渝东南岩溶储水构造高密度电阻率法异常特征
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摘要
通过对75条高密度电阻率法勘探测线及57眼钻孔验证情况的总结分析,研究渝东南地区岩溶储水构造的高密度电法异常特征。渝东南岩溶储水构造划分为三类地质模型:浅表层岩溶带、溶洞及岩溶管道、构造裂隙。根据渝东南地区找水高密度电法成果统计总结出该地区常见的四类高密度电法异常形态:浅表层横向条带状低阻异常、UV型低阻异常、团状或囊状低阻异常、串珠状低阻异常,每一类异常对应1~3种岩溶储水构造地质模型。高密度电法是渝东南岩溶山区找水的首选物探方法,总结地区勘探经验及合理解译高密度异常后推荐孔位可以提高岩溶石山地区找水的成井率。
Through the summarization of 75 high density resistivity survey lines and 57 drill holes,the authors studied high density electrical prospecting anomaly of water-bearing structure in karst area of southeast Chongqing. Water- bearing structure in karst area of southeast Chongqing may be divided into three kinds of geological models: corrosion fissure,karst cave and karst conduit,and structural fissure. According to the statistical results of high density electrical prospecting anomaly in karst area of southeast Chongqing,the authors divided them into four groups: low resistance stripe in surface layer,UV type low-resistant anomaly,the paste or cystic low resistance anomaly,and the beaded low resistivity,with each kind of anomaly corresponding to the 1 ~ 3 type of water-bearing structure in geological model of the karst area. High density resistivity method is the preferred method for geophysical water exploration in karst areas of southeast Chongqing. The authors summed up the experience of regional exploration and revealed that reasonable interpretation of high density anomaly after the recommendation of drill hole in karst areas can avoid the problem of mudstone filling and increase the well completion ratio.
Through the summarization of 75 high density resistivity survey lines and 57 drill holes,the authors studied high density electrical prospecting anomaly of water-bearing structure in karst area of southeast Chongqing. Water- bearing structure in karst area of southeast Chongqing may be divided into three kinds of geological models: corrosion fissure,karst cave and karst conduit,and structural fissure. According to the statistical results of high density electrical prospecting anomaly in karst area of southeast Chongqing,the authors divided them into four groups: low resistance stripe in surface layer,UV type low-resistant anomaly,the paste or cystic low resistance anomaly,and the beaded low resistivity,with each kind of anomaly corresponding to the 1 ~ 3 type of water-bearing structure in geological model of the karst area. High density resistivity method is the preferred method for geophysical water exploration in karst areas of southeast Chongqing. The authors summed up the experience of regional exploration and revealed that reasonable interpretation of high density anomaly after the recommendation of drill hole in karst areas can avoid the problem of mudstone filling and increase the well completion ratio.
引文
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[16]施龙青,牛超,翟培合,等.三维高密度电法在顶板水探测中应用[J].地球物理学进展,2013,28(6):3276-3279.
[17]王玉洲,贾贵智,方浩亮.高密度电法三维解释在岩溶勘察中的应用[C]//第九届全国工程地质大会论文集.中国地质学会工程地质专业委员会,2012.
[18]杨兴沐,黄卓雄,葛为中,等.遥控电极阵列拓展高密度电阻率法勘探深度研究[J].物探与化探,2016,40(1):73-77.
[19]葛为中,吕玉增,丁云河.梯度电测深剖面法及其应用[J].物探与化探,2011,35(2):206-211.
[20]吕玉增,葛为中,彭苏萍.多极距中梯观测与反演研究[J].物探与化探,2013,37(1):92-97.
[2]胡伟.重庆市渝东南岩溶地区缺水现状及其对策分析[J].科学技术与工程,2012,12(15):260-261.
[3]蒲俊兵.重庆地区岩溶地下河发育与分布的基本特征[J].中国岩溶,2013,32(3):266-279.
[4]张宗祜.中国地下水资源(重庆卷)[M].北京:中国地图出版社,2005.
[5]李勋祥.高密度电法勘探在岩溶地区地下水勘查中的应用.贵州地质[J].贵州地质,2009,26(2):141-144.
[6]焦彦杰,吴文贤,杨剑,等.云南岩溶石山区物探找水方法与实例分析[J].中国地质,2011(3):770-778.
[7]李华,焦彦杰,吴文贤,等.西南岩溶地区找水的地球物理方法探讨[J].水文地质工程地质,2011(5):1-6.
[8]程光贵.高密度电法在渝东南地区找水勘察中的应用[J].地下水,2013(3):106-109.
[9]武毅,孙银行,李凤哲.西南岩溶地区不同含水介质地球物理勘查技术[J].中国岩溶,2011(3):278-284.
[10]郑智杰,甘伏平,曾洁.不同深度岩溶管道的高密度电阻率法反演特征[J].中国岩溶,2015(3):292-297.
[11]王宇,袁道先,杨世瑜.云南省岩溶水地球物理探测实践[J].中国岩溶,2007,26(2):155-162.
[12]蒋忠诚,王瑞江,裴建国,等.我国南方表层岩溶带及其对岩溶水的调蓄功能[J].中国岩溶,2001,20(2):106-110.
[13]李彬,庹先国,汪楷洋,等.高密度电法三电位电极系装置勘察适用性研究[J].煤田地质与勘探,2015(1):.
[14]熊华山,柏长卫,王赐鸿.高密度电阻率法中负电位差的产生原因及其可利用性[J].物探与化探,2016,01:83-87.
[15]肖宏跃,雷宛,雷行健.高密度电阻率法中几种装置实测效果比较[J].工程勘察,2007(9):65-69.
[16]施龙青,牛超,翟培合,等.三维高密度电法在顶板水探测中应用[J].地球物理学进展,2013,28(6):3276-3279.
[17]王玉洲,贾贵智,方浩亮.高密度电法三维解释在岩溶勘察中的应用[C]//第九届全国工程地质大会论文集.中国地质学会工程地质专业委员会,2012.
[18]杨兴沐,黄卓雄,葛为中,等.遥控电极阵列拓展高密度电阻率法勘探深度研究[J].物探与化探,2016,40(1):73-77.
[19]葛为中,吕玉增,丁云河.梯度电测深剖面法及其应用[J].物探与化探,2011,35(2):206-211.
[20]吕玉增,葛为中,彭苏萍.多极距中梯观测与反演研究[J].物探与化探,2013,37(1):92-97.