陇南市杜家阳沟灰岩矿地质环境特征与恢复治理研究

Study on geological environment characteristics and restoration management of limestone mine in Dujiayanggou,Longnan City

杜家阳沟建筑灰岩矿生产规模为中型,矿山地质环境条件复杂程度分级为中等。根据矿山地质环境现状评估结果,现状发育1处不稳定斜坡和1条泥石流对矿山地质环境的影响程度为较严重;露天开采对含水层的影响或破坏程度较轻;采矿活动对评估区地形地貌景观的影响或破坏程度为严重或较轻;对土地资源的影响或破坏程度为较严重或较轻。采矿活动形成了露天采场1处、生活办公区1处、工业场地1处、矿山道路约1300 m,挖损、占压损毁土地面积约5.39 hm^(2)。造成土地毁坏、山体破损、岩石裸露、植被破坏等现象,致使土地植被景观、天然地质遗迹产生一定的影响或破坏。通过建筑物拆除+场地平整+坡面清理+覆土+植被绿化等治理工程的实施,减少了地质灾害的发生,增加了土地绿化面积,保证矿山开发和生态环境可持续发展。

The production scale of Dujiayanggou building limestone mine is medium,and the complexity degree of mine geological environment is medium.According to the evaluation results of the current situation of mine geological environment,the current development of one unstable slope and one debris flow has a relatively serious impact on the geological environment of the mine,and the influence or destruction degree of open-pit mining on aquifer is light.The impact or damage of mining activities on the terrain and landscape of the assessment area is severe or relatively minor,the impact or damage to land resources is relatively severe or relatively minor.The mining activity has formed one open-pit mining area,one living and working area,one industrial site,1300 m mining roads.The area of land damaged by excavation and occupation is approximately 5.39 hm^(2).Causing land damage,mountain damage,rock exposure,vegetation damage,and other phenomena,resulting in certain impacts or damage to the land vegetation landscape and natural geological relics.The implementation of governance projects such as building demolition+site leveling+slope cleaning+soil covering+vegetation greening can reduce the occurrence of geological disasters,increase the land greening area,and ensure the sustainable development of mining development and ecological environment.