短期强降雨区域排水系统排水能力优化模型设计

Design of Drainage Capacity Optimization Model for Short-term Heavy Rainfall Area Drainage System

针对当前短期强降雨区域排水系统存在计算精度较差、排水系统工程造价较高的问题。为此,提出一种基于极限强度的短期强降雨区域排水系统排水能力优化模型设计方法。该方法通过对短期强降雨区域排水系统排水能力的不足之处进行分析,并结合极限强度理论对短期强降雨区域排水系统截流管管径的地面集流时间、设计降雨历时以及设计流量等参数进行确定,在此基础上通过对短期强降雨区域排水系统管段汇水面积进行单元调节,最后利用管井溢流对短期强降雨区域排水系统管网排水能力进行量化,由此完成短期强降雨区域排水系统排水能力优化模型设计。实验结果表明,所提方法能够有效提高排水系统的排水能力,同时具有较强的实际应用价值。

Aiming at the problems of poor calculation accuracy and high cost of drainage system in the short term heavy rainfall area drainage system. To solve this problem, a design method of drainage capacity optimization model for short term heavy rainfall area drainage system based on ultimate strength is proposed. The method by analyzing the shortcomings of the short-term strong rainfall area drainage ability, combined with the theory of ultimate strength to determine the closure of ground collecting time, rainfall duration and design parameters such as design flow pipe diameter on the short-term heavy rainfall area drainage system, on the basis of the unit to adjust short-term heavy rainfall regional drainage tube a catchment area, the wells overflow to quantify the drainage capacity of short-term heavy rainfall drainage system, thus completing the short-term heavy rainfall area drainage ability optimization model design. The experimental results show that the proposed method can effectively improve the drainage capacity of drainage system, and has strong practical application value.