Vertical water temperature mixing inversion effect observation method and apparatus in front of reservoir dam

Abstract

The invention discloses a vertical water temperature mixing inversion effect observation method and apparatus in front of a reservoir dam. The method comprises: observation vertical line arrangement, vertical line observation point arrangement, and observation work period arrangement of vertical water temperature mixing inversion dynamic changing in front of a reservoir dam in a water temperature layering mode are put forward according to actual vertical water temperature structure mixing inversion dynamic changes of the water domain in front of reservoir dam in a water temperature layering mode in different seasons. Besides, the observation apparatus includes a floating ball, a probe chain, and a plurality of on-line water temperature and water level observation probes arranged on the probe chain. The probe chain is connected to the bottom of the floating ball; and a balance weight is arranged at the bottom of the probe chain. With the observation method and apparatus, the observation working technique level and result quality of the water temperature change and distribution rule system of water bodies like a river or a dam are improved; defects in prior art are overcome; and the mathematic model study, empirical formula improvement and computation software development and research work level for the water temperature changing rule of a river or a dam are further enhanced.

Description

Technical field [0001] The invention belongs to the technical field of hydrological observation of water conservancy and hydropower engineering, and in particular relates to a method and device for observing the effect of vertical water temperature mixing in front of a reservoir dam. Background technique [0002] After the completion of water conservancy and hydropower projects and other hydraulic structures, the hydrological situation and water environment of the reservoir area have been changed. The reservoir not only regulates the water storage capacity but also stores heat, which may cause stratification of the water temperature in the reservoir area. For water temperature stratified reservoirs, the vertical water temperature structure in front of the dam can generally be divided into three parts: the warm water layer on the reservoir surface, the clinoline layer in the reservoir, and the cold water layer under the reservoir. Most of the water temperature layered reservoirs B...

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Problems solved by technology

[0008] At present, there are few researches on the mechanism of the vertical water temperature structure of the water in front of the dam of water temperature stratified reservoirs in different seasons. , and it is still in a blank stage. The technical methods and requirements for the observation of the vertical water temperature inversion effect in front of the water temperature stratified reservoir dam lack the effective unity of relevant guidelines or specifications, and the quality of the observation results is generally systematic, representative and reliable. It is of little reference significance to improve the mathematical model research on the water temperature change law of rivers and reservoirs in my country, the improvement of empirical formulas and the development of calculation software, and it cannot guide the research work of the environmental impact system of water conservancy and hydropower projects. Scientific development

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