上饶港鄱阳港区角子口作业区堤防加固方案优化

Optimization of dike reinforcement scheme in Jiaokou operation area of Poyang port area of Shangraokou port

码头建设涉及水陆两域,受水文地质、衔接方式、施工方案等因素影响,不可避免的会增加堤身荷载,对堤防产生不同程度的扰动、破坏,如何确定合理的堤防加固方案以降低工程建设的不利影响成为关键。本文以实际案例,采用极限平衡法和有限单元法,分析工程前后堤坡、渗流稳定,对不同类型堤防加固技术进行比选优化,提出了高喷桩+水泥土搅拌桩综合加固方案。分析结果表明:不同类型加固技术的联合运用,在节省工程投资的同时,可有效解决堤坡和渗流稳定问题,保证码头和堤防安全。

The construction of wharf involves both land and water area and is affected by hydro-geology,join modes,construction scheme and other factors.It is inevitably increasing the load of dike and causing varying degrees of disturbance and damage to the dike.How to construct a reasonable dike reinforcement scheme to reduce the adverse impact would be the key in an wharf engineering.Based on the real case,this paper analyzes the stability of embankment slope and seepage before and after the project by employing limit equilibrium method and finite element method.Comparisons and optimization of different dike reinforcement techniques are conducted and finally a comprehensive reinforcement scheme of high pressure grouting pile and cement mixing pile is put forward.The results show that the combination and application of various types of reinforcement techniques can not only save the project investment,but also effectively solve the problem of slope and seepage stability ensuring the safety of wharf and dike.