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

直接顶厚度对厚硬顶板工作面矿压显现规律的影响

邵淑成, 杨科, 徐伟, 金声尧

邵淑成, 杨科, 徐伟, 金声尧. 直接顶厚度对厚硬顶板工作面矿压显现规律的影响[J]. 煤矿安全, 2017, 48(3): 202-204,208.
引用本文: 邵淑成, 杨科, 徐伟, 金声尧. 直接顶厚度对厚硬顶板工作面矿压显现规律的影响[J]. 煤矿安全, 2017, 48(3): 202-204,208.
SHAO Shucheng, YANG Ke, XU Wei, JIN Shengyao. Influence of Immediate Roof Thickness on Strata Behaviors Rule in Thick-hard Roof[J]. Safety in Coal Mines, 2017, 48(3): 202-204,208.
Citation: SHAO Shucheng, YANG Ke, XU Wei, JIN Shengyao. Influence of Immediate Roof Thickness on Strata Behaviors Rule in Thick-hard Roof[J]. Safety in Coal Mines, 2017, 48(3): 202-204,208.

直接顶厚度对厚硬顶板工作面矿压显现规律的影响

Influence of Immediate Roof Thickness on Strata Behaviors Rule in Thick-hard Roof

  • 摘要: 为研究直接顶厚度变化对厚硬基本顶工作面开采的影响,以淮南潘二矿11313工作面的工程条件为研究背景,基于煤岩物理力学参数测试分析,构建了UDEC2D数值模拟模型,分析了无直接顶、1.58 m直接顶、5 m直接顶、9 m直接顶4种顶板条件下综采工作面矿压特征。研究表明:0~1.58 m直接顶条件下的初次来压步距小于5~9 m直接顶条件,薄直接顶条件下的支架动载系数较大,工作面煤壁片帮严重;5~9 m直接顶条件下的持续来压步距大,对支架的工作阻力要求高。
    Abstract: In order to study the influence of immediate roof thickness on thick-hard roof mining, taking engineering specifications at 11313 longwall working face in Pan'er Coal Mine as research background, based on analyzing physical and mechanical parameters of coal and rock, the UDEC2D model was built to simulate patterns of ground pressure with fully mechanized coal mining in different thickness of immediate roof including 0 m, 1.58 m, 5 m and 9 m. Results show that immediate roof is the key role in transferring load between thick-hard rock and hydraulic support set at working face. When the thickness of immediate roof is thin of 0 to 1.58 m, the first weighting interval of main roof is less than the condition of 5 m to 9 m. under the condition of thin immediate roof, the dynamic load coefficient of support is larger, and wall caving of working face is serious. However, when the thickness of immediate roof is from 5 m to 9 m, weighting time and interval will be increased and working resistance of support will be needed.
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  • 发布日期:  2017-03-19

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