一种描述房柱式煤矿煤柱粘弹性变形的解析解

Li Qiang , Xu Hui , Bu Wankui , Zhao Guozhen
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引用次数: 10

摘要

煤柱变形是典型的非线性和时变变形。这种变形的准确预测对采矿技术的成功实施具有至关重要的意义。这些方法作为一种从建筑物、铁路或水体下开采煤炭资源的方法已被证明是非常重要的。采用弹性理论和粘弹性理论,结合Maxwell模型,建立了硐室和煤柱位移的解析解。结果表明,粘弹性解能较好地预测煤柱随时间的变形。结果表明,粘弹性解可以根据实测的现场地质参数预测煤柱和巷道的位移。该方法可用于矿井设计、煤柱支护优化、地面沉降预测和煤柱稳定性分析。
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An analytic solution describing the visco-elastic deformation of coal pillars in room and pillar mine

Coal pillar deformation is typically nonlinear and time-dependent. The accurate prediction of this deformation has a vital importance for the successful implementation of mining techniques. These methods have proven very important as a way to excavate coal resources from under buildings, railways, or water bodies. Elastic and visco-elastic theory are employed with a Maxwell model to formulate an analytic solution for displacement of coal pillars in room and pillar mine. These results show that the visco-elastic solution adequately predicts the coal pillar deformation over time. We conclude that the visco-elastic solution can predict the coal pillar and roadway displacement from the measured geological parameters of the conditions in situ. Furthermore, this method would be useful for mine design, coal pillar support optimization, ground subsidence prediction, and coal pillar stability analysis.

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