摘要
针对山西A矿五采区大巷煤柱工作面回采过程中遇到的过空巷问题,利用FLAC3D数值模拟技术建立模型,分别对过平行空巷期间以及垂直空巷期间巷道围岩变形规律进行分析。数值模拟结果显示,垂直空巷对于工作面回采影响不大,但当工作面采用常规推进方式回采,与平行空巷相距10 m左右时,工作面及回采巷道矿山压力突然增加。因此,建议矿山采用调斜、调压及增加液压支架支护阻力等方式通过空巷。
In view of the problem of crossing goaf roadway in mining coal pillar working face of the fifth mining area in A mine of Shanxi, this paper used the FLAC_(3D) numerical simulation technology to establish the model, and analyzed the deformation law of surrounding rock during passing through parallel and vertical goaf roadways. The results of numerical simulation show that the vertical goaf roadway has little influence on working face mining, but when the working face adopts the conventional driving method and the distance between the working face and the parallel airway is about 10 m, the pressure in working face and the mining roadway mine increases suddenly. Therefore, it is suggested that the mine should adopt the ways of adjusting inclination,adjusting pressure and increasing the support resistance of hydraulic support in crossing goaf roadway.
作者
杜浩
DU Hao(Dibao Energy Co.,Ltd.of Shanxi,Taiyuan 030045,Shanxi,China)
出处
《能源与节能》
2022年第12期151-153,209,共4页
Energy and Energy Conservation
关键词
大巷煤柱
复采
过空巷
main roadway coal pillar
re-mining
cross goaf roadway
