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以国内某大型矿井运输大巷为例,运用大型岩土数值计算软件对断面积基本相等、断面形状不同的2种大断面巷道进行了数值模拟,对比分析其稳定性,得出巷道断面形状对巷道围岩应力场、位移场、变形场、破坏范围的影响,筛选出了该矿条件下稳定性较好的巷道的形状,实现巷道形状的优化选择。
Taking the transportation of large lanes in a large domestic mine as an example, two kinds of large-section roadway with same cross-sectional area and different cross-section are numerically simulated by using large-scale rock and soil numerical calculation software. The stability of the roadway is compared and analyzed. The influence of the stress field, the displacement field, the deformation field and the damage range of the surrounding rock of the roadway, the shape of the roadway with good stability under the condition of the mine is screened, and the optimal choice of the roadway shape is achieved.