高应力煤巷全断面三维协同支护控制技术研究与应用

Research and Application of 3D Collaborative Support Control Technology for High Stress Coal Roadway Full Section

针对高应力全断面煤巷稳定性问题,以老母坡煤矿5108工作面运输巷道为研究背景,分析了5108工作面运输巷道在原支护参数情况下的巷道破坏特征,利用FLAC^(3D)数值模拟软件,设置不同的支护参数梯度,分析支护参数对围岩变形的影响,确定了优化后的支护参数,从而提供了三维协同支护控制技术,以实现合理控制巷道围岩变化的目的。研究结果表明,采用优化后的支护方案,顶板最大变形量低于210 mm,两帮最大收敛量低于300 mm。

Aiming at the stability problem of high stress full section coal roadway,taking the 5108 working face transportation roadway of Laomupo Coal Mine as the research background,the failure characteristics of the roadway under the situation of original support parameters of the 5108 working face transportation roadway are analyzed.Using FLAC^(3D) numerical simulation software,different support parameter gradients are set to analyze the impact of support parameters on surrounding rock deformation,the optimized support parameters are determined,thus,the 3D collaborative support control technology is provided to achieve the purpose of reasonable control of changes in the roadway surrounding rock.The research results indicate that using the optimized support scheme,the maximum deformation amount of the roof is less than 210 mm,and the maximum convergence amount of the two sides is less than 300 mm.