瞬变电磁法探测超高水材料注浆治理采空区效果

发布时间：2018-05-03 11:32

本文选题：瞬变电磁法 + 超高水材料　；参考：《煤炭科学技术》2017年03期

【摘要】：为研究瞬变电磁法检测采空区超高水材料注浆治理效果的可行性,采用1D正演得到了采空区注浆前后的瞬变电磁响应数据,并对其进行了反演。结果表明:根据注浆前采空区充水性的不同,充水与不充水情况下注浆后二次场感应电压的最大增幅分别约为40%或100%,反演后相应的视电阻率至少降低20%。在华北某矿采空区超高水材料注浆治理效果检测中:证实了注浆前后视电阻率的变化特征与理论结果相符,以视电阻率降低20%为边界推断的有效注浆区域基本准确,证实该方法是可行有效的。
[Abstract]:In order to study the feasibility of transient electromagnetic method in detecting the grouting effect of ultra-high water materials in goaf, the transient electromagnetic response data before and after grouting in goaf are obtained by using 1D forward method, and the inversion is carried out. The results show that the maximum increment of secondary field induction voltage after grouting is about 40% or 100%, respectively, according to the difference of water charge in goaf before grouting, and the corresponding apparent resistivity decreases at least 20% after inversion. In the test of grouting effect of ultra-high water material in a mining goaf in North China, it is proved that the change characteristics of apparent resistivity before and after grouting are consistent with the theoretical results, and the effective grouting area inferred by 20% reduction of apparent resistivity is basically accurate. It is proved that this method is feasible and effective.
【作者单位】：煤炭科学技术研究院有限公司安全分院;煤炭资源高效开采与洁净利用国家重点实验室;北京市煤矿安全工程技术研究中心;
【基金】：国家自然科学基金资助项目(51404139)
【分类号】：TU478;P631.325

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