城市地道排水安全性与经济性的设计探讨

Study on Safety and Economy of Urban Tunnel Drainage System Design

城市地道积水影响百姓通行,甚至危及人们生命财产安全。如何提高城市地道排水设计的安全性和经济性是摆在设计人员面前的一个不可回避的问题。通过调研分析,总结出了地道排水不畅的三方面主要原因及对策。针对地道排水方案设计,探讨了采用暴雨强度公式计算泵站规模与设置调蓄池的计算方法的合理性和经济性。通过案例分析提出合理设置调蓄池并根据降雨统计资料确定调蓄池有效容积的设计方案可充分发挥调蓄池的调峰、缓冲作用,从而有效提高地道排水安全性并降低泵站与出水管路规模。

Urban tunnel waterlogging affects the traffic, even worse endangers personal and property safety. How to improve safety and economy of urban tunnel drainage system design is an unavoidable problem. On the basis of analysis research, three main causes of tunnel poor drainage and related impro- ving measures were summarized. To seek a reliable design plan, the reasonability and economy of rainstorm intensity formula for calculating pump station scale and calculation method for setting up detention tank were studied. The ease study indicated that proper arrangement of detention tank and properly fixing effective volume based on rainfall statistical data ean take full advantage of peak shaving and buffering with detention tank. Sequentially, the safety of urban tunnel drainage can be improved, while the scale of pump station and the water pipeline are reduced.