根据陈四楼煤矿工程地质条件,采用数值模拟方法研究不同开采深度、不同支护强度条件下沿空送巷围岩变形和塑性区分布规律,并分析了不同支护强度对围岩变形的控制作用,指出巷道的两帮是支护重点和难点,应当采用全长锚固锚杆支护才能满足围岩变形的要求,就深部开采回采巷道的支护提出了一些具体的技术措施。
According to the engineering geological conditions in Chensilou mine, the surrounding rock deformation and plastic zone distribution for gateway driving along goaf under different mining depths and different supporting strength were studied by use of numerical simulation. The controlling effect of support with different strength on the deformation of surrounding rock was analyzed. It was pointed out that the support of roadway's sides war the emphasis and difficulty, full length anchoring bolt should be adopted to meet the requirements of surrounding rock deformation. Some technical measures for support of mining roadway in deep mining were proposed.