大荷载矿石堆场中深厚吹填软土的地基处理及后评价  

Foundation treatment and post evaluation of deep hydraulic fill soft soil in heavy load ore storage yards

作　　者：刘晓鹏[1] 孙新鹏 任增金[1] 李业伟 LIU Xiaopeng;SUN Xinpeng;REN Zengjin;LI Yewei(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)

机构地区：[1]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2024年第3期178-183,共6页Port & Waterway Engineering

摘　　要：吹填淤泥形成陆域是资源利用和环境保护方面的优质解决方案,但当前吹填软土形成陆域的工程中,多数为荷载较小的堆场、工业园区道路、绿化区等。以青岛港董家口港区矿石码头工程20万吨级散货泊位后方预留堆场区的地基处理工程为例,对该工程的设计、施工及使用后6年的情况进行详细阐述,从多个角度展示深厚吹填软土的演变情况,详细介绍土体含水量、孔隙比、抗剪强度等指标在不同时期的变化,对比施工期沉降计算和监测数据,分析不同时期抗剪强度指标下矿石堆存的高度。结果表明,在大荷载矿石堆场中采用吹填软土形成陆域是可行的,通过合理的地基处理方式和有序增加堆存荷载,最终可使矿石堆场达到满载堆存。The reclamation of dredging silt to form land areas is a high-quality solution for resource utilization and environmental protection.However,in the construction of land areas formed by reclamation of soft soil,most of the projects are small load storage yards,industrial park roads,and green areas,etc.Taking the foundation treatment project of the reserved storage area behind the 200000-ton bulk cargo berth of the Qingdao Port Dongjiakou Port area ore terminal project as an example,we expound the design,construction and 6 years after use of the project in detail,and show the evolution of deep hydraulic fill soft soil during the construction and 6 years after use from multiple aspects.We carry out a detailed introduction to the changes in soil moisture content,pore ratio,shear strength and other indicators during different periods,compare settlement calculation and monitoring data during construction,and analyze the height of ore storage under different shear strength indicators during different periods.The results show that it is feasible to use hydraulic fill soft soil to form land areas in high load ore storage yards.Through reasonable foundation treatment methods and orderly increase of storage loads,the ore storage yard can ultimately achieve full load storage.

关 键 词：深厚吹填软土 土体含水量 孔隙比 抗剪强度 沉降计算 矿石堆场高度 

分 类 号：U652.7[交通运输工程—港口、海岸及近海工程]