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大断面煤巷预应力桁架锚索的理论与实践 预览 被引量:70

Application of prestress truss cable in large cross section coal roadway
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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%. 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 s...
作者 赵洪亮 姚精明 何富连 刘海涛 张守宝 ZHAO Hong-liang1; YAO Jing-ming2; HE Fu-lian2; LIU Haitao2; ZHANG Shou-bao2(1.School of Resource and Safety Engineering; China University of Mining and Technology(Beijing); Beijing 100083; China; 2.State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education; University of Science and Technology Beijing; China);
出处 《煤炭学报》 EI CAS CSCD 北大核心 2007年第10期,共5页 Journal of China Coal Society
基金 高等学校优秀青年教师教学科研奖励计划资助项目
关键词 大断面巷道 预应力 桁架锚索 普通锚杆(索) large cross section roadway prestress truss cable common bolt(cable)
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