CN117513252A

CN117513252A - Retaining dam for river channel water conservancy construction

Info

Publication number: CN117513252A
Application number: CN202311523540.3A
Authority: CN
Inventors: 苗祥峰
Original assignee: Shandong Shanyi Water Conservancy Engineering Co ltd
Current assignee: Shandong Shanyi Water Conservancy Engineering Co ltd
Priority date: 2023-11-16
Filing date: 2023-11-16
Publication date: 2024-02-06

Abstract

The invention discloses a retaining dam for river water conservancy construction, wherein a horizontal through groove is penetrated at the middle upper part of a dam body, horizontal stepping motors with braking functions are respectively embedded at the left end and the right end of the through groove, vertical limiting strips are respectively fixed at the left end and the right end of the through groove, supporting plates are respectively coaxially fixed on rotating shafts of the two stepping motors, the supporting plates are in sealing and rotating connection with the dam body, the adjacent ends of the two supporting plates are in sealing fit with the left end and the right end of the through groove, and vertical supporting strips are respectively fixed at the adjacent ends of the two supporting plates. The air bag is filled or shrunken by controlling the air charging device, so that the floating gate floats upwards or sinks, the device can adapt to different water levels, water on the surface of a water body can be discharged, the discharged water is utilized to drive the upper generator to rotate for generating electricity, and the floating gate can also float upwards and downwards along with water waves in a water storage state, so that the middle generator can rotate for generating electricity.

Description

Retaining dam for river channel water conservancy construction

Technical Field

The invention relates to the technical field of water conservancy dams, in particular to a water retaining dam for river water conservancy construction.

Background

The dam is mostly built in a river channel or a canal by using earth and stones or concrete, and can play roles of water storage, flood control, hydroelectric generation and the like. The current dam is when carrying out hydroelectric power generation, often utilizes water to flow to the low department at the drainage stage and drives generating set and rotate, realizes the generating set purpose, and in daily retaining in-process, when not draining, rivers do not contact with generating set, are difficult to realize the generating function, and current dam is when the drainage, makes silt and silt of depositing in the dam bottom department and float the floating debris entering the low reaches of water along with the rivers easily to cause the pollution of low reaches water and the lifting of riverbed, be unfavorable for ecological environment's treatment and water resource's protection, outstanding prior art's shortcoming.

Disclosure of Invention

The invention aims to provide a water retaining dam for river water conservancy construction, which aims to solve the technical problems.

The invention adopts the following technical scheme for realizing the purposes:

the utility model provides a water retaining dam for river course water conservancy construction, includes dam body, logical groove, step motor, spacing, supporting disk, support bar, upper gate, lower gate, tractive frame, tractive arch, supporting groove, floating gate, support column, gasbag, aerating device, no. one electric winch, hawser, power generation part, desilting part, the upper portion runs through in the dam body has horizontal logical groove, logical groove left and right sides respectively embeds there is horizontal step motor that has brake function, logical groove left and right sides both ends respectively are fixed with vertical spacing, two step motor's pivot coaxial fixed with the supporting disk respectively, the supporting disk is sealed rotation connection mutually with the dam body, two supporting disk adjacent end is sealed laminating mutually with logical groove left and right sides both ends, two the supporting disk adjacent end is fixed with vertical support bar respectively, logical inslot installs vertical upper gate and lower gate, the left and right parts of the front and rear ends of the upper gate are respectively fixed with a U-shaped vertical traction frame, the left and right parts of the front and rear ends of the lower gate are respectively fixed with horizontal traction protrusions, each traction frame is in spaced connection with the traction protrusions, the lower gate is in sliding connection between the traction frames of the front and rear ends of the upper gate, the bottom end of the upper gate can be in sealing fit with the top end of the lower gate, the front end of the upper gate can be in abutting contact with the rear end of a limit bar when the upper gate is in a vertical state, the left and right ends of the upper gate and the left and right ends of the lower gate are respectively provided with vertical supporting grooves, the supporting grooves are in sliding connection with supporting bars, the rear lower part of the lower gate is rotationally connected with horizontal supporting rollers, the upper gate is provided with floating gates, the left and right ends of the upper gate, the left and right ends of the lower gate and the left and right ends of the floating gate are in sealing fit with the left and right ends of the through grooves, the utility model discloses a floating gate, including floating gate, dam body, upper gate, horizontal and confined gasbag, the floating gate, the left and right sides of gate is fixed with vertical support column respectively, two sliding connection about the support column is about the support tank of two parts about with the upper gate, horizontal and confined gasbag is installed on floating gate upper portion, aerating device is installed to the floating gate, aerating device's charging connector is linked together with the gasbag, electric hoist engine No. one is installed to the dam body, electric hoist engine receipts hank has a hawser No. one, the hawser end is fixed with the upper gate mutually, the power generation part is installed jointly with the upper gate to floating gate, the desilting part is installed to the dam body.

