贵定县峰坡煤炭勘查区水文地质特征分析

Analysis of hydrogeological characteristics of Fengpo coal exploration area in Guiding County

在充分调研了贵州省贵定县峰坡煤炭勘查区勘探资料基础上,对勘查区水文地质条件进行了详细的分析和论述,认为峰坡煤炭勘查区属以岩溶充水为主,顶底板同时进水,水文地质条件复杂的岩溶充水矿床.并对未来矿井的充水因素进行了预测分析,指出未来矿井的直接充水水源为来自上覆吴家坪组二段(P3w2)充水含水层和下伏茅口组(P2m)充水含水层中的溶洞水,间接充水水源为地表水和大气降水,充水途径主要是未来矿井采动影响而产生的岩石冒落带、导水裂隙带、底板突破等工程地质现象为主的人为充水通道.

Based on the data from exploration,this paper analyzes in great detail the hydrogeological condition of Fengpo coal exploration area in Guiding County,Guizhou Province,which indicates that the area is a karst water filled deposit of complex hydrogeologic conditions,with karst water coming from the top and bottom at the same time.Prediction of future water filling factors suggests that the direct water filling source is the cavern water from the overlying P 3 w2and underlying P 2 m,and the indirect source is the surface water and atmospheric precipitation.Besides,the water is predicted to fill in through channels resulting from engineering geological phenomena,such as the rock caving zone,water flowing fractured zone and floor breakthrough,as a consequence of future mining.