Shanxi Ningwu Yushupo Coal Industry Co., Ltd.

榆树坡煤业5106工作面切眼属于特大断面切眼，且工作面切眼顶板岩性主要为砂质泥岩，围岩控制难度较大。为解决特大断面切眼围岩控制难题，以榆树坡煤业5106工作面切眼为工程背景，研究了特大断面切眼锚网索支护技术，采用高预紧力全锚索主动支护进行控顶，采用高预应力锚杆主动支护进行固帮，同时配套金属网进行护表，技术应用后监测了工作面切眼变形情况。监测结果表明，切眼在掘出3个月后围岩稳定，变形整体可控，实现了榆树坡煤业5106工作面切眼的稳定控制。

The open-off cut of No. 5106 Face in Yushupo Coal Industry is a large section open-off cut, and the roof lithology of the open-off cut is mainly sandy mudstone, so it is difficult to control the surrounding rock. In order to solve the problem of surrounding rock control of super-large section open-off cut, taking the open-off cut of No. 5106 Face of Yushupo Coal Industry as the engineering background, the bolt-mesh-cable support technology of super-large section open-off cut is studied. The active support of high pre-tightening force full anchor cable is used to control the roof, and the active support of high pre-stressed anchor bolt is used to fix the side. At the same time, the supporting metal mesh is used to protect the surface. After the application of the technology, the deformation of the open-off cut of the working face is monitored. The monitoring results show that the surrounding rock of the open-off cut is stable and the deformation is controllable after 3 months of excavation, and the stable control of the open-off cut in No. 5106 Face of Yushupo Coal Industry is realized.

程德中. 榆树坡煤业5106工作面特大断面切眼锚网索支护技术应用[J]. 煤炭与化工, 2023, 46(8): 28-30.

Cheng Dezhong. Application of bolt-mesh-anchor support technology in extra-large section open-off cut of No. 5106 Face in Yushupo Coal Industry. CCI, 2023, 46(8): 28-30.