煤层底板突水危险性综合评价

基于煤层底板突水预测的复杂性,提出了基于GIS与熵权耦技术的煤层底板突水危险性的综合评价方法,在分析山东某矿区的水文地质、工程地质,开采及勘探等资料的基础上,根据研究区断层构造,覆岩厚度,关键含水层富水性,开采厚度等影响水资源保护性开采的主要因素,以地理信息系统(GIS)的多因素空间分析功能为操作平台,并结合熵权法模型确定各个影响因素的权重,通过GIS与熵权耦合建立了煤层底板突水危险性分区评价模型,结果表明煤层底板突水危险性指数法比传统的突水系数法有明显优势。

Comprehensive Evaluation of Water-inrush Risk from Coal Floor

Based on the complexity of water inrush risk for coal seam floor,a comprehensive evaluating method will be put forward to estimate the floor water inrush risk in the western mining area with the help of coupling technique of GIS and entropy.After analyzing the data collected from hydrological geology,engineering geology,mining and exploration of a mine in Shandong province,taking the spatial analyzing function of the various factors of the geographic information system(GIS) as the operating platform and combining the method of entropy model to determine the weighted percentage of each factor,the evaluation model will be established through combing GIS and entropy coupling according to the main factors influencing on the protective exploit of water resources such as the fault structure,thickness of the overburden rock,water-hearing capability of the key aquifer,thickness of the seam mining.The result indicates that water-inrush risk index method has distinct predominance over water-inrush coefficient method.