• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

沿空留巷顶板离层力学模型与机理

谢正正, 张农

谢正正, 张农. 沿空留巷顶板离层力学模型与机理[J]. 煤矿安全, 2016, 47(8): 45-48.
引用本文: 谢正正, 张农. 沿空留巷顶板离层力学模型与机理[J]. 煤矿安全, 2016, 47(8): 45-48.
XIE Zhengzheng, ZHANG Nong. Mechanical Model and Mechanism of Roof Separation in Gob-side Entry Retaining[J]. Safety in Coal Mines, 2016, 47(8): 45-48.
Citation: XIE Zhengzheng, ZHANG Nong. Mechanical Model and Mechanism of Roof Separation in Gob-side Entry Retaining[J]. Safety in Coal Mines, 2016, 47(8): 45-48.

沿空留巷顶板离层力学模型与机理

Mechanical Model and Mechanism of Roof Separation in Gob-side Entry Retaining

  • 摘要: 为研究沿空留巷顶板离层的变化规律,根据留巷顶板离层演化机制,基于弹性梁弯曲理论,建立沿空留巷顶板离层力学模型。由叠加法原理确定了模型最终的挠度方程解析式,基于此模型确定了锚固区内外顶板离层量的计算方法,根据相关参数求出离层值,进一步确定了顶板离层量为0时有效的锚固荷载。以某矿1205工作面沿空留巷作为模型的算例,结果表明:在没有锚固载荷的作用下最大的离层值为38 mm,以及顶板离层值为0时锚固荷载为2.3 MPa,并结合理论分析与现场情况提出了有效的支护方案。
    Abstract: In order to study the laws of roof separation in gob-side entry retaining, a mechanical model was established on the basis of evolution mechanism of roof separation in gob-side entry retaining based on the elastic theory of beams. The analytic expression of deflection equation was determined through the principle analysis of superposition method; based on the mechanical model, we proposed a method to determine roof separation of anchorage zone, and further determined the anchor load effectively when the anchorage effect is equal to zero. 1025 working face in a mine roadway was taken as a calculation example, and the results showed that, the maximum roof separation value is 38 mm without the anchorage effect and the anchor load is 2.3 MPa when the anchorage effect is equal to zero; effective supporting scheme was provided, which combined with theoretical analysis and field conditions.
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出版历程
  • 发布日期:  2016-08-19

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