CN220057781U - Fish collecting system combined with dispersed water supplementing subsystem - Google Patents

Abstract

The utility model discloses a fish collecting system combined with a distributed water supplementing subsystem, which comprises a fishway, a fish inlet subsystem and a water supplementing subsystem, wherein a flat bottom pool is arranged at the inlet of the fishway, a water supplementing hole I is arranged at the bottom of the flat bottom pool, a water supplementing pipe I is connected with the water supplementing hole I, the fish inlet subsystem comprises a fish inlet channel, an inlet gate is arranged at the joint of the fish inlet channel and the fishway, a main fish inlet and at least one auxiliary fish inlet are arranged on the fish inlet channel, the main fish inlet is arranged at one end, close to the inlet gate, of the fish inlet channel, the water supplementing subsystem comprises a water supplementing channel, the water supplementing channel is connected with at least one water supplementing pipe II, an included angle of 15-30 degrees is formed between the water supplementing pipe II and the water supplementing channel, at least one group of water supplementing holes II are arranged between the water supplementing channel and the fish inlet channel, each group of water supplementing holes II is correspondingly arranged at the downstream of the water supplementing pipe II, and the fish inlet channel and the water supplementing channel are arranged in parallel and adjacent; the utility model has the advantages of high fish feeding efficiency, smooth water flow and simple structure.

Description

Fish collecting system combined with dispersed water supplementing subsystem

Technical Field

The utility model belongs to the technical field of fishway engineering, and particularly relates to a fish collecting system combined with a distributed water supplementing subsystem.

Background

In water conservancy and water transportation engineering, the barrage cuts off the migration channel of aquatic organisms and forms a block on the migration line of fish, which is one of the most obvious influences of engineering construction on aquatic organisms. The fishway is a most commonly used building for providing a barrier for the migration of aquatic organisms across a dam and a barrage and communicating with the migration line of the aquatic organisms. In the 20 th century, china built more fishways at coastal tidal gates and plain water gates, and built less fishways on inland rivers. Along with the increasing importance of China on ecological environment and species resource protection in the 21 st century, the construction of fishways is increasing. The fishway consists of an inlet, a tank body, an outlet and a fish attracting and water supplementing subsystem. The fishway inlet is generally arranged at the tail water of a power station plant or at the downstream of a gate opening of a sluice gate, and can be used for attracting fish by utilizing water flow of power station power generation tail water or gate sluice flow, and the ideal inlet position is selected by combining adjacent engineering arrangement.

In the fishway engineering, the arrangement of a fishway inlet and a fish collecting system is one of important contents, and whether the fishway inlet and the fish collecting system can be quickly detected and smoothly enter is a key of fishway success and failure. According to the observation data of the fishway of the ocean pond, 65% of successfully traced fishes enter the fishway through the fish collecting system, and the important effect of the fish collecting system on the whole import fish collecting and attracting aspect can be seen. Therefore, how to effectively attract fish and guide the fish to enter the fishway for tracing is a key problem to be solved by the fishway engineering. If the import is improperly designed, it is unnecessary to have a good fish passing condition inside the fishway. The conventional fish collecting system is poor in effect or complex in maintenance, fish cannot easily find a fishway inlet, and fish luring is not facilitated.

In order to protect fish resources, coordinate the relationship between engineering construction and fish protection, avoid the adverse effect of engineering on rare special fish, and make more intensive research and construction on fishways, especially fishway import fish gathering systems. The reasonable arrangement of the fish collecting system at the fishway inlet is the key for the successful operation of the whole fish passing facility. Ensuring that the fish-passing effect of the fishway can be played to the maximum extent only by ensuring that the fishway inlet and the inside of the fish-collecting system have good water flow conditions suitable for fish passing. The fish collecting system has narrow construction space, and relates to the problems of fish attracting facility arrangement and water supplementing flow regulation, and the fish is sensitive to the water flow condition in the fish passing channel.

