贵州省孟溪镇某矿山地质环境特征及生态修复治理研究

Study on geological environment characteristics and ecological restoration of a mine in Mengxi Town,Guizhou Province

研究区位于云贵高原向湘西丘陵及四川盆地过渡的斜坡地带,出露地层有青白口系清水江组至寒武系牛蹄塘组及第四系。区内地震动反应谱特征周期为0.35s,其区域稳定性较好。矿区经多年开采,形成的地质环境问题表现为矿山地质灾害、地下含水层破坏、矿山地形地貌景观破坏、土地资源压占、地表水污染等。采取以格构锚杆护坡+挡土墙+截排水沟+矿山废弃建筑拆除+矿棚安装+复绿的方案进行矿山生态环境修复。通过矿山地质环境修复治理可取得较好的生态、社会、经济效益,促进生态良性循环。

The study area is located in the slope area of transition from Yunnan-Guizhou Plateau to Xiangxi Hills and Sichuan Basin.The outcrop strata include Qingshuijiang Formation of Qingbaikou System to Niutitang Formation of Cambrian system and the fourth system.The characteristic period of the seismic response spectrum is 0.35s,and the regional stability is good.After many years of mining in the mining area,the geological environment problems are manifested as mine geological disaster,underground aquifer destruction,mine landform landscape destruction,land resource occupation,surface water pollution and so on.The scheme of lattice anchor slope protection+retaining wall+cut-off drainage ditch+demolition of mine abandoned building+installation of mine shed+green restoration is adopted for the restoration of mine ecological environment.Better ecological,social and economic benefits can be obtained through the restoration and treatment of mine geological environment,and the ecological virtuous cycle can be promoted.