Study on track determination and effect analysis of anti-outburst drilling in Shanjiaoshu Coal Mine
The outburst prevention drilling trajectory is an important means to detect the implementation of outburst prevention meas-ures.Through the measurement and analysis of the drilling trajectory,a reasonable drilling plan can be formulated to ensure the safety and efficiency of drilling construction.According to the requirements of the"Detailed Rules for Prevention and Control of Coal and Gas Outbursts"(2019 edition),it is necessary to measure the trajectory of the drilling for regional outburst prevention measures and the effect inspection drilling.Combined with the coal seam geological conditions and excavation layout of Shanjiaoshu Cola Mine,the ZXC1000 mining drilling inclinometer was used to conduct measurement experiments on No.1-3 drilling in the No.221015 transporta-tion roadway of the No.2 mining area.The results show that the ZXC1000 mining drilling inclinometer can successfully realize the open-ing positioning and the inclination measurement of the drilling trajectory(left and right deviations and up and down deviations),and the No.1-3 drilling can be measured by the ZXC1000 mining drilling inclinometer and theodolite.The left,right,top,and bottom deviations at the end of the drilling(depth of 96 m)were all within 1.7 m,and the measurement trajectory was relatively accurate.Based on the drilling trajectory,it is possible to determine whether there are blind areas in the coverage area of the regional anti-outburst drilling.The research results are of great significance for evaluating the effectiveness of regional anti-outburst measures and identifying potential risks.
drilling trajectorycoal and gas outburstregional anti-outburst
万方数据
维普
