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- W2387478533 abstract "Research purposes: In recent years,the magnetotelluric method has become one of the most common and effective ways for the geophysical exploration for the long and deep-buried railway tunnel.The magnetotelluric method uses the natural electromagnetic signal as the field source to observe the time serials of the natural electromagnetic signal and compute the value of resistivity and its impedance phase by transforming the observed data from time domain to frequency domain.After the Robust processing and 1-d inversion of the topography are conducted,the field data can actually reflect the underground geological information precisely. Research conclusions:In the research on the alignment of the Zhongtiaoshan Tunnel,the natural source audio frequency magnetotelluric was used for the geophysical exploration to find out the stratum condition and unfavorable geological structures in the survey area,achieving the expected survey target.During the exploration for the Zhongtiaoshan Tunnel,the 11 Class-I geophysical abnormalities,8 Class-II geophysical abnormalities and faults of F2、F3、F4 were deduced,and to them the more attention would be paid during construction.The magnetotelluric method has the featurs of simple out-door application,low cost and deep depth detecting due to using the natural MT signal as the field source.As the AMT uses higher band frequencies,it has higher resolution in the shallow areas.It is available for the engineering investigation,and the desirable results of the explorartion for the Zhongtiaoshan Tunnel was achieved." @default.
- W2387478533 created "2016-06-24" @default.
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- W2387478533 date "2013-01-01" @default.
- W2387478533 modified "2023-09-25" @default.
- W2387478533 title "Exploration of Structure Characteristics of Fault for Zhongtiaoshan Tunnel with Magnetotelluric Method" @default.
- W2387478533 hasPublicationYear "2013" @default.
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