膨胀性软岩水理性质与底鼓间相关性分析

Correlation Analysis between Hydrological Properties and Floor Heave of Expansive Soft Rock

针对红庆梁煤矿11303工作面回风巷埋深较浅和底部含水的情况,并考虑到该底板为砂质泥岩且出现严重底鼓现象,对该底板软岩水理膨胀性质进行了分析研究,总结了该回风巷底鼓与水理性质的关系。研究内容包括对底板岩样进行物理参数测定、物质成分分析、吸水率、天然含水率、膨胀率、膨胀应力及崩解性测定。最终根据实验结果分析水理性质对该回风巷软岩底板影响程度,可为红庆梁煤矿底鼓治理提供参考。

In view of the situation of shallow buried depth and water content at the bottom of 11303 working face of Hongqingliang Coal Mine,considering that the floor is sandy mudstone and has serious floor heave phenomenon,the hydrological expansion property of soft rock in the floor of the return air roadway is analyzed and studied,and the relationship between the floor heave and hydrological properties of the return air roadway is summarized.The contents of the study include the determination of physical parameters,material composition analysis,water absorption,natural water content,expansion rate,expansion stress and disintegration of floor rock samples.Finally,according to the experimental results,the influence degree of water quality on the soft floor of the air return roadway is analyzed,which can provide reference for the control of floor heave in Hongqingliang Coal Mine.