In the prior art, how to effectively attract fish and guide the fish to enter the fishway for tracing, and ensuring the fish passing efficiency is a key problem to be solved in fishway engineering.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and provides a fish collecting system combined with a distributed water supplementing subsystem, which has the advantages of high fish feeding efficiency, smooth water flow and simple structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a combine catchment system of dispersion moisturizing subsystem, includes the fishway, advances the fishway and moisturizing subsystem, the import department of fishway is provided with the flat pond, the bottom of flat pond is provided with moisturizing hole one, moisturizing hole one is connected with moisturizing pipe one, advance the fishway and contain the fish canal of being connected with the fishway, advance the fishway and be provided with the import floodgate with fishway junction, advance and be provided with main inlet and at least one supplementary inlet on the fishway, main inlet locates the one end that is close to the import floodgate on advancing the fishway, the moisturizing subsystem contains the moisturizing canal, the moisturizing canal is connected with at least one moisturizing pipe two, moisturizing pipe two is 15 ~ 30 contained angles with moisturizing canal length direction and gets into the moisturizing canal, is provided with at least a set of moisturizing hole two between moisturizing canal and the fish canal, every moisturizing hole two corresponds the low reaches of locating moisturizing pipe two, advance the parallel and adjacent setting of fish and moisturizing canal.

In the scheme, through setting up moisturizing hole one, moisturizing pipe one on the flat pond of fishway import, the moisturizing speed of fishway import has been increased, the efficiency of tracing to the back on the fishway is got into to the target fish is improved, through setting up main inlet and supplementary inlet on advancing the fishway and attracting fish, guide more fish to the fishway import, main inlet sets up the one end that is close to the import floodgate, direct with most fish to the fishway in, flow water supply in the moisturizing canal through moisturizing pipe two pairs, the angle setting makes rivers steady downstream moisturizing hole two departments flow, rivers in the moisturizing canal flow through moisturizing hole in advance the fishway and lure the fish, advance the fishway and parallel and adjacent of moisturizing canal, compact structure conveniently sets up, make whole rivers stable through a series of moisturizing holes and moisturizing pipe moisturizing. The water supplementing channels are arranged and are parallel to the fish collecting channels, and after the water supplementing water flows fully dissipate energy in the water supplementing channels, the water supplementing water flows uniformly and dispersedly enter the fish collecting channels through a series of water supplementing holes, so that excessive interference and influence on fish tracing are avoided, and the whole water flow field structure is suitable; the flow state of the scattered outflow of the water supplementing channel entering the fish collecting channel is better than that of the concentrated outflow, and the fish affinity of the fish collecting system can be effectively improved.

The importation of the fishway is determined according to the habit of the local main fish passing object, hydrologic conditions, the composition of the junction building, the surrounding environment factors and the migration law of the passing fish.

Further, the water supplementing channel is connected with at least two water supplementing pipes II, and the water supplementing speed in the water supplementing pipe I is greater than the water supplementing speed in the water supplementing pipe II, and the water supplementing speed in the water supplementing pipe II is gradually reduced from upstream to downstream.

At least two water supplementing pipes II and at least two groups of water supplementing holes II are arranged, and the water supplementing speed of the water supplementing pipes I and II is gradually reduced from upstream to downstream to induce fish to swim to the upstream of the fishway.

Further, triangular guide piers are arranged at the two positions of the water supplementing holes.

And the diversion pier is arranged to guide water flow at the two positions of the water supplementing hole, so that the water flow is stable.

Furthermore, the fishway is provided with a plurality of clapboards, and vertical seams are formed in the clapboards.

Through setting up the vertical joint on the baffle, slow down the velocity of water flow in the fishway, satisfy the requirement of tracing up of fish.

Further, each group of the water replenishing Kong Erbao contains a plurality of groups of rectangular holes with gradually reduced areas.

