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Seismic Monitoring of the Fracture Zones of a Coal Seam

机译:煤层骨折区域的地震监测

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摘要

With increasing depth of coal mining observed increase in gas-bearing coal seams and their degree of outburst. It is known that foci of gasodynamic phenomena tend to be fractured zones of small-amplitude disturbances. Reliable determination of the location of these destructions in coal seams is an important task determining the safety of mining. We develop a seismic method of direct search of zones with open fractures in the coal seam and related centers storage of free methane, based on seismic monitoring and estimation of changing the stresses of the seam. The purpose of this monitoring is to find areas with a strong reaction to the geomechanical impacts due to, for example, moving the front clean-up operations. We are not interested in the structure of the stable part of the coal seam. Such an approach to mine seismic prospecting based on a combination of monitoring and active impact is formulated for the first time. We present numerical experiments for the model statement.
机译:随着煤矿深度的增加观察到燃气煤层的增加及其突出程度。众所周知,气体动力学现象的焦点往往是小幅度干扰的裂缝区域。可靠地确定煤层中这些破坏的位置是确定采矿安全的重要任务。我们基于改变接缝应力的地震监测和估计,开发出一种直接搜索带有开放性骨折的地震骨折和自由甲烷的储存。该监测的目的是寻找对由于例如移动前置清理操作而导致的地质力学冲击具有强烈反应的领域。我们对煤层稳定部分的结构不感兴趣。基于监测和主动撞击组合的挖掘地震勘探的这种方法是第一次配制。我们呈现了模型陈述的数值实验。

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