采动过程中超前支承压力对瓦斯涌出的影响  

Effect of advance abutment pressure on gas emission in mining

作　　者：焦治平 

机构地区：[1]山焦西山煤电(集团)有限责任公司杜儿坪煤矿,山西太原030022

出　　处：《煤炭工程》2017年第11期105-108,共4页Coal Engineering

摘　　要：瓦斯已经成为制约煤矿企业安全生产最大的威胁因素之一。近年来,虽然各地煤矿都采取了一系列关于瓦斯防治的措施与手段,但瓦斯事故仍然时有发生。文章以西山煤电集团杜儿坪煤矿62711工作面为研究对象,通过现场钻孔钻屑量及瓦斯流量监测,分析了地应力对瓦斯涌出的影响。由于62711工作面采取高抽巷高位预抽本煤层瓦斯,超前支承压力的变化情况及影响范围对瓦斯抽采影响很大,文章通过监测巷道单体液压支柱及锚索随着工作面的推进,其工作阻力变化的情况,分析了62711工作面超前支承压力的变化情况,结合矿井现场实验及瓦斯抽放量的变化情况,研究了超前支承压力对煤层瓦斯涌出的影响,为瓦斯防治工作提供了指导作用和理论依据。Gas hazard has become one of the biggest threat factors for coal mine safety production. In recent years, although a series of gas control measures had been taken in various regions, gas accidents still occurred sometimes. In this paper, the author took 62711 working face of Duerping Coal Mine as the research object, through the monitoring of field drilling cuttings and gas flow amount, analyzed the influence of ground stress on gas emission. As the 62711 working face applied high gas drainage roadway to pump the coal seam gas, the advance abutment pressure changes and the impact range was of great influence on the gas drainage. Through working resistance variation monitoring of single hydraulic pillars and anchor along with the working face advance, the author analyzed the change of advance abutment pressure in 62711 working face, and studied the influence of the advance abutment pressure on gas emission in the coal seam combining the mine field experiment and the variation of gas drainage amount.

关 键 词：超前支承压力 瓦斯涌出 瓦斯抽放量 矿压监测 瓦斯解吸 

分 类 号：TD712[矿业工程—矿井通风与安全]