The area of the rectangular frame gradually decreases from upstream to downstream, so that the water flow is smooth.

Further, the first water supplementing hole comprises a plurality of groups of rectangular holes with gradually reduced areas.

Further, the bottom height of the fish feeding channel is equal to that of the water supplementing channel, the top height of the fish feeding channel is equal to that of the water supplementing channel, and a cover plate is arranged on the top surface of the water supplementing channel.

The bottom of the fish inlet canal is equal to the bottom of the water supplementing canal, so that the water flow and the structural arrangement are facilitated, the top surface of the water supplementing canal is provided with the cover plate, the top surface of the fish inlet canal is opened, and the proper light of the fish inlet canal is ensured.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The fish bait is provided with the multi-inlet design of the main fish inlet and the auxiliary fish inlet, and the water supplementing holes are correspondingly arranged at the fish inlet, so that the fish feeding efficiency of fish passing facilities can be remarkably improved, and the fish bait is good in fish attracting effect; the first water supplementing point is arranged at the inlet section of the fishway, so that the flow velocity of water at the inlet of the fishway is increased, and the efficiency of the target fish entering the fishway to trace up and enter the main fish inlet is improved;

(2) According to experimental study and engineering practice, the design of the water supplementing holes, the water supplementing pipes, the water supplementing speed and the water guiding piers of the inlet fish collecting system disperses water supplementing, so that water flow in a fish collecting gallery is smoother, continuous upward tracing guiding effect is achieved, and the fish inlet efficiency of the fishway is improved;

(3) According to the utility model, through model tests and engineering practice verification, the maximum flow rates of the main fish inlet and the auxiliary fish inlet under each working condition are controlled within the range of the swimming speed of the fish passing object, so that the flow rate barrier is not caused to the main fish passing object;

(4) The utility model is suitable for various fish gathering systems of fishways, and the water supplementing flow, the water supplementing hole size and the space can be properly adjusted by combining the factors of upstream and downstream water levels and adjacent building arrangement to obtain a better water flow field, so that the applicability is strong and the fish gathering effect is good;

(5) The utility model has simple structure, convenient construction and low construction cost.

Drawings

Fig. 1 is a structural plan view of embodiment 1 of the present utility model;

FIG. 2 is a sectional view showing the construction of a water replenishment channel according to embodiment 1 of the present utility model;

FIG. 3 is a plan view of the deflector in example 1 of the present utility model;

FIG. 4 is a schematic diagram of the water replenishing hole in embodiment 1 of the present utility model;

fig. 5 is a schematic view showing the structure of a separator in embodiment 1 of the present utility model;

FIG. 6 is a plan view showing the structure of the first water replenishing hole in embodiment 2 of the present utility model;

in the figure: 111. a water supplementing pipe I; 112. a water supplementing pipe II; 12. a water supplementing channel; 131. a water supplementing hole I; 132. a water supplementing hole II; 211. a main fish inlet; 212. auxiliary fish inlet; 22. feeding fish into the fish channel; 23. an inlet gate; 3. fishway; 31. a flat bottom pool; 4. adjacent buildings; 5. a flow guiding pier; 6. a cover plate; 7. a partition plate; 71. and (5) vertical seams.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model.

Example 1

As shown in fig. 1-5, a fish collecting system combined with a distributed water supplementing subsystem comprises a fishway 3, a fish inlet subsystem and a water supplementing subsystem, wherein a flat bottom pool is arranged at the inlet of the fishway 3, a water supplementing hole I131 is arranged at the bottom of the flat bottom pool, the water supplementing hole I131 is connected with a water supplementing pipe I111, the fish inlet subsystem comprises a fish inlet channel 22 connected with the fishway 3, an inlet gate 23 is arranged at the joint of the fish inlet channel 22 and the fishway 3, a main fish inlet 211 and at least one auxiliary fish inlet 212 are arranged on the fish inlet channel 22, the main fish inlet 211 is arranged at one end, close to the inlet gate 23, of the fish inlet channel 22, the water supplementing subsystem comprises a water supplementing channel 12, the water supplementing channel 12 is connected with at least one water supplementing pipe II 112, the water supplementing pipe II 112 and the water supplementing channel 12 are 15 ° -30 ° in an included angle, at least one group of water supplementing holes II 132 are arranged between the water supplementing channel 12 and the water inlet channel 22, and each group of water supplementing holes II 132 is arranged at the position corresponding to the two water supplementing channels 12 and the two water supplementing channels 12, and the water supplementing channels 12 are arranged at the positions of the adjacent to the two water supplementing channels 12.

