甘肃省宕昌县赵家湾锑矿环境地质条件浅析

Analysis of Zhaojiawan Antimony Mine in Dangchang County,Gansu Province

矿区位于甘肃省宕昌县东南部与礼县交界处,行政区划隶属于宕昌县竹园乡管辖,工区内为西秦岭中山森林区景观,地表几乎被灌木和林木覆盖,山体延绵,地势较陡,地形总体为西高东低,北高南低,地势切割剧烈,北部大山一带海拔最高2778.5m,高差800m~1200m,山岳特征显著。区内主要河流为白关河,向东南汇入西汉水,可满足生活、生产的需求。矿区渣堆均为不稳定斜坡地质灾害隐患区,坡度陡,高差大,个别渣堆存在很多岩体裂隙,遇到强降雨天气及其他地质灾害等外力作用影响下,非常容易发生滑塌,对于矿渣下部山脚居民生产生活产生威胁,且矿渣中的重金属离子可能在雨水冲刷、淋融作用下析出,对地下水和土壤造成污染,采矿活动对地貌环境产生一定的破坏,矿区地下水地表水均存在不同程度的超标(对比地表水、地下水三类标准),环境地质条件中等。

Mining area is located in the southeast of Gansu province dangchang county and li county junction,administrative divisions of bamboo garden township jurisdiction,work area for the west qinling Zhongshan forest landscape,almost covered by shrubs and trees,mountain,steep terrain,terrain overall west high east low,north high south low,terrain cutting,the northern mountain area of the highest 2778.5m,elevation difference 800m~1200m,mountain features.The main river in the area is Baiguan River,which flows into the southeast of the Western Han Dynasty,which can meet the needs of life and production.Mining slag heap are unstable slope geological hazard area,steep slope,high difference,individual slag heap has a lot of rock cracks,encounter heavy rainfall weather and other geological disasters under the influence of external force,very easy to collapse,for the slag bottom mountain residents production and living threat,and heavy metal ions in the slag may in rain erosion,melting,groundwater and soil pollution,mining activities to the landscape environment,mining groundwater surface water are different degrees of overweight(contrast surface water,groundwater standards),environmental geological conditions of medium.