基于抽水法的煤矿矿区污染场地环境水文地质勘查研究

Hydrogeological survey research on polluted site environment in coal mining areas based on pumping method

煤矿过度开采会加重矿区场地环境污染,而矿区水文地质条件决定污染程度,在解决矿区污染前,应先勘查矿区场地环境水文地质。为此,提出矿区污染场地环境水文地质勘查技术研究方法。以榆林市矿区为研究对象,根据榆林市矿区自然环境分析了矿区场地环境污染因素,基于分析结果制定勘查方案。通过抽水法对矿区污染场地环境水文地质勘查点的布设及样品采样,开展了矿区地下水化学分析、水位高程测量、抽水试验等勘查工作。经研究发现,矿区污染场地生活区污水处理站渗漏水会给矿区含水层带来一定污染影响,此外,矿区污染场地环境水文地质含水层的渗透性及补给条件差,加重了地下水污染。

Overmining coal mines can exacerbate environmental pollution in mining areas and the hydrogeological conditions of the mining area environment determine the degree of pollution.Before addressing the pollution in mining areas,it is necessary to first survey the hydrogeological of the mining area site.Therefore,a research method for hydrogeological survey technology of polluted mining areas was proposed.This method took the Yulin mining area as the research object and analyzed the environmental pollution factors of the mining area site based on the natural environment of the Yulin mining area.Based on the analysis results,a survey plan was developed.The layout and sampling of hydrogeological survey points for polluted sites in mining areas were carried out through the pumping method,and exploration work such as chemical analysis of groundwater in the mining area,measurement of water level elevation,and pumping tests were carried out.Through research,it was found that the leakage of water from the sewage treatment station in the polluted living area of the mining area would have a certain pollution impact on the aquifer of the mining area.In addition,the poor permeability and recharge conditions of the hydrogeological aquifer in the polluted site environment of the mining area have exacerbated groundwater pollution.