安居煤矿5307工作面切顶沿空成巷技术研究  

Study on Roof Cutting and Roadway Forming Technology along Gob in 5307 Working Face of Anju Coal Mine

作　　者：蒋凌强 Jiang Lingqiang(Anju Coal Mine of Jining Mining Group Co.,Ltd.,Shandong Jining 272000)

机构地区：[1]济宁矿业集团有限公司安居煤矿,山东济宁272000

出　　处：《山东煤炭科技》2022年第8期96-98,116,共4页Shandong Coal Science and Technology

摘　　要：安居煤矿5307工作面埋深超千米,需切顶卸压减少巷道围岩压力。根据5307工作面实际情况,通过破碎矸石轴向压缩变形研究碎胀规律以及碎胀充填特性,对NPR恒阻大变形锚索和预裂切缝等关键参数进行了设计,并通过现场实际监测巷道围岩变形量,切缝侧和实体煤侧的顶板下沉量相对一致,且变形量较大,而底鼓变形量相对较小。The buried depth of working face 5307 in Anju Coal Mine exceeds km,and it is necessary to cut the top to relieve the pressure to reduce the surrounding rock pressure of the roadway.According to the actual situation of 5307 working face,through the axial compression deformation of broken gangue,the law of crushing and swelling and the filling characteristics of crushing and swelling are studied,and the key parameters such as NPR constant resistance large deformation anchor cable and presplitting slit are designed.Through the on-site actual monitoring of the deformation of the surrounding rock of the roadway,the roof subsidence at the slit side and the solid coal side is relatively consistent,and the deformation is large,while the deformation of the bottom drum is relatively small.

关 键 词：采煤 沿空 切顶 支护 

分 类 号：TD353[矿业工程—矿井建设]