摘要
针对川煤集团达竹煤电集团公司柏林煤矿薄煤层沿空留巷围岩变形严重的问题,运用理论分析和现场实测相结合的方法,分析了切顶卸压爆破技术的基本原理,介绍了0456(K24)回采工作面和巷道的概况。根据现场0456(K24)工作面机巷的实际情况,提出了采用切顶卸压爆破沿空留巷技术,确定了切顶卸压爆破的技术参数。现场试验结果表明,通过采用切顶卸压爆破沿空留巷技术效果明显,沿空留巷顶板变形量较小,从而有利于薄煤层的安全高效回采。
For the problem of surrounding rock deformation of gob - side entry retaining of thin coal seam in bailin Coal Mine of Sichuan Coal Group Dazhu Coal - electricity Group Company, the basic principle of roof cutting and pressure relief blasting and the 0456 （ k24 ） working - face amt roadway was analyzed by adopted the method of combining the theory analysis and the test of practice. This article departures from the practice of the conveyor roadway of 0456 （ K24 ） working face, then the technology of roof cutting and pressure relief blasting at god - side enuy retaining was introduced, and the parameters of this technology is established. The results of industrial test shows that the effect is obvious about the technology of roof cutting and pressure relief blasting at god - side entry retaining, the roadway roof deformation is small, which is henefit to the safe and high - efficient mining of thin coal seam.
出处
《煤矿安全》
CAS
北大核心
2014年第6期132-135,共4页
Safety in Coal Mines
关键词
卸压切顶
沿空留巷
预裂爆破
巷道变形
pressure relief and roof cutting
gob - side entry retaining
pre - fracturing blasting
roadway deformation
