高边坡整治工程中预应力锚索应用

在水利、道路及城市建设过程中,因人工开挖往往形成人工高陡岩质边坡,如不加以支护加固处理,在降雨及其他因素作用或影响下易形成崩塌或滑坡灾害,造成人员或财产损失。以巫师附小治理工程为例,对高陡的边坡采取加固处理,加固措施采用1000 kN级预应力锚索,共42束,进尺1010 m,施工后对边坡进行了变形监测,监测数据表明:加固后的边坡满足设计要求。

Application of Prestressed Anchor Cable in High Slope Treatment Project

In the process of water conservancy,road and urban construction,artificial high and steep rock slope is often formed due to manual excavation.If it is not reinforced,it is easy to form collapse or landslide disaster under the action or influence of rainfall and other factors,resulting in personnel or property losses.Primary school affiliated to Wushan Normal University is a typical example of the treatment project after the formation of high slope in the process of urban construction.The width of the slope is about 60m;the slope height is about 35m,and the overall slope is about 50 degrees.The combination of bedding plane fissures and fault planes forms an unfavorable structural plane inclined to the outside of the slope.The inward excavation of slope will cause slope deformation.In order to ensure the safety of the houses on the top of the slope and the road at the foot of the slope,the high and steep slope is reinforced by 1000KN prestressed anchor cables with a total of 42 strands and drilling depth of 1010m.After the construction,the deformation of the slope is monitored.The monitoring data show that the reinforced slope meets the design requirements.