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为探测掘进前方隐伏的含水构造,预防地质水害,解决煤巷综掘过程中日益突出的“探、掘”矛盾,论文提出和研究电场约束法煤巷综掘探测方法.该方法利用电场同性相斥的原理,使发射电场被约束在一定范围内,达到定方向定距离探测的目的.根据该方法基本原理,建立超前探测有限元仿真模型,开展相应的数值模拟.论文主要从探测基本方法,激发极化程度、异常体的体积大小及巷道内金属体对于超前探测的影响展开模拟研究.结果表明,该方法可以有效探知掘进面前方的含水地质异常,其探测有效距离约为10m.该研究为电场约束法煤巷综掘超前探测方法的实现奠定了理论基础,对综掘超前探测技术的发展具有重要的推动作用.
In order to detect the concealed water-bearing structure in the front of the tunnel and prevent the geological water damage and solve the contradiction between “exploration and excavation” which is increasingly prominent in the process of coal tunneling comprehensive excavation, this paper presents and studies the coal tunnel comprehensive excavation exploration method with the electric field constraint method. The principle of same-sex repulsion, so that the emission electric field is constrained within a certain range, to achieve the purpose of detecting the distance from the fixed direction.According to the basic principle of this method, the establishment of advanced finite element simulation model and carry out the corresponding numerical simulation.The paper mainly from the basic exploration The results show that this method can effectively detect the water-bearing geological anomalies in front of the excavation face, and the effective detection distance is about 10m. The research lays a theoretical foundation for the realization of advanced detection method of fully mechanized Coal Roadway with the electric field confinement method and plays an important role in the advancement of advanced detection technology of fully mechanized excavation.