湖积软土地基的处理方法

REINFORCEMENT METHOD OF LACUSTRINE SOFT SOIL FOUNDATION

软土地基处理方法很多,不同方法的处理效果、费用、工期相差悬殊,往往不能兼顾。结合排水板(排水砂井)的逐级加荷法费用省、效果好,但工期较长。武山铜矿新尾矿库堆石坝施工中使用较大的单层荷载,以湖积软土地基孔隙水压力测试为主,结合其他测试方法控制堆载进度,既保证了地基稳定性,又使工期较短,达到了兼顾地基处理效果、工期和费用的目的,可供类似工程借鉴。

There are many engineering methods to reinforce soft soil foundation. For different methods, the effect, cost and construction period may be very different, and it is difficult to consider all the aspects well. The step-loading method combined with draining-board has advantages of low cost and good result to soft soils, but the construction period is quite long. In the engineering of rockfill dam for new tailing storage of Wushan copper-mine, a large single layer loading method was used to reinforce the lacustrine soft soil foundation. The data of pore water pressure of foundation together with other parameters were used to control the loading speed. The stability of foundation was kept and the construction period was shortened. With the presented method, the cost, effect and construction period can be well considered simultaneously.