• 采场设计管理关键因素岩层运动规律是采场控设计依据

    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.

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  • 本文将倾斜长壁仰、俯开采岩层视为倾斜弹性

    The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.

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  • 张双楼煤矿采煤层79煤,煤之间赋存唯一一层厚岩层,即9煤层直接也是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.

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  • 工作面非放工作面的区别采空区充填系数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.

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  • 从而提出石圪节煤矿残留煤柱岩层具有明显薄板特征波动特征的基本载荷支架选型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.

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  • 研究结果表明煤柱支承压力分布开采影响岩层相互作用结果,是开采引起集中应力在煤层直接界面上直接反映

    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.

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  • 煤层直接之间存在极易垮落软弱岩层井下采煤工作面回采时,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.

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  • 运移垮落,尤其是内部微观裂隙的扩展与其直接岩层活动规律密切相关

    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.

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  • 随着矿井增加,巷道底板岩层表现特性导致巷道形成严重

    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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  • 随着矿井增加,巷道底板岩层表现特性导致巷道形成严重

    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.

    youdao

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