榆神矿区某煤矿开采对含水层结构影响程度浅析

Analysis of the Influence Degree of Mining on the Structure of Aquifer in a Coal Mine in Yushen Mining Area

煤炭资源的开发利用会造成含水层结构破坏,导致地下水渗漏。在煤矿开采过程中,煤层顶板及上覆地层失去支撑后发生变形产生裂隙,破坏含水层结构,改变地下水赋存环境,使地下水沿裂隙向下渗流,对地下水水位、水量产生影响。以榆神矿区某煤矿为例,通过资料收集、野外调查和综合整理分析,查明了其地表松散层厚度大、煤层上覆基岩薄、煤层埋藏浅、开采厚度大的基本特征。采用定量计算和定性分析相结合的方法,对该煤矿井工开采对地下水含水层结构的影响程度进行了预测分析,以期为同类矿山实施地下水资源保护提供借鉴。

The exploitation and utilization of coal resources will cause the damage of aquifer structure,leading to groundwater leakage.In the process of coal mining,the roof of the coal seam and the overlying strata will deform and produce cracks after losing support,which will damage the aquifer structure,change the groundwater storage environment,make groundwater flow downward along the cracks,and affect the groundwater level and quantity.Taking a coal mine in Yushen mining area as an example,through data collection,field investigation,and comprehensive analysis,the basic characteristics of large surface loose layer thickness,thin overlying bedrock of coal seams,shallow coal seam burial,and large mining thickness were identified.By using the method of quantitative calculation and qualitative analysis,the influence degree of underground mining on groundwater aquifer structure in this coal mine was predicted and analyzed,in order to provide reference for similar mines to implement groundwater resource protection.