城市深隧排水系统关键水力学问题研究进展

Research progress on key hydraulic issues of urban deep tunnel drainage system

深隧排水系统作为一种灰色海绵技术措施,在解决大城市内涝灾害和水资源短缺、防止外溢污染等方面具有显著的效果.但在前期结构设计及后期调度运行过程中,存在一系列关键水力学技术难题亟待解决,包括不同类型竖井的泄流能力计算、主隧道内的瞬变流与涌浪问题以及系统快速充水过程中的气爆现象.在归纳分析国内外深隧排水系统典型案例的基础上,对相关水科学技术问题进行全面回顾和评述,并结合研究现状做出展望,为城市深隧排水系统结构的科学设计和合理应用提供科学依据和参考.

As a grey sponge technical measure^the deep tunnel drainage system has significant effects in solving the waterlogging disaster,water resource shortage and preventing overflow pollution in large cities.However,there are a series of key hydraulic technical problems that need to be solved urgently in the process of structural design and scheduling operation including the calculation of discharge capacity for different drop shafts»the transient flow and surges in main tunnel,and the geyser events during the rapidly filling process.In this paper,the relevant water science and technology problems of deep tunnel drainage systems are comprehensively reviewed and commented based on the summarization and analyzation of the typical cases of deep tunnel engineering at home and abroad.Finally,the future research prospection of related key hydraulic issues are prospected.This research will provide a certain reference for the scientific design and reasonable application of urban deep tunnel drainage structure.