Hydro-junction structure

Abstract

The invention relates to the technical field of hydraulic engineering, in particular to a hydro-junction structure which comprises an upstream reservoir and a downstream river channel, the upstream reservoir and the downstream river channel are connected through a middle channel, and the middle channel comprises a first branch channel and a second branch channel. The upstream of the first tributary channel and the upstream of the second tributary channel are communicated to form a diversion port, the downstream of the first tributary channel is converged into the downstream river channel, and the ship lift is arranged at the convergence port between the first tributary channel and the downstream river channel; and a water retaining overflow dam is arranged at the downstream of the second branch channel. The middle channel is designed to be the two branch channels for diversion, the upstream portions of the two branch channels are communicated to form the diversion opening, water flow can flow into the two branch channels respectively, and when passing through the diversion opening, the flow speed and impact force can be reduced under the sharing of the second branch channel and the water retaining overflow dam, so that the diversion effect is improved. The influence of water flow on the ship lift is reduced to a great extent, and normal operation of the ship lift and normal navigation of a navigation channel are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and particularly to a water conservancy pivot structure. Background Art

[0002] In existing water conservancy facilities, if it is necessary to realize the navigation of ships between the upstream reservoir and the downstream river course, a ship lock is usually built between the upstream reservoir and the downstream river course, and ships can travel back and forth between the upstream reservoir and the downstream river course through the ship lock; however, for the case where the water head drop between the upstream reservoir and the downstream river course is relatively large, a single ship lock facility is difficult to meet the navigation requirements of ships. For example, the water head drop between the Guangxi Baise Reservoir and the Youjiang River course downstream of it is as high as more than a hundred meters, and it is necessary to realize the navigation of thousand-ton ships between the two. In the case where the navigation requirements with too large a water head drop cannot be realized only by using the ship lock facility, a ship lift device needs to be used to meet the ship navigation with a relatively large water head drop. However, the ship lift has very high requirements for the smoothness of the water flow. If the water flow in the waterway fluctuates greatly, it will affect the entry and exit of ships in the ship lift. In an environment with a large water head drop, the regulation of the reservoir water level will inevitably cause the water flow in the waterway to fluctuate greatly, resulting in the ship lift being unable to work properly, which is specifically manifested in the following points: 1. Difficult positioning: When the water flow speed is too fast or there is turbulence, it is difficult for ships to accurately enter or exit the ship's chamber of the ship lift, which may lead to collisions with the chamber body or the track, increasing the difficulty of ships entering and exiting the ship lift; 2. Decreased stability: The water body inside and outside the ship lift shakes, which will cause the ship to rub against or even capsize the chamber body of the ship's chamber; in addition, during the lifting process, the mechanical system will bear additional dynamic loads, and the resulting vibration will accelerate the fatigue wear of the key components of the mechanical system, reducing the service life of the equipment.

[0003] In view of the above technical problems, it is urgent to improve the water conservancy pivot facilities with a large water head drop between the upstream reservoir and the downstream river course and using a ship lift device to solve them. Summary of the Invention

[0004] The purpose of the present invention is to overcome the technical problem that when a ship lift is used for navigation between an upstream reservoir and a downstream river course with a large water head drop in the prior art, it is impossible to avoid the excessive water flow fluctuation in the waterway from affecting the normal operation of the ship lift, and to provide a water conservancy pivot structure.

[0005] The present invention provides a water conservancy project structure, which includes an upstream reservoir and a downstream river channel. The upstream reservoir and the downstream river channel are connected by an intermediate waterway. The intermediate waterway includes a first tributary waterway and a second tributary waterway. The upstream of the first tributary waterway and the upstream of the second tributary waterway are connected to form a diversion port. The downstream of the first tributary waterway flows into the downstream river channel, and a ship lift is arranged at the confluence between the first tributary waterway and the downstream river channel; a water retaining overflow dam is arranged at the downstream of the second tributary waterway.

[0006] Due to the geographical environment with a high water head drop, it is necessary to use a ship lift to achieve navigation in the navigation channel between the upstream reservoir and the downstream river channel. However, the environment with a high water head drop will also bring large water flow fluctuations to the water head regulation of the waterway, which will have an adverse impact on the normal operation of the ship lift. To solve this technical problem, the present invention designs the intermediate waterway as two tributary waterways for diversion, arranges the ship lift at the confluence between one tributary waterway and the downstream river channel, and sets a water retaining overflow dam at the downstream of the other tributary waterway. The upstream of the two tributary waterways is connected to form a diversion port. When the water in the reservoir flows into the intermediate waterway, it can be diverted at the diversion port. Part of the water flows into the second tributary waterway, and the water retaining overflow dam shares the impact force of the water flow, reducing the water flow fluctuations and making it tend to be stable; the other part of the water can flow into the first tributary waterway. When it flows through the diversion port, it can also reduce the flow rate and impact force under the influence of the water flow in the second tributary waterway and the sharing of the water retaining overflow dam, making the water flow reaching the ship lift tend to be stable, avoiding large fluctuations, and greatly reducing the impact of the water flow on the ship lift, ensuring the normal operation of the ship lift and the normal navigation of the waterway.

[0007] Preferably, the intermediate waterway further includes a main waterway. The upstream of the main waterway is connected to the upstream reservoir, and the downstream of the main waterway is connected to the first tributary waterway and the second tributary waterway through the diversion port.

[0008] For the area between the diversion opening and the upstream reservoir, it can be connected to two branch channels through the main channel. The water in the upstream reservoir can first pass through the main channel and be diverted at the diversion opening, and then enter the two branch channels respectively. The length of the main channel depends on the setting position of the diversion opening. The selection of parameters such as the length and width of the main channel and the branch channels needs to be comprehensively determined and evaluated according to actual geographical conditions such as the drop. If the length of the main channel is too long, it means that the position of the diversion opening is downstream, and the length of the branch channels is too short. The flow velocity and impact force of the water in the main channel may be too large, and relying on the relatively short branch channels to share the impact force may reduce the effect of reducing water flow fluctuations; if the length of the main channel is too short, it means that the position of the diversion opening is upstream, and the length of the branch channels is too long. Although the water flow can reduce fluctuations and flow velocity at the diversion opening in the upstream position, there will also be a large drop in the branch channels, causing the flow velocity of the water reaching the ship lift position to increase again, that is, the water flow at the ship lift will still have large fluctuations and will still affect the ship lift. Therefore, it is necessary to reasonably design the parameters of the main channel and the branch channels and determine the appropriate position of the diversion opening to achieve the best effect of reducing water flow fluctuations.

[0009] Preferably, the direction of the main channel is the same as that of the second branch channel, and the first branch channel is perpendicular to the main channel.

[0010] The direction of the main channel can be the same as that of the second branch channel, that is, the main channel can be end-to-end connected with the second branch channel to form a straight channel, or it can be said that there is a 180-degree angle between the main channel and the second branch channel. The first branch channel is perpendicular to the main channel, or it can be said that the first branch channel is perpendicular to the second branch channel. In this way, the main channel, the first branch channel and the second branch channel can form a structure similar to a "T" shape. Under this structural feature, designing specific angles between the main channel, the first branch channel and the second branch channel can maximize the diversion effect of the diversion opening and the effect of sharing the water flow impact force, making the water flow entering the first branch channel tend to be stable to the greatest extent and avoiding adverse effects on the ship lift.

[0011] Preferably, a water-saving ship lock is provided at the connection between the upstream of the main channel and the upstream reservoir.

[0012] There is still a certain water head drop between the main channel and the upstream reservoir. When the water head drop is not large, a water-saving ship lock can be considered to realize navigation between the upstream reservoir and the main channel. Also, according to the requirements of the water head regulation of the upstream reservoir, the operation mode of the water-saving ship lock can be selected to determine whether the upstream reservoir discharges water downstream and the degree of water discharge.

[0013] Preferably, the ship lift is also provided at the connection between the upstream of the main channel and the upstream reservoir.

[0014] A ship lift can also be adopted between the main channel and the upstream reservoir to replace the water-saving ship lock. Since the water in the upstream reservoir is generally stable and generally does not produce large fluctuations, it has little impact on the ship lift itself. Therefore, even if the water head drop between the main channel and the upstream reservoir is not too large, a ship lift with a smaller specification can be adopted to achieve navigation, that is, ship lifts can be adopted respectively upstream and downstream to achieve the navigation mode of "double ship lifts".

[0015] Preferably, a number of mooring dolphins are provided in the main channel.

[0016] When the width of the main channel is relatively wide and in a non-navigable working condition, the water flow in the main channel also tends to be stable at this time, and the mooring dolphins can be used to stop the ship; the mooring dolphins can also be arranged at the shore position of the main channel, so that the ship can be berthed at the shore without affecting the navigation in the middle position of the main channel.

[0017] Preferably, an auxiliary ship lock is also provided at the confluence between the first branch channel and the downstream river course, and the auxiliary ship lock is located downstream of the ship lift.

[0018] The auxiliary ship lock can assist in adjusting the water head between the confluence downstream of the ship lift and the downstream river course, and can avoid the influence of the water level of the downstream river course at high tide or low tide on the downstream position of the ship lift.

[0019] Preferably, a first water discharge channel is connected to the second branch channel upstream of the water retaining overflow dam, and the first water discharge channel can divert the second branch channel.

[0020] Preferably, a second water discharge channel is connected to the first branch channel upstream of the ship lift, the downstream of the second water discharge channel is communicated with the downstream river course, and the second water discharge channel can divert the first branch channel.

[0021] Water discharge channels can be arranged on the sides of the first branch channel and the second branch channel to limit the water head of the branch channels. If the water head of the branch channels exceeds the maximum value that can be tolerated, the excess water can be discharged through the water discharge channels to avoid the water level in the branch channels exceeding the highest water head and causing adverse effects on facilities such as navigation, ship locks, and ship lifts.

[0022] Preferably, the middle channel is built using the natural valley terrain.

[0023] Compared with the prior art, the beneficial effects of the present invention are: The present invention provides a water control project structure. By designing the middle waterway into two branch waterways for water diversion, the ship lift is arranged at the confluence between one of the branch waterways and the downstream river channel, and a water retaining overflow dam is arranged downstream of the other branch waterway. The upstream parts of the two branch waterways are connected to form a diversion port. When the water in the reservoir flows into the middle waterway, it can be diverted at the diversion port. Part of the water flows into the second branch waterway, and the water retaining overflow dam shares the impact force of the water flow, reducing the water flow fluctuation and making it tend to be stable. Another part of the water can flow into the first branch waterway. When it flows through the diversion port, it can also reduce the flow rate and impact force under the influence of the water flow in the second branch waterway and the sharing of the water retaining overflow dam, making the water flow reaching the ship lift tend to be stable, avoiding large fluctuations, and greatly reducing the impact of the water flow on the ship lift, ensuring the normal operation of the ship lift and the normal navigation of the waterway. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic plan view of the water control project structure of the present invention.

[0025] Reference numerals in the figure: 1. Upstream reservoir, 2. Downstream river channel, 3. Middle waterway, 31. First branch waterway, 32. Second branch waterway, 33. Main waterway, 331. Berthing pier, 34. Diversion port, 35. Confluence, 36. First water discharge channel, 37. Second water discharge channel, 4. Ship lift, 5. Water retaining overflow dam, 6. Water-saving ship lock, 7. Auxiliary ship lock. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0027] In the description of the specific embodiments of the present invention, without special explanation, the expression terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / equipment is usually used and placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0028] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0029] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0030] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation of more than 9.

[0031] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / limited, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, screw connection, etc. Such a connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0032] Embodiment This embodiment provides a water conservancy project structure.

[0033] Figure 1 It is a schematic plan view of the water conservancy project structure of the present invention.

[0034] As Figure 1As shown in the figure, the water conservancy project structure described in this embodiment may include an upstream reservoir 1 and a downstream river channel 2. The upstream reservoir 1 and the downstream river channel 2 are connected by an intermediate waterway 3. The intermediate waterway 3 includes a first branch waterway 31 and a second branch waterway 32. The upstream of the first branch waterway 31 and the upstream of the second branch waterway are connected to form a diversion port 34. The downstream of the first branch waterway 31 flows into the downstream river channel 2. A ship lift 4 is arranged at the confluence port 35 between the first branch waterway 31 and the downstream river channel 2. A water retaining overflow dam 5 is arranged downstream of the second branch waterway 32.

[0035] Due to the geographical environment with a high water head drop, a ship lift 4 must be used to achieve navigation in the navigation channel between the upstream reservoir 1 and the downstream river channel 2. However, the environment with a high water head drop will also cause large water flow fluctuations in the water head regulation of the waterway, which will have an adverse impact on the normal operation of the ship lift 4. To solve this technical problem, the present invention designs the intermediate waterway 3 as two branch waterways for water diversion. The ship lift 4 is arranged at the confluence port 35 between one of the branch waterways and the downstream river channel 2, and a water retaining overflow dam 5 is arranged downstream of the other branch waterway. The upstream of the two branch waterways is connected to form a diversion port 34. When the water in the reservoir flows into the intermediate waterway 3, it can be diverted at the diversion port 34. Part of the water flows into the second branch waterway 32, and the water retaining overflow dam 5 shares the impact force of the water flow, reducing the water flow fluctuations and making it tend to be stable. Another part of the water can flow into the first branch waterway 31. When it flows through the diversion port 34, it can also be affected by the water flow in the second branch waterway 32 and shared by the water retaining overflow dam 5, reducing the flow rate and impact force, making the water flow reaching the ship lift 4 tend to be stable, avoiding large fluctuations, and greatly reducing the impact of the water flow on the ship lift 4, ensuring the normal operation of the ship lift 4 and the normal navigation of the waterway.

[0036] In this embodiment, the intermediate waterway 3 further includes a main waterway 33. The upstream of the main waterway 33 is connected to the upstream reservoir 1, and the downstream of the main waterway 33 is connected to the first branch waterway 31 and the second branch waterway 32 through the diversion port 34.

[0037] For the area between the diversion port 34 and the upstream reservoir 1, it can be connected to two branch channels through the main channel 33. The water in the upstream reservoir 1 can first pass through the main channel 33, be diverted at the diversion port 34, and then enter the two branch channels respectively. The length of the main channel 33 depends on the setting position of the diversion port 34. The selection of parameters such as the length and width of the main channel 33 and the branch channels needs to be comprehensively determined and evaluated according to actual geographical conditions such as the drop. If the length of the main channel 33 is too long, it means that the position of the diversion port 34 is downstream, and the length of the branch channels is too short. The flow velocity and impact force of the water in the main channel 33 may be too large, and relying on the relatively short branch channels to share the impact force may reduce the effect of reducing water flow fluctuations; if the length of the main channel 33 is too short, it means that the position of the diversion port 34 is upstream, and the length of the branch channels is too long. Although the water flow can reduce fluctuations and flow velocity at the diversion port 34 in the upstream position, there will also be a large drop in the branch channels, causing the flow velocity of the water reaching the ship lift 4 to increase again, that is, the water flow at the ship lift 4 will resume large fluctuations and still affect the ship lift 4; therefore, it is necessary to reasonably design the parameters of the main channel 33 and the branch channels and determine the appropriate position of the diversion port 34 to achieve the best effect of reducing water flow fluctuations.

[0038] Optionally, the direction of the main channel 33 is the same as that of the second branch channel 32, and the first branch channel 31 is perpendicular to the main channel 33.

[0039] The direction of the main channel 33 can be the same as that of the second branch channel 32, that is, the main channel 33 can be butt-jointed with the second branch channel 32 end to end to form a straight channel, or it can be said that there is a 180-degree angle between the main channel 33 and the second branch channel 32, and the first branch channel 31 is perpendicular to the main channel 33, or it can be said that the first branch channel 31 is perpendicular to the second branch channel 32. In this way, the main channel 33, the first branch channel 31, and the second branch channel 32 can form a structure similar to a "T" shape. Under this structural feature, designing specific angles between the main channel 33, the first branch channel 31, and the second branch channel 32 can maximize the diversion effect of the diversion port 34 and the effect of sharing the water flow impact force, making the water flow entering the first branch channel 31 tend to be stable to the greatest extent and avoiding adverse effects on the ship lift 4.

[0040] In this embodiment, a water-saving ship lock 6 is provided at the connection between the upstream of the main channel 33 and the upstream reservoir 1.

[0041] There is still a certain water head drop between the main channel 33 and the upstream reservoir 1. When the water head drop is not large, a water-saving ship lock 6 can be considered to realize the navigation between the upstream reservoir 1 and the main channel 33. Also, according to the requirements of the water head regulation of the upstream reservoir 1, the operation mode of the water-saving ship lock 6 can be selected to determine whether the upstream reservoir 1 discharges water downstream and the degree of water discharge.

[0042] In this embodiment, the ship lift 4 is also arranged at the connection between the upstream of the main channel 33 and the upstream reservoir 1.

[0043] A ship lift 4 can also be used to replace the water-saving ship lock 6 between the main channel 33 and the upstream reservoir 1. Since the water in the upstream reservoir 1 is generally stable and generally does not produce large fluctuations, and it has little impact on the ship lift 4 itself. Therefore, even if the water head drop between the main channel 33 and the upstream reservoir 1 is not too large, a smaller specification ship lift 4 can be used to realize navigation, that is, ship lifts 4 can be used respectively upstream and downstream to realize the navigation mode of "double ship lifts 4".

[0044] Optionally, a number of mooring dolphins 331 are provided on the main channel 33.

[0045] When the width of the main channel 33 is relatively wide and in a non-navigable working condition, the water flow in the main channel 33 also tends to be stable at this time, and the mooring dolphins 331 can be used to realize the ship's stop; the mooring dolphins 331 can also be arranged at the shore side position of the main channel 33, which can enable the ship to berth at the shore without affecting the navigation in the middle position of the main channel 33.

[0046] In this embodiment, an auxiliary ship lock 7 is also provided at the confluence 35 between the first branch channel 31 and the downstream river channel 2, and the auxiliary ship lock 7 is located downstream of the ship lift 4.

[0047] The auxiliary ship lock 7 can assist in adjusting the water head between the confluence 35 downstream of the ship lift 4 and the downstream river channel 2, and can avoid the influence of the water level of the downstream river channel 2 at high tide or low tide on the downstream position of the ship lift 4.

[0048] In this embodiment, a first water discharge channel 36 is connected to the second branch channel 32 upstream of the water retaining overflow dam 5, and the first water discharge channel 36 can divert the second branch channel 32.

[0049] In this embodiment, a second water discharge channel 37 is connected to the first branch channel 31 upstream of the ship lift 4, and the downstream of the second water discharge channel 37 is communicated with the downstream river channel 2, and the second water discharge channel 37 can divert the first branch channel 31.

[0050] A drainage channel can be set on the side of the first branch channel 31 and the second branch channel 32 to limit the water head of the branch channel. If the water head of the branch channel exceeds the maximum value that can be borne, the excess water can be discharged through the drainage channel to prevent the water level in the branch channel from exceeding the highest water head and causing adverse effects on facilities such as navigation, ship locks, and ship lifts 4.

[0051] In this embodiment, the middle channel 3 is constructed by utilizing the natural valley terrain; for example, when constructing the middle channel 3 between the Baise Reservoir and the downstream Youjiang River, the natural valley terrain can be exactly utilized for construction. The natural valley can provide a natural trend for the middle channel 3. The valley terrain slopes from high to low from the Baise Reservoir to the Youjiang River. The middle channel 3 can be naturally formed in the valley. The first branch channel 31, the second branch channel 32, and the main channel 33 can all be constructed by making the most of the valley terrain to the greatest extent, thereby reducing the excavation volume and engineering construction volume of the channel construction; of course, outside the Baise Reservoir project, other water conservancy projects with similar terrain features can be excavated and constructed in a similar manner, and the present invention does not make specific limitations on this.

[0052] In summary, the present invention provides a water conservancy hub structure. By designing the middle channel into two branch channels for water diversion, the ship lift is arranged at the confluence between one branch channel and the downstream river, and a water retaining overflow dam is arranged downstream of the other branch channel. The upstream of the two branch channels is connected to form a diversion port. When the water in the reservoir flows into the middle channel, it can be diverted at the diversion port. Part of the water flows into the second branch channel, and the water retaining overflow dam shares the impact force of the water flow, reducing the water flow fluctuation and making it tend to be stable; the other part of the water can flow into the first branch channel. When it flows through the diversion port, it can also reduce the flow rate and impact force under the influence of the water flow in the second branch channel and the sharing of the water retaining overflow dam, making the water flow reaching the ship lift tend to be stable, avoiding large fluctuations, and greatly reducing the impact of the water flow on the ship lift, ensuring the normal operation of the ship lift and the normal navigation of the channel.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water control project structure, characterized in that, It includes an upstream reservoir (1) and a downstream river channel (2). The upstream reservoir (1) and the downstream river channel (2) are connected by an intermediate waterway (3). The intermediate waterway (3) includes a first branch waterway (31) and a second branch waterway (32). The upstream of the first branch waterway (31) and the upstream of the second branch waterway (32) are connected and communicate to form a diversion port (34). The downstream of the first branch waterway (31) flows into the downstream river channel (2). A ship lift (4) is arranged at the confluence (35) between the first branch waterway (31) and the downstream river channel (2). A water retaining overflow dam (5) is arranged at the downstream of the second branch waterway (32).

2. The water control project structure according to claim 1, characterized in that The intermediate waterway (3) further includes a main waterway (33). The upstream of the main waterway (33) is connected to the upstream reservoir (1), and the downstream of the main waterway (33) communicates with the first branch waterway (31) and the second branch waterway (32) through the diversion port (34).

3. The water conservancy project structure according to claim 2, characterized in that, The direction of the main waterway (33) is the same as that of the second branch waterway (32), and the first branch waterway (31) is perpendicular to the main waterway (33).

4. The water control project structure according to claim 2, wherein, A water-saving ship lock (6) is arranged at the connection between the upstream of the main waterway (33) and the upstream reservoir (1).

5. The water control project structure according to claim 2, characterized in that, The ship lift (4) is also arranged at the connection between the upstream of the main waterway (33) and the upstream reservoir (1).

6. The water conservancy project structure according to claim 2, wherein, A number of ship berthing piers (331) are provided on the main waterway (33).

7. The water conservancy project structure according to any one of claims 1 to 6, characterized in that, An auxiliary ship lock (7) is also arranged at the confluence (35) between the first branch waterway (31) and the downstream river channel (2). The auxiliary ship lock (7) is located downstream of the ship lift (4).

8. The water conservancy project structure according to any one of claims 1 to 6, characterized in that, A first water discharge channel (36) is connected to the second branch waterway (32) upstream of the water retaining overflow dam (5). The first water discharge channel (36) can divert the second branch waterway (32).

9. The water conservancy project structure according to any one of claims 1 to 6, characterized in that, A second water discharge channel (37) is connected to the first branch waterway (31) upstream of the ship lift (4). The downstream of the second water discharge channel (37) communicates with the downstream river channel (2). The second water discharge channel (37) can divert the first branch waterway (31).

10. The water conservancy project structure according to any one of claims 1 to 6, characterized in that, The intermediate waterway (3) is constructed using the natural valley terrain.

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