CAJ | 학술논문

针对高密度电法在探测煤矿不积水采空区对地形有严格要求的实际情况下，在煤田地表条件较为复杂的地区，采用受地形影响较小的瞬变电磁法反映地下不积水采空区的电性特征的研究与应用就有了重要的实际意义。为此首先从瞬变电磁法的基本原理出发，介绍瞬变电磁法的基本公式和正演方法；其次，结合不积水采空区的地球物理特征，设计正演模型，根据计算结果提出在地形条件复杂，不适合高密度电法施工的地方，采用小线框、配合高发射频率和大发射电流的瞬变电磁方法，探测地下高阻目标体的电性特征，推断不积水采空区的分布；最后，结合实际工程进行瞬变电磁法探测煤矿不积水采空区的实践，得到结论与实际钻探结果相符。应用效果表明，瞬变电磁法在一定程度上能够完成煤矿不积水采空区的探测，对煤矿安全生产起到了的参考作用。
침대고밀도전법재탐측매광불적수채공구대지형유엄격요구적실제정황하，재매전지표조건교위복잡적지구，채용수지형영향교소적순변전자법반영지하불적수채공구적전성특정적연구여응용취유료중요적실제의의。위차수선종순변전자법적기본원리출발，개소순변전자법적기본공식화정연방법；기차，결합불적수채공구적지구물리특정，설계정연모형，근거계산결과제출재지형조건복잡，불괄합고밀도전법시공적지방，채용소선광、배합고발사빈솔화대발사전류적순변전자방법，탐측지하고조목표체적전성특정，추단불적수채공구적분포；최후，결합실제공정진행순변전자법탐측매광불적수채공구적실천，득도결론여실제찬탐결과상부。응용효과표명，순변전자법재일정정도상능구완성매광불적수채공구적탐측，대매광안전생산기도료적삼고작용。
In view of the fact that while detect the coal mine goaf without water, high density direct current resistivity method has strict requirements for the terrain, for the coal area that surface condition is relatively complex and terrain undulating is large, the research and application of the TEM use special parameters which reflect the electrical characteristics of coal mine goaf without water have practical significance. Thus, starting from the basic principle of transient electromagnetic method, this paper introduces the basic formula of the transient electromagnetic method and modeling method at first. Then combining with the geophysical characteristics of the goaf without water, we designed the forward model. And then based on the results of calculation, we presented that in the area with complex terrain conditions and are not suitable for the construction the high density resistivity method, we can adopt the transient electromagnetic method, which with flyer frame, high firing frequency and large emission current, to detect the electrical characteristics of high resistance target of underground, so that we can inference the distribution of the goaf without water. Finally, combined with practical engineering to practice the transient electromagnetic method for detecting the coal mine goaf without water, and the conclusion is consistent with actual drilling results. The results of application show that the transient electromagnetic method can finish the detection for the coal mine goaf without water in a certain degree, and it plays a reference role for coal mine safety.