Karst cave prospecting using cross-hole ultra-high density resistivity method
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摘要: 利用井间超高密度电阻率法对广州地铁某在建段浅层隐伏岩溶发育情况进行了探测实验。结果表明:利用现有勘察孔进行井间超高密度电阻率法探测溶洞是可行的,通过正反演计算获得的井间电阻率分布特征能直观给出溶洞在横向、纵向上的分布范围,但是对溶洞连通性不易区分,深度偏差为电极距大小。探测时,电法孔孔深一致,孔深和孔间距比大于1.5倍,电极间距1~2 m。Abstract: The prospecting of shallowly concealed karst caves is studied using the cross-hole ultra-high density resistivity method. The results are as follows. It was feasible to prospect Karst caves using existing survey boreholes according to the cross-hole ultra-high density resistivity method. The transverse and longitudinal distribution ranges of karst caves can be directed reflected by the distribution characteristics of the cross-hole resistivity obtained through forward and inverse calculations. Meanwhile, it was difficult to distinguish the connectivity between karst caves, and the depth deviation was the distance between two adjacent electrodes. It is suggested that the depth of the boreholes used should be consistent, the ratio of the borehole depth to the borehole space should be higher than 1.5, and the electrode space should be 1~2 m in practice.
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[1] 郭贵安, 魏柏林. 井间电磁波CT技术在溶洞探测中的应用[J]. 华南地震, 1999, 4(19):28-34.
[2] Guo G A, Wei B L. Prospecting corroded cavities using cross-section electromagnetic tomographic technique between boreholes[J]. South China Journal of Seismology, 1999, 4(19):28-34.
[3] 严加永, 孟贵祥, 吕庆田, 等. 高密度电法的时展与展望[J]. 物探与化探, 2012, 36(4):576-584.
[4] Yan J Y, Meng G X, Lyu Q T, et al. The progress and prospect of the electrical resistivity imaging survey[J]. Geophysical and Geochemical Exploration, 2012, 36(4):576-584.
[5] 刘宏岳. 直流高密度电法在浅海工程勘察中的应用[J]. 物探与化探, 2013, 37(4):756-760.
[6] Liu H Y. The application of DC resistivity to shallow marine engineering exploration[J]. Geophysical and Geochemical Exploration, 2013, 37(4):756-760.
[7] 蔡运胜. 高密度电法探测地下牡蛎礁(滩)的实验[J]. 物探与化探, 2009, 33(6):635-637.
[8] Cai Y S. The experimental application of the high density electric method to the detection of underground oyster bioherm[J]. Geophysical ang Geochemical Exploration, 2009, 33(6):635-637.
[9] 孟娟, 颜庭成, 陈晓飞, 等. 双线隧道盾构机侧穿时古石塔地基及塔身变形规律研究[J]. 河南科学, 2020, 38(4):626-631.
[10] Meng J, Yan T C, Chen X F, et al. Deformation of the foundation and tower body of ancient tower when double-line shield tunneling beside the tower[J]. Henan Science, 2020, 38(4):626-631.
[11] 吕根根, 张晓平, 刘泉声, 等. TBM掘进速度预测模型研究[J]. 河南科学, 2019, 37(8):1289-1295.
[12] Lyu G G, Zhang X P, Liu Q S, et al. Prediction models of the TBM penetration rate[J]. Henan Science, 2019, 37(8):1289-1295.
[13] 张兵. 基于改进信息熵值分析的TBM掘进参数研究[J]. 河南科学, 2019, 37(5):785-791.
[14] Zhang B. TBM driving parameters based on improved information entropy analysis[J]. Henan Science, 2019, 37(5):785-791.
[15] 李俊杰, 何建设, 严家斌, 等. 超高密度电阻率在隐伏断层探测中的应用[J]. 物探与化探, 2016, 40(3):624-628.
[16] Li J J, He J S, Yan J B, et al. The application of ultra-density resistivity method to detection of buried fault[J]. Geophysical and Geochemical Exploration, 2016, 40(3):624-628.
[17] 李红立, 张华, 汪传斌. 跨孔超高密度电阻率法在花岗岩球状风化体勘探中的试验研究[J]. 工程勘察, 2010, 38(8):88-92.
[18] Li H L, Zhang H, Wang C B. Experimental study on the cross-hole ultra-density resistivity method used in the exploration for the spheric lightly-weathered granite[J]. Geotechnical Investigation & Surveying, 2010, 38(8):88-92.
[19] 刘申芬, 李天成, 慕洪涛. 三维井地电阻率有限元数值模拟及反演[J]. 物探与化探, 2009, 33(1):88-90.
[20] Liu S F, Li T C, Mu H T. The numerical modeling and inversion of 3D borehole-surface resistivity finite element[J]. Geophysical & Geochemical Exploration, 2009, 33(1):88-90.
[21] 王志刚, 何展翔, 刘昱. 井地直流电法三维数值模拟及异常规律研究[J]. 工程地球物理学报, 2006, 3(2):87-92.
[22] Wang Z G, He Z X, Liu Y. Research of three-dimensional modeling and anomalous rule on borehole-ground DC method[J]. Chinese Journal of Engineering Geophysics, 2006, 3(2):87-92.
[23] 余鹏洲, 张志勇, 黄临平, 等. 带井观测高密度电阻率法2.5维非结构化网格反演[J]. 地球物理学进展, 2019, 34(4):1687-1693.
[24] Yu P Z, Zhang Z Y, Huang L P, et al. 2.5D inversion of borehole and surface multi-electrode DC data using unstructured mesh[J]. Progress in Geophysics, 2019, 34(4):1687-1693.
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