Culvert and horizontal pipes and spillway with hatch control need management of person specially assigned when flood is discharged.
涵、卧管和有闸门控制的溢洪道，在泄洪运行时需要专人管理；
The text introduces the process control of culvert construction to ensure engineering quality.
介绍了涵洞施工的工序控制，以确保涵洞工程质量。
The paper analyzes the factors causing the cracks happened during highway culvert pipe precasting, and brings forward the control measures accordingly.
分析了公路涵管预制裂缝产生的因素，提出了相关的控制措施。
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