采场控顶设计是顶板管理的关键因素,而顶板岩层的运动规律是采场控顶设计的依据。
The roof control design in mined field is the key to roof control and the movement rule of roof terrane is the basis of the roof control design.
本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。
The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.
张双楼煤矿主采煤层为7煤和9煤,两层煤之间赋存唯一一层厚硬岩层,即9煤层的直接顶也是7煤层的直接底。
The hard-and-thick strata ACTS both as the floor of coal seam No. 7 and as the roof of coal seam No. 9 in Zhangshuanglou coal Mine; and coal seam No. 9 is also hard.
放顶煤工作面与非放顶煤工作面的区别是,采空区充填系数小,顶板岩层运动剧烈,走向方向超前支承应力峰值较大。
The differences between the coal drawing face and non-coal drawing face are low stowing factor in the goaf, vigorous movement of roof, and high stress peak abutment pressure along the strike.
从而提出石圪节煤矿残留煤柱顶板岩层具有明显的薄板特征、波动特征的基本顶载荷是支架选型的关键因素及综采回收矿井残留煤柱支架选型的依据。
Thereby it can be seen that the load of Shi ge-jie mine coal pillar roof with sheet character and fluctuate character are the key factors of support selecting.
研究结果表明,煤柱上支承压力分布是开采影响岩层相互作用的结果,是开采引起集中应力在煤层与直接顶界面上的直接反映。
The results show that the abutment pressure distribution on coal pillar is the direct reflection of abutment stress induced by mining on the interfaces of coal seam and immediate roof.
伪顶是在煤层与直接顶之间存在的极易垮落的软弱岩层,在井下采煤工作面回采时,会常常遇到。
The false top is the existence pole exchanges weak caving rock stratum between the coal seam and direct top. In the coal mining, it may often be happened.
顶煤的运移与垮落,尤其是内部微观裂隙的扩展,与其直接顶和老顶岩层的活动规律密切相关。
The movement and breakage of top coal, especially its internal micro-fracture extension, are closely related to the movement regularity of its immediate roof and main roof.
随着矿井采深的增加,巷道顶底板岩层表现出软岩特性,常导致巷道形成严重的底臌。
With the increasing of mining depth, the roof-floor lithology of the tunnel shows the characteristics as soft rock, normally resulting in the drift floor-heave.
随着矿井采深的增加,巷道顶底板岩层表现出软岩特性,常导致巷道形成严重的底臌。
With the increasing of mining depth, the roof-floor lithology of the tunnel shows the characteristics as soft rock, normally resulting in the drift floor-heave.
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