[1]贾平.冻结法在顶管工作井外围土体加固封水中的应用[J].中国给水排水,2021,37(2):94-98.
JIA Ping.Application of Freezing Method in the Consolidation of Soil Surrounding the Pipe Jacking Well[J].China Water & Wastewater,2021,37(2):94-98.
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JIA Ping.Application of Freezing Method in the Consolidation of Soil Surrounding the Pipe Jacking Well[J].China Water & Wastewater,2021,37(2):94-98.
冻结法在顶管工作井外围土体加固封水中的应用
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第37卷
期数:
2021年第2期
页码:
94-98
栏目:
出版日期:
2021-01-17
- Title:
- Application of Freezing Method in the Consolidation of Soil Surrounding the Pipe Jacking Well
- 摘要:
- 超深沉井；冻结法；止水帷幕
- Abstract:
- At present, the combination of bored pile and multi-layer high-pressure jet grouting pile is generally used to consolidate the soil of ultra-deep caisson wall in China. In the face of special and complex geological conditions such as weak soil, large pore ratio and high water content, the quality of jet grouting pile cannot be guaranteed. When the sealing effect of single ring curtain wall de-watering is poor, the freezing method is used to freeze the soil surrounding the open caisson wall to form a composite ring curtain wall de-watering, which ensures the complete isolation of the groundwater in the open caisson construction area from the surrounding outside, and is expected to solve the problem of quicksand gushing during the process of pipe jacking caisson drainage sinking. Taking silty silt confined water formation as an example, the freezing method is used to consolidate and seal the soil surrounding pipe jacking working well, and the technologies of scheme design, freezing construction and frost heaving and thawing settlement control are introduced. The application of freezing method in caisson construction has certain reference significance to control groundwater and consolidate soil layer by drainage method in similar open caisson projects in the future.
更新日期/Last Update:
2021-01-17