In the scheme, through setting up moisturizing hole one 131, moisturizing pipe one 111 on the flat pond of fishway 3 import, the moisturizing speed of fishway 3 import has been increased, efficiency that the target fish got into on the fishway 3 was traced back is improved, attract fish through setting up main inlet 211 and supplementary inlet 212 on the fishway 22, more fish is led to fishway 3 inlets, main inlet 211 sets up in the one end that is close to import floodgate 23, direct most fish is led to fishway 3, flow water supply in the moisturizing canal 12 through moisturizing pipe two 112, the angle setting makes the steady downstream moisturizing hole two 132 departments flow of rivers, the rivers in the moisturizing canal 12 flow to fish through moisturizing hole two 132 in intaking canal 22 lure, fish intake canal 22 is parallel and adjacent with moisturizing canal 12, compact structure, convenient arrangement, moisturizing through a series of moisturizing hole and moisturizing pipe, make whole rivers stable, reduce the interference of rivers to fish. The first water supplementing pipe 111 is buried in the ground of the flat bottom pool.

The entrance of the fishway 3 is determined according to the habit of the local main fish passing object, the hydrologic condition, the composition of the junction building, the surrounding environment factors and the migration law of the passing fish.

The inlet of the fishway 3 is arranged at a place where water flows downwards and fish migration lines and gathering are frequently carried out, and is as close to the forefront of fish which can reach upwards as possible; the water flow near the inlet of the fishway 3 is not required to be vortex or hydraulic jump, the water flow leaking from the inlet of the fishway 3 is required to be distinguished from various water flows leaking from the junction, the flow rate of the area near the inlet of the fish is required to be larger than the induction flow rate of the fish, namely, the flow rate of the fish is required to be larger than 0.2m/s under various water level combinations passing through the fish, and fish-luring water flows are required to be supplemented and fish-luring facilities are required to be arranged if necessary; the inlet of the fishway 3 should avoid the position easy to be silted, so as to avoid the blockage of the inlet of the fishway 3 and insufficient water depth caused by silting; the elevation of the inlet of the fishway 3 should be adapted to the changes of the water level mainly downstream of the fish season, if necessary two or more inlets of different positions and elevations should be provided. And meets the requirements of fish passing objects on water depth, and the water depth is generally not less than 1m. The entrance is not easy to be raised above the downstream river bed, or else, the bottom fish is not easy to find, and a slope can be arranged to be connected with the river bed; the inlet of the fishway 3 is generally open, and is not suitable for being sealed into a pipeline, for example, the fishway is sealed into a pipeline, and an artificial light source is matched for simulating natural illumination; the fish channel 3 is usually provided with a high water flow rate to attract fish, but the water flow rate cannot be too high, and the fish cannot enter the fish when the water flow rate exceeds the sudden-entry speed of the fish, so that the optimal fish inlet flow rate is selected between the critical speed and the sudden-entry speed. Combining historical research data and test data, the critical swimming speed of four large fishes is about 0.8-1.2m/s, and the sudden swimming speed is 1.0-1.9m/s.

