XIONG Wan-li,HUANG Fan-yuan,CAO Jin,et al.Calculation of Various Well Sizes under Different Outflow Modes in Municipal Engineering[J].China Water & Wastewater,2021,37(22 22):79-83.
Calculation of Various Well Sizes under Different Outflow Modes in Municipal Engineering
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
22 22
Page:
79-83
Column:
Date of publication:
2021-11-17
- Abstract:
- In municipal engineering, water distribution well, falling well and other structures should try to avoid water hitting the well wall, and it is one of the criteria to determine the minimum size of the well. The range of the water flow in the well is related to the outflow mode and motion of the water flow. The requirements for the size of the well under free overflow and pressurized outflow were analyzed. For free overflow, the horizontal distance of the water drop was calculated according to the practical weir surface design formula. For pressurized outflow, the water outlet velocity was calculated according to the energy equation, and the horizontal distance of the water flow was calculated by the horizontal throwing motion formula. For a baffle-drop shaft, the empirical formula related only to the design flow rate that was derived according to the recommended value of the relevant tests, and the shaft size was determined from the two aspects of meeting the ventilation requirements and avoiding the impact of water flow on the shaft wall.
Last Update:
2021-11-17