Abstract：The forward and the inverse numerical simulations on the computed tomography of cross-hole resistivity was carried out based on the finite element and the least squares methods for the better geological prediction in urban subway engineering to avoid the potential geological disasters and ensure the construction safety. Three geoelectric models describing the water-filled karst cave，the water-filled fault and the bedrock surface were established respectively. The models were used to analyze the response characteristics and the behaviour and to verify the feasibility of the computed tomography of cross-hole resistivity. Meanwhile，it was pointed out that the computed tomography of cross-hole resistivity could be applied to the other type of cases in the urban subway geological prediction. Three types of layouts of the surveying lines and a 3D slice method of interpretation were presented to resolve the complexity of geological environment of the urban subway. Further case studies showed that the computed tomography of cross-hole resistivity had a high precision of detection and was flexible in implementation and did not interfere with the tunnel excavation.
李术才，李树忱，张庆松，等. 岩溶裂隙水与不良地质情况超前预报研究[J]. 岩石力学与工程学报，2007，26(2)：217-225.(LI Shucai，LI Shuchen，ZHANG Qingsong，et al. Forecast of karst fractured groundwater and defective geological conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(2)：217-225.(in Chinese))
[2]
李术才，薛翊国，张庆松，等. 高风险岩溶地区隧道施工地质灾害综合预报预警关键技术研究[J]. 岩石力学与工程学报，2008，27(7)： 1 297-1 307.(LI Shucai，XUE Yiguo，ZHANG Qingsong，et al. Key technology study on comprehensive prediction andearly-warning of geological hazards during tunnel construction in high-risk karst areas[J]. Chinese Journal of Rock Mechanics and Engineering， 2008，27(7)：1 297-1 307.(in Chinese))
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2014, Vol. 33 
