• 煤巷锚杆支护一个隐蔽工程,锚杆支护成功与否关键在于施工质量,本文主要对锚杆施工工艺进行了相应论述

    Bolt supporting is a concealed engineering, and the key is the quality of construction. The technique of bolt supporting is mainly expounded in this paper.

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  • 顶板多数岩体强度沉积岩,层状岩体结构是沉积岩的主要特征之一。

    Most rock roof of roadway is sediment rock, so its intensity is low, the stratification is a common rock mass structure in coal mines.

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  • 前言:“条件下半掘进一直影响大同矿集团有限责任公司采掘关系主要问题

    Half coal rock lane quick-excavating technique under the condition of "two hard" has always been a main excavating problem influencing the Datong mining Cop.

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  • 实体支承压力影响沿空掘稳定性主要原因之一

    The high abutment pressure on the integrated coal beside the roadway is one of the reasons to lead to floor heave and affect the stability of the roadway driving along next goaf.

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  • 实体支承压力影响沿空掘稳定性主要原因之一

    The high abutment pressure on the integrated coal beside the roadway is one of the reasons to lead to floor heave and affect the stability of the roadway driving along next goaf.

    youdao

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