基于降雨过程理论分析的初期雨水调蓄容积计算

以我国现行规范的极限强度理论为基础,从雨水管道设计流量公式出发,考虑到初期降雨强度的时间变化,将一场雨划分为两场雨,推求了一场降雨的收集调蓄过程中初期雨水和洁净雨水累积量的变化规律,并给出在某重现期下的计算公式。

Adjustment and Storage Capacity Calculation for Initial Rainwater Based on Theoretical Analysis of Rain Fall Process

On the basis of the current standard of ultimate strength theory in China and the formula of drainage design flow,the temporal variation of initial rainfall intensity was considered,and a shell of rain was divided into two spell of rain.A formual in some recurrence period was given by deducing the rule of initial rainwater cumulant and cleaning rain cumulant during a spell of rain fall process.