摘要
针对松软厚煤层综放面开切眼断面大和围岩变形破坏强烈等特征,首先对顶板按似连续体梁理论进行稳定性分析,继而对两帮煤体破坏和整体失稳情况进行计算,最后对各锚网索支护方案进行数值模拟,优化支护参数,选定安全经济的支护方案。现场工业性试验表明,该支护方案满足工程要求,具有较好的经济和社会效益。
According to the large cross section open-off cut,the surrounding rock serious deformation failure and other features of the fully mechanized longwall top coal caving mining face in the soft thick seam,the paper firstly analyzed the stability of the roof in the mining face based on as the continued mass beam theory.Then the paper calculated the failure of the two side coal mass and seam instability.Finally,the paper had a numerical simulation and an optimized support parameters for the different bolt,steel ...
出处
《煤炭科学技术》
CAS
北大核心
2007年第7期103-107,共5页
Coal Science and Technology
关键词
似连续体
锚网索
极限分析法
数值计算
as continued mass
bolt
steel mesh and anchor
limit analysis method
numerical calculation
