新集二矿1~#煤层开采采空区侧向卸压瓦斯排放宽度研究  

Study on Gas Emission Width of Pressure Relief Along the Lateral Direction of Goaf in 1~# Coal Seam of Xinji No.2 Mine

作　　者：徐遵玉[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《煤矿安全》2018年第2期159-162,共4页Safety in Coal Mines

摘　　要：为研究工作面回采后本煤层卸压范围和瓦斯自排放宽度,针对新集二矿1~#煤层瓦斯地质赋存条件,对210108工作面采空区侧向煤体的瓦斯含量、钻屑量及钻屑解析指标进行考察研究,并结合数值模拟结果,确定了工作面卸压带宽度。现场测试数据及数值模拟结果表明:1~#煤层210108工作面瓦斯卸压宽度范围为0~12 m;采空区侧向垂直应力在距离采空区0~10 m范围内为应力降低区;结合现场实际情况综合确定该面卸压宽度为10 m。In order to study the pressure relief range and gas emission width after extraction of stope, according to the gas geological condition of Xinji No.2 Mine 1-# coal seam, field measurement of gas content, drilling cuttings and analytical indexes are carried out along the lateral direction of the goaf in 210108 stope, combined with the numerical simulation results, the width of lateral pressure relief range is determined. The results of field test data and numerical simulation show that the width of gas unloading pressure in the 210108 working face of 1-# coal seam is 0 to 12 m; the lateral vertical stress within the range of 0 to 10 m from the goaf is the stress reduction zone; combined with the actual situation of the field, it is determined that the pressure relief width of this surface is 10 m.

关 键 词：采空区侧向 支承压力 卸压范围 瓦斯排放 残余瓦斯含量 钻屑量 

分 类 号：TD713[矿业工程—矿井通风与安全]