滑坡推力特征及其对抗滑效果的评价

STUDY ON THE CHARACTER ISTIC OF LANDSLIDE THRUST AND EVALUATION ON THE EFFECTIVENESS OF LANDSLIDE CONTROL

滑坡推力大小是滑坡整治工程方案选择的重要依据之一 ,也是滑坡防治技术人员对其如何准确计算感到十分棘手的问题。由于土介质的多样性 ,滑动过程及滑坡体本身的复杂性 ,加之其强度随外界因素变化而变化 ,很难准确估算滑坡实际推力状态及其变化过程。当抗滑结构物建成后 ,其抗滑效果究竟如何 ?是否能达到预期目的 ?均需要对其进行实测评价。本文通过对成昆线沙北 1号滑坡、甘洛2号滑坡、川藏公路龙胆溪滑坡抗滑结构物受力状态的实测及室内试验 ,结合国内外已有资料对滑坡推力特征进行了分析 。

How to determine the landslide thrust is one of the most important basis for choosing the control project,and how to calculate accurately is always a tough problem for technicians as the different developing stage of landslide and the strength character of different place slip of landslide varies.How was the effectiveness of landslide control after the anti-slide construction has been build?In the paper,on the basis of in-situ survey and model-simulation of landslide thrust,the force distribution rule of retaining walls & retaining piles with prestressing cables are analyzed.Then,the curves of landslide thrust-time of retaining walls & retaining piles are discussed.Moreover,the effectiveness of landslide control is evaluated by the characteristic of landslide thrust.