顶板风化基岩含水层富水性评价

Evaluation of Water-richness in Weathering Bedrock Aquifer of Roof

在总结柠条塔煤矿南翼水文地质条件的基础上,优选影响2^-2煤层顶板风化基岩、直罗组砂岩含水层富水性的主控因素,采用层次分析法计算各主控因素的权重,运用GIS将影响含水层富水性的各主控因素依据权重复合叠加得出富水性分区综合图。研究表明:柠条塔煤矿南翼2^-2煤层顶板风化基岩裂隙含水层南部及西南部富水性较强;直罗组砂岩裂隙含水层的富水性整体上弱-中等,富水性较强区域主要位于研究区的西南部。

On the basis of summarizing the hydrogeological conditions for the southern of Ningtiaota coal mine,the main controlling factors for the water-richness of weathering bedrock overlying the 2^-2 coal seam and the Zhiluo formation were optimal selected. Using analytic hierarchy process(AHP) to calculate the weights of main controlling factors,the final comprehensive division program of water-richness is presented through overlapping of multiple source geo-information according to the weight.The result shows that the water-richness of the southern and southwest part is stronger for weathering bedrock overlying the 2^-2 coal seam;as for the Zhiluo formation,the water-richness is generally weak to moderate, and the water-richness area is mainly located in the southwest.