矿山地质环境承载力与压力定量评价

Quantitative evaluation of mining geo-environmental carrying capability and pressure

采用层次分析法进行矿山地质环境承载力与压力定量评价,分别选取地质地貌、盖层性质、水文地质、构造界面4个因素作为承载力准则层,选择土地压力、煤炭压力、水压力3个因素作为压力准则层,遴选准则层所涵盖的关键因素作为指标层建立评价指标体系。利用标准量化以及升半梯形分布函数进行指标层赋值,选用特征根法,经归一化处理计算指标层各权重值。运用承载指数与压力指数对目标层逐层进行加权计算出评价分值。以云驾岭矿为例,应用已建立的评价体系对矿山地质环境承载力与压力进行定量评价,结果表明其承载力为较高承载,压力为中压,矿山地质环境状况良好。

To do quantitative evaluation of the geo - environmental carrying capacity and the pressure of coal mine through analytic hierarchy process, thus four factors such as geology geomorphology, cov- er properties, hydrogeology and structural interface, will be chosen as the criterion layer of carrying capacity; land pressure, coal pressure and hydraulic pressure will be selected to be as the criterion layer of pressure, and the key factors included in the criterion layer will be regarded as evaluation in- dex system of indicator layer establishment. The indicator layer is assigned by using standard quanti- zation and rise semi- trapezoid distribution function; otherwise, the eigenvalue method will be used to evaluate all the weight value of the indicator layer trough normalization processing. The carrying in- dex and pressure index are used to work out evaluation score by weighted computing layer by layer which aims at target layer. Taking Yunjialing mine for an example, the quantitative evaluation of the geo - environmental carrying capacity and the pressure of coal mine are established by applying the e- valuation index system, the result turned out that the capacity is the higher capacity, the pressure is the medium pressure, and the condition of the geo - environment of mine is good.