A method for simulation and optimization of river regulation scheme

Abstract

The invention belongs to the technical field of emergency disaster prevention, and in particular relates to a method for simulating and optimizing a river regulation plan. ; ④ The optimization scheme of the river regulation project is determined. The present invention constructs an integrated multi-factor coupled river regulation scheme simulation optimization method, which is suitable for flood risk assessment in research areas with complex topography and flood control engineering systems, and can quickly and accurately simulate the water level and flood evolution process along the river under different regulation schemes , Flood propagation time, changes in water level and flow, possible embankment submersion risks, etc., and according to different river improvement schemes, adjust the corresponding terrain conditions and model calculation parameters, and compare and analyze the changes in river hydrology and flood control risks under different working conditions Disaster reduction effect, determine the optimization direction of the river regulation plan.

Description

technical field [0001] The invention belongs to the technical field of emergency disaster prevention, and in particular relates to a method for simulating and optimizing a river regulation scheme. Background technique [0002] Affected by climate change and high-intensity human activities, the occurrence time, frequency, magnitude, process, and combined encounters of floods in large rivers and rivers will all have significant changes. The hydrodynamic characteristics have produced complex influences. Flood disasters occur frequently, cause heavy losses, and are difficult to prevent and control. In order to further prevent the occurrence of disasters and dangerous situations caused by abnormal sudden changes in the hydrological situation of large rivers, different degrees of regulation and control have been carried out during the development of the river. , construction of spur dams, slope protection and bank protection, etc., has basically formed a relatively complete flood...

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Problems solved by technology

At present, the technical difficulties and application limitations of the simulation and optimization methods for river regulation schemes are mainly manifested in the following aspects: ① The length of the researched river is relatively short, and most of them are to analyze the impact of river regulation on local river sections. Interference changes of flood water regime in long-distance river sections; ②Simulation models for river regulation schemes are mostly one-dimensional or two-dimensional hydrodynamic numerical models or relatively simple one-dimensional coupled hydrodynamic models. The model affected by disturbance factors such as flood storage areas and tributaries has few research results, and the calculation accuracy needs to be further improved; ③The evaluation method of river regulation effect is relatively simple, mostly based on the flood evolution process, flood propagation time, water surface line along the course, etc. Analysis of the changes of one or several factors lacks a comprehensive and systematic evaluation method for the change law of river flood propagation

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