摘要
钢管压力注浆型抗滑挡墙是一种将注浆方法与微型桩群方法联合使用的技术,受力分析时可看作一个抗滑挡墙,其最大特点是将滑坡中的一部分滑动体加固成抗滑体来达到对滑坡治理的目的。以京珠高速公路K108滑坡为例,介绍滑坡的地层岩性、地质构造及水文地质特征,应用位移监测方法查明滑坡有5层滑动带;采用钢管压力注浆型抗滑挡墙加固后,通过PS波速测试与旁压试验检验得出,压力注浆对滑坡岩土体的力学性质有较大改善作用;再结合截排水隧洞排出滑体内地下水,通过滑坡测斜孔的位移监测分析及稳定性验算,得出滑坡已处于稳定状态,达到滑坡治理的目的。
Steel-tube bored grouting anti-sliding retaining wall is a technique of combining grouting with micropiles, which is treated as a retaining wall in mechanical analysis. The most significant feature is that steel-tube bored grouting anti-sliding retaining wall changes a part of sliding mass to anti-sliding mass. Taking the landslide K108 of Guangdong segment of Beijing--Zhuhai Expressway for example, the strata lithology, geologic structure and hydrogeologic feature of the landslide are introduced; and the five slip surfaces are found by displacement monitoring. The landslide is reinforced by steel-tube bored grouting anti-sliding retaining wall and discharging groundwater from sliding mass; the properties of rocks and soils in the landslide are checked by means of PS wave test and pressuremeter test. The landslide K108 is proved to be stable by means of analysis of monitoring displacement and stability computation. The results show that the steel-tube bored grouting anti-sliding retaining wall is an effective method for treating landslide.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第2期399-406,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(50278081)
关键词
边坡工程
钢管压力注浆型抗滑挡墙
微型桩
滑坡
PS波速测试
旁压试验
稳定性
lope engineering
steel-tube bored grouting anti-sliding retaining wall
micropiles
landslide
PS wave test
pressure meter test
stability
