您要查找的是不是：
- Probe into Coal Pillar under Channel in Mais Bulak Coalmine, Bay County, Xinjiang 新疆拜城县梅斯布拉克煤矿河床煤柱预留问题探讨
- coal pillar under channel 河床煤柱
- Test of coal mining with sand proof coal pillar under gravel aquifer 砂砾石含水层下留设防砂煤柱的开采试验
- Study on influence of excavation sequence on the stability of coal pillar under final highwall with auger mining 到界边坡下螺旋钻机开采顺序对煤柱稳定性的影响研究
- coal pillar under buildings 建下煤柱
- The Mining Deformation of Roadways and Failure Evolvement of Small Coal Pillar under Different Widths of Chain Pillars 大小护巷煤柱巷道采动变形与小煤柱破坏演化规律
- Secondly, simulation elicits wall rock transmogrification under the different coal pillar and different stress. 其次模拟研究分析了留设煤柱宽度不同时以及地应力大小不一时沿空巷道围岩变形情况，得到了一些认识；
- Through test for beam &pillar under the condition of the abnormal heat, we propound a strengthening project. 对梁、柱受非正常高温后通过检刚，有针对性地提出加固方案。
- Highlighting the key areas to be covered under channel management strategy. 介绍营销渠道管理策略涵盖的关键领域。
- UDEC simulation of the water-pouring probability in exploiting waterproof coal pillars under the conditions of thick loose bed and ultrathin overlying strata UDEC模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性
- The coal pillar has mode-soft behaviour, so it is possible to estimate the destabilization. 煤柱失稳还具有模态软化特性，可以对失稳的可能性进行佑计。
- The roof rock was assumed in the elastic state,established the mechanical model of coal pillar and roof system. 假设顶板岩层处于弹性工作状态情况下,建立了煤柱-顶板系统的力学模型。
- John Ma highlighting the key areas to be covered under channel management strategy. 马世豪著重介绍营销渠道管理策略涵盖的关键领域。
- The received signal model of polarization sensitive array is established, under channel mismatching condition. 摘要在极化敏感阵列通道失配条件下，建立了极化敏感阵列接收信号误差模型。
- The results indicate that the width of coal pillar has a great influence on the stress distribution of the gob-side entry. 研究表明：留设煤柱的宽度对孤岛面沿空巷道的应力分布有较大影响；
- In the plastic limit analysis,the wrinkler's plate is smartly analyzed in yield-line theory to get the critical compression strength of the coal pillar. 在分析过程中,利用机动法对温克尔地基板(弹簧支撑板)进行了塑性极限分析,得出了煤柱抗压强度的临界值。
- The results show that the coal pillar destabilization has catastrophe and gradualness paths, which correspondingly cause the violent destroy and the gradualness "weak" destroy. 结果表明：煤柱失稳具有突变、缓慢2条路径，相应地形成了煤柱失稳的突然猛烈破坏和较缓慢的“瘫软”破坏；
- When the destabilization of the coal pillar occurred, it needs much more strength of coal pillar to restore to the steady state than that when destroying. 煤柱一旦失稳，如要使其恢复到稳定状态，需要的煤柱强度要比煤柱破坏时的强度大的多；
- The formula of necessary and sufficient condition for instability and failure of strip coal pillar along strike is obtained according to the cusp catastrophi... 并根据模型对走向条带煤柱破坏失稳的机理进行了分析。为条带开采煤柱的稳定性及破坏失稳研究提供了新的理论方法。
- Also a comparison of the plastic status of the coal pillar is made respectively considering uncoupled and coupled situations, and the deformation and failure laws are researched. 结果表明：两种情况下的塑性区均呈现“马鞍”形状，这与以往的大量实测结果相一致。
