Abstract River water level prediction (WLP) plays an important role in flood control, navigation, and supply. In this study, a WaveNet-based convolutional neural network (WCNN) with lightweight structure good parallelism was developed to improve the accuracy time effectiveness of WLP. It applied predict 1/2/3 days ahead levels at Waizhou gauging station Ganjiang (GR) China, it compared two recurrent networks (long short-term memory (LSTM) gated unit (GRU)). The results showed that WCNN model...

Abstract The assumption of the equilibrium state gravel surfaces in flume experiments under feeding or recirculating conditions is generally justified by three criteria based on sediment transport, slopes, and bed features. When these parameters become stable, an experiment expected to reach equilibrium. This state, however, a one‐dimensional model, Exner equation, which may not truly reflect system considering complex flow processes. In this paper, evolutionary process surface investigated...

Structure function analyses are increasingly used to investigate spatial correlation patterns of river bed roughness. However, traditional structure remain mostly qualitative as the statistical significance has not been explicitly addressed. This paper proposes a methodology for analysis 2D second-order functions based on testing. Using data from flume experiments with gravel beds, method create surrogate rough beds is proposed. The subsequently carry out Monte-Carlo simulations which in...

Wu, T. and Qin, J., 2020. Influence of flow sediment transport processes on sedimentation in groyne fields. In: Malvárez, G. Navas, F. (eds.), Global Coastal Issues Journal Research, Special Issue No. 95, pp. 304-308. Coconut Creek (Florida), ISSN 0749-0208.Groynes have been widely used to prevent coastal erosion worldwide. Various depositional patterns found fields, which are affected by processes. For a field dominated single large gyre being mainly transported the form suspended load,...

Abstract The spatial arrangement of grains in gravel‐bed rivers significantly influences sediment transport, flow resistance, and ecological conditions. Inferring historical information from grain arrangements has garnered considerable interest among researchers. This study presents a robust feasible method for such inference, focusing on quantitative approaches to estimate through inclination analysis. Two parameters based analysis are proposed estimating arrangement. Quantitative...

In order to assess the durability of concrete structures reinforced by different types steel in aggressive environments, galvanic corrosion mill-scaled carbon was investigated when it connected AISI 304 stainless characterized various cathode/anode surface area ratios (As:Ac) chloride-contaminated mortars. The potential and current density coupling were measured, state inspected after 1,450 days. results indicated that slightly positively shifted steel. High As:Ac promoted passivation...

The periodicities of the annual maximum and minimum runoff time series at Datong hydrological station in Yangtze River（P. R. China）were analyzed, according to data from 1950 1995. can be used estimate water discharges into sea River a certain degree as there is no branch inflow Estuary. Two independent techniques were analysis series: conventional periodogram entropy spectral analysis. results reveal that periods obtained are related rainfall characteristics great extent. long more than 10...

The physical model of Jiaogang Ship Lock is established. Through test, the flow condition in lock chamber and approach channel studied. results indicate when upstream water level keeps high difference between downstream less than 0.5 meter, main oscillates during spring tide flux reflux flood year. When upper 0.96 m year, from to smooth. greater lower level, sluice gate hoist tidal range 0.3m 0.4m reflux. Under critical conditions, can be hoisted safely.

Abstract Mendicino and Colosimo (2019, https://doi.org/10.1029/2019WR024819 ) addressed the evaluation of flow resistance in natural gravel‐bed rivers proposed several new equations to estimate coefficients by adding Froude number Shields sediment mobility parameter conventional equations. The were found better reproduce velocity comparison However, apparent improved performance these is due spurious correlation. incorrectly calculated coefficient substituting measured into equations, which...

A physical model of Jiaogang Ship Lock is established in the paper. Through test, force triangular gate under condition opening studied. The result shows when upper water level high control and absolute value upper-lower tidal range less than 0.5m during spring tide flux reflux flood season Yangtze River year, ship lock can be opened. When medium control, to open should 0.4m. And low critical also 0.5m.

Particles with a single-size gradation were widely used to investigate the erosion behavior of steel, which can not well simulate service environment steel components in practice. For simulating hydraulic engineering, carbon was eroded sand and mud mixed solutions present study. The investigated by electrochemical test weight loss measurement solutions, surface morphology observed. Coarse sand, fine median particle size (D50) 0.775 mm, 0.270 0.012 mm adopted, respectively. results suggested...

Aiming at mathematical model of flow and sediment under multi-control boundary conditions in front dams hydropower station, a step-by-step solution method is proposed this paper. In the first step, influence constraints such as water intake power station not considered. The level control condition exit section given according to scheduling mode discharge by inlet boundary. second upstream step obtained, defined downstream condition. used perform simulation analysis on Dashixia Reservoir....

Abstract Cao et al. (2019, https://doi.org/10.1029/2018WR023568 ) proposed a modified particle filter‐based data assimilation method with local weighting procedure (MPFDA‐LW) for two‐dimensional hydrodynamic model (HydroM2D) in dam‐break flood simulation. The MPFDA‐LW intends to take into account the spatial‐temporal variability of Manning coefficient improve performances HydroM2D model. Although correctly pointed out that may spatially and temporally vary during flooding process, approach...