茂名矿区巷道底臌实测与分析

Analyses of the Measured Results on the Floor Heave in Maoming Mine

通过茂名矿区软岩巷道底臌变形实测结果的分析，说明巷道底胶变形受两帮围岩下沉的影响。茂名矿区的底胶变形由两帮岩柱传递顶板压力开始，在挤压底板的同时和岩帮一起下沉，底板受严重压缩变形后破裂并臌起。提出了用实测参数估计底臌变形各分量的方法，估算结果和实际很接近。并根据底臌变形过程提出了防治底胶的基本原则，这些原则在治理茂名软岩巷道底臌中得到证实。

Base on the in-situ measurements in soft rocks influence of the wall subsiding on roadwayfloor heave is explained. A fact is revealed that the floor of roadway is subsided under the presure ofthe roadway wall during delivering pressur from the roof. The crack and heave of the roadway floor occurred when the deformation of the floor became great. A principle of floor heave controlling is controlling is pro-Posed, which has been verified in Maoming Mine. Formulae for evaluating rodway floor heave are de-rived and gave satisfactory results in calculation.