Research on wave-field transformation and data processing of the mine transient electromagnetic method
Research on wave-field transformation and data processing of the mine transient electromagnetic method
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发表时间：
2013
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通讯作者：
Cheng Jiu-lon
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作者：
Cheng Jiu-lon
矿井瞬变电磁法电界面探测精度直接影响地质调查结果。首先论述了瞬变电磁场变换理论，提出了矿井瞬变电磁场变换算法，结合实测数据计算了波场，然后建立了波场数据处理和成像方法，实现了矿井瞬变电磁剖面向伪地震剖面的转换和电界面的精确探测。最后，通过对煤层顶板含水的实际勘探，验证了波场变换和数据处理的实用性和有效性。结论表明，波场变换和伪地震成像及数据处理可以提取矿井瞬变电磁法的电界面信息，弥补矿井瞬变电磁法在准确探测电界面方面的不足，突出弱异常，提高分辨率，提高勘探精度。
The detection accuracy of electrical interface by mine transient electromagnetic method(MTEM) affects the geological surveying results.Authors first discussed the theory of transient electromagnetic field transforming,proposed the algorithm of mine transient electromagnetic field transforming and calculated wave filed with actual surveying data,and then created the method of wave-field data processing and imaging,realized the transformation from mine transient electromagnetic section into pseudo-seismic section and accurate detection of the electrical interface.At last,the practicability and effective of the wave-field transforming and data processing were proved by the actual exploration on the water-containing of coal roof.The conclusion show that the wave-field transforming and pseudo-seismic imaging and data processing can extract the electrical interface information of MTEM and supplement the deficiencies of the MTEM on detecting accurately the electrical interface,highlight the weak anomalies and improve the resolution and increase exploration accuracy.