孤岛工作面沿空掘巷围岩控制技术实践  

Practice of Surrounding Rock Control Technology for Gob-side Entry Driving in Island Coal Face

作　　者：徐军[1] 神文龙[2] 赵强[2] 吴明明[2] 

机构地区：[1]扬州工业职业技术学院,江苏扬州225000 [2]中国矿业大学,江苏徐州221116

出　　处：《矿业安全与环保》2016年第2期91-94,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51204166;51174195);中国矿业大学煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM13X07)

摘　　要：针对王庄煤矿孤岛工作面窄煤柱沿空掘巷围岩变形破坏严重的问题,采用现场地质调研、矿山压力监测的方法,分析了此类条件下围岩变形破坏特征,发现顶板和煤柱帮是围岩控制的关键,针对性地提出"注浆+锚网索+局部加强支护"的控制技术。现场工业性试验表明,该技术可有效抑制顶板深部围岩早期急速离层,弱化两帮非对称变形,减小围岩累计变形量,能够改善围岩力学性质,提高围岩自承载能力。To aim at the problem of serious deformation and failure of surrounding rock in the gob-side entry driving next to the narrow coal pillar in the island coal face,analysis was made on the deformation and failure characteristics of surrounding rock under such conditions by means of the field geological survey and mine pressure monitoring,and it was found that the roof and the narrow coal pillar rib were the key of surrounding rock control. Based on the analyzed results,the control technology of'grouting,bolt-mesh-cable and partly reinforcing support'was proposed. The on-the-spot industrial test results showed that this control technology can effectively inhibit the early and rapid bed separation of surrounding rock in deep roof,weaken the asymmetric deformation of the roadway sides,reduce the accumulative deformation of the surrounding rock,improve its mechanical properties and increase its self-bearing capacity.

关 键 词：孤岛工作面 沿空掘巷 注浆 锚网索 局部加强支护 

分 类 号：TD353[矿业工程—矿井建设]