大断面软岩巷道煤壁片帮机理及控制技术  

Slicing Mechanism and Control Technology of Coal Wall in Large Cross-section Soft Rock Roadway

作　　者：张寅伟 Zhang Yinwei(Safety Supervision Bureau of Shanxi Coking Coal Huozhou Coal Electricity Group,Shanxi Huozhou 031400)

机构地区：[1]山西焦煤霍州煤电集团安全监察局,山西霍州031400

出　　处：《山东煤炭科技》2021年第10期55-57,共3页Shandong Coal Science and Technology

摘　　要：针对辛置煤矿2131巷掘进期间巷帮片帮,导致巷道空顶面积大、顶板稳定性差、两帮支护难度大等技术难题,从煤层赋存、地质构造以及支护设计等三方面合理分析了煤壁片帮机理,并对原支护进行优化,提出了"柔性注浆加固+桁架梯形梁"联合支护技术。通过实际应用效果来看,煤壁片帮深度控制在0.3 m以下,取得了显著应用成效。Aiming at the technical problems such as large empty roof area, poor roof stability and difficulty of twoside support during the excavation of the 2131 roadway in Xinzhi Coal Mine, the mechanism of coal wall slope is reasonably analyzed from three aspects of coal seam occurrence, geological structure and support design, and the original support is optimized, and the combined support technology of "flexible grouting reinforcement + truss trapezoidal beam" is put forward. According to the practical application effect, the depth of coal wall slope is controlled below 0.3 m, and remarkable application results have been achieved.

关 键 词：巷道 片帮 支护 

分 类 号：TD353[矿业工程—矿井建设]