冲击地压煤矿断层带巷道维护加固技术VIP免费

下载后可任意编辑冲击地压煤矿断层带巷道维护加固技术冲击地压煤矿断层带巷道维护加固技术 崔爱臣 摘要：随着深厚煤田开采数量的不断增加，冲击地压灾害日益凸显，针对冲击地压矿井主要巷道施工完毕后，断层区域巷道由于地压大，冲击频繁，巷道会发生低鼓、顶板下沉、开裂、变形等现象，进而导致冒顶、冲击地压事故的发生。经过井下现场长时间摸索与试验，对断层处巷道采纳大直径钻孔泄压后，进行注浆锚杆、注浆锚索联合加固支护，加固支护后的巷道整体支撑力增加、变形小，可有效的缓解断层处的冲击地压带来的危害。 关键词：冲击地压;泄压孔;锚网索喷;壁后注浆 Abstract： With the continuous increase in the number of deep coal fields， the disaster of rock burst is becoming more and more prominent. After the construction of the main roadway in the mine with a rock burst， the roadway in the fault area will have low drum ， roof sinking ， cracking ， deformation and other phenomena due to the high ground pressure and frequent impact， which in turn leads to roof fall and rock burst accidents. After a long time trial and test in the underground site ， after using large-diameter boreholes to relieve pressure at the roadway at the fault， grouting anchors and grouting anchors are used to reinforce and support. After the reinforcement and support， the overall support of the roadway increases and the deformation is small and it can effectively alleviate the harm caused by the rock burst at the fault. Key words： rock burst;pressure relief hole;anchor mesh cable spray;grouting behind the wall 1下载后可任意编辑 0 引言 随着深厚煤田开采数量的不断增加，冲击地压的危害日益显现。采纳常规的卸压孔施工卸压方案及普通的锚网喷支护虽能部分维护巷道稳定，但冲击地压煤矿断层带巷道受断层、冲击地压双重影响下损毁严重，如处于煤矿重要位置则严重危机煤矿生产安全。本文以孟村煤矿中央带式输送机大巷为背景，论述冲击矿压环境下断层处巷道围岩变形规律，通过对已掘巷道断层位置的加固，...