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在总结内蒙浅埋煤层采空区地球物理特征的基础上,分析了常用物探方法在探测浅埋煤层采空区方面的优势、局限性和不同物探方法对采空区所可能得到的异常反应特征等问题。同时在高分辨率和高准确度的勘查要求下,对瞬变电磁法、高密度电阻率法和二维地震的观测系统进行了设计和实验,对物探资料进行了处理和综合解释。结合具体工程实践最终取得了良好探测效果,证明了在浅埋煤层采空区勘查中采用综合地球物理勘查技术的有效性和优势。
On the basis of summarizing the geophysical characteristics of mined-out area in shallow coal seam in Inner Mongolia, the advantages and limitations of common geophysical methods in detecting goaf of shallow coal seam are analyzed, and the possible abnormal response characteristics of different geophysical methods to mined-out area And other issues. At the same time, with the request of high-resolution and high-accuracy prospecting, the design and experiment of transient electromagnetic method, high-density resistivity method and two-dimensional seismic observation system were designed and processed, and the geophysical data were processed and comprehensively explained. In the end, a good detection result has been achieved with the practice of concrete engineering, which proves the effectiveness and advantages of using integrated geophysical exploration technology in the exploration of goafs in shallow coal seams.