摘要
为有效解决新孟河疏浚拓宽工程土方作业量大、工期紧以及前期水路不通运渣难等施工困难,针对传统河道治理常采用的挖泥船水下开挖作业带来的施工效率低、开挖质量难以保证、超挖欠挖现象频繁出现等缺点,基于新孟河工程,根据现场施工工况、场地部署、水文特征以及工区道路,模拟公路工程中常用的半幅施工技术,对河道疏浚和拓宽采取半幅导流、半幅干作业,通过基坑转换实现交替作业,最大程度减少水下开挖量,提高施工效率,节约施工成本。并在此基础上,探究老河道疏浚拓宽时河道半幅施工的技术适用性与经济合理性,为以后类似工程提供技术指导。
In order to effectively solve the construction difficulties of the dredging and widening project of Xinmeng River,such as large earthwork volume,tight construction period and difficult slag transportation in the early stage,combined with the disadvantages of low construction efficiency,difficult to ensure excavation quality and frequent over excavation and under excavation caused by the underwater excavation operation of dredgers often used in traditional river regulation,based on the Xinmeng River project,according to the site construction conditions,site deployment,hydrological characteristics and roads in the work area,simulate the half width construction technology commonly used in highway engineering,adopt half width diversion and half width dry operation for river dredging and widening,and realize alternative operation through foundation pit conversion,so as to minimize underwater excavation,improve construction efficiency and save construction cost.On this basis,the technical applicability and economic rationality of half width construction of old river dredging and widening are explored,so as to provide technical guidance for similar projects in the future.
作者
汪建
WANG Jian(Changzhou Branch,China Anneng Group Second Engineering Bureau Co.,Ltd.,Changzhou 213181,Jiangsu,China)
出处
《水利水电技术（中英文）》
北大核心
2021年第S02期21-24,共4页
Water Resources and Hydropower Engineering
关键词
半幅施工
导流
河道疏浚
half width construction
diversion
river dredging
作者简介
汪建(1985-),男,工程师,硕士,主要从事水利水电施工技术、房屋建筑施工技术等研究。E-mail:515751243@qq.com
