复杂地貌内河码头陆域形成方案

Scheme of land formation of inland wharf with complex geomorphology

针对广西马江作业区陆域纵深大、地形起伏大的问题,对陆域形成进行三级平台与二级平台的方案研究,采用BIM三维挖填模型选择了弃方最少的三级平台方案;结合工程建设方式、建设投资、运营经济性、施工可行性综合比较分析结果,最终选择了弃方稍多,但投资省、工期短的二级平台方案。结果表明,对于阶梯式布置的陆域,陆域高程、道路纵坡应结合进港道路、码头平台、陆域纵深等综合确定;对于山区丘陵地带河港项目,陆域形成很难做到完全的土石方挖填平衡,弃渣场或者料场的选择往往成为陆域形成方案选择的制约因素,陆域形成方案应尽可能高地减少挖、填土石方量。

Regarding the problems of large depth and undulating terrain in the Majiang operation area of Guangxi,a plan study of the three-level platform and the second-level platform is carried out for the formation of the land area.The three-dimensional BIM excavation and filling method is adopted,and the three-level platform with the least abandonment is selected.Combined with the comprehensive comparative analysis of project construction method,construction investment,operation economy and construction feasibility,a secondary platform plan with slightly more abandonment,but with less investment and shorter construction period is finally selected.The results show that,for the land area with stepped layout,the land area elevation and road longitudinal slope should be comprehensively determined in combination with the access road,wharf platform,and land area depth.For the land formation of the river port project in the mountainous and hilly areas,it is difficult to achieve a complete balance of earth and stone excavation and filling.The plan for the formation of the land area should be as high as possible to reduce the amount of excavation and filling of earth and stone.