Simulating the hydrologic cycle in coal mining subsidence areas with a distributed hydrologic model.
Simulating the hydrologic cycle in coal mining subsidence areas with a distributed hydrologic model.
复制标题
使用分布式水文模型模拟煤矿矿业沉降区域中的水文循环。
DOI：
10.1038/srep39983
复制
发表时间：
2017-01-20
影响因子：
4.6
通讯作者：
Zhang B
中科院分区：
文献类型：
--
作者：
Wang J;Lu C;Sun Q;Xiao W;Cao G;Li H;Yan L;Zhang B
煤矿开采和充水引起的大规模地面沉降，特别是在高潜水位平原地区，会造成严重的环境问题和经济损失。阐明塌陷区的水文循环规律，对塌陷区的环境修复具有重要的实用价值，为塌陷区水资源的开发利用提供科学依据。在这里，我们提出了一种模拟方法来描述之间的相互作用的沉陷区水（SW）和几个水文因子的河流-沉降-地下水模型（RSGM），这是基于分布式水文模型。水量平衡分析表明，由于平原区地下水流较弱，地下水对SW的补给量仅占总补给量的一小部分。SW与地下水的相互作用具有明显的年周期。西南地区在丰水期基本上是地下水的净源，在枯水期基本上是地下水的净汇。结果表明，淮南采煤塌陷区年平均可利用水量为9.0534亿m3。如果能够将这些塌陷区纳入水资源规划，将加强日益脆弱的供水基础设施。
Large-scale ground subsidence caused by coal mining and subsequent water-filling leads to serious environmental problems and economic losses, especially in plains with a high phreatic water level. Clarifying the hydrologic cycle in subsidence areas has important practical value for environmental remediation, and provides a scientific basis for water resource development and utilisation of the subsidence areas. Here we present a simulation approach to describe interactions between subsidence area water (SW) and several hydrologic factors from the River-Subsidence-Groundwater Model (RSGM), which is developed based on the distributed hydrologic model. Analysis of water balance shows that the recharge of SW from groundwater only accounts for a small fraction of the total water source, due to weak groundwater flow in the plain. The interaction between SW and groundwater has an obvious annual cycle. The SW basically performs as a net source of groundwater in the wet season, and a net sink for groundwater in the dry season. The results show there is an average 905.34 million m3 per year of water available through the Huainan coal mining subsidence areas (HCMSs). If these subsidence areas can be integrated into water resource planning, the increasingly precarious water supply infrastructure will be strengthened.