Automatic variable fishway by water level sensed

A technology for water level monitoring and fish passages, which can be applied in water conservancy projects, climate change adaptation, marine engineering, etc., and can solve problems such as number reduction

A technology for water level monitoring and fish passages, which can be applied in water conservancy projects, climate change adaptation, marine engineering, etc., and can solve problems such as number reduction

CN1863970AInactive Publication Date: 2006-11-15ε―„ε―…θˆ’
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  • Automatic variable fishway by water level sensed
  • Automatic variable fishway by water level sensed
  • Automatic variable fishway by water level sensed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0033] The automatic variable fishway realized by water level monitoring of the present invention will be described below in conjunction with the accompanying drawings.

[0034] figure 1 is an illustration of the automatic variable fishway realized by water level monitoring according to the first embodiment of the present invention, figure 2 It is a structural schematic diagram of the automatic variable fishway realized by water level monitoring according to the first embodiment of the present invention, image 3 is along figure 2 The profile obtained from the A-A line in the middle, Figure 4 It is a structural schematic diagram of the automatic variable fishway realized by water level monitoring according to the second embodiment of the present invention, Figure 5 It is a structural schematic diagram of the automatic variable fi...

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Abstract

The present invention relates to an automatic variable fishway. More particularly, an automatic variable fishway by water level sensed of the invention can automatically vary its height to uniformly maintain the quantity of water drained through the fishway so that migratory animals can freely move through the fishway to upstream or downstream of a dam regardless of the quantity of storage water. The automatic variable fishway by water level sensed of the invention is installed in a bank for storing a predetermined quantity of water to allow migration of fish, and comprises: an underwater gate 170 for being erected or laid by a drive means which is operative in response to a signal from a water level detecting sensor 50 for detecting the level of storage water; and a fishway plate 110 connected with a top of the underwater gate 170 to form a migration path for fish.

Description

technical field [0001] The invention relates to an automatic variable fishway. It particularly relates to an automatic variable fishway realized by monitoring the water level, which can automatically change the height so that the amount of water discharged through the fishway remains uniform, so that migrating animals can freely pass through the fishway upstream and enter the dam Or downstream from the dam without being affected by the amount of stored water. Background technique [0002] There are usually dikes and sluices in some areas of some rivers, which are used to selectively open or close the sluices to adjust the amount of stored water according to the water level. [0003] However, dikes or dams installed at the mouth of rivers may close the migration passages of migratory animals such as sweetfish, eels, and horseshoe crabs, which can live in the sea as well as in the river, leading to the extinction of the corresponding species. In addition, fish that migrate l...

Claims

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Application Information

Patent Timeline
15 Nov 2006
Publication
CN1863970A
IPC
E02B7/20; E02B8/08
CPC
Y02A40/60; E02B7/205; E02B7/38; E02B7/44; E02B8/08
Inventors
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