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StratagemTM EH4电磁成像系统具有自动采集电磁数据功能和先进的数据分析技术,是CSAMT和MT的结合体,是一种全新概念的张量式电导率测量系统。具有不受高阻屏蔽、受地形影响小、性能良好、轻便快捷和施工成本低等特点。根据在云南武昆高速路某隧道所得的资料,归纳总结其在隧道地质勘查中的应用。利用EH4电磁成像系统所得数据绘制电阻率深度剖面图,可以有效识别下切地层结构及断层、破碎带、隐伏岩溶发育区、富水区、暗河等构造或不良地质体。本文的资料解释结果为隧道施工提出宏观的预报,为划分隧道围岩级别提供依据,为下步设计、施工提供依据,更为长大埋深隧道展示了一种全新的勘探手段。
StratagemTM EH4 electromagnetic imaging system with automatic acquisition of electromagnetic data and advanced data analysis technology, is a combination of CSAMT and MT, is a new concept of tensor conductivity measurement system. With high-impedance shielding, affected by the terrain is small, good performance, light and quick and low construction costs and so on. According to the data obtained from a tunnel in Yunnan Wu-Kun Highway, the application of tunneling in tunnel geological prospecting is summarized. Using the data obtained from the EH4 electromagnetic imaging system to draw the depth profile of resistivity, the structures and faults of undercut structure, faults, crustal zones, hidden karst development zones, water-rich areas, underground rivers and other adverse geological bodies can be effectively identified. The results of this paper provide macroscopic forecast for tunnel construction, provide a basis for dividing the surrounding rock level of tunnel, and provide a basis for the next step of design and construction. A more burial depth tunnel shows a new exploration means.