水下人工冻结板温度场发展规律研究  

Study on the development of temperature field of an underwater artificial freezing plate

作　　者：胡俊[1,2] 卫宏[1] 刘勇[2] 李玉萍[3] 赵联桢[1] 

机构地区：[1]海南大学土木建筑工程学院,海口570228 [2]新加坡国立大学土木与环境工程系,新加坡肯特岗117576 [3]河海大学土木与交通工程学院,南京210098

出　　处：《森林工程》2016年第6期93-98,共6页Forest Engineering

基　　金：国家自然科学基金项目(51368017);海南省重点研发计划科技合作方向项目(ZDYF2016226);海南省科技项目(ZDXM2015117);中国博士后科学基金资助项目(2015M580559)

摘　　要：水下人工冻结板是一种新型的水下清淤、取样和打捞装置。本文运用有限元软件,对水下人工冻结板的温度场发展与分布规律进行数值分析。主要得出:水下人工冻结板所形成的冻土帷幕成板块状,随着冻结时间的增加,板块状冻土帷幕的厚度也在增加;海底1 m范围内的土体受冻结板的降温影响较大,海底以下1 m到2 m的空间里,温度上升很快,海底2 m以下的土体温度几乎不受水下人工冻结板的影响;在现有的降温计划下,不同冻结板长度最终形成的冻土帷幕厚度都约为1 m,路径1上降温过程基本一致。所得结果可为今后类似工程设计提供技术参考依据。Underwater artificial freezing plate is a new type of underwater dredging,salvage and sampling device.This study used finite element software to conduct numerical analysis on the development and distribution of temperature field of underwater artificial freezing plates.The results showed that the frozen soil wall of underwater artificial freezing plate formed into a plate-shape.The thickness of the plate-shape frozen soil wall increased with the freezing time.The effect of cooling on the freezing plate was significant within the 1 m range under seabed of under seabed.The soil temperature went up fast in the range from 1 m to 2 m under seabed and was almost independent of underwater artificial freezing plate below 2 m under seabed.The thickness of frozen soil wall that the freezing plates of different lengths finally formed was all about 1m at the existing cooling rate.The cooling processes was basically consistent on the Path 1.The results of this study can provide technical reference for future similar projects.

关 键 词：水下人工冻结板 冻结法 温度场 数值模拟 

分 类 号：U455[建筑科学—桥梁与隧道工程]