| 综放工作面直接顶稳定性研究及控制实践 |
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| 引用本文： | 翟明华,张顶立.综放工作面直接顶稳定性研究及控制实践[J].湖南科技大学学报(自然科学版),1998(3). |
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| 作者姓名： | 翟明华 张顶立 |
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| 作者单位： | 徐州矿务局三河尖煤矿 |
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| 摘 要： | 通过大量现场实测与系统的理论分析指出，“砌体梁”与“半拱”式结构相结合共同构成综放采场覆岩结构的基本形式．在此基础上，对上位直接顶中“半拱”结构的３种形式进行了分析，建立了相应的力学模型，对其平衡条件、失稳机理以及与砌体梁结构的相互作用关系进行了分析，从而形成了综放开采直接顶稳定性控制的基本理论和方法．最后介绍了综放开采的矿压控制实践．图４，表２，参４．
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| 关 键 词： | 综放开采 直接顶 半拱结构 稳定性 |
STABILITY OF IMMEDIATE ROOF AND CONTROL PRACTICE IN LONGWALL SUB-LEVEL CAVING FACE |
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| Zhai Minghua,Zhang Dingli.STABILITY OF IMMEDIATE ROOF AND CONTROL PRACTICE IN LONGWALL SUB-LEVEL CAVING FACE[J].Journal of Hunan University of Science & Technology(Natural Science Editon),1998(3). |
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| Authors: | Zhai Minghua Zhang Dingli |
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| Abstract: | On the basis of a large of in-situ measurements and theoretical analysis,it is put forward that structure of voussior beam combined with semi-arch is the basic structure of the overlying strata in longwall sub-level caving mining.Based on above,three structure types of "semi-arch" in upper portion of immediate roof under "voussior beam" are advanced in the paper,and equilibrium conditions and destabilization mechanism of strata structure,as well as interaction of the "semi-arch" and "voussoir beam" structure are analysed,thus basic theory and method of stability control of immediate roof in longwall sub-level mining is formed.Finally, roof control practice in sub-level caving mining is presented.4figs.,2tabs.,4refs. |
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| Keywords: | sub-level caving mining immediate roof semi-arch structure stability |
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