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FINITE ELEMENT ASSESSMENT OF THE INFLUENCE OF CAVING ON BARRIER PILLAR LOADS IN DEEP COAL MINES

机译：有限元评价对深煤矿屏障柱荷载作用影响的有限元评价

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A simple finite element model of caving associated with deep longwall coal mining and barrier pillars considers caving as a natural cut and fill process. Intact roof elements that reach the elastic limit fail by turning into a rubble or "fill" that has greatly reduced elastic moduli and strengths.

机译：与深层长壁煤开采相关的洞穴简单有限元模型，屏障柱子认为洞穴作为自然切割和填充过程。通过变成瓦砾或“填充”，完整的屋顶元件通过变成具有大大降低的弹性模和强度而导致的瓦砾或“填充”失效。

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《SME annual meeting exhibit》|2009年||共8页
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W. G. Pariseau;
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中图分类地质、矿业;
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FINITE ELEMENT ASSESSMENT OF THE INFLUENCE OF CAVING ON BARRIER PILLAR LOADS IN DEEP COAL MINES

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