煤层构造及掘进对顶板离层影响的数值模拟研究

• 作 者: 曾范永 王连国
• 机 构: 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏建筑职业技术学院,江苏建筑节能与建造技术协同创新中心,
• 出 处: 煤炭技术
• 发表日期: 2016年10期
• 关键词: 行人上山 回风上山 带式输送机顺槽 顶板离层 数值模拟

针对行人上山和回风上山及行人上山和带式输送机顺槽2种情况对顶板离层的影响,利用FLAC~(3D)数值模拟软件,对其进行了模拟研究。通过模型建立以及模拟结果分析,得到无论哪一条上山先开始掘进,最终行人上山顶板沉降的位移量都是最大的;同时断层对2条上山的掘进影响很大,先掘进回风上山,有利于降低行人上山巷道围岩应力和顶板位移量;上山和顺槽掘进时,先掘进上山有利于巷道的支护。

Aiming at the impact of pedestrian uphill and return wind uphill, pedestrian uphill and belt conveyor on the roof delamination, the FLAC 3D numerical simulation software is used to simulate the influence of roof pedestrian separation. Through the model establishment and the simulation result analysis, no matter which one goes up the tunnel, the displacement of the final pedestrian up to the top of the mountain is the largest. At the same time, the fault has a great influence on the tunneling of 2 uphill. Which will help to reduce the surrounding rock stress and roof displacement of pedestrians going up the mountain roadway;