The water supplementing subsystem consists of a first water supplementing pipe 111, 2 second water supplementing pipes 112, a water supplementing canal 12 and 3 groups of water supplementing holes 132, and the fish feeding system consists of 1 main fish feeding port 211,2 auxiliary fish feeding ports 212, a fish feeding canal 22 and an inlet gate 23. The dispersed water supplementing subsystem supplements water for the fish collecting channel and the main fish inlet 211 in a water-supplementing mode at the bottom of the first-stage flat-bottom pool chamber of the fishway 3 through the first water supplementing pipe 111, the water supplementing outflow is uniform and stable, the second 2 water supplementing pipes 112 outflow in the water supplementing channel 12 of the fish collecting system, and the water supplementing is dispersed and supplemented for the fish collecting channel and the auxiliary fish inlet 212 through the second two groups of water supplementing holes 132. The fish feeding system is characterized in that fish is led to enter the fish feeding canal 22 through the main fish inlet 211 and the auxiliary fish inlet 212 under proper water flow conditions, and is led to enter the fishway 3 through the inlet gate 23 under proper water flow conditions to continue to move forward, so that fish feeding is completed.

The outlet of the first water supplementing pipe 111 is positioned at the inner side of the inlet gate 23 and flows out from the bottom of the first-stage flat bottom pool chamber of the fishway 3, and the water outlet at the bottom is connected with the second water supplementing holes 132 of the group 1. The outlets of the two water supplementing pipes 112 are positioned in the water supplementing channel 12 and the side water outlet, the two water supplementing pipes 112 are steel pipes with the diameter of 0.8-1.5m, the origin of the two water supplementing pipes 112 is led from the proper upstream position, and the two water supplementing pipes 112 enter the water supplementing channel 12 at an angle of 15-30 degrees with the horizontal direction. The starting point and the outlet elevation of the water supplementing pipe II 112 are determined according to the water level, the elevation difference is generally 3-5m, and the water supplementing flow is controlled by a gate arranged on the upper platform during water supplementing. According to the test result, the fishway 3 adopts the first water supplementing pipe 111 to supplement water at a speed of 1.0-1.2m < 3 >/s and the second water supplementing pipe 112 to supplement water at an upstream water at a speed of 0.9-1.0m in actual operation ³ Second 112 water supplementing speed of 3# water supplementing pipe/s 0.5-0.6m ³ Comprehensive water replenishing scheme of/sThe fish attracting effect is better, and the specific water supplementing amount is suitable to be properly adjusted by combining the actual fish attracting effect and the specific engineering construction condition.

The water supplementing channel 12 is of a concrete structure, the width is 1m, the depth is about 4m, the top elevation and the bottom elevation are the same as those of the fish inlet channel 22, and the thickness of the top cover is 0.2-0.5m. One side of the water supplementing channel 12 is connected with a water supplementing pipe II 112, and the other side wall is provided with a water supplementing hole II 132.

The water supplementing holes are arranged in three groups, the first water supplementing hole 131 is arranged on the bottom plate at the inner side of the inlet gate 23 and is connected with the first water supplementing pipe 111, the size of the first water supplementing hole 131 is about 1 multiplied by 1m, water is discharged from bottom to top along the first water supplementing pipe 111 in a water supplementing mode, and the first water supplementing hole 131 can also be in a porous structure. The second water replenishing hole 132 is arranged on the downstream side wall of the water replenishing channel 12, and is arranged between the second water replenishing pipe 112 and the fish inlet in the longitudinal direction. The two groups of water supplementing holes 132 are 9 holes in the same water supplementing mode, and are respectively a-i (a is a group name, and values 1,2 and 3,i are water outlet hole numbers and 1-9) according to the serial numbers of the fishway 3 in the side direction of the river channel. The height of the second water supplementing holes 132 is 1m, and the hole widths are 3 holes with the diameter of 1.2m, 3 holes with the diameter of 0.9m and 3 holes with the diameter of 0.6m in sequence, and the interval between the second water supplementing holes 132 is 0.5m. Triangular guide piers 5 are arranged at the second group 132 of water supplementing holes, and the height of the guide piers 5 is consistent with that of the water supplementing channel 12. The water supplementing flow rate and the water supplementing flow rate are adjusted by adjusting the width of the hole seam, so that the effect of uniform outflow is achieved, and excessive interference to the fish to be traced is avoided. The fish blocking grille is arranged at the second water supplementing hole 132, so that fish can be effectively prevented from entering the second water supplementing pipe 112. The grid requirements are: 1.5-2cm mesh, stainless steel wire is 8mm wire. Meanwhile, as the grids are easy to block, a grid cleaning measure is required, and the equipment uses the grids so as to be cleaned, overhauled and replaced.

The water supplementing subsystem supplements water for the fish collecting channel and the main fish inlet 211 in a water-pumping mode at the bottom of the first-stage flat-bottom pool chamber of the fishway 3 through the first water supplementing pipe 111, the water supplementing outflow is uniform and stable, the second 2 water supplementing pipes 112 outflow in the water supplementing channel 12 of the fish collecting system, and the water supplementing channels and the auxiliary fish inlet 212 are dispersed and supplemented through the second two groups of water supplementing holes 132. And (3) supplementing water flow, namely calculating proper fish attracting flow rate and proper fish attracting flow rate by combining competing water flow of the fishway 3 flow according to the standard requirements and the fish ecological requirements, further determining the supplementing water flow, and performing experimental study if necessary.

The fish inlet is 1 main fish inlet 211,2 auxiliary fish inlets 212, and the main fish inlet 211 is arranged at the outer side of the fish inlet gate and has a width of about 4m. The auxiliary fish inlet 212 is arranged on the downstream side wall of the fish inlet canal 22, and the auxiliary fish inlet 212 is respectively arranged corresponding to the second water supplementing pipe 112 and the second water supplementing hole 132, and has a width of about 1m.

The fish inlet canal 22 is close to the water supplementing canal 12, has the width of 2m and the depth of about 4m, has the bottom elevation flush with the second water supplementing hole 132 and the fish inlet hole, has an open top and is in a reinforced concrete structure.

The inlet gate 23 is used for closing the gate in the engineering overhaul period to create a waterless condition for overhaul and closing the gate in the flood period to ensure flood control safety. The inlet gate 23 is arranged at the beginning end of the fishway 3 and at the tail end of the fish gathering system, is control equipment for the operation of the fishway 3, has a gate width of about 2m, is the same as the width of the fishway 3 and is not smaller than the width of the fishway 3, and is opened and closed by adopting a flat gate type and a manual and electric screw type hoist.

The fish feeding system is characterized in that fish is led to enter the fish feeding canal 22 through the main fish inlet 211 and the auxiliary fish inlet 212 under proper water flow conditions, and is led to enter the fishway 3 through the inlet gate 23 under proper water flow conditions to continue to move forward, so that fish feeding is completed.

The fish collecting system is a reinforced concrete structure, the total width is about 4m, the total length is about 60-80m, the fish collecting system is overhanging on corbels of other adjacent buildings 4, a prefabricated structure form is adopted, and the length of a single prefabricated structure section is 15-20m.

Further, the water compensating canal 12 is connected with at least two water compensating pipes two 112, the water compensating speed in the water compensating pipe two 111 is greater than the water compensating speed in the water compensating pipe two 112, and the water compensating speed in the water compensating pipe two 112 gradually decreases from upstream to downstream.

At least two water supplementing pipes II 112 and at least two groups of water supplementing holes II 132 are arranged, and the water supplementing speeds of the water supplementing pipes I111 and II 112 gradually decrease from the upstream to the downstream to induce fish to swim to the upstream of the fishway 3.

Further, a triangular flow guiding pier 5 is arranged at the second water supplementing hole 132.

The water flow at the second water supplementing hole 132 is guided by the guide pier 5, so that the water flow is stable.

