三段式岩质边坡锁固段破坏试验研究.pdf

2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/8js2016070095 三段式岩质边坡锁固段破坏试验研究* 唐鹏，陈国庆，冉耀，王润平，路晓东，黄博睿 (成都理工大学环境与土木工程学院，四川成都610059) [摘要]三段式滑坡是我国西部地区的一种典型岩质滑坡地质灾害，它的稳定性主要受控于锁固段.运用二维地 质力学加载系统对三段式滑坡进行物理模拟研究，再现了三段式滑坡蠕滑拉裂剪断变形破坏全过程，对锁固段的 变形破坏全过程进行应变监测，从定性和定量的角度对锁固段变形破坏进行了研究分析.结果表明：锁固段的破 坏是脆性剪切破坏，锁固段上端的横向应变和下端的纵向应变对锁固段破坏的预测有指导意义. [关键词]边坡：滑坡；锁固段：试验：物理模拟 [中图分类号]P642.22 [文献标识码]A [文章编号]1002-8498(2016)07-0095-04 Test Study on Damage Failure of Locking Section of Three- segment Rock Landslides Tang Peng Chen Guoqing Ran Yao Wang Runping Lu Xiaodong Huang Borui College of Environment and Ciril Engineering Chengdu Uniersity of Technology Chengdu Sichuan 610059 China) Abstract:Three-segment landslides are unique rock landslides in western China whose stability mainly leans on locking section.According to two-dimensional geomechanics loading system the physical simulation of three-segment landslides was acplished.The experiment achieved the reappearance of the whole process of the deformation of three segments landslides in laboratory.The deformation was tested by strain measuring instruments.The process from deformation to failure of locking section was analyzed based on data and observation.It shows that the failure of the locking section is brittle shear failure.The lateral strain of upper locking section and the longitudinal strain of the bottom of locking section have the guiding significance to predict the failure of locking section. Key words:slope;landslides;locking se...