煤矿巷道围岩变形实测分析及现场工业性试验

Deformation Analysis of Coal Mine Roadway Surrounding Rock and Field Industrial Test

断层带巷道在实际开采中不仅会受到断层带的影响,还会受到开采动压的影响,导致巷道支护难度较大,因此,本文在分析工作面实际地质断层的基础上,基于FLAC3D分析断层带开采的变形特征和应力;根据仿真结果和现场调研得出造成断层带巷道变形的原因,提出了两种优化方案,并通过数值模拟方案对比两种优化方案。实践表明,上述方案可减小巷道的整体变形,保证了巷道顶板的完整性和稳定性。

In actual mining,fault zone tunnels are not only affected by fault zones,but also by mining dynamic pressure,which makes tunnel support difficult,therefore,based on the analysis of actual geological faults in the working face,this paper analyzes the deformation characteristics and stress of fault zone mining using FLAC3D.Based on the simulation results and on-site investigation,two optimization schemes were proposed to identify the causes of deformation in the fault zone roadway,and numerical simulations were used to compare the two optimization schemes.Practice has shown that the above scheme can reduce the overall deformation of the tunnel and ensure the integrity and stability of the tunnel roof.