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为了解决高矿化度顶板水的探测问题,提出一种在地面发射、煤矿井下巷道中接收的地巷联合瞬变电磁法。以宁夏某富含高矿化度地下水的矿井为研究对象,通过理论数值模拟总结感应二次场对顶板水的反映特征,证明地巷联合瞬变电磁法的理论可行性,根据理论结果对现场实测数据进行处理分析,推断顶板水的分布。巷道揭露情况与实测结果相符合。结果表明,地巷联合瞬变电磁法能准确反映顶板水相对工作面的位置和范围,不受低阻屏蔽的影响,适合对高矿化度顶板水进行探测。
In order to solve the problem of detection of water with high salinity, a joint ground-based transient electromagnetic method is proposed for launching and underground coal mine tunnels. Taking Ningxia as an example, a mine with high salinity of groundwater was studied. The theoretical characteristics of induced secondary field response to roof water were summarized by theoretical numerical simulation, and the theoretical feasibility of the combined ground-and-lane transient electromagnetic method was proved. According to the theoretical results, Measured data processing analysis, inferred the distribution of roof water. Roadway exposure and the measured results are consistent. The results show that the combination of road and tunnel transient electromagnetic method can accurately reflect the position and range of roof water relative to the working face, and is not affected by the low-resistance shielding, so it is suitable for detecting the water with high salinity.