脆弱性指数法在1煤层底板岩溶突水评价中应用——以新集二矿为例
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摘要
随着煤矿开采强度与深度不断增加,煤层底板灰岩岩溶突水问题日益严重,逐渐成为煤矿防治水工作的重点。以新集二矿1煤层底板岩溶水为研究对象,利用基于GIS的AHP型脆弱性指数法对煤层底板岩溶突水进行脆弱性分区评价,根据统计分析计算出的分级阀值将研究区分为脆弱区(Ⅰ区)、较脆弱区(Ⅱ区)、过渡区(Ⅲ区)、较安全区(Ⅳ区)和相对安全区(Ⅴ区)等五个区域。研究结果表明:研究区的1煤底板的C_3~(1～4)灰、C_3~(4～13)灰和奥陶系岩溶突水区域自西向东,由相对安全区逐渐向脆弱区过渡,奥陶系岩溶突水脆弱性比太原组增大,且断层区域多为突水脆弱区。
With the increasing of coal mining intensity and depth,the karst water inrush problem of coal floor limestone becomes more and more serious,which gradually becomes the focus of coal mine water control. Taken karst water inrush from No. 1 Coal Seam Floor in No. 2 Xinji Coal Mine as the research object,vulnerability division assessment was made in karst water inrush area by the AHP model vulnerability index method based on GIS. According to graded threshold of the statistical analysis,research area was divided into vulnerable area( Ⅰ area),a fragile area( Ⅱ area),transition zone( Ⅲ area),and a safety zone( Ⅳ area) and relative safety( Ⅴ area) etc.The results show that relative security zone of water inrush area from C_3~(1 ～ 4),C_3~(4 ～ 13) and the ordovician limestone under coal floor is transited to fragile area from west to east gradually,and water inrush vulnerability of the ordovician karst is greater than that in Taiyuan group,and the fault areas are mostly of water inrush fragile areas.
With the increasing of coal mining intensity and depth,the karst water inrush problem of coal floor limestone becomes more and more serious,which gradually becomes the focus of coal mine water control. Taken karst water inrush from No. 1 Coal Seam Floor in No. 2 Xinji Coal Mine as the research object,vulnerability division assessment was made in karst water inrush area by the AHP model vulnerability index method based on GIS. According to graded threshold of the statistical analysis,research area was divided into vulnerable area( Ⅰ area),a fragile area( Ⅱ area),transition zone( Ⅲ area),and a safety zone( Ⅳ area) and relative safety( Ⅴ area) etc.The results show that relative security zone of water inrush area from C_3~(1 ～ 4),C_3~(4 ～ 13) and the ordovician limestone under coal floor is transited to fragile area from west to east gradually,and water inrush vulnerability of the ordovician karst is greater than that in Taiyuan group,and the fault areas are mostly of water inrush fragile areas.
引文
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[2]钱鸣高,缪协兴,许家林.岩层控制中的关键层理论研究[J].煤炭学报,1996(3):225-230.
[3] SHI L Q,HAN J. Theory and practice of dividing coalmining area floor into four-zone[J]. Journal of China U-niversity of Mining&Technology,2005,34(1):16-23.
[4] HE BAOHUA. Numerical simulation analysis of karsttunnel water bursting movement[J]. Electronic Journalof Geotechnical Engi neering,2015,20(25):1-12.
[5]武强,张志龙,张生元,等.煤层底板突水评价的新型实用方法Ⅱ———脆弱性指数法[J].煤炭学报,2007,32(11):1 121-1 126.
[6]武强,樊振丽,刘守强,等.基于GIS的信息融合型含水层富水性评价方法———富水性指数法[J].煤炭学报,2011,36(7):1 124-1 128.
[7]刘守强,武强,曾一凡,等.基于GIS的改进AHP型脆弱性指数法[J].地球科学-中国地质大学学报,2017,42(4):625-633.
[8]武强,刘守强,贾国凯.脆弱性指数法在煤层底板突水评价中的应用[J].中国煤炭,2010,36(6):15-19.
[9]刘文杰.“脆弱性指数法”对灵北煤矿2下煤层底板突水危险性评价[J].中国煤炭地质,2013,25(2):36-42.
[10]武强,王金华,刘东海,等.煤层底板突水评价的新型实用方法Ⅳ:基于GIS的AHP型脆弱性指数法应用[J].煤炭学报,2009,32(2):233-238.
[11]李博,郭小铭,徐爽,等.基于模糊评判-综合赋权的煤层底板突水危险性评价[J].河南理工大学学报(自然科学版),2014,33(1):6-11.
[12]传韬,赵庆民,张忠.底板突水的专家评分-层次分析预测与评价[J].采矿与安全工程学报,2001(4):22-25.
[13]曹茂林.层次分析法确定评价指标权重及Excel计算[J].江苏科技信息,2012(2):39-40.
[14]侯林旺,王剑.脆弱指标法在王庄煤矿下组煤底板突水危险性预测评价中的应用[J].煤,2012,21(9):22-23.
[15]赵海陆.华北型煤田岩溶水研究-邯郸黑龙洞泉域为例[D].邯郸:河北工程大学,2011.
[16]罗成. GIS的AHP型脆弱性指数法在李雅庄矿底板突水评价中的应用[J].煤田地质与勘探,2012(5):47-50.
[17]樊振丽,武强,孙晓宇.梧桐庄矿多含水层底板突水危险性评价[J].煤矿开采,2011,16(5):89-93.