减压沉井在滑坡治理工程中的应用

THE APPLICATION OF RELIEF OPEN_END CAISSON TO LANDSLIDE CONTROL

对罗家塘滑坡的成因类型、影响因素及形成模式等进行了详细的分析 ,并对滑坡稳定性进行了认真的验算 ,论证了降低承压水头对治理滑坡所起到的关键性作用 ,在此基础上 ,设计了抽水降压与沉井支挡相结合的综合治理方案 ,介绍了减压沉井的结构特点和排布方法 。

The rickles on limestone with critical section formed after people's digging is likely to lose its stability and makes landslide.Whereas the hold out agaist and soak under the confined water can intensify the destruction of the soil and make the slide widespread.We can apply the relief open_end caisson to the reduction of the confined water pressure and the increase of its anti_slide to harness this kind of landslide.In this article,the author first analyses the cause types,effect elements and the forming modes of landslide around Luo Jiatang area,carefully checks and computes its stability and verifies the key functions of reudcing the confined water pressure on harnessing landslide.then desingns the comprehensive harnessing measures by means of the combination of drawing water and open_end caisson retaining,introduces the structure and arrangement of relief open_end caisson and points out some problems during construction.