Effects of tidal bore on hydraulic transients in low-head pressurized water conveyance systems DOI Open Access
Jinhao Liu, Jianzhong Zhu, Wei He

et al.

Journal of Physics Conference Series, Journal Year: 2024, Volume and Issue: 2854(1), P. 012070 - 012070

Published: Oct. 1, 2024

Abstract In low-head pressurized water conveyance systems affected by tidal bore, the influence of bore on stability system is significant. This study focuses a pumping station located Qiantang River to investigate impact under extreme conditions hydraulic transients in systems. Tidal height and maximum velocity are considered as key parameters, their effects modelled transient analysis. Two operational scenarios, including normal operation pumps shutdown, simulated. The results indicate that, during pump operation, increases lead greater fluctuations surge tank level, flow fluctuations, pressure pulsations pipeline. scenarios involving shutdown gates closure, result larger level. Additionally, since closed when have minimal rates. Therefore, middle section pipeline primarily controlled rate. When relatively high, occurs rapidly, whereas increase slower. introduces method for incorporating into calculations, providing valuable insights project design construction. It serves reference analysis similar bore.

Language: Английский

A GA-FGM-RTA combined model for predicting seawall settlement in under insufficient data volume DOI
Peng Qin, Chunmei Cheng,

Huaizhi Su

et al.

Soft Computing, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Language: Английский

Citations

0
Current status of coastal blue carbon assessment: Theory, methods, and carbon sequestration pathways DOI
Jilong Wang, Guirui Yu,

Hu Ding

et al.

Science China Earth Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Language: Английский

Citations

0
Multi-Point Seawall Settlement Prediction with Limited Data Volume Using an Improved Fractional-Order Grey Model DOI Creative Commons
Peng Qin, Chunmei Cheng, Zhenzhu Meng

et al.

Fractal and Fractional, Journal Year: 2024, Volume and Issue: 8(7), P. 423 - 423

Published: July 19, 2024

Settlement prediction based on monitoring data holds significant importance for engineering maintenance of seawalls. In practical engineering, the volume collected is often limited due to restrictions devices and budgets. Previous studies have applied fractional-order grey model time series under situation volume. However, performance easily affected by inappropriate settings fractional order. Also, cannot make dynamic predictions characteristic fixed step size. To solve above problems, in this paper, genetic algorithm with enhanced search capabilities was employed premature convergence problem. Additionally, problem associated size, real-time tracing introduced conduct equal-dimensionally recursive calculation. The proposed validated using four points at Haiyan seawall Zhejiang province, China. then compared those GM(1,1), integer-order fractal theory model. Results indicate that significantly improves other models.

Language: Английский

Citations

1
Effects of tidal bore on hydraulic transients in low-head pressurized water conveyance systems DOI Open Access
Jinhao Liu, Jianzhong Zhu, Wei He

et al.

Journal of Physics Conference Series, Journal Year: 2024, Volume and Issue: 2854(1), P. 012070 - 012070

Published: Oct. 1, 2024

Abstract In low-head pressurized water conveyance systems affected by tidal bore, the influence of bore on stability system is significant. This study focuses a pumping station located Qiantang River to investigate impact under extreme conditions hydraulic transients in systems. Tidal height and maximum velocity are considered as key parameters, their effects modelled transient analysis. Two operational scenarios, including normal operation pumps shutdown, simulated. The results indicate that, during pump operation, increases lead greater fluctuations surge tank level, flow fluctuations, pressure pulsations pipeline. scenarios involving shutdown gates closure, result larger level. Additionally, since closed when have minimal rates. Therefore, middle section pipeline primarily controlled rate. When relatively high, occurs rapidly, whereas increase slower. introduces method for incorporating into calculations, providing valuable insights project design construction. It serves reference analysis similar bore.

Language: Английский

Citations

0