This standard specifies the principles, procedures, design contents and relevant provisions for the process of exposing coal and gas outburst seams (hereinafter referred to as outburst seams) by stone gate. This standard applies to the process of exposing coal and gas outburst seams by stone gate (hereinafter referred to as stone gate coal excavation). MT/T 955-2005 Technical conditions for the process of exposing coal and gas outburst seams by stone gate MT/T955-2005 Standard download decompression password: www.bzxz.net

ICS 73.020
Registration number: 16785-2005
Coal Industry Standard of the People's Republic of China
MI/T955-2005
Procedure and Technical Conditions for Exposing Outburst Seanis by a Crosscul2005-09-23Release
National Development and Reform Commission
2006-02-01Implementation
MT/T $55--2005
This standard is based on the <Coal Special Regulations: 2004 Edition> and the 31595 Edition formulated by the Ministry of Coal of the People's Republic of China, and the Appendix A of this standard is a normative appendix.
This standard is proposed by the Science and Technology Development Department of the China Coal Industry Association. This standard is under the jurisdiction of the Coal Industry Safety Standardization Technical Committee. The drafting unit of this standard is the Beijing Coal Research Institute, and the new branch of the Beijing Coal Research Institute. The leaders of this standard are: Qi Shisheng, Chu Dulin, Shu Qiubei, Zou Qian, Qiu Banning, and Zhang Qinghua. 1. Technical conditions for the procedure of penetrating coal and gas from coal seams MT/T955—2005. This standard stipulates the design procedures for penetrating coal and gas from coal seams with rock gates (hereinafter referred to as protruding coal seams). The relevant provisions of the version are followed. This standard applies the working procedures for penetrating coal seams with rock gates (hereinafter referred to as non-protruding coal seams). 2. Normative referenced documents. The following documents are used as the clauses of this standard through the practice of small standards. The revised documents do not include errata or other amendments during the period, which are not applicable to this standard. The latest versions of these documents may be used to promote the improvement of this standard. All non-date currency documents, the new collection of the new ten standards, MT/T638-116 coal and the lower smelting layer according to the flow M [21x33-1999 name of the test method for the determination of gas change danger MT14116 network new desorption standard determination method 3 is the meaning of this standard mining period, the following definitions, bZxz.net
Shimen coal expasingllrstaenmuyerusscul stone bottom (item) plate "layer and baking layer up to velvet separation 1. Foreign state began to enter or pass through the central coal seam item bottom) plate (method practice distance greater than 2m all made.
4 Shimen coal mining technology element original measurement
4, 1: plan, accumulation penetration (lift out of the coal seam before diagnosis, must maintain the special plan to prevent sudden change, report to the technical person in charge of the enterprise should be approved: 12 as much as possible according to the number of coal changes, expansion of sudden stop double layer of the ground : If the state permits, the surface will be placed in the protection zone, and the six coal seam foundation roads will be used again. The road should be ahead of the factory or registered belt: 3 good and keep normal road
4.3 Before the stone gate device comes out of the coal seam, the belt control method must be used to measure the size of the coal layer to form a dangerous life plan in front of the stone gate work. . When the thickness of the protruding coal seam is less than 0.3, there is no need to directly cause the total free acid to penetrate the coal bottom through the wind
5 The main contents of the design of the stone gate exhaustion coal snow door are not the total width of the door. The door design includes the main contents; the stone gate report coal area city media method, the spirit of the old road distribution stomach basic management to improve the ventilation system and humidification control through the wind flow measures: control the sticky hole in the layer:
coal record protruding danger MI/I955--2005 6.1 Shimen coal mining process flow chart 1
Analysis of rock quality loss and increase
Pre-exploration (coal seam method greater than 1)
Stop twisting and saving coal method 5
Pre-exploration and small danger quick warning
Pre-exploration and small amount of coal before the current small amount of consultation and support safety protection measures
Transportation and high-speed micro or dynamic protection fast progress
Sweet strong protection
1 There is a real danger
Real end quality change measures| |tt||Prevention and control model effect and benefit
: Supplementary example study
Talk about the tax penetration correction layer (formation) plate out of the layer from the coal seam decisive battle distance high analysis of the process flow of Shimen bituminous coal
6.2 Coal seam stratigraphic wire
6.2.1 In the process of gate insertion, timely carry out natural turbulence capture and geological protection, strengthen the geological prediction and forecasting work, 52.2 in the famous gate Ding work face cattle stop layer to reach the line At least 2 people shall drill through the coal completely at a distance of 10 meters, and the depth of entry must not be less than 1.5 meters. The coal seam level and surface map shall be drawn to ensure the thickness of the coal seam, the changes in geological structure, the relative position of the stone gate and the coal system, etc. From the beginning of the coal seam transportation, the distance between the exploration and the drilling shall not be less than 2m, and the number of holes shall be determined according to the actual situation, but the minimum normal line shall be not less than 10 meters. The sampling layer shall be accurately planned and inspected, and the minimum normal line distance shall not be less than 23 meters. The normal line of the mining shall be taken from the damaged layer in the area with a certain slope. The hole should be able to be used for the section of the coal seam around the working face, that is, the coal seam titanium line should be 5 meters away from the commercial surface. The reverse operation should be carried out. The lifting speed should be not less than 5 meters. The number of replacement holes is determined according to the actual situation every year: but it should not be less than % to accurately explore the safe coal seam and indicate the size of the coal seam. Ensure that the minimum distance from the coal seam is not less than 5m. 6.3 Prediction of the hazard of outbursts || tt || Renmen 1 working face stratum outburst hazard items shall be measured in accordance with the following requirements: 1) The outburst hazard plan of the working face should be carried out outside the distance (method), and the prediction method can adopt M611.MT/83% A or other light test confirmed effective methods: 5) New mines with case mountain hazards And when the mine has a new size and level and the first report is made (and) all full layers, the gradual pressure, relative volume and other gas danger-related data of the strata must be determined, and the gas distribution force verification shall be carried out according to VT: c》When the working face is predicted to be a gas outburst danger, it is necessary to take preventive measures. When it is predicted to be a gas outburst danger working face, it is possible not to take preventive measures against fire, and directly use the distant acid or play entertainment slope (opening) coal seam. 6.4 Preventive measures
