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| APPLICATION OF SAMPLING FREQUENCY AND PHASE PARAMETEROF CONTROLLED-SOURCE AUDIOMAGNETOTELLURICS |
| LIU Ming1, WANG Dong-hua2, LI Bo1 |
1. Kunming University of Science and Technology, Yunnan Kunming 650093, China;
2. Shanxi Hydrographic and Water Resources Survey Bureau, Shanxi Taiyuan 030001, China |
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Abstract In the survey of goaf of coal mine, electromagnetic exploration tends to appear superficial blind area. According to the principle of electromagnetic wave propagation and Bostick depth relation, calculate the exploration depth of different strata, at the same time introduce the application effect of the phase parameters in surveying fracture structure. Application results show that selecting reasonablely frequency of data acquisition, can overcome shallow blind area. And apply, including phase parameters, the multi parameter to analysis worked-out position, the effect is obvious.
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Received: 20 September 2012
Published: 10 November 2012
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