Summary of 5 major regional mine environmental geological problems, and explain the mine environmental restoration mode!

2.3 Plain basin area

The environmental geological problems caused by coal, phosphorus, iron and construction sand mining in this area are more serious, and the ground collapse caused by coal mining is the most prominent problem. The second is the death of the people caused by the fall of the groundwater level, the debris flow and the collapse caused by the occupation and destruction of the land and the drainage of the mine. Coal mining subsidence in Xuzhou, Jiangsu province has developed into a national typical, and the ground subsidence area accounts for more than 98% of the total subsidence area in the province, and the subsidence continues to expand. The coal mining areas with serious problems are mainly located in Baolixile coal mine area in Inner Mongolia, Jalainur Coal Mine area, Tieling Tiaobingshan Coal mine area in Inner Mongolia, Yinchuan and Hetao Plain area in Wuhai Coal mine area in Inner Mongolia, Shizuishan Coal mine area in Ningxia, Tangshan Kailuan Coal Mine in North China and the middle and lower reaches of Yangtze River Plain area, and Yima Coal Mine in Henan Province Mine, Shandong Jining - Zaozhuang Coal mine, Anhui Lianghuai Coal mine, Jiangsu Xuzhou coal mine, Hunan Loudi Coal mine, Changsha Ningxiang Coal mine and other mining areas.

2.4 Loess Plateau area

The ecological environment in this area is fragile, so the mineral exploitation intensity is medium, and the main environmental geological problems in this area are coal mines and metal mines. Weibei Coal mine area in Shaanxi province is a serious mining area that has damaged the environment. In Tongchuan Coal mine area in Shaanxi Province, the groundwater level of the mining area has decreased due to the influence of coal mining. The metal mines are mainly Baiyin copper mining area and Lashuixia copper-nickel mining area, which contain a large amount of heavy metal acid water in the wastewater of the mine area, and its discharge is large, which causes great pollution to the surrounding environment.

2.5 Gobi Desert region and permafrost region

The sand area and permafrost area of the Gobi desert belong to the fragile ecological environment, the natural environment conditions are poor, and the development intensity of the mining area is low, so the mining in this zone mainly focuses on the protection of the ecological environment.