以某煤矿3308标段为例,通过FLAC软件对其柔模混凝土沿空留巷应力分布进行模拟。结果表明,开挖阶段应力分布较为规则;回采阶段,巷道帮部应力最集中;充填体宽度增加,有利于巷道水平应力分布向顶板深处转移,然而其垂直应力则会向底板转移,可能加大底板变形。 Taking the section 3308 of a coal mine as an example, the stress distribution of soft concrete retaining roadway along retaining roadway was simulated by FLAC software. The results show that the stress distribution in the excavation stage is relatively regular. During the mining stage, the stress in the gangway is the most concentrated. The increase of the width of the filling body is beneficial to the horizontal stress distribution in the roadway to the depth of the roof. However, the vertical stress will transfer to the bottom plate. Large floor deformation.