On the basis of the technical scheme, the power generation part comprises an upper generator, an upper impeller, racks, a middle generator, gears, a lower generator and a lower impeller, wherein the upper generator is fixed at the front end of the floating gate, the upper generator is coaxially connected with the horizontal upper impeller, the vertical racks are fixed at the front end of the floating gate, the middle generator is fixed at the front end of the upper gate, the gears are coaxially fixed with the gears, the gears are meshed with the racks, the lower generator is fixed at the front end of the upper gate, and the lower generator is coaxially connected with the horizontal lower impeller.

On the basis of the technical scheme, the dredging part comprises a supporting roller, a guide groove, a placing groove, a raised table, a storage hopper, a drain board, a traction rod, a dragging frame, a traction groove, a positioning hole, a salvage groove, a drainage hole, a positioning pin, a second electric winch and a second cable, wherein the lower rear part of the lower gate is rotationally connected with the horizontal supporting roller, guide grooves are respectively embedded at the left end and the right end of the through groove, the guide grooves incline upwards backwards, the front parts of the bottom ends of the through grooves are respectively embedded with the horizontal placing grooves, the bottoms of the two guide grooves are communicated with the left and the right parts of the placing grooves, the front parts of the placing grooves are provided with arc-shaped raised tables which point to the upper middle part of the placing groove, the inside of the placing groove is provided with the horizontal storage hopper, the storage hopper can be connected with the guide groove in a sliding mode, the left and right ends of the drain board are respectively fixed with cylindrical and horizontal traction rods, the left and right ends of the left and the right ends of the drain board are respectively, the left and the right ends of the left and the right sides of the drain board are hinged with the horizontal traction rods, the left and the right ends of the two traction rods are respectively provided with the horizontal traction rods, the left and the right ends of the left end of the lower winch are hinged with the horizontal drain board, the two traction rods are respectively, the two traction rods and the left and the horizontal storage hopper are fixedly arranged at the left and the horizontal storage hopper and the horizontal rope, and the tail end of the second mooring rope is fixed with the dragging frame.

On the basis of the technical scheme, the stepping motor, the inflating device, the first electric winch, the upper generator, the middle generator, the lower generator and the second electric winch are electrically connected with an external controller and a power supply together, when the stepping motor rotates synchronously, the upper gate and the lower gate can swing forwards or backwards through sliding connection of the supporting bar and the supporting groove, the inflating device can inflate the air bag and control the air in the air bag, when the first electric winch retracts and releases the first cable, the upper gate can slide up and down along the supporting bar, when the upper gate slides up along the supporting bar to a certain height, the lower gate can be dragged up along the supporting bar through the insertion connection of a clearance between the traction frame and the traction protrusion, both the left end and the right end of the lower gate can be in sealing fit with the left end and the right end of the inner wall of the traction frame, when the lower gate tilts forwards and downwards, the supporting roller at the bottom of the lower gate can be in friction fit with the bottom end of the through groove, the upper end of the sliding frame can slide downwards along the sliding direction, the upper sliding pin can be positioned right along the sliding hole, and the upper sliding pin can be positioned right along the upper locating pin, and the upper locating pin can be positioned right along the upper locating pin, the sliding hole can be further coaxial with the sliding hole, and the upper locating pin can be located right when the sliding pin is positioned along the upper locating pin, when the dragging frame slides upwards along the guide groove, the bushing can be unfolded leftwards upwards by utilizing the cooperation of the dragging groove and the dragging rod, and then the storage hopper is driven to slide upwards along the guide groove, and the density of parts in the device except for the density of the air bag is less than that of water, and the density of other parts is greater than that of water.

