采用理论分析和室内实验方法，对文家坡煤矿运输大巷底鼓的发生机理进行了分析，确定了大巷底鼓类型为遇水膨胀性底鼓。提出了有针对性的底鼓支护方案，并给出了底鼓支护参数，运用FLAC3D数值计算方法对底鼓支护方案的合理性进行了验证。现场实测结果表明，巷道底鼓量为22�4mm，相比治理前明显减小，底板变形得到了有效地控制，能够满足盘区运输大巷变形要求。%Depended on the belt conveyer lane in Wenjiapo coal mine, the floor heave mechanics of large section soft rock roadway was researched using theoretical analysis and lab experiment. The type of floor heave was determined as hydro-expansiveness. The floor heave support scheme was proposed and the supporting parameters were given. With the FLAC3D numerical simulation, the feasibility of floor heave support program proposed was verified. The result of industrial test indicated that, the floor heave value was 22�4mm, which significantly reduced after floor heave treatment. The floor deformation was controlled effectively, meeting the deformation requirements of mine block.
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