涪陵长江大桥南引道高边坡稳定分析

Stability analysis of high slope at Fuling Yangtze River bridge's south leading road

根据重庆市涪陵区长江大桥南引道进行切坡时引起的高边坡失稳实例,着重地分析了高切坡演变成变形体或滑坡是由地质条件、气象条件和人类活动引起的必然条件,及造成失稳的机理,提出了牵引式滑坡大部分是由于施工开挖方法不当引起的,特别是在切坡工程中,切除边坡支撑体,使时效变形区和破坏变形区扩大,在水的影响下,易形成边坡滑动。并提出了治理这类滑坡应加强监测、设置抗滑桩加大支撑作用、增设锚杆档墙护坡和合理开挖施工等防、治相结合综合治理措施。

In light of the instable case when cutting the slope of Chongqing Fuling Yangtze River Bridge's south leading road,of which the mechanism of instability is analyzed emphatically.It is shown that landslide is mostly caused by the improper digging in the construction,and the prophylaxis and treatment measures of this kind of slides are proposed.