摘要
为了准确判别复合含水层条件下封闭不良钻孔的突水水源,在分析矿井水文地质条件和地下水化学特征的基础上,排除了不可能为突水水源的第四系和延安组含水层,对于可能为突水水源的直罗组及其下段含水层,由于两者富水性和水化学条件较为相似,因此,采用了模糊聚类分析法,将突水点和直罗组及其下段含水层中的K++Na+、Ca2+、Mg2+、Cl-、SO2-4、HCO-3作为评价指标,并利用Matlab平台进行计算,将待判别水样划分为2类,其中突水点与直罗组下段含水层为一类。在确定了突水水源后,在井下对直罗组下段含水层进行注浆封孔,对突水点成功进行了封堵。对于水文地质和水化学条件相似的含水层,可以采用模糊聚类分析对突水水源进行有效判别。
In order to identify water- inrush source of poor sealed borehole under the compound aquifer,based on the analysis of hydrogeology and hydrochemistry conditions in coal mining,Quaternary and Yan＇an formation which were not water- inrush source were excluded. Zhiluo formation and its lower segment aquifer may be water- inrush resource. Because of the similarity of Zhiluo formation and its lower segment aquifer＇s water yield property and hydrochemistry conditions,fuzzy clustering analysis was adopted. K＋＋ Na＋、Ca2 ＋、Mg2 ＋、Cl-、SO2-4、HCO-3in water- inrush point,Zhiluo formation and its lower segment aquifer were selected as evaluation index. Matlab was used to calculate and the water samples were divided into two types; the water sample of water- inrush point was the same as Zhiluo formation lower segment aquifer. After determination of water- inrush source,the poor sealed borehole was sealed. For similar hydrogeology and hydrochemistry conditions of aquifer,fuzzy clustering analysis is effective method to identify the water- inrush resource.
出处
《煤矿安全》
CAS
北大核心
2015年第7期189-192,共4页
Safety in Coal Mines
基金
国家科技支撑计划资助项目(2012BAC10B03)
中煤科工集团西安研究院面上资助项目(2014MS010)
中煤科工集团青年基金资助项目(2014QN004)
关键词
模糊聚类
复合含水层
封闭不良钻孔
矿井突水
突水水源
fuzzy clustering
compound aquifer
poor sealed borehole
coal mine water-inrush
water-inrush source
