赵明洲, 杨仁树, 方娟. 大厚度薄层复合顶板煤巷高强联合支护技术[J]. 煤矿安全, 2019, 50(8): 84-87.
    引用本文: 赵明洲, 杨仁树, 方娟. 大厚度薄层复合顶板煤巷高强联合支护技术[J]. 煤矿安全, 2019, 50(8): 84-87.
    ZHAO Mingzhou, YANG Renshu, FANG Juan. High-strength Combined Supporting Technology of Coal Roadway with Large Thickness and Thin-Layered Composite Roof[J]. Safety in Coal Mines, 2019, 50(8): 84-87.
    Citation: ZHAO Mingzhou, YANG Renshu, FANG Juan. High-strength Combined Supporting Technology of Coal Roadway with Large Thickness and Thin-Layered Composite Roof[J]. Safety in Coal Mines, 2019, 50(8): 84-87.

    大厚度薄层复合顶板煤巷高强联合支护技术

    High-strength Combined Supporting Technology of Coal Roadway with Large Thickness and Thin-Layered Composite Roof

    • 摘要: 为解决赵庄矿53151运输巷大厚度薄层复合顶板煤巷变形剧烈问题,结合现场调查、实验室试验、理论分析和物理试验等方法,分析出复合顶板的分层厚度、膨胀性矿物含量、支护体及护表构件等支护参数不合理是导致该巷变形破坏的主要原因。基于悬吊理论和组合梁理论,提出了“高强联合支护技术”,并对支护参数进行了优化。数值模拟和现场实践结果表明:与原支护方案相比,优化后支护方案的巷道顶底板移近量和两帮移近量分别降低了80%和63%以上,取得了良好的围岩控制效果。

       

      Abstract: To solve the problem of large deformation of the roadway with large thickness and thin-layered composite roof in the 53151 haulage roadway of Zhaozhuang Coal Mine, combining with field investigation, laboratory experiments, theoretical analysis and physical experiments, the main causes of deformation and failure of the roadway are analyzed, including the thickness of stratification of composite roof, content of expansive minerals, unreasonable supporting parameters of supporting body and supporting surface components. Based on the theory of combination beam and suspension, the “high-strength combined support technology” is proposed, and the support parameters are optimized. The results of numerical simulation and field practice show that compared with the original support scheme, the deformation amount of roof and floor and two sides of roadway in the optimized supporting scheme are reduced by more than 80% and 63% respectively, and good surrounding rock control effect is achieved.

       

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