白银市神峰煤矿地质环境评估与恢复治理对策研究

Study on geological environment assessment and restoration countermeasures of Shenfeng Coal Mine in Baiyin City

白银市神峰煤矿位于祁连造山带走廊边缘坳陷带,赋矿地层主要为石炭二叠系和中侏罗统,煤层结构由东往西由简单变为复杂。煤层厚度0.69~39.46 m,平均厚度10.89 m,倾角在10°~14°,总体煤层趋势比较稳定。矿区开采过程中,因采空区造成了地面沉陷、边坡崩塌等地质环境问题;因取土场、煤矸石堆放、原煤储存、运输、建筑场地等造成了地形地貌景观破坏。通过对矿区野外实地调查、资料收集与分析、综合研究等方法,评估预测矿山地质环境问题,以及煤矿工程活动对土地造成的损毁情况。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,对神峰煤矿提出了地质环境治理方案,以达到对矿山地质环境保护与恢复治理的目的。

Shenfeng Coal mine in Baiyin City is located in the Qilian orogenic belt corridor margin depression belt.The ore-bearing strata are mainly carboniferous Permian and Middle Jurassic.The structure of coal seam changes from simple to complex from east to west.The thickness of coal seam is 0.69~39.46 m,with an average thickness of 10.89 m.The dip angle is generally between 10°~14°,and the overall trend of coal seam is relatively stable.In the process of mining,the goaf has caused geological environment problems such as ground subsidence and slope collapse.Destruction of landform and landscape is caused by earth collecting yard,coal gangue stacking,raw coal storage,transportation and construction site.Through field investigation,data collection and analysis,comprehensive research and other methods,this paper evaluates and predicts the problems of mine geological environment,as well as the damage to land caused by coal mine engineering activities.In order to realize the sustainable development of society and economy and minimize the pollution and damage of mining activities to the geological environment of the mine,this paper puts forward the geological environment treatment plan for Shenfeng Coal Mine,so as to achieve the purpose of the protection and restoration of the geological environment of the mine.