三维地震及瞬变电磁综合勘探在煤田构造探测中的应用

Application of 3D seismic and transient electromagnetic comprehensive exploration in coalfield structure detection

断层、陷落柱、采空区及采空积水等构造普遍存在于煤田中,给矿井建设及煤炭开采带来很大的安全隐患。为了查明山西下合煤矿15号煤层的断层、陷落柱、采空区等构造及煤层上覆水的分布范围,给新增区的后续生产建设提供可靠依据,故对新增区特别进行三维地震及瞬变电磁综合勘探。该方法较单一的勘探手段可以提高解释成果的准确性,减少物探解释的多解性。通过充分地三维地震和瞬变电磁试验,选择合适的施工参数,将两者的成果进行仔细对比分析以提高解释成果的准确性。

The faults, collapse column, goaf and goaf hydrops are common in coalfields, which bring great safety risks to mine construction and coal mining.In order to find out the fault, collapse column, goaf and other structures of No.15 coal seam in Shanxi Xiahe Coal Mine and the distribution range of the coal seam overlying water, and provide a reliable basis for the subsequent production and construction of the new area, specially carried out three-dimensional seismic and transient electromagnetic comprehensive exploration for the new area.The more simple exploration method of this method can improve the accuracy of the interpretation results and reduce the multi-solution of geophysical interpretation.By fully performing three-dimensional seismic and transient electromagnetic tests, select suitable construction parameters, and carefully compare and analyze the results of the two to improve the accuracy of the interpretation results.