孙洁

• 1:中煤科工集团西安研究院有限公司
• 2:陕西省煤矿水害防治技术重点实验室

摘要(Abstract)：

为了查清呼吉尔特矿区深埋煤层顶板"七里镇砂岩"直接充水含水层富水特征,在确定地质结构特征和关键含水层空间展布的基础上,研究了不同尺度(工作面、单个矿井、煤矿群)下涌水演化和水位变化规律。结果表明:研究区顶板疏放水钻孔涌水量具"两侧小、中间大"的特点,顶板疏放水钻孔涌水量与"七里镇砂岩"厚度对应性较好,显示"七里镇砂岩"含水层是该地区煤层顶板最主要的直接充水含水层。对煤层顶板直接充水含水层进行大型煤矿群(近4 000万t产能)超大型疏放水,矿区涌水量随着井下采掘活动强度的增加而持续增加,2018年已达到7 029.75 m~3/h,且未出现稳定或衰减现象,表明"七里镇砂岩"动态补给较好;这个过程中"七里镇砂岩"含水层水位下降明显,白垩系水位则基本不变,表明浅部含水层与深部含水层之间水力联系较差,"七里镇砂岩"以侧向补给为主。综上,呼吉尔特矿区煤层顶板"七里镇砂岩"具有水量大、水压高、富水性不均一、补给好的特点。

关键词(KeyWords)： “七里镇砂岩”;强富水;煤矿群疏水;水力联系;呼吉尔特矿区

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41302214);; 中煤科工集团西安研究院有限公司创新基金面上项目(2018XAYMS03)

作者(Author): 孙洁

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