四川省某长江大桥引道滑坡形成机理及处治措施

A YANGTZE RIVER BRIDGE APPROACH ROAD LANDSLIDE FORMATION MECHANISM AND TREATMENT MEASURES,SICHUAN PROVINCE

四川省某长江大桥引道K11＋580～K11＋725段原设计为填方，在填筑的过程中，填筑路堤及斜坡面出现不规则的裂缝，经现场勘察确定该段填方路堤筑于古滑坡上，填方加载作用引起古滑坡局部复活；结合支挡、减载、排水等处治措施，制定了预应力锚索抗滑桩、普通抗滑桩、桥梁三个方案，从经济、合理的角度考虑，采用锚索抗滑桩方案。

In Sichuan province, a Yangtze river bridge approach road Kll ＋580-K11 ＋725, the original design was he filling of embankment. During the construction, irregular cracks developed in the filling embankment and the slope surface. The site investigation showed that the filling embankment was constructed on ancient landslide and filling load caused partial revival of the ancient landslide. Combination retaining, load shedding, drainage and other treatment measures, developed a prestressed anchor Anti-sliding piles, the general anti-sliding piles, bridges three options, and based on economic and reasonable view, anchor Anti-sliding piles was put into practice.