JIA Kai,WU Yong-xin,XU Zhen-bo.Key Technology of Multi-hole and Small-spacing Pipe Jacking Construction in Meilan Airport Drainage Project[J].China Water & Wastewater,2021,37(22 22):113-117.
Key Technology of Multi-hole and Small-spacing Pipe Jacking Construction in Meilan Airport Drainage Project
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
22 22
Page:
113-117
Column:
Date of publication:
2021-11-17
- Abstract:
- Taking the phase Ⅱ expansion off-site drainage project in Haikou Meilan Airport as an example, the construction technology of multi-hole and small-spacing pipe jacking is introduced. In the early stage, the construction sequence was optimized by numerical simulation, and it is concluded that the impact of construction on ground can be effectively reduced when the sequence for three-hole and four-hole pipe jacking is 1-3-2 and 1-3-2-4 respectively. At the same time, the key points of construction, such as the layout of intermediate jacking station and thixotropic slurry grouting of drag reduction are described. In view of the problems such as water seepage and leakage in pipe jacking hole and huge boulder during pipe jacking construction, the handling methods adopted in the project are provided. By adopting the above key construction techniques, the project has achieved good results.
Last Update:
2021-11-17