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Construction method of mortar pebble ecological fishway

A construction method and pebble technology, applied in water conservancy projects, sea area engineering, coastline protection, etc., can solve the problems of low pebble construction efficiency and achieve the effects of reducing overall construction costs, reducing consumption, and reducing manufacturing costs

Active Publication Date: 2021-07-20
CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for constructing a masonry pebble ecological fishway, which can solve the problem of low construction efficiency of pebbles with protruding surfaces in the fishway

Method used

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  • Construction method of mortar pebble ecological fishway
  • Construction method of mortar pebble ecological fishway
  • Construction method of mortar pebble ecological fishway

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Embodiment 1

[0038] In order to fully understand the present invention, it is necessary to understand the concrete structure of the whole fishway facility:

[0039] Such as Figure 8 Among them, an ecological fishway, which includes a fishway connecting the upstream and downstream of the dam body 1, and a spiral fishway 2 with a reciprocating bend is arranged downstream of the fishway, and the spiral fishway 2 is used to reduce the slope. With this structure, the slope ratio of the longitudinal slope is not more than 1 / 80, which improves the fish passing effect.

[0040] The preferred solution is as Figure 7 , 8 Among them, at least one side of the spiral fishway 2 is provided with a floodplain 5 , and the height of the bottom of the floodplain 5 is higher than the top of the spiral fishway 2 . With this structure, by widening the water surface, the flow cross section becomes larger, and the flow velocity is further slowed down.

[0041] The preferred solution is as Figure 8 Among ...

Embodiment 2

[0051] For constructing above-mentioned fishway structure, a kind of mud masonry pebble ecological fishway construction method comprises the following steps:

[0052] S1, such as figure 1 Among them, the prefabricated wall panel 104 is prepared, the side mold 108 and the bottom mold 109 are set, and the flexible deformation layer 110 is set on the upper surface of the bottom mold 109. The flexible deformation layer 110 is a non-absorbent organic material that will deform locally under the gravity of the pebble 105 . The preferred flexible deformable layer 110 adopts a sponge structure, such as a polyurethane foam sponge board. The thickness of the flexible deformable layer 110 is 5 cm to 10 cm, and a layer of pebbles 105 are arranged on the flexible deformable layer 110. The particle diameter of the pebbles 105 is 3 to 10 cm. , the pebbles 105 should be fully cleaned to remove surface silt before arranging. It is best to keep the surface of the pebbles 105 moist when arranging...

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Abstract

The invention provides a construction method of a mortar pebble ecological fishway. The construction method comprises the following steps that a prefabricated wall plate is prepared, a side die and a bottom die are arranged, a flexible deformation layer is arranged on the upper surface of the bottom die, the flexible deformation layer is made of an organic material which can be locally deformed under the gravity of pebbles and does not absorb water, a layer of pebbles is arranged on the flexible deformation layer, the particle size of the pebbles is 3-10cm, a reinforcing mesh is placed, mortar is poured, and the prefabricated wall plate is obtained after the mortar is solidified; a formwork is erected, a fishway bottom plate is poured, the prefabricated wall plate is placed on the poured fishway bottom plate, pebbles on the prefabricated wall plate face upwards, and the prefabricated wall plate serves as the upper surface of the fishway bottom plate; and the fishway side wall is poured by taking the prefabricated wall plate as an inner mold of the fishway side wall. Rapid construction of the mortar pebble ecological fishway construction method is achieved through the steps; and by arranging the structure of the flexible deformation layer, mortar is poured after self-deformation of the flexible deformation layer under pressing of the pebbles, and the technical problem that the construction efficiency is low due to the fact that the pebbles protruding out of the surface are arranged in the fishway is solved.

Description

technical field [0001] The invention relates to the construction field of hydraulic structures, in particular to a method for constructing an ecological fishway made of mortared pebbles. Background technique [0002] In order to solve the ecological impact of water conservancy facilities on fish, fishways crossing dams are usually adopted to adapt to the migratory habits of fish. However, for some water conservancy facilities with a high drop, such as a drop of more than 50 meters, the fish passing effect is significantly reduced. Existing fishways usually adopt equal-width fishways. When the drop is large, the upward journey of the fishway is long, and the physical strength of some fish is not enough to support it to pass through the fishway. Chinese patent CN108729422A records a kind of high and low inlet, main and auxiliary outlet vertical slit type ecological fishway, which adopts the scheme of multi-inlet and multi-exit and the scheme of vertical slit ecological fishwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/08
CPCE02B8/08
Inventor 裴佩李方义崔紫嫣杨维豪邓政康张德勇赵华勇
Owner CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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