中文摘要：

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。

英文摘要：

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 pattern is to learn where the water comes from. Related to the environment background with high groundwater level, it seems that water stored in coal mining subsidence areas may mainly come from groundwater, but by now this viewpoint has not been proved in detail yet. The article researched the law of water-ponding process in coal mining subsidence area by means of hydrological reasoning and water cycle simulation. In this paper, Huainan coal mining area is taken as study area, which is the largest coal production base of East China area with its coal reserves accounting for 74% of Anhui Province, and 50% of East China area. According to statistical data in 2010, after long-term coal mining activity of dozens of years, the maximum subsidence depth of Huainan coal mining area has reached 7.6m, and the ground subsidence area has reached 108.3 km2, along with the total subsidence volume of 0.314×109 m3. Some meaningful conclusions are drawn through our study. Firstly, the reason that the ground subsidence area is easily