基于AHP与独立性权系数综合确权的煤矿含水层富水性评价  

Evaluation of Coal Mine Aquifer Water-Richness Based on AHP and Independent Weight Coefficient Method

作　　者：毕尧山 吴基文[1] 翟晓荣[1] 沈书豪 胡儒 琚棋定 BI Yaoshan;WU Jiwen;ZHAI Xiaorong;SHEN Shuhao;HU Ru;JU Qiding(Earth and Environment School,Anhui University ofScience and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《水文》2020年第4期40-45,共6页Journal of China Hydrology

基　　金：国家自然科学基金项目(41272278);安徽高校自然科学重点项目(KJ2017A073);安徽高校科研平台创新团队建设项目(2016-2018-24)。

摘　　要：为克服传统多源信息融合方法在评价含水层富水性中多采用单一主、客观赋权的不足,以徐庄煤矿为例,在充分考虑影响7煤顶板(即山西组7煤至下石盒子组底界之间的层段)砂岩含水层富水性各因素的基础上,确定了断裂分维、平面变形系数、断层强度、砂岩含水层厚度、砂泥比、岩芯采取率、钻孔冲洗液消耗量、井下涌(突)水点涌水量作为影响其富水性的8大主控因素;采用AHP法和独立性权系数法分别计算了各主控因素的主、客观权重,通过乘法合成归一法得到综合权重,结果表明:褶皱平面变形系数、断裂分维对7煤顶板砂岩含水层富水性影响大,钻孔冲洗液消耗量、岩芯采取率、砂泥比对其富水性影响小;建立了基于AHP与独立性权系数法综合确权的含水层富水性指数法评价模型,通过ArcGIS得到了研究区含水层富水性分区图,并通过已知突水点的分布,对该评价模型进行识别与检验,验证了该模型评价效果的准确性,圈定了顶板防治水的重点靶区。本研究成果为预测矿井含水层富水性强弱、防治顶板水害问题提供了有益参考。Taking Xuzhuang Coal Mine as a case,in order to overcome the shortcomings of traditional multi-source information fusion methods in using a single subjective or objective weighting method to evaluate the water-richness,8 major controlling factors were selected based on the fully consideration of various factors affecting the No.7 coal roof sandstone aquifer(the No.7 coal roof referred to in the article is the interval between the No.7 coal of the Shanxi Formation and the bottom boundary of the Lower Shihezi Formation).This paper calculated the subjective and objective weights of each main controlling factor respectively by the AHP and independent weight coefficient methods,and obtained the comprehensive weight by the multiplicative synthesis normalization.The results show that the sandstone aquifer water-richness in the No.7 coal roof are greatly affected on the fold plane deformation coefficient and the fractal dimension of fault while less on drilling fluid consumption,the core rate and mudstone ratio.Besides,this paper established an evaluation model of water-richness index based on AHP and independent weight coefficient method,and obtained the water-richness partition map of the aquifer by ArcGIS.The evaluation model is identified and tested by the distribution of the known water bursting points,and the accuracy of it is also verified.Then,the key area for water prevention is targeted.The above results would provide a useful reference for predicting the water-richness strength of aquifers and preventing and controlling of roof water damage.

关 键 词：煤层顶板 层次分析法 独立性权系数法 含水层富水性 多源信息融合 

分 类 号：TD745[矿业工程—矿井通风与安全]