title: Simulating the hydrologic cycle in coal mining subsidence areas with a distributed hydrologic model.
abstract: 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 m3per 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.
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Chuiyu
authors.initials: C
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Qingyan
authors.initials: Q
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Weihua
authors.initials: W
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Lingjia
authors.initials: L
authors.lastname: Yan
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins, China Institute of Water Resources and Hydropower Research, Beijing, 100038, P. R. China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang