反压平台法成功处理深厚软基土坝的滑坡

Successful Treatment of Landslide of Deep Soft Foundation Earth-dam by Using Method of Counter Pressure Platform

在软基上筑土坝难度较大,施工过程中坝体可能会出现不同程度的滑坡等问题。通过工程实例说明,当在软基上填筑坝体过程中先后出现倾向上游和下游的裂缝时,在上、下游坝脚采取加宽反压平台进行处理,能有效地控制坝坡的滑移,阻止裂缝的扩展,由此坝体得以填筑至最终设计高程。竣工后对坝体的持续监测,验证了反压平台法治理坝体滑坡是非常有效的。

The earth-dam is difficult to construct on the soft＇foundation, the different degrees of landslide may be occurred in the construction of dam body. Though the practical examples of the engineering, when the crack appeared in the upstream and downstream during the construction and filling of dam body on the soft foundation, the counter I-essure platform should be widened at the dam foots of upstream and downstream, bywhich it can effectively control the sliding of the dam slope, prevent crack extension, the dam can be filled up to the final design elevation. By continuous monitorifig of dam body after the completion, it is also proved that the method of the counter pressure platform is very effective to treat the dam landslide.