并行电法矿井水害探测技术研究与应用

Research and application of mine electrical disaster detection technology based on parallel electric method

矿井直流电法通过获取巷道附近岩层地电信息来推断巷道掘进过程中的含(导)水构造,长期以来在矿井水害预测中发挥着重要作用。由于巷道空间有限,传统电法勘探采集数据信息有限且工作效率较低。因此,引入并行电法采集系统,以拟地震排列ABM装置进行数据采集,并针对不同的矿井水害类型,在物理模型实验中设计线型及U型观测系统,分别对底板及掘进前方埋设的异常体进行定位分析。反演结果表明,并行电法不但能够完成传统电法的各种探测方式,而且可实现电阻率的快速测量,获得更可靠的地电信息。将上述研究成果应用于实际矿井水害探测,客观地解释了工作面底板富水区域位置以及掘进前方的断层导水构造,为矿井水害防治工程提供了重要信息。

The mine DC electrical methods infers the structure of (lead) water in the process of roadway excavation by obtaining the electrical information of rock strata near the roadway, which has played an important role in mine water disaster prediction for long time. Due to the limited space in the tunnel, traditional electrical prospecting data collection is limited and the work efficiency is low. This paper introduces the parallel electrical method acquisition system to arrange ABM devices for quasi-seismic data collection. According to the different types of mine water damage, the linear and u-shaped observation system was designed in the physical model experiment, and the location analysis of the anomalous bodies buried in the bottom plate and the tunneling front was carried out respectively. The inversion results show that the parallel electrical method not only can complete all kinds of detection methods of traditional electrical methods, but also can realize rapid measurement of resistivity and obtain more reliable geoelectrical information. The above research results are applied to the actual mine water hazard detection, and this objectively explained the location of the water-rich area in the working face and the fault-conducted structure in front of the excavation, which provided important information for the mine water disaster prevention and control project.