基于层次分析法的富水区预测及其在顶板突水危险性评价中的作用
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摘要
为评估大南湖七号煤矿7煤开采时可能出现的顶板突水威胁,基于研究区的钻孔数据等地质资料,采用多元地学信息复合叠加思路结合层次分析方法划定7煤顶板含水层的富水性分区,并进一步依据富水性分区成果,采用"三图法"进行7煤顶板突水危险性评价。分析认为,研究区7煤顶板含水层富水性影响因素主要有含水层的厚度、渗透系数、单位涌水量、脆塑性比值等;综合因素层次分析富水性预测显示,7煤顶板含水层在研究区北部和西北部属富水性相对好和相对较好区,东部和东南部富水性相对弱和相对较弱,中部富水性相对中等。顶板突水危险性分区评价结果表明,7煤顶板突水危险性较高,尤以北部地区较为突出,开采时应重点防治。
To evaluate the threat of roof water inrush during the 7th coal mining in Dananhu No. 7 coal mine, based on the drilling data and other geological data in the study area, a multi-geographical information superposition approach was combined with an analytic hierarchy process to delineate the aquifer of the 7~# coal roof. Water-based zoning, and further based on the results of the water-rich zoning, the "three-map method"was used to evaluate the water inrush risk of the 7th coal roof.According to the analysis, the factors affecting the water-richness of the coal aquifer in the study area are mainly the aquifer thickness, permeability coefficient, unit water inflow, brittle-plastic ratio and others; the comprehensive factor analytic hierarchy process water-richness prediction shows that the 7~# coal roof aquifer is in the study area. The northern and northwestern regions are relatively well-watered and relatively well-watered areas, while the eastern and southeastern regions are relatively weak and relatively weak in water richness, and the middle water richness is relatively moderate. The evaluation result of the water inrush danger zone of the roof shows that the 7~# coal roof water inrush risk is relatively high, especially in the northern part, and the key prevention and control should be taken during mining.
To evaluate the threat of roof water inrush during the 7th coal mining in Dananhu No. 7 coal mine, based on the drilling data and other geological data in the study area, a multi-geographical information superposition approach was combined with an analytic hierarchy process to delineate the aquifer of the 7~# coal roof. Water-based zoning, and further based on the results of the water-rich zoning, the "three-map method"was used to evaluate the water inrush risk of the 7th coal roof.According to the analysis, the factors affecting the water-richness of the coal aquifer in the study area are mainly the aquifer thickness, permeability coefficient, unit water inflow, brittle-plastic ratio and others; the comprehensive factor analytic hierarchy process water-richness prediction shows that the 7~# coal roof aquifer is in the study area. The northern and northwestern regions are relatively well-watered and relatively well-watered areas, while the eastern and southeastern regions are relatively weak and relatively weak in water richness, and the middle water richness is relatively moderate. The evaluation result of the water inrush danger zone of the roof shows that the 7~# coal roof water inrush risk is relatively high, especially in the northern part, and the key prevention and control should be taken during mining.
引文
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[2]武强,崔芳鹏,赵苏启,等.矿井水害类型划分及主要特征分析[J].煤炭学报,2013,38(4):561-565.
[3]杨雅辉.矿井顶板涌(突)水危险性预测研究与系统实现[D].西安:西安科技大学,2014.
[4]虎维岳,田干.我国煤矿水害类型及其防治对策[J].煤炭科学技术,2010,38(1):92-96.
[5]刘光庆,于旭磊,李凤海,等.矿井顶板水害预测与防治专家系统[J].中国地质灾害与防治学报,2001,12(1):71-74.
[6]中国生,江文武,徐国元.底板突水的突变理论预测[J].辽宁工程技术大学学报,2007,26(2):216-218.
[7]施龙青,辛恒奇,翟培合,等.大采深条件下导水裂隙带高度计算研究[J].中国矿业大学学报,2012,41(1):37-41.
[8]张忠温,武强,付恩俊,等.平朔井工开采煤层顶底板水文地质条件评价及防治水对策研究[J].中国工程科学,2011,13(11):94-101.
[9]李新旺,杨社,李丽,等.基于GIS与AHP耦合的大海则矿超长主斜井富水性研究[J].煤炭技术,2015,34(6):141-143.
[10]董东林,刘金国.林南仓矿12#煤顶板突水危险性评价研究[J].煤炭工程,2016(S1):5-8.
[11]穆金霞.常村煤矿煤层顶板涌(突)水危险性分区预测研究[J].煤炭科技,2015(4):1-4.
[12]武强,徐华,赵颖旺,等.基于“三图法”煤层顶板突水动态可视化预测[J].煤炭学报,2016,41(12):2968.
[13]武强,许珂,张维.再论煤层顶板涌(突)水危险性预测评价的“三图-双预测法”[J].煤炭学报,2016,41(6):1341-1347.
[14]滕永海.综放开采导水裂缝带的发育特征与最大高度计算[J].煤炭科学技术,2011,39(4):118-120.