沿空留巷支护技术的数值模拟研究

Numerical Simulation Study on Gob-side Entry Support Technology

以贵州某煤矿沿空留巷巷道为研究对象,采用RFPA数值模拟软件建立数学模型,对该沿空留巷巷道在目前支护条件下的围岩变形破坏情况进行了数值模拟分析,得出该巷道靠采空区一侧及靠煤帮底角稳定性较差的围岩变形破坏规律,为该矿井针对性地加强沿空留巷巷道支护提供依据。

By taking the gob-side entry retaining in a coal mine in Guizhou province as the research object, the corresponding mathematical model was established by the simulation software RFPA. The deformation and failure of surrounding rock in the roadway with the current supporting conditions was analyzed. As a result, the rule that the surrounding rock stability in the area near to the goaf side and the bottom comer of the coal side is relatively poor was obtained, which can provide basis for the coal mine to strength the supports of the gob-side entry retaining more pertinently.