高寒冻土层下断层富水性的瞬变电磁立体探测研究

Study on Transient Electromagnetic Stereo Detection of Water-Rich Faults under Alpine Frozen Soil

为更可靠地评价胜利煤矿F13断层的富水性,针对矿区地下冻土层的地质与地球物理特点,提出浅层瞬变电磁探测方案。通过对测试工区的网格化测线布置,并利用全程视电阻率解析算法,实现了地下岩层视电阻率立体成像。结果表明,该方法较好地反映了F13断层的富水性分布特征,能为煤矿安全生产及防治水工作提供可靠的资料,值得在该区推广应用。

In order to evaluate the water-rich of fault F13 in Shengli Coal Mine more reliably, according to the geological and geophysical characteristics of underground permafrost, a shallow transient electromagnetic detection scheme was proposed. The three-dimensional imaging of apparent resistivity of underground rock strata wass realized by arranging the grid survey lines in the test area and using the full-range apparent resistivity analytic algorithm. The results showed that the method reflects the water-rich distribution characteristics of fault F13 well, and can provide reliable data for coal mine safety production and water control work, which is worthy of popularization and application in this area.