System for contrast observation of water temperatures on two sides of preposed retaining wall body of reservoir

Abstract

The invention discloses a system for contrast observation of water temperatures on two sides of a preposed retaining wall body of a reservoir. The system comprises the retaining wall body positioned on the upstream side of the water inlet of the reservoir, the retaining wall body is vertically arranged on a retaining wall foundation, vertically perforated steel pipes are respectively arranged on the two sides of the retaining wall body, and a plurality of water temperature on-line observation probes are arranged in the vertically perforated steel pipes. The vertically perforated steel pipes are respectively installed on the upstream face and the downstream face of the retaining wall body through steel pipe fixing supports. The system allows observation of warming effect of the preposed retaining wall of a reservoir, ensures that systematicness, representative and reliability of integral observation and research accomplishment over reservoir and downstream water temperature changing trends and is of great importance to effective warming effect observation of a preposed retaining wall of the reservoir, improving observation technology and accomplishment over reservoir water temperature changing trend, improving design, and construction and operation scheduling of layered water taking means of a preposed retaining wall in future hydraulic and hydroelectric engineering.

Description

technical field [0001] The invention belongs to the technical field of hydrological observation of water conservancy and hydropower projects, and in particular relates to a water temperature comparison observation system on both sides of a retaining wall in front of a reservoir. Background technique [0002] The hydrological situation and water body environment of the reservoir area have been changed after the water conservancy and hydropower projects and other hydraulic constructions have been built into the reservoir. Considering the stratified water intake measures to take the water body in the high temperature area of ​​the surface layer of the reservoir, most of the discharge flow of the reservoir comes from the water body in the deep water low temperature area of ​​the reservoir area, and the low temperature water discharge of the reservoir will have a long-term and far-reaching impact on the downstream river water ecosystem. [0003] At present, my country's water con...

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Problems solved by technology

[0003] At present, my country's water conservancy and hydropower projects usually adopt the method of setting a front retaining wall in front of the water inlet to use the surface water of the reservoir to generate electricity or divert water, so as to slow down the impact of the low-temperature water discharged from the original reservoir inlet on the downstream river water ecosystem, which has been gradually popularized. However, the observation work of the warming effect system of the front retaining wall in water conservancy and hydropower projects is still in a blank stage, and the technical methods and requirements for the observation work of the warming effect system of the front retaining wall lack the effective unity of relevant guidelines or specifications, resulting in the reservoir and the downstream as a whole The observation of water temperature change law and the quality of research results generally have problems such as systematicness, representativeness, and low reliability. It is a reference for improving and optimizing the design, construction, and operation scheduling of water intake measures for the front retaining wall in subsequent water conservancy and hydropower projects. It is of little significance, and it is of little significance to improve the research on the mathematical model of the change law of river water temperature in our country, the improvement of empirical formulas and the development of calculation software, and to promote the scientific and technological progress of the industry.

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