新疆火烧云—大红柳滩铅锌锂资源基地矿产资源开发对地质环境影响分析

Geological Environment Influence from Mineral Resource Development in Huoshaoyun-Dahongliutan Pb-Zn-Li Resource Base,Xinjiang

研究区位于青藏高原西北缘喀喇昆仑山脉主脊北侧,平均海拔5000m以上,矿产资源丰富。区域新构造运动强烈,断裂构造发育,岩土体类型多样,水文地质条件复杂,部分地段不良地质现象发育,资源基地地质环境条件总体较差。本文采用层次分析法,选择矿产资源条件、矿山开发方式、地质环境条件为评价因素,评价指标为大型矿床数量、矿山规模、开采方式、选冶方式、地形地貌、地质灾害易发程度和地下水埋深,采用专家咨询法确定权重,评价火烧云一带、多宝山一带以及大红柳滩一带矿产资源开发对地质环境的影响程度,认为未来资源基地矿产资源开发对地质环境的影响较小,影响程度均为轻度。

The study area is located in the northern margin of Karakoram main ridge,northwest of the Qinghai-Tibet Plateau,with an average altitude of over 5000 m above sea level,which is abundant in mineral resources.In this region,there are intense neotectonism,complicated fault structure and various types of rock and soil.The regional hydrogeological condition is very complex,and the adverse geological phenomena are well developed in some parts.The geological environment conditions are generally poor.By means of analytic hierarchy process,mineral resources,mine development methods and geological environmental conditions are selected as basic factors and relevant indexes including the number of large-scale deposits,mine scale,mining method,dressing and smelting method,topography,geological disaster susceptibility and groundwater depth are selected to act as evaluating factors which adopts expert consultation method to determine weight to predict and analyze the geological environmental influence of mineral resources development of Pb-Zn-Li mine in Huoshaoyun,Duobaoshan and Dahongliutan areas.The article considers that,the environmental impacts of mining activities are slightly and the degree of influence is mild.