Water-snail eradication method and tank for culvert and sluice and channel water delivery engineering

A technology of culvert gate and channel, which is applied in the field of snail killing and snail sinking tank of culvert gate and channel water conveyance project, which can solve the problems of difficult dredging of water inlet, easy blockage of screen mesh, and sediment deposition.

Inactive Publication Date: 2005-09-28
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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Problems solved by technology

[0046] However, the diversion culvert gates on the main embankment of the Yangtze River are affected by the changes in the water level of the Yangtze River. Most of them divert water in intermittent periods, and the annual sediment deposition outside the gates is serious. When the elevation of the water inlet is lower than that of the dry water level, it is difficult to desilt the water inlet. This engineering measure also has the danger that the above-mentioned blocking meshes are easily blocked
In addition, this design also has the problem that its structural design is not reasonable because the law of the movement and settlement of the oncomelania in running water is not clear.

Method used

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  • Water-snail eradication method and tank for culvert and sluice and channel water delivery engineering
  • Water-snail eradication method and tank for culvert and sluice and channel water delivery engineering
  • Water-snail eradication method and tank for culvert and sluice and channel water delivery engineering

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Embodiment Construction

[0066] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the invention, and are only examples.

[0067] In the figure, 1 is the fence, 2-1, 2-2, 2-3 are the snail-stop walls, 3 is the trash rack, 4 is the bottom of the pool, 5 is the water inlet, 6 is the water hole, 7 is the slope, H K is the high water level, and K is the low water level.

[0068] refer to Figure 1-Figure 6 Culvert sluice of the present invention and canal water conveyance project sink screw pool, comprise enclosure wall 1, pond bottom 4, can form slope or be right angle with a certain oblique angle between pond bottom 4 and enclosure wall 1, evenly spaced between the enclosure wall 1 The snail blocking walls 2-1, 2-2, 2-3, the snail blocking wall 2-1 is located behind the water inlet 5, there is a slope 7 between the water inlet 5 and the bottom 4 of the pool; the bottom 4 of the pool is l...

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Abstract

The present invention is watersnail killing method and snail depositing pond for culvert, sluice, ditch and other water transfer engineering. The snail depositing pond includes inclined or vertical walls, bottom, snail blocking walls with lower water channel, and water inlet ditch with slope to the pond. The present invention is developed on the basis of researching the life habit of watersnail, and can separate and intercept watersnail effectively from other foreign matter in water while ensuring normal irrigation job.

Description

technical field [0001] The invention relates to a method for separating and intercepting oncomelania in culvert gates and canal water delivery projects and a snail sink designed by the method. Background technique [0002] Schistosomiasis is a parasitic disease that is caused by schistosomiasis parasitic in the human body. Oncomelania is the only Chinese host of schistosomiasis larvae, and the migration and spread of oncomelania are the main ways for the spread and spread of schistosomiasis. Field observations and experimental studies have shown that oncomelania transportation, especially long-distance transportation of a large number of oncomelania, is accomplished by means of water flow. Therefore, it is very important to study the transport and dispersal characteristics of Oncomelania snails in rivers to control the prevalence of schistosomiasis. [0003] Oncomelania is composed of two parts: the shell (including the shell of the snail and the disc-shaped cover of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B13/00
Inventor 任大春朱国胜定培中李飞汪在芹
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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