淮南采煤沉陷区积水过程地下水作用机制

高潜水位采煤沉陷区容易积水,地下水在其中所起的作用相关研究不足。该文借助相关水文推理和数值模拟分析,对淮南典型孤立采煤沉陷区的地下水作用机制进行了辨析,取得的主要研究结论为：当地降水、蒸发水文条件是孤立沉陷区积水的控制性因素,一般年份下没有地下水的补给作用其积水面积比也能达到71%左右;由于淮北平原地势平缓,地下水径流微弱,水平衡定量分析表明典型沉陷区的地下水补给量仅占其积水来源百分之几的数量级;在一个水文年内,地下水与采煤沉陷区积水间的作用过程具有明显的阶段性特征,在汛期基本上表现为沉陷区积水向地下水的净渗漏,在非汛期基本上表现为地下水净补给。该文可为淮南矿区及中国华东类似采煤沉陷区的水资源...

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Bibliographic Details
Published in农业工程学报 Vol. 31; no. 10; pp. 122 - 131
Main Author 陆垂裕 陆春辉 李慧 柳炳俊 孙青言 李翠
Format Journal Article
LanguageChinese
Published 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京,100038%煤矿生态保护国家工程实验室,淮南,232001 2015
Subjects
地下水
水循环
水文模拟
淮南矿区
积水机理
采煤沉陷
降水
积水机理
淮南矿区
地下水
ground water
水文模拟
subsidence due to coal mining
采煤沉陷
precipitation
Huainan coal mining area
降水
水循环
water-ponding mechanism
water recycling
water cycle simulation
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2015.10.017

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Summary:高潜水位采煤沉陷区容易积水,地下水在其中所起的作用相关研究不足。该文借助相关水文推理和数值模拟分析,对淮南典型孤立采煤沉陷区的地下水作用机制进行了辨析,取得的主要研究结论为：当地降水、蒸发水文条件是孤立沉陷区积水的控制性因素,一般年份下没有地下水的补给作用其积水面积比也能达到71%左右;由于淮北平原地势平缓,地下水径流微弱,水平衡定量分析表明典型沉陷区的地下水补给量仅占其积水来源百分之几的数量级;在一个水文年内,地下水与采煤沉陷区积水间的作用过程具有明显的阶段性特征,在汛期基本上表现为沉陷区积水向地下水的净渗漏,在非汛期基本上表现为地下水净补给。该文可为淮南矿区及中国华东类似采煤沉陷区的水资源利用研究提供一定的参考。
Bibliography:11-2047/S
Groundsubsidence caused by coal mining activity commonly exists in the coal belt of China eastern plain area. Subsidence area is on average 0.18-0.33 hm2 per ten thousand tons of coal mining. The subsidence coefficient there is about 0.8-0.9, which means coal mining of one cubic meters result in ground subsidence of 0.8-0.9 m3. In the environment with high groundwater level, the situation is worse, for once the ground sinks due to coal mining, large area of water-ponding occurs. Due to limited source of backfill material, high cost, the long time needed to wait for the stable state of subsidence and other factors, traditional land remediation pattern for coal mining subsidence in China faces difficulties, and land reclamation rate by now is only 12%. From other point of view, coal mining subsidence area is potentially useful water storage structure, and recently some researchers start to study a new remediation pattern of using them for water resource development. However, a prerequisite for the new
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2015.10.017