基于FAHP-GRA法的风积沙覆盖风化带潜水富水性评价  

Evaluation of Phreatic Water Abundance in Weathering Zone Covered by Eolian Sand Based on FAHP-GRA

作　　者：郭启琛 李文平[2] 郭太刚 GUO Qichen;LI Wenping;GUO Taigang(Xiqu Coal Mine,Xishan Coal Electricity Group Co.,Ltd.,Gujiao 030200,China;School of Resources and Earth Science, China University of Mining and Technology,Xuzhou 221000,China)

机构地区：[1]西山煤电集团有限责任公司西曲矿,山西古交030200 [2]中国矿业大学资源学院,江苏徐州221000

出　　处：《煤矿安全》2018年第12期35-40,共6页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2015CB251601)

摘　　要：我国西北地区煤炭资源总体埋藏浅,厚度较大,煤层顶板充水受到地表水、风积沙潜水、基岩风化带水等综合影响,目前对于这一相对复杂含水系统的富水性评价研究仍不足。为了对该地区富水性做出综合评价,以东胜煤田转龙湾煤矿为依托,结合该区域的特殊地质情况,选取第四系砂层覆盖厚度、岩心采取率、单位涌水量、渗透系数、风化带厚度、砂岩岩性系数、地表地形和地表岩性作为顶板第四系及基岩风化带含水层的富水性影响因素,通过FAHP的方法以ArcGIS为平台,结合GRA灰色关联度将本矿区富水性等级划分为:弱、中等、较强,并依据等级从客观方面确定了富水性划分的阈值。结果表明:FAHP-GRA法得出的矿区潜水含水层相对富水性较强区与实际探放水资料中水量较大的孔位基本吻合,验证了该模型评价矿区综合富水性的准确性。The coal resource of northwestern China is generally characterized by shallow depth and thicker seam. The coal seam roof has been affected by water from the surface, eolian sand, bedrock weathering zone, etc. Research of water abundance analysis on this relatively complicated aquifer system is not well enough by far. To make a synthetic evaluation for the water abundance of this area, this paper combined the particular geological situation with Ordos Zhuanlongwan Coal Mine and chose the thickness of Quaternary system sand layer, weathering zone above bedrock, coring rate, unit-inflow values and osmotic coefficient values,sandstone proportionality coefficient, landform distribution and lithology distribution as the affecting factors of Quaternary and bedrock weathering zone roof phreatic water abundance. With the calculation of Arc GIS, water abundance is evaluated through FAHP. The water abundance standard of mining area is divided with grey relational analysis into: weak, medium, relatively rich.And by this standard, the threshold value to divide water abundance is also confirmed objectively. Results showed that the relatively rich area of phreatic aquifer water abundance obtained by FAHP-GRA can mainly match with the drainage holes which have large water yield. And it verified the accuracy of this model in evaluating synthetical water abundance of coal mine.

关 键 词：潜水含水层 基岩风化带 影响因素 FAHP—GRA评价法 富水性分区 突水 

分 类 号：TD742.1[矿业工程—矿井通风与安全]