焦作矿区水文地质条件复杂, 矿井水害严重, 探明矿区含水层组间的水力联系特征, 可为水害防治提供科学依 据。根据焦作矿区已有的地质、水文地质资料, 从当地构造、矿区的水化学和同位素特征三个角度进行分析, 发现矿 区内奥陶系含水层与石炭系含水层之间有较强的水力联系, 且石炭系含水层的主要补给来源为奥陶系含水层; 二叠 砂岩含水层除了与石炭系含水层存在微弱的水力联系外, 与其他含水层无密切联系; 第四系含水层的主要补给来源 为地表水; 地表水及第四系含水层可通过断裂通道补给下部的奥陶及石炭系含水层。

Jiaozuo Mine Area has complex hy dr og eo lo gical conditio ns w ith ser ious mine w ater damag e, determination of the hy2 draulic connectio n betw een the aquifer g ro ups can pr ov ide the scientific support fo r water damage contro l. Accor ding to the g eo2 log ical and hy dr og eolo gica l data, the hydraulic connectio n characterist ics bet ween the aquifer gr oups wer e analy zed fr om the per2 spect ives of constr uctio n, mine water chemistr y, and enviro nmental iso topic char acter istics. T he r esults showed that ( 1) t he Or2 dov ician and Carbonifer ous aquifers hav e a str ong hydraulic co nnection and the main r echar ge source of the Car bo nifer ous aqui2 fer is Or do vician aquifer ; ( 2) the Permian sandstone aquifer has no hy dr aulic connectio n w ith other aquifers except fo r the Car2 bonifer ous aquifer; ( 3) the main recharg e so ur ce of the Quater nar y aquifer is surface w ater; and ( 4) the surface water and Qua2 ter nar y aquifer can rechar ge the Ordovician and Car bonifero us aquifer s throug h the tectonic fault in the mine area.

国家自然科学基金重点项目( 41130637)