新疆非金属露天开采矿山地质环境评价指标体系与模型建立

Evaluation model and evaluation index system of geological environmental impact degree of non-metallic mine in Xinjiang

本文在充分考虑新疆地区非金属矿山地质环境破坏特点的基础上,选取矿山开采引发或加剧地质灾害规模、地质灾害威胁人员数量、矿山设施挖损或压占破坏土地后地面主导坡度、挖损最大深度或压占堆积物最大高度、挖损体积或堆积物体积、损毁土地面积6个评价因子,建立了适合该地区非金属矿山地质环境影响程度评价的指标体系。然后应用Fisher判别分析法以新疆地区11个矿山的72个评价单元作为研究对象,建立了非金属矿山地质环境影响程度评价模型。用新疆哈密市裤子山饰面石材花岗岩矿9个矿山单元进行模型准确性检验,检验结果理想。该评价指标体系和评价模型对新疆地区非金属矿山地质环境影响程度评价研究具有极大的参考价值。

This paper established the evaluation index system and evaluation model of nonmetal mine geology environment in Xinjiang which combined with Xinjiang non-metallic mine geological features and in consideration of the influence of mine geological environment impact evaluation factors.The evaluation index system was composited of the mining exploitation caused or aggravated by geological disasters scale,geological disasters of the threat to personnel quantity,mine facilities dug loss or pressure the total destruction of land ground leading slope,dig the maximum loss in depth or pressure accumulation maximum height,dug loss volume or bulk volume and the area of damaged land.Based on 72 evaluation units of 11 mines in Xinjiang area as learning samples,the evaluation model of nonmetal mine geology environment was established,and the model was tested by the method of return generation,and the correct rate was 98.6%.The evaluation model is applied to the granite mine of Hami city,Xinjiang,and the 9 evaluation units of the mine are analyzed and evaluated,and the result is satisfactory.The evaluation index system and model have a certain reference value for the assessment of the impact degree of nonmetallic mine geological environment in Xinjiang area.