must be maintain, Stent fracture Liang Shezhu, roadway of roadway deformation must be timely replacement, dredging.

    ” Three article 132th, amended to read: "mine mechanical and electrical equipment in the Chamber shall be established within the intake airflow; the proliferation of ventilation of the Chamber, its depth shall not exceed 6m, the entry width shall not be less than 1.5M, and no gas emission.

    ” Modify the second paragraph as follows: "underground electrical equipment located in the back in the air, you must install the sensors of methane and methane exceeding limit power function.

    ”

    Four, removes the 136th article.

    Five, and 137th article modified for: "mining face gas emission volume is greater than or is equal to 20m3/min, and into return roadway NET section 8m2 above, by pumping put gas reached coal mine gas pumping mining basic index of requirements and increases air has reached highest allows wind speed Hou, its return Xiang romantic in the gas concentration still not meet this procedures 136th article provides of, by Enterprise main head approval Hou, can used dedicated row gas Xiang, dedicated row gas Xiang of set must comply with following provides:

    "(A) face air flow control to be reliable.

    "(Ii) special gas lane must face into the wind tunnel system layout, and specializes in designing and formulating special security measures; tailentry is strictly prohibited as a dedicated exhaust gas tunnel management.

    "(C) special gas alley back flow gas concentration shall not exceed 2.5%, wind speed shall be not less than 0.5M/s; private gas lanes of roadway maintenance work, gas concentration must be less than 1%.

    "(D) special gas lane and its auxiliary tunnel shall be carried out in production and set up electrical equipment.

    "(E) special gas lane you must use non-combustible material support, and should prevent the generation of static electricity, friction and impact sparking security measures.

    "(Vi) special gas lanes must be run through the entire work surface length and must not have a blind alley.

    "(G) special gas drainage roadway methane sensor must be installed within, methane sensors shall be hung from special outlet gas Xiang 10-15m, when methane concentration reaches 2.5%, can send alarm signals and cut off the face power, faces must stop working, for processing. "(VIII) special gas lanes prohibited layout in easily spontaneous combustion seam.

    ”

    Six, 148th, is revised as follows: "gas drainage must comply with the following provisions:

    "(A) drainage in goaf of spontaneous combustion and easy spontaneous combustion coal seam gas, you must always check the concentration of carbon monoxide and gas temperature change, when spontaneous combustion indication is found, shall take immediate measures.

    "(B) well laying gas pipeline, no contact with the charged object and should have measures to prevent smashed pipeline.

    "(C) gas dry type equipment, drainage gas concentration shall not be less than 25%.

    "(D) use of gas, in the gas system to be fitted with anti-backfire, wind-proof and explosion-proof safety devices. "(E) extraction of gas concentration is lower than 30%, not as a direct combustion gas; for internal combustion engine power or for other purposes, the use of gas and transport must be in accordance with the relevant provisions of the standards, and development of safety measures.

    ”

    In table 3 of article VII, delete the 168th "provided for under this point the 136th air in coal mining face of mine safety monitoring and control system".

    Section eight, the 176th is revised as follows: "within the coal mine mine field (Rock) and gas (referred to as highlighted, the same below) or identification of danger of outburst coal seam of coal seam outburst; in mine exploration, production range for outburst in outburst seam in mine.

    "Coal mine production safety accidents, determined by the accident investigation for the accident, the incident is the seam of outburst coal seam, the mine is the highlight of mine.

    "Any of the following circumstances should immediately proceed to the identification of outburst coal seam; identification prior to completion, should be in accordance with the management of outburst coal seam:

    "(A) the coal-bed gas dynamic phenomenon.

    "(Ii) the gas pressure meets or exceeds 0.74MPa.

    "(C) adjacent to the same coal seam mining accident or were identified for the outburst. "The outburst and identification of outburst coal seam, commissioned by the coal mines with coal and gas outburst hazard identification of qualification of units.

    Coal enterprise's results should be submitted to the provincial (autonomous regions and municipalities) is responsible for the management of coal industry Department for approval, and the provincial coal mine safety watchdog for the record. "New mine coal seam outburst based on geological prospecting departments should be the basis of coal seam outburst hazard assessment information; the assessment that highlighted a dangerous new wells, during its construction poses a threat to mining and other extractive activities of coal seam outburst hazard identification.

    ” Article No. 201, amended to read: "men exposed (open) before the outburst, when outburst danger working face is forecast, highlight prevention and control measures must be taken, by the examination after the measures have been effective, free long distance blast exposed (open) seam; if the inspection is not added outburst prevention and control measures must be taken up effectively. When no outburst danger working face is forecast, long-range blast or shock blast could be directly exposed (open) seam.

    ”

    Ten, No. 209 is amended as: "roadways exposed seam with outburst in outburst coal seam when mining, must take refuge in remote blasting, Chamber, reverse the throttle, air compressor self-rescue system and other security measures. "Outburst into personnel must carry the isolated Self-rescuer; extractive industry, isolated themselves should be hung or placed in the context of the 3M.

    ” XI, No. 253, paragraph modified as follows: "mine threatened by water during the rainy season, rain water prevention and control measures should be developed, establish inspection system and organize rescue teams during the rainy season, and storing sufficient flood prevention goods. When the heavy rain threat to mine safety, and must be discontinued immediately to withdraw all personnel only in storm and flood risks thoroughly eliminated before they can resume production.

    ” 12 Article No. 273, amended to read: "hydro-geological condition is complicated or there is danger of flooding wells, should be at the bottom of parking around the water door or on the basis of the normal drainage system installed with independent power supply and drainage capacity of not less than the maximum discharge of the submersible pump.

    ” Addition of a paragraph, as the second paragraph: "risk of water inrush in other mining areas, should be put up near the water gate, do not have set conditions for water dam and water outburst prevention and control measures must be established and approved by its Chief of coal mine enterprise.

    ” Former second to third paragraphs, and added as item (VIII): "water door must be flexible, reliable and guarantee an annual 2 closure test, 1 of them should be carried out before the rainy season, closed with tools and spare parts for gate must hand custody locations storage, not to misappropriate lost.

    ”

    Original third paragraph read fourth paragraph. 13, No. 274 is amended as: "the set of underground waterproof wall should be decided according to the hydro-geological circumstances, waterproof wall designed by technical director approved the construction of coal mine enterprise and before entry into service shall be organized by the Technical Director of coal mine Enterprise acceptance.

    ” 14, No. 285, paragraph modified as follows: "mine have to do flood forecasting and water conditions, and will adhere to the forecast, there is doubt exploration, after the first driving principle, treatment prior to mining and water control.

    ” Third paragraph: "water-hole layout and advance distance shall be determined according to head level, coal (Rock) thickness and hardness, as well as safety measures in the design of survey water specific provisions. ”