采场底板破坏特征数值模拟
Numerical Simulation on Failure Characteristics of Mining Coal Seam Floor
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摘要: 在总结我国煤矿底板破坏深度经验公式的基础上,运用综合考虑煤层埋深、倾角、煤层厚度、工作面长度、底板的损伤破坏程度及地质构造等多因素的修正经验公式,以某矿井工作面开采实际情况为背景,采用UDEC数值模拟对煤层底板采动特征进行分析,揭示煤层开采过程中底板的破坏特征及破坏深度,对比验证底板破坏深度经验公式的准确性。Abstract: On the basis of summarizing empirical formula of coal floor failure depth in our country, comprehensive consideration and utilization of seam depth, dip, seam thickness, face length, floor damage and the extent of damage and other factors, taking the actual mining of a mine face as the background, we analyze coal floor mining characteristics by UDEC numerical simulation, which reveals failure characteristics and failure depth of floor seam mining process, and comparatively verifies the accuracy of floor failure depth empirical formula.
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Keywords:
- failure characteristic /
- empirical formula /
- failure depth /
- crack evolution /
- numerical simulation
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