Further, the fishway 3 is provided with a plurality of partition boards 7, and vertical seams 71 are formed in the partition boards 7.

By arranging the vertical slits 71 on the partition plate 7, the water flow speed in the fishway 3 is slowed down, and the requirement of fish backtracking is met.

Further, each of the second water replenishing holes 132 includes a plurality of rectangular holes with gradually decreasing areas.

The area of the rectangular hole gradually decreases from upstream to downstream, so that the water flow is smooth.

Further, the cross section of the fishway 3 is in an inverted trapezoid shape, and the first water supplementing pipe 111 is a water-generating type water pipe.

The fishway 3 comprises a horizontal plane 31 at the bottom and inclined planes at two sides, the first water supplementing hole 131 is arranged on the horizontal plane 31 at the bottom and is connected with the first water supplementing pipe 111, water supplementing is carried out in a water pumping mode from bottom to top, and water flow is stable.

Further, the bottom of the fish feeding channel 22 is equal to the bottom of the water supplementing channel 12, and the top of the water supplementing channel 12 is provided with a cover plate 6.

The fish inlet canal 22 is equal in height with the water supplementing canal 12, water flow and structural arrangement are facilitated, the cover plate 6 is arranged on the top surface of the water supplementing canal 12, the top surface of the fish inlet canal 22 is opened, and proper light of the fish inlet canal 22 is ensured.

Example 2

As shown in fig. 6, a fish collecting system combined with a distributed water supplementing subsystem according to the present embodiment is further optimized on the basis of embodiment 1:

further, the first water replenishing holes 131 include a plurality of rectangular holes with gradually reduced areas.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a combine catchment system of scattered moisturizing subsystem, its characterized in that, includes the fishway, advances the fishsubsystem and moisturizing subsystem, the import department of fishway is provided with the flat bottom pond, the bottom of flat bottom pond is provided with moisturizing hole one, moisturizing hole one is connected with moisturizing pipe one, advance the fishsubsystem and contain the entry canal of being connected with the fishway, advance fishway and fishway junction and be provided with the import floodgate, advance and be provided with main inlet and at least one supplementary inlet on the fishway, main inlet locates the one end that is close to the import floodgate on advancing the fishway, the moisturizing subsystem contains the moisturizing canal, the moisturizing canal is connected with at least one moisturizing pipe two, moisturizing pipe two is 15 ~ 30 contained angles with moisturizing canal length direction and gets into the moisturizing canal, is provided with at least one set of moisturizing hole two between moisturizing canal and the entry canal, every set of moisturizing hole two corresponds the downstream department of locating the moisturizing pipe two, advance fishway and the parallel and adjacent setting.

2. The fish gathering system incorporating a distributed water replenishment subsystem as set forth in claim 1 wherein the replenishment canal is connected with at least two replenishment pipes, the replenishment rate in the replenishment pipe one being greater than the replenishment rate in the replenishment pipe two, the replenishment rate in the replenishment pipe two decreasing progressively from upstream to downstream.

3. The fish gathering system in combination with a distributed water replenishment subsystem of claim 1 wherein triangular piers are provided at two locations of the replenishment holes.

4. The fish gathering system in combination with the distributed water replenishment subsystem as recited in claim 1, wherein a plurality of baffle plates are arranged on the fishway, and vertical slits are arranged on the baffle plates.

5. The fish gathering system incorporating a distributed refill subsystem of claim 1 wherein each set of refill Kong Erbao comprises a plurality of sets of rectangular apertures of progressively smaller area.

6. The fish gathering system in combination with a distributed water replenishment subsystem as recited in claim 5, wherein the replenishment port one comprises a plurality of groups of rectangular holes of progressively smaller area.

7. The fish gathering system in combination with the distributed water replenishment subsystem of claim 1 wherein the bottom of the feed canal is equal in height and the top of the water replenishment canal is equal in height, and the top of the water replenishment canal is provided with a cover plate.