长江下游某人工河道软土边坡加固方案对比

依托长江下游某人工河道加固二期工程,通过对工程实际地质条件的考察,结合一期工程中出现的边坡失稳现象,改进了原抗滑桩加固方案的核算方法,找出了原加固方案的不足之处。针对边坡土层中存在软弱层的实际情况,提出了采用水泥搅拌桩加固方案。通过15%、20%和30%三种不同置换率加固方案的计算,找到满足边坡安全稳定需要的加固范围。通过Geo-slope软件计算结果,发现不同置换率下的加固方案通过调节加固范围均可使边坡施工期安全稳定系数达到规范要求的标准。

Comparison of reinforcement schemes for soft soil slope of artificial river in the lower reaches of Yangtze River

Based on the investigation of the actual geological conditions of the project and the slope instability in the first stage of the project, this paper improves the accounting method of the original anti-slide pile reinforcement scheme, and finds out the inadequacies of the original reinforcement scheme of an artificial river in the lower reaches of the Yangtze River.Based on the actual situation of the weak layer in the slope soil layer, the reinforcement scheme of the cement mixing pile is presented.Through the calculation of reinforcement scheme with different replacement rates of 15%, 20% and 30%, we find the safety and stability of the slope of the reinforcement range.According to the calculation results of Geo-slope software, it can be found that the reinforcement scheme under different permutation rate can adjust the reinforcement range to make the safety and stability coefficient of the slope construction period meet the standard requirements.