预应力群锚高边坡增稳机理研究  

Study of mechanism of increasing stability of high slopes with prestressed anchor groups

作　　者：黄福德[1] 吕祖珩[1] 

机构地区：[1]国家电力公司西北勘测设计研究院,西安710001

出　　处：《西北水电》2000年第4期99-52,共1页Northwest Hydropower

摘　　要：:“高边坡预应力群锚加固机理研究”项目为国家“八五”重点科技攻关项目。其中加锚岩体的变形体传力特征 ,通过现场群锚试验、室内模型试验和数值计算验证研究 ,发现了群锚增稳不同于刚体法加锚的岩体的受力、传力动态机理效应 ,提出了依安全度布锚增效的新参数理论 ,探讨了判别加锚效果的岩体表层新生压应力层的“岩壳效应”场的机理依据。The stress characteristics of deformed rockmass with anchors are discussed through in situ tests of anchor groups,lab model tests and digital computation verification.It is found that increasing stability by anchor groups is different from the stress and dynamic mechanism of force transfer and thus the new parametric theory for strengthening rockmass by providing anchors in terms of its degree of safety.The mechanism of crustal effect field of the newly built compressive stress zone at rockmass subsurface is also probed,which is taken as the basis of anchoring effect discrimination.der and decoder of DAB are described in detail. Key words: digital audio broadcast(DAB); coder; decoder

关 键 词：高边坡 预应力 增稳机理 群锚加固 水电站 

分 类 号：TV223.34[水利工程—水工结构工程]