6.4.1. The measures for preventing sudden gas in the working room shall include gas drilling, gas drainage, water control, metal rack or other measures proven to be effective through tests. The number of measures shall be tested in practice. 6.4.2. When implementing various sudden gas measures, the right working hole and the coal seam shall be different in lithology, thickness, size, toughness, and other characteristics. 6.4.3. In the process of implementing sudden gas measures, the implementation shall be limited to ensure that the operators are fully equipped. 6.4.4. In the process of implementing sudden gas measures, the design parameters shall be strictly followed and the actual construction parameters shall be recorded on site. After completion, the construction drawings of the prevention measures shall be drawn according to the actual standard construction parameters. If there is a significant difference between the construction and the design, supplementary measures shall be taken. 6.5 Test of the effectiveness of measures
After the implementation of the preventive measures, the effectiveness must be reported by MT/T(14M1/83\, A or other effective methods. After the test measures are effective, the special layer will be opened; if the measures are ineffective, additional measures must be taken to prevent and control the sudden change until it is effective. Special treatment measures must be written in a letter of effectiveness and reported to the technical person in charge for approval.
For particularly thick layers or too small inclinations, the full thickness of the layer cannot be opened at the first time. When adding the remaining new layers, the preventive measures and the effectiveness of the measures must be implemented according to the actual experience. Only after the test is effective can they be guaranteed. It is enough to take measures to continue to advance. During the operation, we must take safety measures for the operators. 6.6 Safety protection measures
6.6.1 When the stone gate is to penetrate the protruding coal, it is necessary to take safety protection measures including active drying alkali (or long-distance drying plate), automatic adjustment, anti-door pressure net self-effective system and distance type entrance. 6.E.2 From the convex door, the distance from the head to the high and steeply inclined coal seam is not less than 15 m. If the rock is loose and broken, the load should be added! The whole process of entering the coal (light line at least 2 meters away from the bottom) must adopt vibration blasting or transport distance blasting. 6.6.3. The working surface must have a unique and smooth ventilation system. In the process of working, the ventilation system must be equipped with two fastened directional air doors, which are in accordance with the national ventilation system. The ventilation degree must be tight and reliable. The gas outlet must be tight and reliable. In the early stage of the change, the production must be fully open. In the whole operation process of the right door through the protruding coal treasure, other 1 work related to this stone door must be stopped when the two work sources are stopped, such as the protruding blasting report, etc., this door With regard to the ventilation system, all personnel involved must evacuate the ground, and all electrical appliances must be flushed down. It is strictly forbidden to use any fire source within 50m of the ground. There are underground ventilation fans in the safety table. The ventilation fans must meet the fire protection performance requirements at a distance of 2:1 from the well. 6.5 There must be a direct access to the mine reading room near the working face and the place where personnel are concentrated for carbon explosion evacuation. A self-contained air supply room with self-contained air facilities must be set up. 6.6.6 All personnel under the mine must have a self-contained ventilation system. It is necessary to carry two-type effect devices, 5.67 to expose the baking layer, any stone within 3m of the scope of the short entry must be marked to the support, strictly implement the labor and beauty measures, 7 other
Jiangfei, inclined shafts and other rock inspection standards for coal mining hall can be stored in the door coal mining hall for a period of time. 3
MT/T955-2005
(Normative Appendix:
Comprehensive indicators and two methods for determining the danger
1. Drill at least one standard pressure station hole in the sinus coal seam facing the stone family road working surface, and measure The pressure of the fixed layer is 5 m, and the pressure measurement method is in accordance with MT/T688-1996.
In the process, the vertical coal hole is taken to the bottom, and the density of the coal seam is recorded (3. The small value of the density coefficient obtained by the two pressure measurement holes is expanded and the average is taken as the semi-average density of the coal seam. 4. The coal samples with the smallest density coefficient are combined to determine the initial gas release difference (m/s). A.5 Calculate the final data, F, and the calculation formula is as follows! D
Where:
(0. 307 5× / f3) XP-0. 74)
K-AP/S
Luan layer! 1 Hazard comprehensive index,
Swelling layer sudden good hazard comprehensive index:
H—mining depth pressure,
Coal seam gas pressure, take the maximum value of the two estimated holes measured gas pressure,: a
The gas effect of the layer is fast!
Compared to the basic effect of the pharmaceutical industry:
A.6 Comprehensive is the determination of the standard D The critical constant root number of the area is determined by the measured data. If the measured data is obtained, the dangerousness of Mishan is determined by the table A1. If the calculated value in the two brackets in the calculation formula is the market value, the monthly value is calculated: the part is actually not dangerous. Table A1 uses comprehensive indicators D and K to predict the critical value of the degree of danger of the coal seam. The actual danger of the coal seam is finally summarized. 1
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Forbidden layer capital output club a report director
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