基于多指标的沿空掘巷卸压带等值宽度研究  

Study on Equivalent Width of Pressure Relief Zone in Roadway Driving along Goaf Based on Multiple Indexes

作　　者：李罡 陈鹏飞 LI Gang;CHEN Pengfei(Safety and Health Department of Yima Coal Industry Group Co.,Ltd.,Yima 472300,Henan,China)

机构地区：[1]义煤集团安康部,河南义马472300

出　　处：《能源与节能》2021年第8期32-34,共3页Energy and Energy Conservation

摘　　要：为保证沿空掘巷工作面在不执行区域防突措施的情况下能安全掘进,研究在孟津矿12070工作面胶带顺槽沿空巷道采用钻屑量S、瓦斯含量等多指标测定指标,确定沿空煤体的卸压带等值宽度。结果表明,12070工作面沿空巷道测试钻孔不同深度的煤体瓦斯含量为1.5~5.8 m^(3)/t,钻屑量S在3.1~5.2 kg/m之间,钻屑瓦斯解吸指标△h_(2)随着孔深加大在缓慢增加,在孔深22~28 m之间达到最大,应力峰值位于距离煤壁18~22 m之间,确定采空区实体煤侧卸压带等值宽度为25 m。In order to ensure that the working face of the roadway driving along goaf can be safely driven without implementing regional outburst prevention measures,it was studied to use multiple index measurement indicators such as drill cuttings S and gas content in the belt crossheading along the goaf of the 12070 working face of Mengjin Coal Mine to determine the equivalent width of pressure relief zone for gob side coal bodies.The results showed that the coal body gas content of different depths of test boreholes of roadway driving along goaf at 12070 working face was 1.5-5.8 m^(3)/t,the drilling cuttings S was 3.1-5.2 kg/m,and the drilling cuttings gas desorption index△h_(2)increased slowly as the hole depth increased,which reached the maximum in 22-28 m,and the peak stress was located between 18-22 m from the coal wall.The width of the pressure relief zone on the solid coal side of the goaf was determined to be 25 m.

关 键 词：多指标 卸压保护 沿空掘巷 支承压力 

分 类 号：TD713[矿业工程—矿井通风与安全]