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- theory of key stratum 关键层理论
- 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。
- It is pointed that the thick unconsolidated layers above roof have effect on post-buckling behaviors of key stratum, the equilibrium path of roof is unstable from breaking to final subsidence. 研究发现,顶板上覆厚松散沙层对关键层的后屈曲性态有影响;顶板从破断至极限下沉其平衡路径不稳定。
- The collapsing load of the key stratum is obtained by adopting the plastical limit analysis method structure.Based on the collapsing load,the posotion of key stratum can be estimated approximatively. 并且采用结构塑性极限分析方法解析得出了关键层失稳时的极限荷载,依据此极限荷载可以近似判断出覆岩中关键层的位置。
- 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。
- Without the guidance of the theory,some electric power suppliers came into action of the key account service.After explicating the basic theory of key account service marketing. 本文以商丘供电公司为研究对象,在对大客户服务营销理论阐述的基础上,分析了商丘供电公司大客户服务营销现状和问题。
- Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
- THEORETICAL STUDY OF KEY STRATUM IN GROUND CONTROL 岩层控制中的关键层理论研究
- Einstein's theory of relativity. 爱因斯坦的相对论。
- Do you agree to the wave theory of light? 你同意光的波动理论吗?
- The results show that if there exists a key stratum in the omitted strata, it will lead to the distortion of the distribution of load and the simulation result of key strata fracture... 只有主关键层上部的岩层可以简化为均布载荷;包含关键层时不能简化为均布载荷;其等值载荷与被省略岩体中关键层的位置及其破断特征有关.
- He cavalierly dismisses the theory of both Freud and Jung. 他傲慢武断地斥贬佛洛依德和杨格二人的理论。
- 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。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- 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 organ has two banks of keys. 那架风琴有两排键盘。
- Not everyone can understand Einstein's Theory of Relativity. 不是每个人都能读懂爱因斯坦的相对论的。
- With a specially designed experimental instrument, the mechanism of load transfer within an unconsolidated confined aquifer and its effect on compound breakage of key strata have been studied. 摘要采用专门设计的物理模拟试验装置及数值模拟试验方法,就松散承压含水层的载荷传递机制及对覆岩关键层复合破断的影响进行深入研究。
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
- He discoursed impressively on Newton's theory of gravity. 他讲述了牛顿的引力定律,给人以深刻的印象。