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中文摘要：
针对在城市修建地铁时可能遇到的一种严重危害工程安全的地质灾害体---溶洞，建立了4种典型溶洞模型，使用有限元法和迭代法进行正反演数值模拟，得到井间电阻率成像方法对典型溶洞的探测响应特征，分析总结不同模型响应特点，辅以大连地铁工程实例验证实际探测中的良好应用效果。研究结果表明，井间电阻率成像方法是城市地铁溶洞探测的一种有效的方法，可为城市地铁施工提供相应的安全保证，基于数值模拟和工程实践对在城市地铁使用井间电阻率成像方法进行溶洞探测提出现场工作和数值处理建议。
英文摘要：
Karst caves were serious potential threats to the construction of subway.Four kinds of karst caves models were built and the numerical simulation were put forth by using the finite element and iteration method.The typical response characteristics were obtained to cross-hole resistivity tomography method of the models, and the response features were analyzed and summarized.Project cases in Dalian subway verified its favourable application effect in practice.Research results proved that cross-hole resistivity tomography method was an effective technology to karst cave detection and could help to ensure the safety of subway construction.Finally, based on numerical simulation and project cases, a few recommendations were given both in working method and data processing when using cross-hole resistivity tomography method to detect karst caves.
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