煤巷掘进含水地质构造探测仿真及参数分析

Simulation on Water Bearing Geological Structure Detection of Mine Seam Gateway Driving and Analysis on Parameters

为了研究激电法在煤巷掘进面的超前探测技术及其可行性,首先分析了煤巷掘进面前方隐伏的有害含水地质构造特征,建立了含水地质构造的简化物理模型,并将其转化为便于研究的等效电路,进而构建了含水地质构造的激电模型;然后,将激电模型接入地质异常体仿真探测模型中,得出在激电模式下含水地质构造的视电阻率ρs和PFE值的变化曲线。从所得曲线中可以看出:仿真探测结果参数与激电模型预设的电性参数基本一致,从而印证了电法探测的基本思想,并为开发以煤(岩)激发极化效应为基础的电法超前探测仪器提供了可行性前提。

In order to study on the advanced detection technology and feasibility of the induce polarization method applied to the seam gateway driving face, a simplified physical model of the water bearing geological structure was established, was converted favorable for the study on an equivalent circuit and then an induce polarization model of the water bearing geological structure was established. Then the induce polarization model was connected with the simulation detection model of geological abnormal mass and the variation curves of the apparent resistivity and value of the water bearing geological structure under the induce polarization mode were obtained. The curves obtained showed that the parameters of simulation detection results and the electrical parameters pre -set by the induce polarization model would be the same basically. Therefore the basic idea of the electric method detection was verified and the feasibility presupposition could be provided for the development of the coal （rock） excited polarization effect base on the advanced detection instruments with the electric method.