甘肃魏家地煤矿矿山环境特征评估及生态恢复

Assessment of environmental characteristics and ecological restoration in Weijiadi Coal Mine,Gansu

魏家地煤矿位于甘肃省白银市,矿山采用立井开拓方式综采放顶煤采煤方法,生产能力为300万t/a,矿区内主要采煤区为西一采区1、2、3煤层,东一采区开采1煤层,西二采区开采1、2煤层,煤矿共有采空区1处,面积为5.03 km^(2),因采煤造成了一系列的矿山地质环境问题。通过对魏家地煤矿矿区进行野外实地调查、资料收集与分析、综合研究等,评估矿山地质环境主要为崩塌、地面塌陷等,以及煤矿工程活动对土地造成的损毁,包括土地压占损毁、土地挖损、塌陷损毁等。为了实现社会经济的可持续发展,最大限度地减轻矿业活动对矿山地质环境的污染与破坏,对魏家地煤矿提出地质环境治理方案,实现了对矿山地质环境的保护与恢复治理。

Weijiadi Coal Mine is located in Baiyin City,Gansu Province.The mine adopts vertical shaft development method for fully-mechanized top coal caving mining method,with a production capacity of 3 million t/a.The main mining areas in the mining area are the No.1,No.2,and No.3 coal seams in the first mining area.No.1 coal seam is mined in the first mining area of the east,and coal seams No.1 and No.2 are mined in the second mining area of the west,and one goaf area in the coal mine with an area of 5.03 km^(2),which has caused a series of mine geological environmental problems due to coal mining.Through field investigation,data collection and analysis,and comprehensive research in the Weijiadi Coal Mine area,it was estimated that the geological environment of the mine was mainly collapsed,ground subsidence,etc.,as well as the damage to the land caused by coal engineering activities,including land occupation damage,land excavation,collapse,damage,etc.In order to realize the sustainable development of the social economy and minimize the pollution and damage to the geological environment of the mine by mining activities,a geological environment treatment plan was proposed for the Weijiadi Coal Mine to realize the protection and restoration of the geological environment of the mine.