双重动压下近距离煤层采空区下巷道补强支护设计

Design of Reinforcement Support for Underground Roadway in the Gob of Contiguous Seams under Dual Dynamic Pressure

本文以斜沟煤矿18505工作面双重动压、近距离煤层采空区下掘进巷道为背景,分析研究了巷道围岩失稳机理,结合现场实测以及FLAC^3D数值模拟的方法,提出了改进支护措施。结果表明,该支护措施可以有效解决双重动压下近距离煤层采空区下掘进巷道支护强度弱的问题,具有很好的推广意义。

Based on the background of the double dynamic pressure and the driving roadway under the goaf of contiguous seams in the 18505 working face of Xiegou Coal Mine, this paper analyses and studies the mechanism of surrounding rock instability of roadway, and puts forward improving supporting measures combined with field measurement and FLAC3D numerical simulation. The results show that this support measure can effectively solve the problem of weak support strength of driving roadway under double dynamic pressure in contiguous seam goaf, and has a good popularization significance.