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- Based on the analyzing of parameter about combinatorial key stratum, the formulae of calculating the roof weighting step is given in this article. 在分析组合关键层有关参数的基础上,推导出了组合关键层初次来压步距和周期来压步距的计算公式。
- The study indicates that according to the formulae of combinatorial key stratum, coal roof weighting step in the 1203 face in Da-liu-ta mining is co the observation value. 结果表明，以该修正的组合关键层破断距公式计算的大柳塔1203工作面的初次来压步距与实测非常接近。
- Study on application of combinatorial key stratum theoryand parameters determining 组合关键层理论的应用研究及其参数确定
- combinatorial key strata 组合关键层
- Cantilever beam of key strata breaks and caves into blocks,which is periodic weighting of mining face. 关键层悬臂梁破断垮落成承压砌块,其垮落及沿架后切落,形成工作面周期来压。
- The mechanical model of key strata supported by coal pillar is set up according to the layout of coal pillars in the coalface of short wall mining. 根据短壁开采条件下保护煤柱的布设特点,建立由保护煤柱支承的关键层力学分析模型。
- The results show that the key strata control the emergence, development and space-time distribution of the overburden bed separations and fractures. 结果证明：覆岩关键层对离层及裂隙的产生、发展与时空分布起控制作用。
- The idea of key stratum pressure is put forward, and the ground pressure is mainly influenced by the breakage of key . 提出主关键层来压的新概念,指出回采工作面矿压显现程度主要受主关键层破断的影响。
- A great deal of analysis and research indicates that the crack damage is controlled by the key stratum in the overburden strata. 大量研究表明，这种裂缝损害受覆岩中关键层的控制。
- The caving of thick and strong roof stratum,key stratum,causes tremendous rock pressure in mine. 采场上覆岩层中的厚硬岩层,即厚硬关键层,其冒落会造成剧烈的矿山压力显现。
- According to the model,applying the cusp catastrophic theory the mechanics mechanism of water inrush is analyzed from key stratum of floor. 当满足关键层失稳的充要力学条件时,承压水底板有可能发生失稳突水。
- By use of FLAC, the mining model of a working face in some mine was built and the dynamic change process of load on key strata before primary broken during mining was researched. 摘要利用FLAC数值模拟软件建立矿区具体工作面的开采模型，模拟研究了随着煤层的开采关键层初次破断前载荷的动态变化过程。
- Satisfying the sufficient mechanics condition for key stratum instability, a water inrush is likely to happen in the floor. 当满足关键层失稳的充要力学条件时，承压水底板有可能发生失稳突水。
- Based on the structural characteristics of floor in the longwall face, the structural model of the key stratum (KS) in floor is established. 根据采场底板岩体结构特征,建立了底板岩体的关键层(KS)结构模型。
- Base on the back ground of Dafosi Mine project,the key strata theory and cusp catastrophe theory was applied to analyze the mine water inrush mechanism from roof. 以大佛寺煤矿工程为背景,运用关键层理论与尖点突变理论分析了采场顶板透水的发生机理,认为基岩关键层突发性破断失稳是顶板突水的诱因。
- The comprehensive study of complex effect of key stratum plays an important role in understanding control mechanism of key stratum in overlying strata within mining influence. 研究关键层的复合效应对深入揭示关键层在采动覆岩中的控制机理具有重要推动作用。
- Studied the shock bump caused by the key stratum movement in Huafeng Colliery using the microseism locating and monitoring technology. 摘要采用微地震定位监测技术对华丰煤矿关键层运动诱发矿震进行了研究。
- The main key stratum that is made up of the hard stratum covering over the coal seam has a great influence on rock burst. 摘要煤层上覆坚硬厚层岩层组成的主关键层对冲击矿压的发生具有强烈的影响。
- Based on the moving regulation of the above strata, the key strata theory is introduced to set up the mechanical model of the surrounding rock for GEFCTC. 根据上履煤岩层活动的空间特徵及分期规律，引入关键层理论，建立综放沿空留巷的围岩结构力学模型。
- Based on the 3D rock cracking imaging, obtained the conclusions: key stratum can be classified according to the special attribution of the microseismic cracking events. 根据岩体在三维空间的破裂成像，得出：可以依据微震破裂事件的空间分布对关键层进行划分；
