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。
The key stratum is not easy to cave, but once it is caved, there will be a sudden collapse of a rather thick stratum.
关键层较难崩落，但在崩落时具有突发性，会产生较大厚度岩层的突然垮塌。
The idea of key stratum pressure is put forward, and the ground pressure is mainly influenced by the breakage of key stratum.
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。
Studied the shock bump caused by the key stratum movement in Huafeng Colliery using the microseism locating and monitoring technology.
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。
According to the model, applying the cusp catastrophic theory the mechanics mechanism of water inrush is analyzed from key stratum of floor.
根据这一模型，应用尖点突变原理分析了承压水底板关键层失稳突水的力学机制。
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。
Based on the key stratum theory, the structure characteristics and movement laws of overlying strata with different mining height are studied.
运用关键层理论研究了采场覆岩结构特征及运动规律。
Through to acoustic emission technology understanding, in the light of the mining engineering key stratum theory, applies it in overhead mining.
通过对声发射技术的理解，结合采矿工程中关键层理论，将其应用到蹬空开采中。
The results show that bed separations mainly occur below the key strata, and the highest bed separation space is right below the primary key stratum.
结果表明：覆岩离层主要出现在各关键层下，覆岩离层最大发育高度止于覆岩主关键层。
Ground surface subsidence for the instability of key stratum and its instability conditions are quantitatively analyzed. The result is practical in engineering.
定量地分析了关键层失稳时的下沉量以及关键层的失稳条件，具有工程应用价值。
Based on the key stratum theory in ground control, the basic principle in the design of mining under buildings should ensure that the primary key stratum would not break.
在此基础上，提出将控制覆岩主关键层不破断失稳作为建筑物下采煤设计原则的观点。
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。
The loci of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived.
利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置，得到了顶板岩体关键层的最小破断跨距。
Theoretical analysis, simulation experiment and engineering exploration are adopted to study the impact of the location of primary key stratum on the evolution range of water flowing fracture.
采用理论分析、模拟实验和工程探测等方法，就覆岩主关键层位置对导水裂隙带高度的影响进行深入研究。
Stratum is an important idea of three dimension strata model. It plays a key action in instauration of three dimension strata model.
地层作为三维地层模型的一个重要概念，在三维地层模型的建立中起着关键作用。
This paper introduces several key technological issues in the construction of highway tunnels under-crossing the gas stratum, which provides the reference for similar engineering.
着重介绍了公路隧道穿越含瓦斯地层时的几个关键性技术问题，为同类工程提供参考。
The high temperature of stratum and incompatible of injected water and formation water are the key points of scaling and pressurizing.
储层温度高和注入水与地层水配伍性差是注入水结垢造成压力升高的主要因素。
Whether the natural sand gravel stratum in the river bed would serve as the foundation of the superhigh faced rockfill dam or not was one of the key technical problems of the project.
河床天然砂卵砾石层能否作为超高面板坝坝基是该工程的关键技术问题之一。
But the key point of the procedure depends on the issue, "whether or not can the higher education enrollment expansion reduce the social stratum closure."
但是这一命题的关键之处，或者这一命题的基石就在于高校扩招能否降低阶层间的封闭性。
The large oil tank group in Lanzhou, which is a part of the state key project-the western oil pipe line project, is constructed on the saturated loess stratum for the first time in China.
国家重点工程西部管道工程兰州原油末站超大型油罐群，是我国首次在高饱和度黄土地基修建的超大型储油设施。
The large oil tank group in Lanzhou, which is a part of the state key project-the western oil pipe line project, is constructed on the saturated loess stratum for the first time in China.
国家重点工程西部管道工程兰州原油末站超大型油罐群，是我国首次在高饱和度黄土地基修建的超大型储油设施。
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