WANGXiao-nan.Key Technology for Underwater Head Pipe Jacking Machine Construction without a Receiving Well at the Water Intake of the Reservoir[J].China Water & Wastewater,2025,41(12):90-96.
水库取水顶管无接收井水下取机头施工关键技术
- Title:
- Key Technology for Underwater Head Pipe Jacking Machine Construction without a Receiving Well at the Water Intake of the Reservoir
- Keywords:
- pipe jacking; without a receiving well; underwater head; water intake pipeline; deepwater cofferdam construction
- 摘要:
- 深圳某水厂扩能改造工程水库引水管道采用泥水平衡式顶管工艺进行铺设，引水管道取水口位于水库内，若采用常规顶管机接收施工工艺，需要在水库内设置围堰，建造接收竖井，施工工期长，成本高。经充分论证，确定采用顶管无接收井水下取机头施工技术进行施工，通过洞门双密封设计、管端封堵隧道注水、水下土方开挖、水下管道切割、顶管机吊装接收等技术成功实现顶管机接收。顶管无接收井水下取机头施工技术不仅降低了施工成本，缩短了工期，经济效益显著，而且避免了深水区围堰施工多次潜水作业带来的安全风险，提高了施工安全性，可为类似工况的顶管施工提供参考。
- Abstract:
- A water plant expansion and renovation project in Shenzhen uses slurry balanced pipe jacking technology for laying the reservoir’s water intake pipeline. The intake of the water intake pipeline is situated within the reservoir, employing conventional pipe jacking technology that necessitates the construction of a cofferdam and a receiving well, both of which are time-consuming and costly. Following thorough evaluation, the decision was made to employ underwater pipe jacking technology without constructing a receiving well. Successful implementation of this technique involved employing a double- layer sealing design, blocking the pipe ends, tunnel water injection, underwater excavation, pipeline cutting, and the lifting and reception of the pipe jacking machine. Utilizing underwater head pipe jacking technology without a receiving well not only reduced costs and shortened the construction time but also yielded significant economic benefits. It also mitigated safety risks associated with multiple diving operations in deepwater cofferdam construction, enhanced construction safety, and offered technical insights for future pipe jacking projects under similar conditions.
相似文献/References:
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