WUWei,ZHOUChen,WUHao,et al.Design Optimization of a Water Intake Project in Huaihe River Basin[J].China Water & Wastewater,2022,38(4):82-87.
Design Optimization of a Water Intake Project in Huaihe River Basin
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第4期
Page:
82-87
Column:
Date of publication:
2022-02-17
- Keywords:
- intake head; pipe jacking; dike settlement; stratum loss; PECK empirical method
- Abstract:
- The total scale of urban surface water plant and supporting pipe network project in Yingshang County is 18×104 m3/d. The water intake project includes intake head, water source plant, pumping house and two DN1 400 steel pipes water diversion pipelines. The site selection and scheme of the project were optimized according to hydrology and geological data. The selection of shore-type water intake head and caisson construction in dry season avoided underwater excavation in the beaches, reduced the construction period, saved the construction cost and reduced the construction risk. The pumping house is dike pump house which is easy to manage. It was constructed by double?cell caisson method, and a row of high?pressure jet grouting piles were arranged around the caisson as isolation piles to reduce the impact of caisson sinking on the dike. In the project, the water diversion pipeline crossed the dike by using pipe jacking method. However, the construction would inevitably cause stratum loss and settlement of the dike. Therefore, the settlement of the dike was estimated by PECK empirical method, and the soil disturbed by pipe jacking was reinforced again by high-pressure swing jet grouting. At present, the project has successfully delivered water and runs well.
Last Update:
2022-02-17