石岩南清水隧洞折板式竖井过流能力及消能效果研究

Research on Overfiow Capacity and Energy Dissipation Effect of Folded Plate Shaft of Shiyan South Clear Water Tunnel

随着城市建设步伐的加快,建成区污染负荷的加重,对于上游为生态山区的城市建成区,应采取措施剥离山区清洁雨水,绕排建成区,实现清污分流。折板式消能竖井具有适应性强、消能效果好的特点,在山区短距离、大高差输水工程中的应用有着广阔前景,但在实际应用中可能存在过流能力不足、水流震荡、消能不充分、排气不畅等问题,目前通过水力学理论和经验公式对以上问题进行研究还存在一定的困难,因此,以石岩南清水隧洞折板式竖井为例,通过物理模型试验对折板式消能竖井的过流能力和消能效果进行研究。

With the acceleration of urban construction, pollution load in built-up areas is increasing. For urban built-up areas in the upstream ecological mountainous area, measures should be taken to strip clean rainwater from the mountainous area and bypass the built-up area so as to realize pollution diversion. Folding plate type energy dissipation shaft has the characteristics of strong adaptability and good energy dissipation effect, and has broad prospects in the application of short distance, large height difference water conveyance projects in mountainous areas. However, in practical application, there may be problems such as insufficient overflow capacity, water flow oscillation, insufficient energy dissipation and blocked exhaust. At present, it is still difficult to study the above problems through hydraulic theory and empirical formula. Therefore, taking folded-plate shaft of Shiyan South Clear Water Tunnel as an example, this paper studies the flow capacity and energy dissipation effect of foldedplate energy dissipation shaft through physical model test.