基于层次分析法的矿山地质环境评价——以北山成矿带为例

Evaluation of Mine Geological Environment Based on AHP——Taking Beishan Metallogenic Belt as an Example

根据北山成矿带矿区矿山自然地理、地质背景、矿山开发影响等实际因素,利用层次分析法建立矿山地质环境评价子系统和评价指标,确定评价因子及各指标权重,分别获得子系统权值和评价指标权值,并基于Arc GIS平台通过网格法对整个研究区进行矿山地质环境综合评价,利用模糊数学法将研究区地质环境分为无影响区、一般影响区、较严重影响区和严重影响区4级,最后针对每个影响区进行环境评价及分析。

According to the practical factors of natural geography, geological background and the impact of mining development, the analytic hierarchy process(AHP) is used to establish a mine geological environment evaluation subsystem and the evaluation index is analyzed to confirm the weight coefficient of the subsystem and the evaluation index. In addition, the mine geological environment comprehensive evaluation of the entire workspace is performed by the grid method based on ArcGIS. The mine area is evaluated and divided into a series of areas with the fuzzy mathematics including no affected area, general affected area, critical affected area and severe affected area. Finally the mine geological environment is analyzed and evaluated of these areas.