综合电法勘探技术在探测奥陶岩溶水中的应用  

Application of Integrated Electric Prospecting in Ordovician Karst Water Detection

作　　者：马瑞花[1] 蒋喜昆[1] 

机构地区：[1]中国煤炭地质总局水文物测队,河北邯郸056001

出　　处：《中国煤炭地质》2013年第5期55-58,共4页Coal Geology of China

摘　　要：山东省汶上县康驿镇矿区属典型的北方岩溶区,供水水源问题突出。区内岩溶地下水的补给以大气降水入渗和第四系垂向越流补给为主,其次为相邻岩溶裂隙水系统的侧向补给,其地下水的径流方向受断层控制。含水岩系O25、O24、O26段岩溶裂隙较发育,富水性较强。依据地下电性层的电阻率变化规律,首先采用瞬变电磁法的中心回线装置对岩溶发育区进行初步圈定,然后采用对称四极垂向电测深方法进行勘探,特别对在瞬变电磁工作所确定的重点找水异常区,布设精测剖面线。两种资料的综合应用,有效地提高了解释精度。通过30个钻孔的验证,表明在综合分析区域地质构造、水文地质条件、地层岩性的基础上,综合电法勘探技术可以准确的圈定奥陶系灰岩岩溶水的位置。。The Kangyizhen mine area, Wenshang County, Shandong Province is a typical North China karst region with conspicuous problems in water supply source. The recharge of karst groundwater in the area is mainly from atmospheric precipitation infiltration and Quaternary System vertical leakage recharge; secondly from neighboring karst fissure water system lateral recharge; the runoff direction is controlled by faults. Water members 025, 024 and 026 have rather developed karst fissures with strong water yield property. Based on strata resistivity variation pattern, firstly using transient electromagnetic method central loop initially circled out karst developed blocks, then using symmetric four-pole vertical sounding, especially in above mentioned TEM circled blocks laid out close spacing section lines. The integrated application of both kinds of information can promote interpretation accuracy effectively. Through verification by 30 boreholes, showing that based on comprehensively analyzed tectonics, hydrogeological condition and strata lithology, the integrated electric prospecting technology can delineate location of Ordovician limestone karst water accurately.

关 键 词：奥陶岩溶水 瞬变电磁 直流电测深 视电阻率 

分 类 号：P631.3[天文地球—地质矿产勘探]