加固含水平软弱层高陡边坡预应力锚索倾角的取值范围  

Research on Obliquity Value Range of Prestress Anchoring Rope Strengthening on High and Steep Slope Containing Horizontal Weak Layers

作　　者：宋书志[1,2] 孔纪名[1] 杨宗佶[1,2] 刘正梁[1,2] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [2]中国科学院研究生院,北京100049

出　　处：《山地学报》2006年第B10期217-221,共5页Mountain Research

基　　金：交通部西部交通建设科技项目《西部地区公路地质灾害监测预报技术研究》资助（2003-318-802-01）

摘　　要：用直线和曲线滑面两种模型，模拟预应力锚索加固含有水平软弱层的高陡边坡的潜在滑动面，通过对锚索加固的力学机理分析来阐述预应力在滑动面主滑方向上产生分力的原因。从锚索受力角度上对锚索倾角的取值范围进行探讨，结合实际造孔过程有不同程度的孔斜或弯曲以及获取较好的锚固灌浆效果，就仰角锚固和俯角锚固两种锚固条件分别得出锚索倾角的取值范围，并以此来判定锚索的预应力是否会在滑动面走向方向上产生不利于坡体稳定的下滑力。Through simulating the potential slip surface on high and steep slope which contains horizontal weak layers by linearand curve modelsand analyzing anchoring rope strengthening by the dynamics mechanism, this article studies component of forces produced by prestress along the alope surface. The value scope of anchoring ropeobliquity was also discussed in point of view of force ofanchor cable. To judge whether slide-down power produced by prestress of the anchoring rope different degree of the hole slanting or curve occurred in the process of drill, better anchoring grout effect and the obliquity scope of anchoring rope rested with angel of depression and angle of elevation of anchorage was taken into account together.

关 键 词：预应力锚索 锚索倾角 高陡边坡 软弱层 

分 类 号：TU457[建筑科学—岩土工程]