基于改进富水性指数法的灰岩含水层富水性评价  

Water richness evaluation of limestone aquifer based on improved water richness index method

作　　者：王洋[1] 申建军[1] 

机构地区：[1]中国矿业大学(北京)国家煤矿水害防治工程技术研究中心,北京100083

出　　处：《煤炭工程》2016年第B11期141-144,共4页Coal Engineering

基　　金：国家自然科学基金资助项目(41272276)

摘　　要：为解决传统富水性指数法中不能有效反映各指标内部的差异性及断层周边的富水性,引入具有自相似特征的断层分维和分区变权模型对煤层底板灰岩含水层富水性进行新的评价。以单侯矿井为例,在分析矿井地质及水文地质条件的基础上,构建含有断层分维值这一主控因素在内的评价指标体系,采用分段强激励-惩罚型变权模型对其进行评价,并与传统的富水性评价结果进行比较。结果表明:改进的富水性指数法能够更全面、准确的反映出断层构造对矿井底板含水层富水性的控制作用,并且使得评价结果更具有离散性,更容易划分评价等级,以及更加合理地反映每个评价单元的真实情况,从而提高了矿井底板含水层富水性评价的精度和实用价值。In order to overcome the irrationality of the weight distribution and fault indicator characterization in the constant water richness assessment model, this paper introduced the fractal dimension and zoning variable weight comprehensive model into the system of water richness evaluation. The paper established the water richness evaluation index system including the index of fractal dimension for limestone aquifer under thin floor based on the analyses of hydrogeological conditions and water inrush risk of Danhou mine; and calculated the constant weights, known as ＂the basic weights＂, by the analytical hierarchy process; then built up a segmented strong incentive-penalty variable weight synthetic model and calculate the variable weights for each index of basic assessment unit; and finally calculated the final water-richness evaluation result of limestone aquifer under thin floor. The evaluation results were compared with the traditional evaluation methods, the result indicates that the new evaluation method can comprehensively and precisely reflect the water richness control effect of fault on coal floor aquifer, and makes the evaluation result more discrete, which easily divides the quality grades for aquifer water richness, and more reasonably reflect the true situation of each evaluation unit.

关 键 词：断层分维 变权模型 状态变权函数 富水性评价 

分 类 号：TD741[矿业工程—矿井通风与安全]