滑坡区域深基坑开挖变形控制研究

Study on the Deformation Control of Deep Excavation in Landslide Area

在滑坡堆积体区域内开挖基坑的工程经验很少,不仅需要解决基坑与滑坡堆积体的稳定性问题,同时也需要有效地控制挖土应力释放所引起的滑坡体变形问题,以达到保护滑坡体上建构筑物之目的。本文通过具体工程案例探讨了滑坡堆积体地区深基坑开挖的变形控制设计方法。选择典型剖面建立有限元模型,对基坑开挖及滑坡体加固施工过程再现,分析研究加固对变形控制的效果。监测结果表明,本工程的加固措施以及数值模拟成果都较为可靠,可为类似工程提供借鉴。

Deep excavation experience in landslide area is less now. Both the stability and the deformation control are important for the excavation clue to the complicated influence between the landslide and excavation. In this paper, the deibrmation eontrol discussion is presented tbrough a real project praetiee. Finite element models are employed to study the effect of the slope reinforcement to the deformation induced by the excavation. From the observed deformation values, it can be found that the reinforcement measures in the discussed project are effective and the numerical simulation results are reasonable.