Compared with the prior art, the invention has the following advantages: according to the invention, the air bag is filled or shrunken by controlling the air charging device, so that the floating gate can float upwards or sink downwards, different water levels can be adapted, the water on the surface of the water body can be discharged, the upper generator is driven to rotate for generating electricity by the discharged water, the floating gate can float upwards and downwards along with water waves in a water storage state, the middle generator can rotate for generating electricity, the bottom end of the lower gate is separated from the sealing joint of the bottom end of the through tank by controlling the stepping motor, the first electric winch and the second electric winch, the bottom end of the upper gate is separated from the top end of the lower gate, the drain plate, the storage hopper and the salvage tank are dragged upwards by the dragging frame, the water on the middle layer and the bottom layer of the water body can be discharged, the lower generator can be driven to generate electricity when the water on the middle layer of the water body is discharged, sediment such as silt and the bottom of the through tank can be promoted to move forwards when the water on the bottom layer of the water body is discharged, the sediment can be reduced, the sediment can be intercepted by the drain plate and the sediment hopper, the sediment can be salvaged, the sediment can be prevented from flowing into the water body through the upper gate, and the ecological environment can be prevented from being salvaged by using the floating water, and the surface of the ecological environment can be prevented.

Drawings

Fig. 1 is a schematic diagram of an axial structure of the present invention.

FIG. 2 is a schematic diagram of a right cut-away structure of a dam of the present invention.

Fig. 3 is a schematic view showing the front structure of the upper and lower shutters of the invention.

Fig. 4 is a schematic diagram of the cooperation of the drag frame and the storage bucket of the present invention.

Fig. 5 is a schematic view of a partial enlarged structure at a point of the present invention.

Fig. 6 is a schematic view showing the cooperation of the upper and lower gates and the floating gate of the present invention.

In the figure: 1. the dam body, 2, a through groove, 3, a stepping motor, 4, a limit bar, 5, a supporting disc, 6, a supporting bar, 7, an upper gate, 8, a lower gate, 9, a traction frame, 10, a traction bulge, 11, a supporting groove, 12, a floating gate, 13, a supporting column, 14, an air bag, 15, an inflating device, 16, a first electric winch, 17, a first cable, 18, a power generation part, 19, a dredging part, 20, an upper generator, 21, an upper impeller, 22, a rack, 23, a middle generator, 24, a gear, 25, a lower generator, 26, a lower impeller, 27, a supporting roller, 28, a guide groove, 29, a drop groove, 30, a bulge table, 31, a storage hopper, 32, a drain board, 33, a traction rod, 34, a traction frame, 35, a traction groove, 36, a locating hole, 37, a salvaging groove, 38, a drain hole, 39, a locating pin, 40, a second electric winch, 41 and a second cable.

Detailed Description

The invention is described in further detail below with reference to the drawings and the specific examples.

As shown in fig. 1-6, the retaining dam for river water conservancy construction comprises a dam body 1, a through groove 2, a stepping motor 3, a limiting strip 4, a supporting disk 5, a supporting strip 6, an upper gate 7, a lower gate 8, a pulling frame 9, a pulling protrusion 10, a supporting groove 11, a floating gate 12, a supporting column 13, an air bag 14, an inflating device 15, a first electric winch 16, a first cable 17, a power generation part 18 and a dredging part 19, wherein the middle upper part of the dam body 1 is penetrated by a horizontal through groove 2, the left end and the right end of the through groove 2 are respectively embedded with a horizontal stepping motor 3 with a braking function, the left end and the right end of the through groove 2 are respectively fixed with a vertical limiting strip 4, rotating shafts of the two stepping motors 3 are respectively coaxially fixed with the supporting disk 5, the supporting disk 5 is in sealing rotation connection with the dam body 1, the adjacent ends of the two supporting disks 5 are in sealing fit with the left end and the right end of the through groove 2, the front end of the upper gate 7 can be abutted against the rear end of the limit strip 4 when in a vertical state, thereby assisting in ensuring the stability of the vertical state of the upper gate 7 when storing water, the adjacent ends of the two supporting plates 5 are respectively fixed with vertical supporting bars 6, the vertical upper gate 7 and the vertical lower gate 8 are arranged in the through groove 2, the left and right parts of the front and rear ends of the upper gate 7 are respectively fixed with a U-shaped vertical traction frame 9, the left and right parts of the front and rear ends of the lower gate 8 are respectively fixed with a horizontal traction protrusion 10, the traction frames 9 are alternately spliced with the traction protrusions 10, the lower gate 8 is slidingly connected between the traction frames 9 at the front and rear ends of the upper gate 7, namely the traction of the lower gate 8 is realized by utilizing the traction frames 9 on one hand, and the stability of the sliding direction of the lower gate 8 compared with the upper gate 7 is ensured on the other hand, the bottom end of the upper gate 7 can be in sealing fit with the top end of the lower gate 8, vertical supporting grooves 11 are respectively formed in the left end and the right end of the upper gate 7 and the left end and the right end of the lower gate 8, the supporting grooves 11 are in up-down sliding connection with the supporting bars 6, a horizontal supporting roller 27 is rotationally connected to the rear lower part of the lower gate 8, the supporting roller 27 is used for rolling friction with the bottom end of the through groove 2 so as to facilitate the back-and-forth swinging of the lower gate 8, a floating gate 12 is arranged on the upper part of the upper gate 7, the left end and the right end of the lower gate 8 and the left end and the right end of the floating gate 12 are in sealing fit with the left end and the right end of the through groove 2, the left and right parts of the floating gate 12 are respectively fixed with vertical supporting columns 13, the two supporting columns 13 are connected with the supporting grooves 11 of the left and right parts of the upper gate 7 in an up-down sliding mode, a horizontal and closed air bag 14 is arranged on the upper part of the floating gate 12, an air charging device 15 is arranged on the floating gate 12, an air charging nozzle of the air charging device 15 is communicated with the air bag 14, a first electric winch 16 is arranged on the dam body 1, a first cable 17 is wound on the first electric winch 16, the tail end of the first cable 17 is fixed with the upper gate 7, a power generation part 18 is jointly arranged on the floating gate 12 and the upper gate 7, and a dredging part 19 is arranged on the dam body 1.

The power generation part 18 comprises an upper power generator 20, an upper pulsator 21, racks 22, a middle power generator 23, gears 24, a lower power generator 25 and a lower pulsator 26, wherein the front end of the floating gate 12 is fixedly provided with the horizontal upper power generator 20, the input shaft of the upper power generator 20 is coaxially connected with the horizontal upper pulsator 21, the front end of the floating gate 12 is fixedly provided with the vertical racks 22, the front end of the upper gate 7 is fixedly provided with the middle power generator 23, the input shaft of the middle power generator 23 is coaxially fixedly provided with the gears 24, the gears 24 are meshed with the racks 22, the front end of the upper gate 7 is fixedly provided with the horizontal lower power generator 25, and the input shaft of the lower power generator 25 is coaxially connected with the horizontal lower pulsator 26.

The dredging part 19 comprises a supporting roller 27, a guide groove 28, a placing groove 29, a raised table 30, a storage hopper 31, a bushing 32, a traction rod 33, a traction frame 34, a traction groove 35, a positioning hole 36, a salvaging groove 37, a drainage hole 38, a positioning pin 39, a second electric winch 40 and a second cable 41, wherein the lower back part of the lower gate 8 is rotatably connected with the horizontal supporting roller 27, the left and right ends of the through groove 2 are respectively embedded with the guide groove 28, the guide groove 28 is inclined upwards and backwards, the front part of the bottom end of the through groove 2 is provided with the horizontal placing groove 29, the bottoms of the two guide grooves 28 are communicated with the left and right parts of the placing groove 29, the front part of the placing groove 29 is provided with the arc-shaped and horizontal raised table 30, the raised table 30 points to the upper middle and upper part of the placing groove 29, the raised table 30 can enable water flow to be increased when water flow nearby the water flow through the raised position, so as to be convenient for discharging silt and sediment in the placing groove 29, the storage hopper 31 is placed in the placing groove 29, the storage hopper 31 can be connected with the guide groove 28 in a sliding way, the front part of the storage hopper 31 is hinged with a horizontal bushing plate 32, the left end and the right end of the rear part of the bushing plate 32 are respectively fixed with a cylindrical and horizontal traction rod 33, the two traction rods 33 are coaxial, the guide groove 28 is connected with a dragging frame 34 in a vertically sealing sliding way, the bottom of the dragging frame 34 is provided with two horizontal traction grooves 35, the two traction grooves 35 are connected with the two traction rods 33 in a gap way, the two traction grooves 35 are respectively arranged at the left part and the right part of the dragging frame 9, the upper part of the dragging frame 34 is penetrated with a plurality of positioning holes 36, the upper part of the rear end of the floating gate 12 is fixed with a horizontal salvaging groove 37, the left part and the right part of the salvaging groove 37 are penetrated with a plurality of drainage holes 38, the drain hole 38 is favorable to salvaging the groove 37 and in time discharging unnecessary water when salvaging the floater, salvaging groove 37 bottom is fixed with a plurality of vertical locating pins 39, each locating pin 39 can be simultaneously with each locating hole 36 corresponding grafting, no. one electric hoist 16 is fixed on the guide way 28 upper portion of dam body 1 left portion, no. two electric hoists 40 are fixed on the guide way 28 upper portion of dam body 1 right portion, no. two electric hoists 40 receive and twist No. two hawsers 41, no. two hawsers 41 end is fixed mutually with dragging frame 34.

The stepping motor 3, the inflating device 15, the first electric winch 16, the upper generator 20, the middle generator 23, the lower generator 25 and the second electric winch 40 are electrically connected with an external controller and a power supply, when the stepping motor 3 rotates synchronously, the upper gate 7 and the lower gate 8 can swing forwards or backwards through the sliding connection of the supporting bar 6 and the supporting groove 11, the inflating device 15 can inflate the air bag 14 and can control the air in the air bag 14 to enter and exit, the first electric winch 16 can enable the upper gate 7 to slide up and down along the supporting bar 6 when the first cable 17 is retracted, the lower gate 8 can slide up along the supporting bar 6 through the clearance grafting of the dragging frame 9 and the dragging bulge 10 when the upper gate 7 slides up to a certain height, the left end and the right end of the lower gate 8 are respectively sealed and jointed with the left end and the right end of the inner wall of the dragging frame 34, the bottom end of the lower gate 8 can be sealed and attached to the bottom end of the through groove 2 under the action of gravity, the supporting roller 27 at the bottom of the lower gate 8 can be in rolling friction with the bottom end of the through groove 2 under the action of gravity when the lower gate 8 is inclined forwards and downwards, the upper impeller 21 is positioned in front and upwards of the floating gate 12, the lower impeller 26 is positioned in front and upwards of the lower gate 8, the floating gate 12 can enable the positioning hole 36 to be coaxial with the positioning pin 39 when the upper gate 7 is inclined rightwards and upwards to a certain angle, the second electric winch 40 can enable the dragging frame 34 to slide upwards and downwards along the guide groove 28 when the second electric winch 40 is used for retracting the second cable 41, the dragging frame 34 can enable the positioning pin 39 to be spliced with the positioning hole 36 and further drag the floating gate 12 and the salvaging groove 37 to move rightwards and upwards when the positioning hole 36 is coaxial with the positioning pin 39, when the dragging frame 34 slides upwards along the guide groove 28, the bushing 32 can be unfolded leftwards and upwards by utilizing the cooperation of the dragging groove 35 and the dragging rod 33, and then the storage hopper 31 is driven to slide upwards along the guide groove 28, the density of parts in the device except for the density of the air bag 14 is smaller than that of water, and the densities of other parts except for the air bag 14 are larger than that of water, so that other parts except for the air bag 14 can sink in a water body under the action of gravity, and the bottom end of the lower gate 8 can tend to be in sealing fit with the through groove 2 under the action of gravity.

The working principle of the invention is as follows: the device is built in a river course, so that water flows forwards from back, namely the rear of a dam body 1 is high in water level, under the water storage state, a lower gate 8 and an upper gate 7 are in vertical states, at the moment, the bottom end of the lower gate 8 is in sealing fit with the bottom end of a through groove 2 under the action of gravity, the bottom end of the upper gate 7 is in sealing fit with the top end of the lower gate 8 under the action of gravity, at the moment, river water can be intercepted by the lower gate 8 and the upper gate 7, and the air bag 14 can be inflated by an inflation device 15, so that the air bag 14 is inflated gradually, when the air bag 14 is inflated to a certain degree, and the water storage water level is higher, the air bag 14 can float along with the water storage water level, so as to adapt to water levels with different heights, and when water waves, wave and the like exist on the water level, the air bag 14 can float up and down along with the water level, so that the cooperation of a rack 22 and a gear 24 can be utilized to enable a generator 23 to rotate, so that power generation is realized.

When the water on the surface of the water storage body needs to be released, the air in the air bag 14 can be discharged through the air charging device 15, so that the air bag 14 is gradually shrunken, the floating gate 12 can be lowered under the action of gravity, the water on the surface of the water storage body can be enabled to overflow the floating gate 12 and be discharged, and the water on the surface of the water body can wash the upper impeller 21 after overflowing, so that the upper generator 20 can generate electricity.

When water in the middle layer and the bottom layer of the water storage body is required to be released, the two stepping motors 3 can be controlled to synchronously rotate clockwise (observed at right view angle), so that the lower gate 8, the upper gate 7 and the floating gate 12 can incline upwards and backwards until the lower gate 8, the upper gate 7 and the floating gate 12 are parallel to the guide groove 28, then the first rope 17 is reeled by the first electric winch 16, the upper gate 7 can be lifted, the bottom end of the upper gate 7 and the top end of the lower gate 8 are released from sealing fit, water in the middle layer of the water body can be discharged from the position between the upper gate 7 and the lower gate 8, the water in the middle layer of the water body can wash the lower impeller 26 when passing through, the lower generator 25 can rotate to realize power generation, and as the upper gate 7 is lifted continuously, the lower gate 8 can be lifted by utilizing the cooperation of the traction frame 9 and the traction bulge 10, so that the lower gate 8 is separated from the bottom end of the through groove 2, water at the bottom layer of the water body can be discharged, and as the bottom of the lower gate 8 moves forwards and then lifts, the sludge and the sediment at the bottom of the through groove 2 are separated from the support of the lower gate 8, so that the sludge and the sediment can be pushed forwards by the flow of the water when the water at the bottom layer of the water body is discharged, the second electric winch 40 can be used for winding the second cable 41 at the same time in the process, the dragging frame 34 can be lifted upwards, the drain plate 32 swings and expands forwards by the cooperation of the dragging groove 35 and the dragging rod 33, then the drain plate 32 and the storage hopper 31 slide backwards and upwards along the guide groove 28, the sludge and the sediment which are washed by the water flow and move forwards can be intercepted by the expanded drain plate 32, then fall into the storing fill 31, can make sediment such as silt and silt be lifted by the storing fill 31, and along with dragging the further upward slip of frame 34, can make locating hole 36 peg graft with locating pin 39, can utilize dragging frame 34 to lift up to the groove 37 of salvaging afterwards, can utilize the groove 37 of salvaging to float the floating debris of floating gate 12 back top on the surface of water, can be convenient clear up silt, silt and floating debris.

When the water storage state needs to be restored, the first rope 17 and the second rope 41 are released through the first electric winch 16 and the second electric winch 40, the floating gate 12, the dragging frame 34, the bushing 32 and the storage hopper 31 can be reset, the top end of the lower gate 8 is restored to be in sealing fit with the bottom end of the upper gate 7, the stepping motor 3 is controlled to rotate reversely, the upper gate 7 and the lower gate 8 can be restored to be in a vertical state, the bottom end of the lower gate 8 is restored to be in sealing fit with the bottom end of the through groove 2, and water storage is realized again.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art from this disclosure that changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the invention.

Claims

1. The utility model provides a water conservancy construction is with retaining dam, includes dam body (1), logical groove (2), step motor (3), spacing (4), supporting disk (5), support bar (6), go up gate (7), lower gate (8), tractive frame (9), tractive arch (10), supporting groove (11), floating gate (12), support column (13), gasbag (14), aerating device (15), no. electric hoist engine (16), hawser (17), power generation part (18), desilting part (19), its characterized in that: the upper part of the dam body (1) is penetrated with a horizontal through groove (2), the left end and the right end of the through groove (2) are respectively embedded with a horizontal stepping motor (3) with a braking function, the left end and the right end of the through groove (2) are respectively fixed with a vertical limit bar (4), the rotating shafts of the two stepping motors (3) are respectively coaxially fixed with a supporting disc (5), the supporting discs (5) are in sealed rotating connection with the dam body (1), the adjacent ends of the supporting discs (5) are in sealed joint with the left end and the right end of the through groove (2), the adjacent ends of the supporting discs (5) are respectively fixed with a vertical supporting bar (6), the left end and the right end of the through groove (2) are respectively fixed with a vertical upper gate (7) and a vertical pulling frame (9), the left end and the right end of the upper gate (7) are respectively fixed with a horizontal pulling bulge (10), the left end and the right end of the lower gate (8) are alternately fixed with a horizontal pulling bulge (9), when the front end and the lower end (7) of the upper gate (7) are in a sealed joint state, and the front end (8) and the lower end (8) of the vertical pulling frame (9) can be in a sealed joint state, the left and right ends of the upper gate (7) and the left and right ends of the lower gate (8) are respectively provided with a vertical supporting groove (11), the supporting grooves (11) are connected with the supporting bars (6) in a vertical sliding way, the lower part of the rear part of the lower gate (8) is rotationally connected with a horizontal supporting roller (27), the upper part of the upper gate (7) is provided with a floating gate (12), the left and right ends of the upper gate (7), the left and right ends of the lower gate (8) and the left and right ends of the floating gate (12) are respectively in sealing fit with the left and right ends of the through groove (2), the left and right parts of the floating gate (12) are respectively fixed with a vertical supporting column (13), the two support columns (13) are connected with the support grooves (11) at the left part and the right part of the upper gate (7) in an up-down sliding mode, a horizontal and closed air bag (14) is arranged at the upper part of the floating gate (12), an air charging device (15) is arranged on the floating gate (12), an air charging nozzle of the air charging device (15) is communicated with the air bag (14), a first electric winch (16) is arranged on the dam body (1), a first cable (17) is wound on the first electric winch (16), the tail end of the first cable (17) is fixed with the upper gate (7), a power generation part (18) is jointly arranged on the floating gate (12) and the upper gate (7), the dam body (1) is provided with a dredging part (19).

2. The water blocking dam for river construction according to claim 1, wherein: the utility model provides a power generation part (18) is including last generator (20), last impeller (21), rack (22), well generator (23), gear (24), generator (25) down, impeller (26) down, floating gate (12) front end is fixed with horizontally last generator (20), the input shaft coaxial coupling of last generator (20) has horizontally last impeller (21), floating gate (12) front end is fixed with vertical rack (22), last gate (7) front end is fixed with well generator (23), the input shaft coaxial coupling of well generator (23) has gear (24), gear (24) mesh with rack (22), it is fixed with horizontally generator (25) down to go up gate (7) front end, the input shaft coaxial coupling of generator (25) has horizontally lower impeller (26).

3. The water blocking dam for river water construction according to claim 2, wherein: the dredging part (19) comprises a supporting roller (27), a guide groove (28), a placing groove (29), a protruding table (30), a storage hopper (31), a bushing plate (32), a traction rod (33), a dragging frame (34), a traction groove (35), a positioning hole (36), a salvaging groove (37), a drainage hole (38), a positioning pin (39), a second electric winch (40) and a second cable (41), the lower part of the lower gate (8) is rotationally connected with the horizontal supporting roller (27), the left end and the right end of the through groove (2) are respectively embedded with the guide groove (28), the guide grooves (28) incline upwards backwards, the bottoms of the bottom ends of the through grooves (2) are respectively provided with the horizontal placing groove (29), the bottoms of the two guide grooves (28) are communicated with the left part and the right part of the placing groove (29), the front part of the placing groove (29) is provided with the circular arc-shaped and horizontal protruding table (30), the protruding table (30) points to the direction of the placing groove (29), the upper middle upper part of the placing groove (29) is provided with the horizontal placing groove (29), the horizontal placing groove (31) is connected with the horizontal bushing plate (31), the horizontal bushing plate (32) is connected with the horizontal bushing plate (32) in a sliding way, the front end of the horizontal bushing plate (31) is connected with the horizontal bushing plate (31), the two traction rods (33) are coaxial, the guide grooves (28) are connected with the traction frame (34) in an up-down sliding manner, two horizontal traction grooves (35) are formed in the bottom of the traction frame (34), the traction grooves (35) are in alternate insertion connection with the two traction rods (33), the traction grooves (35) are respectively arranged at the left part and the right part of the traction frame (9), a plurality of positioning holes (36) are formed in the upper part of the traction frame (34), a horizontal salvaging groove (37) is fixedly formed in the upper part of the rear end of the floating gate (12), a plurality of drainage holes (38) are formed in the left part and the right part of the salvaging groove (37), a plurality of vertical positioning pins (39) are fixedly arranged at the bottom end of the salvaging groove (37), the positioning pins (39) can be in corresponding insertion connection with the positioning holes (36) at the same time, a first electric winch (16) is fixedly arranged at the upper part of the guide groove (28) at the left part of the dam body (1), a second electric winch (40) is fixedly arranged at the upper part of the guide groove (28) at the right part of the dam body (1), and a second winch (41) is fixedly provided with a second winch (41).

4. A barrage for river construction according to claim 3, wherein: the stepping motor (3), the air charging device (15), the first electric winch (16), the upper generator (20), the middle generator (23), the lower generator (25) and the second electric winch (40) are electrically connected with an external controller and a power supply together, when the stepping motor (3) rotates synchronously, the upper gate (7) and the lower gate (8) can swing forwards or backwards through sliding connection of the supporting bar (6) and the supporting groove (11), the air charging device (15) can charge air into the air bag (14) and can control the inlet and outlet of air in the air bag (14), when the first electric winch (16) is used for retracting the first cable (17), the upper gate (7) can slide up and down along the supporting bar (6), when the upper gate (7) slides up to a certain height along the supporting bar (6), the lower gate (8) can be dragged up along the supporting bar (6) through the clearance plug connection of the pulling frame (9) and the pulling bulge (10), the lower gate (8) can be dragged down, the left and right end and the right end of the lower gate (8) can be attached to the left end and the right end of the lower gate (8) under the action of the sealing groove (34) and the right end of the lower gate (2) can be attached to the right end of the lower end of the gate (2), the supporting roller (27) at the bottom of the lower gate (8) can be in rolling friction with the bottom end of the through groove (2) under the action of gravity when the lower gate is inclined forwards and downwards, the upper impeller (21) is positioned above the front part of the floating gate (12), the lower impeller (26) is positioned above the front part of the lower gate (8), the floating gate (12) can enable the positioning hole (36) to be coaxial with the positioning pin (39) when the floating gate (7) is inclined to a certain angle to the right and the upper, the second electric winding machine (40) can enable the dragging frame (34) to slide up and down along the guide groove (28) when the second cable (41) is retracted and released, when the dragging frame (34) slides upwards along the guide groove (28) and the positioning hole (36) and the positioning pin (39) are coaxial, the positioning pin (39) and the positioning hole (36) are spliced and further drag the floating gate (12) and the salvaging groove (37) to move upwards and rightwards, when the dragging frame (34) slides upwards along the guide groove (28), the bushing plate (32) can be unfolded leftwards upwards by utilizing the cooperation of the dragging groove (35) and the dragging rod (33) and then drives the storage hopper (31) to slide upwards along the guide groove (28), and the density of parts in the device except for the air bag (14) is less than that of water, and the density of other parts is greater than that of water.