| 大断面煤巷预应力桁架锚索的理论与实践 |
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| 引用本文： | 赵洪亮,姚精明,何富连,刘海涛,张守宝. 大断面煤巷预应力桁架锚索的理论与实践[J]. 煤炭学报, 2007, 32(10): 1061-1065 |
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| 作者姓名： | 赵洪亮 姚精明 何富连 刘海涛 张守宝 |
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| 作者单位： | 中国矿业大学(北京)资源与安全工程学院,北京,100083;北京科技大学,金属矿山高效开采教育部重点实验室,北京,100083 |
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| 基金项目： | 教育部高等学校优秀青年教师教学科研奖励计划 |
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| 摘 要： | 从力学角度重点论述了普通锚杆（索）在大断面煤巷支护失效的原理以及预应力桁架锚索的支护原理，采用数值模拟计算设计和优化五阳煤矿桁架锚索支护方案，现场实测顶板下沉量为120 mm，仅为普通锚杆（索）支护时的34.6%；掘进期间顶板主要移动活跃时限为 14~20 d，之后趋于稳定；月进115 m，比普通锚杆（索）提高了15%.
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| 关 键 词： | 大断面巷道 预应力 桁架锚索 普通锚杆(索) |
| 文章编号： | 0253-9993(2007)10-1061-05 |
| 收稿时间： | 2006-10-17 |
| 修稿时间： | 2006-10-17 |
Application of prestress truss cable in large cross section coal roadway |
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| ZHAO Hong-liang,YAO Jing-ming,HE Fu-lian,LIU Hai-tao,ZHANG Shou-bao. Application of prestress truss cable in large cross section coal roadway[J]. Journal of China Coal Society, 2007, 32(10): 1061-1065 |
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| Authors: | ZHAO Hong-liang YAO Jing-ming HE Fu-lian LIU Hai-tao ZHANG Shou-bao |
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| Abstract: | From the point of view of mechanics,gave emphasis on the invalid mechanics of common bolt(cable) and support mechanics of prestress truss cable in coal roadway with large cross section,and designed and optimized support scheme of truss cable by numerical stimulation in Wuyang Mine.The actual measurement shows that roof convergence is 120 mm,which is 34.6 percent of that of the support by common bolt(cable);and the main deformation of roof is in the first 14~20 days after the roadway excavation and becomes stable after that; and there excavates 15m away in a month which enhances 34.6 percent than that of common bolt(cable). |
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| Keywords: | large cross section roadway prestress truss cable common bolt(cable) |
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