Layered water-taking water-temperature observation device of reservoir stop log gate and observation method of same

Abstract

The invention discloses a layered water-taking water-temperature observation device of a reservoir stop log gate and an observation method of the same, which belong to the technical field of water resources and hydropower engineering. The device comprises a water inlet, wherein a trash rack, a stop log gate and an electricity-generation water inlet horn mouth section are disposed at the water inlet, the trash rack is located in front of the water inlet, the stop log gate is located in the water inlet, the electricity-generation water inlet horn mouth section is located on the downstream side of the water inlet, a before-dam water temperature and water level observation device is disposed on the upstream side of the water inlet, and an after-dam electricity-generation tail water water-temperature observation device is disposed on the downstream side. In the technical scheme, the stop log gate is disposed at the water inlet to realize layered water taking, reservoir surface water enters a water taking duct from the top of the stop log gate of the water inlet, and an opening height of the stop log gate is controlled according to changes of a reservoir water level, so that the water taking from the reservoir surface and electricity generation can be ensured, lower-layer water in a reservoir is avoided from flowing towards the downstream direction and generating harmful influences to a downstream ecological environment, unit independent water supply is realized, and running operations become flexible.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to a monitoring technology of water temperature change law under the layered water intake mode of the stacked beam door in a high dam reservoir, in particular to a water temperature observation device and the observation device for the layered water intake of the stacked beam door in the reservoir method. Background technique [0002] At present, the high-dam reservoirs in my country's water conservancy and hydropower projects have gradually adopted the method of taking water from the surface layer of the reservoir to generate electricity or divert water by layered water intake through stacked gates, in order to slow down the release of low-temperature water from the original water inlet, resulting in a drop in the water temperature of the downstream river. Changes in the natural water temperature distribution of the original river channel have adve...

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Problems solved by technology

[0003] But so far, domestically, there has been little systematic research on the observation of water temperature cumulative effect of stratified water intake for water conservancy and hydropower projects, and there is a lack of relevant guidelines or specifications for the technical methods and requirements for the observation of water temperature cumulative effect of stacked gate stratified water intake The effective unification of the reservoir and the downstream overall water temperature change law observation results generally have systematic, representative, and unreliable problems. It is necessary to improve and optimize the design, construction, and operation scheduling of the layered water intake measures for follow-up projects. The reference significance of such work is not great, and the reference significance for improving the mathematical model research of river water temperature change law in our country, the improvement of empirical formula and the development of calculation software is even less.

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