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首页> 外文会议>International Symposium on Mine Safety Science and Engineering >Calculation and application on elastic-plastic coal pillar width of the stope
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Calculation and application on elastic-plastic coal pillar width of the stope

机译：弹性塑料煤支柱宽度的计算与应用

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Based on the SMP failure criterion which takes into consideration the influence of middle principal stress of clayey stuff, considering stress conditions on gob and roadway, the formula of the coal pillar width is inferred. In the meantime, the plastic-zone width of the coal pillar in plane strain is inferred by use of the limit equilibrium method. Compared with result obtained by Mohr-Coulomb failure criterion by changing the coal internal friction angle and cohesion, it shows that the traditional approach failed to make fully consideration of ultimate strength of the coal, and coal pillar size was designed conservatively. The calculation on coal pillar width based on SMP failure criterion is not only effective, but it will also take an important significance in the secure and efficient production of the coal mine.
机译：根据SMP故障标准，考虑到粘土材料中间主应力的影响，考虑到凝固沟槽和道路上的应力条件，推断煤柱宽度的公式。同时，通过使用极限平衡法推断出平面菌株中煤柱的塑料区宽度。与Mohr-Coulomb失败标准通过改变煤内摩擦角和凝聚率获得的结果相比，它表明，传统方法未能充分考虑煤炭的极限强度，煤柱规模保守设计。基于SMP故障标准的煤柱宽度的计算不仅有效，而且还将在煤矿的安全有效生产方面对其进行重要意义。

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