| 复合顶板离层分析与预应力锚杆支护参数确定 |
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| 引用本文： | 张国华,张雪峰,蒲文龙,毕业武. 复合顶板离层分析与预应力锚杆支护参数确定[J]. 辽宁工程技术大学学报(自然科学版), 2010, 29(2) |
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| 作者姓名： | 张国华 张雪峰 蒲文龙 毕业武 |
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| 作者单位： | 1. 黑龙江科技学院,安全工程学院,黑龙江,哈尔滨,150027;辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000
2. 黑龙江科技学院,安全工程学院,黑龙江,哈尔滨,150027 |
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| 基金项目： | 黑龙江省研究生创新科研基金资助项目 |
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| 摘 要： | 为了解决复合顶板端头锚固预应力锚杆支护中其技术参数确定问题,通过理论分析,给出了锚杆长度、间距、排距、预紧力四个关键支护技术参数的确定过程及相应计算公式,通过现场工业试验收到了满意效果。研究表明:直接顶范围内岩层分层之间发生离层必须同时满足载荷、跨度、挠度三个条件;锚杆组合作用下组合梁内的岩层组合属于关键分层之间的组合;锚杆技术参数确定应遵循变形协调一致的原则。该研究对回采巷道顶板锚杆支护设计具有一定的指导意义和参考价值。
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| 关 键 词： | 回采巷道 复合顶板 预应力锚杆 组合梁 关键分层 |
Analysis of complex roof separation and parameters determination of prestressed bolt supporting |
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| ZHANG Guohua,ZHANG Xuefeng,PU Wenlong,BI Yewu. Analysis of complex roof separation and parameters determination of prestressed bolt supporting[J]. Journal of Liaoning Technical University (Natural Science Edition), 2010, 29(2) |
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| Authors: | ZHANG Guohua ZHANG Xuefeng PU Wenlong BI Yewu |
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| Affiliation: | ZHANG Guohua1.2,ZHANG Xuefeng1,PU Wenlong1,BI Yewu1 (1.Safety Engineering College,Heilongjiang Science and Technology Institute,Harbin 150027,China,2.School of Mechanics & Engineering,Liaoning Technical University,Fuxin 123000,China) |
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| Abstract: | In order to determine the parameters for pre-stressed bolting system on compound roof at mine roadway,based on theoretical analysis,this paper presents the procedure for determining pre-stressed bolt's length,spacing between bolts,distance between rows and pretension force,as well as their corresponding formulas.The site application provides the satisfactory results.The study shows that the seam separations in immediate roof must satisfy three conditions at the same time including load,span and deflection d... |
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| Keywords: | mine roadway compound roof pre-stressed bolt composite beams key strata |
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