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Advanced forecast of coal seam thickness variation by integrated geophysical method in the laneway

机译：巷道综合地球物理方法的高级预测

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Coal seam thickness variation has a direct relationship with coal mine design and mining, and the mutation locations of the thickness are generally the gas accumulation area. In order to justify the feasibility and validity of advanced forecast about the thickness change, we carried out geophysical numerical simulation. Utilizing generalized Radon transform migration, coal-rock interface can be identified with an error of less than 2%. By the calculation of 2.5D finite difference method, transient electric magnetic response characteristics of the thickness variation is conspicuous. In a coal mine the case study indicated that: the reflected wave energy anomaly offer interface information of the thickness change point; the apparent resistivity provide the physical index of the thick or thin coal seam area; synthesizing two kinds of information can predict the thickness variation tendency ahead of the driving face, which can ensure the safety of driving efficiency.
机译：煤层厚度变化与煤矿设计和采矿具有直接关系，厚度的突变位置通常是气体积聚区域。为了证明关于厚度变化的高级预测的可行性和有效性，我们进行了地球物理数值模拟。利用广义氡变换迁移，煤岩界面可以识别出误差小于2％。通过计算2.5D有限差分方法，瞬态电磁响应特性厚度变化显着。在煤矿中的案例研究表明：反射波能量异常提供厚度变化点的界面信息;表观电阻率为厚煤层区域的物理指数提供;合成两种信息可以预测驱动面前方的厚度变化趋势，这可以确保驱动效率的安全性。

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