Affiliation:
1. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, China
2. School of Geomatics, Anhui University of Science and Technology, Huainan 232001, China
3. School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
Abstract
Coal mining causes surface subsidence, and the accumulated water body is constantly affected by the mining microseism in this process. Understanding the relationship between the subsided water quality and microseism plays a special role in assessing the environmental impact of mining activities. Based on sampling and monitoring, analyzing, and evaluating the Pansan subsided water area of Huainan, the influence of microseism activity on heavy metal elements in subsided water was verified. We found that the microseism effects decreased the contents of Zn, Pb, and Cu in the subsided water by 43.76%, 35.88%, and 28.83%, respectively, and Cd was not detected. The mechanism of heavy metal evolution in the water–sediment system under microseism factors was further explored by simulating experiments with similar materials. The results showed that the mining microseism increases the heavy metal adsorption capacity of suspended solids, and the dissolved heavy metals in water were transformed into suspended heavy metals. The heavy metals of subsided water eventually accumulate in the sediment, and the purpose of controlling heavy metal pollution can be achieved through regular cleaning of the bottom sediment.
Funder
National Natural Science Foundation of China
Department of Science and Technology of Anhui Province
Science and Technology Bureau of Huainan City
State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines
Anhui University of Science and Technology
Anhui Construction Engineering Group
Huaibei Mining (Group) Co., Ltd.
Subject
Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry