Combined intake tower structure of multi-functional tunnel entrance combined arrangement

Abstract

The utility model discloses a kind of combined water intake tower structures of multi-functional tunnel import merging arrangement, including first flow channel, second flow channel and third flow channel, first flow channel is set in the bottom of water intake tower, its import is provided with plugging gate and the plugging concrete located in the rear side of the plugging gate, outlet is connected with diversion tunnel;Second flow channel is used for flood discharge, sand discharge, emptying, its import is located in the middle of water intake tower, outlet is communicated with first flow channel, and smooth curve structure is formed from top to bottom along water flow direction in middle part;Third flow channel is used for reservoir water diversion, its import is located in upper portion of water intake tower, and outlet is communicated with first flow channel;Wherein, the import of first two third flow channels is located in the water face of water intake tower, and the connecting point of second flow channel, third flow channel and first flow channel is located in the rear side of the plugging concrete.The utility model occupies less land, and function is complete, improves the comprehensive benefit of water conservancy project, facilitates operation management, and reduces engineering investment.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, and in particular to a combined water intake tower structure with a multifunctional tunnel inlet arrangement. Background Technology

[0002] In the construction of water conservancy and hydropower projects, diversion tunnels are used to guide water flow during the construction period, ensuring the smooth progress of the main projects such as dams; venting tunnels play a crucial role when the reservoir needs to be emptied for inspection, maintenance, or to cope with special circumstances; flood discharge and sediment flushing tunnels not only undertake the task of flood discharge, reducing the impact of floods on dams and other structures, but also, to a certain extent, remove silt accumulated in the reservoir to maintain its effective capacity; and water diversion tunnels are responsible for diverting water from the reservoir to power plants or other water-using areas, providing a water source for energy production or water supply. Traditionally, these tunnels and their intake tower structures are often designed and constructed independently, which not only occupies a lot of space, increases project investment and construction difficulty, but may also cause significant disturbance to the surrounding environment, making project management and maintenance more difficult, requiring more equipment and manpower, and increasing operating costs. Therefore, developing an intake tower structure that can organically combine the inlets of multiple functional tunnels is of significant practical importance. Summary of the Invention

[0003] To address the numerous problems arising from the dispersed arrangement of water inlets for different functional chambers in existing technologies, this utility model provides a combined water intake tower structure with a combined arrangement of multifunctional tunnel inlets, specifically employing the following technical solution:

[0004] The multifunctional tunnel inlet combined intake tower structure of this utility model includes a first flow channel, a second flow channel, and a third flow channel. The first flow channel is located at the bottom of the intake tower, and a sealing gate and sealing concrete are provided at the inlet of the first flow channel. The outlet of the first flow channel is connected to the diversion tunnel. The second flow channel is used for flood discharge, sediment discharge, and venting. Its inlet is located in the middle of the intake tower, and its outlet is connected to the first flow channel. The middle part forms a smooth curved structure from top to bottom along the water flow direction. The third flow channel is used for reservoir water diversion. Its inlet is located in the upper part of the intake tower, and its outlet is connected to the first flow channel. The inlets of the first, second, and third flow channels are all located on the water-facing side of the intake tower. The connection points between the second and first flow channels and between the third and first flow channels are all located behind the sealing concrete.

[0005] Preferably, the axes of the first flow channel and the second flow channel are located in the same vertical plane, and the axis of the third flow channel is parallel to the plane containing the axes of the first flow channel and the second flow channel.

[0006] Preferably, a vertical shaft and a horizontal flow channel structure are provided between the inlet and outlet of the third flow channel.

[0007] Preferably, the water inlet tower is provided with a cavity structure located below the inlet section of the third flow channel, and the cavity structure is located on the front side of the vertical shaft.

[0008] Preferably, a maintenance gate and an emergency gate are provided at the inlet of the second flow channel.

[0009] Preferably, the inlet elevation of the second channel is determined based on the reservoir siltation elevation.

[0010] Preferably, a trash rack and an emergency maintenance gate are provided at the inlet of the third flow channel.

[0011] Preferably, the middle and rear sections of the diversion tunnel are provided with a branch pipe section as the water outlet of the third flow channel.

[0012] This utility model provides a multi-functional intake tower structure with a combined arrangement of tunnel inlets. It occupies a small area and offers comprehensive functions. Through the rational design of the internal functional zoning and water intake channels, it integrates multiple water conservancy functions such as irrigation, flood discharge, dewatering, and sediment removal, thereby improving the overall benefits of water conservancy projects. Because this intake tower can simultaneously meet the needs of diversion, flood discharge, sediment removal, and dewatering, it not only facilitates operation and management but also reduces project investment. This utility model is particularly suitable for intake tower structures in water conservancy projects where diversion tunnels are converted into multi-functional chambers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the AA cross-section.

[0015] Figure 3 yes Figure 1 A schematic diagram of the BB cross-section.

[0016] Figure 4 yes Figure 2 and Figure 3 Cross-sectional view of section I-I.

[0017] Figure 5 yes Figure 2 and Figure 3 Cross-sectional view of section II-II.

[0018] Figure 6 yes Figure 2 and Figure 3 Cross-sectional view of section III-III.

[0019] Figure 7 yes Figure 2 and Figure 3 Cross-sectional view of section IV-IV. Detailed Implementation

[0020] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific construction processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0021] like Figure 1-7 As shown, the combined intake tower structure of the multifunctional tunnel inlet of this utility model, by setting up a first flow channel 1, a second flow channel 2, and a third flow channel 3, realizes the functions of a diversion tunnel, a flood discharge / sand removal / venting tunnel, and a water diversion tunnel. Details are as follows:

[0022] The first flow channel 1 is located at the bottom of the water-facing side of the intake tower M, with a blocking gate 11 at its inlet and its outlet connected to the diversion tunnel. During the diversion period, the blocking gate 11 remains open to allow water to flow smoothly into the diversion tunnel. After the diversion period ends, the blocking gate 11 is lowered, and the reservoir begins initial water storage. At the same time, the sealing concrete 12 behind the blocking gate 11 is constructed to ensure that the flood discharge and sediment flushing tunnel can be reconstructed before the flood season.

[0023] The second channel 2 is used for flood discharge, sediment removal, and venting, and its axis is located in the same vertical plane as the axis of the first channel 1. Normally, the inlet is located in the middle of the water-facing side of the intake tower M, and is a pressurized inlet, equipped with a maintenance gate 21 and an emergency gate 22. After the emergency gate 22, a smooth curve structure is formed from top to bottom along the water flow direction. To facilitate smoother flood discharge and sediment removal, the smooth curve in the middle of the second channel 2 often employs... Figure 2 The "Dragon Head Rising" 23 structure is shown. The outlet of the second channel 2 is connected to the rear side of the sealing concrete 12 of the first channel 1, and flood discharge and sediment removal are carried out through the diversion tunnel. The inlet size of the second channel 2 is determined in conjunction with the flow rates for flood discharge and venting, and the inlet elevation of the second channel 2 is determined based on the reservoir siltation elevation. During the flood season, flood discharge and sediment removal can be carried out according to the flood flow rate to ensure that the inlet of the upper water diversion tunnel is clear. During the reservoir impoundment period, the arc-shaped working gate set at the outlet of the diversion tunnel is closed, and only the upper water diversion tunnel draws water. When it is necessary to vent for maintenance or to deal with special circumstances, the maintenance gate 21 and the emergency gate 22 are opened to vent the reservoir. During construction, the first half of the "Dragon Head Rising" 23 section is constructed simultaneously during the construction of the first channel 1. When the first channel 1 is sealed, the bottom curve of the "Dragon Head Rising" 23 section is formed by the sealing concrete 12.

[0024] The third flow channel 3 is used for reservoir water diversion, and its axis is set parallel to the plane containing the axes of the first flow channel 1 and the second flow channel 2. The inlet of the third flow channel 3 is located above the water-facing surface of the intake tower M, and is equipped with a trash rack 31 and an emergency maintenance gate 32. The outlet of the third flow channel 3 is connected to the rear side of the sealing concrete 12 of the first flow channel 1, allowing the reservoir water diverted through the third flow channel 3 to enter the diversion tunnel, realizing the "water diversion tunnel" function of the diversion tunnel, thereby reducing the amount of engineering work. Furthermore, a branch pipe section for diversion is also set in the middle or rear section of the diversion tunnel, and the branch pipe section serves as the water outlet of the third flow channel 3 (i.e., a separate outlet is set for the upper water diversion tunnel). In this embodiment, the inlet and outlet of the third flow channel 3 are connected by a vertical shaft 33 and a horizontal flow channel 34. Since the inlet of the third flow channel 3 is relatively high, in order to save on the amount of work, a cavity structure 35 is set below the inlet section of the third flow channel 3 and between the elevation of the bottom plate of the water tower M. The cavity structure 35 is located in front of the vertical shaft 33.

[0025] During the design phase, a suitable construction location for the intake tower M was first selected based on the actual topography, geological conditions, and engineering planning requirements. Then, detailed geological surveys and related calculations were conducted to preliminarily determine the structural dimensions of the intake tower M. The structural dimensions of the first channel 1 and its internal gates were determined based on parameters such as the design flow rate during the diversion period. The structural dimensions of the second channel 2 and its internal gates were determined based on the flow rates for flood discharge and venting. The structural dimensions of the third channel 3 and its internal gates were determined based on the water diversion flow rate from the reservoir.

[0026] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A combined water intake tower structure with integrated inlet arrangement for a multifunctional tunnel, characterized in that: The system includes a first flow channel, a second flow channel, and a third flow channel. The first flow channel is located at the bottom of the intake tower, and a sealing gate and sealing concrete are installed at the inlet of the first flow channel. The outlet of the first flow channel is connected to the diversion tunnel. The second flow channel is used for flood discharge, sediment discharge, and venting. Its inlet is located in the middle of the intake tower, and its outlet is connected to the first flow channel. The middle section forms a smooth curved structure from top to bottom along the water flow direction. The third flow channel is used for reservoir water intake. Its inlet is located at the upper part of the intake tower, and its outlet is connected to the first flow channel. The inlets of the first, second, and third flow channels are all located on the water-facing side of the intake tower. The connection points between the second and first flow channels and between the third and first flow channels are all located behind the sealing concrete.

2. The combined intake tower structure of the multi-functional tunnel intake merging arrangement according to claim 1, characterized in that: The axes of the first and second flow channels are located in the same vertical plane, and the axis of the third flow channel is parallel to the plane containing the axes of the first and second flow channels.

3. The combined intake tower structure of the multi-functional tunnel intake merging arrangement according to claim 2, characterized in that: A vertical shaft and a horizontal flow channel structure are provided between the inlet and outlet of the third flow channel.

4. The combined water intake tower structure with integrated arrangement of multifunctional tunnel inlets according to claim 3, characterized in that: The water inlet tower is equipped with a cavity structure located below the inlet section of the third flow channel, and the cavity structure is located on the front side of the vertical shaft.

5. The combined intake tower structure of the multi-functional tunnel intake merging arrangement according to claim 1, characterized in that: The inlet of the second flow channel is equipped with a maintenance gate and an emergency gate.

6. The combined intake tower structure of the multi-functional tunnel intake merging arrangement according to claim 1, characterized in that: The inlet elevation of the second channel is determined based on the reservoir siltation elevation.

7. The combined intake tower structure of the multi-functional tunnel intake merging arrangement according to claim 1, characterized in that: The inlet of the third flow channel is equipped with a trash rack and an emergency maintenance gate.

8. The combined water intake tower structure with integrated arrangement of multifunctional tunnel inlets according to claim 1, characterized in that: The middle and rear sections of the diversion tunnel are provided with a branch pipe section as the water outlet of the third flow channel.

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