Tunnel structure giving consideration to wastewater discharge and ecological flow

Abstract

The utility model relates to a tunnel structure giving consideration to wastewater discharge and ecological flow. The method is suitable for the technical field of water conservancy and hydropower engineering. The technical problem to be solved by the application is to provide a tunnel structure giving consideration to both wastewater discharge and ecological flow. According to the technical scheme, the tunnel structure giving consideration to wastewater discharge and ecological flow comprises a diversion tunnel internally provided with a blocking gate used for separating a tunnel section and a downstream river channel section; the ecological drainage steel pipe is arranged in the diversion tunnel and partially embedded in the side wall of the diversion tunnel to bypass the blocking gate, the inlet end is located on one side of the blocking gate and can rotate to adjust water inlet guiding, and the outlet end is located on the other side of the blocking gate; the gate valve structure is arranged at the outlet end of the ecological drainage steel pipe and used for adjusting the drainage flow of the ecological drainage steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, and in particular to a tunnel structure that takes into account both wastewater discharge and ecological flow. Background Technology

[0002] On the one hand, a large amount of wastewater is generated during tunnel construction. This wastewater mainly comes from groundwater seepage, dust washing water from drilling and blasting, and concrete curing wastewater. Therefore, it is necessary to effectively collect, discharge, and treat the wastewater. Traditional wastewater treatment methods often require separate wastewater collection systems and treatment facilities, which not only increases project costs but may also extend the construction period.

[0003] On the other hand, the construction of water conservancy and hydropower projects must consider their impact on downstream river ecosystems, ensuring a certain ecological flow—that is, releasing enough water downstream to maintain the health of the river ecosystem. Insufficient water flow may lead to river drying up, disrupting fish breeding and migration routes, affecting wetland functions, and even causing the extinction of certain species. To ensure ecological flow, ecological discharge tunnels are usually constructed separately within the project, independently arranged from other structures to avoid mutual interference during operation. However, while this method meets the basic requirements of ecological protection, it increases construction costs and time.

[0004] Therefore, how to achieve wastewater discharge and treatment during tunnel construction while ensuring ecological flow during operation to prevent downstream natural rivers from drying up has become an urgent problem to be solved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a tunnel structure that takes into account both wastewater discharge and ecological flow, in response to the above-mentioned problems.

[0006] The technical solution adopted in this utility model is: a tunnel structure that takes into account both wastewater discharge and ecological flow, comprising:

[0007] The diversion tunnel is equipped with sealing gates inside to separate the tunnel section from the downstream river section;

[0008] The ecological water release steel pipe is located inside the diversion tunnel, with part of it buried inside the side wall of the diversion tunnel to bypass the blocking gate. The inlet end is located on one side of the blocking gate and can be rotated to adjust the water inlet direction. The outlet end is located on the other side of the blocking gate.

[0009] The gate valve structure is located at the outlet end of the ecological water discharge steel pipe and is used to regulate the discharge flow of the ecological water discharge steel pipe.

[0010] Using the aforementioned technical means, the inlet end of the ecological water release steel pipe is adjusted to correspond to the water inflow direction according to the different stages of the diversion tunnel. When wastewater is generated during the construction phase inside the diversion tunnel, the inlet end of the ecological water release steel pipe is connected to the wastewater source, and the wastewater generated during construction inside the diversion tunnel is collected and discharged through the ecological water release pipe. When the diversion tunnel is in operation, the inlet end of the ecological water release steel pipe is connected to the ecological flow source, and the ecological flow is introduced into the downstream river channel through the ecological water release pipe, so that even when the dam is closed, sufficient discharge flow can still be maintained to protect the downstream ecological environment.

[0011] In some embodiments, the ecological water discharge steel pipe includes an inlet steel pipe section and a main steel pipe section. The inlet steel pipe section is connected to the inlet end of the main steel pipe section. The inlet steel pipe section and the main steel pipe section are located on both sides of the blocking gate. The inlet steel pipe section can be switched from being arranged parallel to the diversion tunnel to being arranged vertically connected to the top of the diversion tunnel. When the inlet steel pipe section is arranged parallel to the diversion tunnel, it is connected to the wastewater source. When it is arranged vertically connected to the top of the diversion tunnel, it is connected to the ecological flow source. The main steel pipe section is arranged obliquely along the inclination angle of the diversion tunnel. The output end of the main steel pipe section is connected to the diversion wastewater receiving mechanism or the downstream river channel according to the construction or operation stage of the diversion tunnel.

[0012] In some embodiments, when the diversion tunnel is under construction, the inlet steel pipe section is arranged parallel to the diversion tunnel and located at the bottom of the diversion tunnel, which can guide the wastewater generated during construction in the diversion tunnel to the wastewater receiving mechanism via the main steel pipe section.

[0013] When the diversion tunnel is in operation, the inlet steel pipe section is arranged vertically and connected to the reservoir located at the top of the diversion tunnel, which can divert part of the water in the reservoir to the downstream river channel through the main steel pipe section.

[0014] In some embodiments, the diversion tunnel has a tapering structure from the inlet end to the outlet end, the first part of the main steel pipe section is pre-embedded inside the side wall of the diversion tunnel, and the second part of the main steel pipe section is installed at the inner bottom of the diversion tunnel via a support member.

[0015] In some embodiments, the support member is a pier, and multiple piers are arranged at intervals.

[0016] In some embodiments, the central angle of the top arch of the diversion tunnel is 120°.

[0017] The beneficial effects of this utility model are:

[0018] 1. By placing the ecological water release steel pipe inside the diversion tunnel and adjusting the water intake direction by rotating the inlet end of the pipe, the pipe state can be flexibly switched according to the construction and operation status of the diversion tunnel and the actual needs of the downstream river section. This allows the ecological water release steel pipe to focus on wastewater collection during construction and on ensuring ecological flow when the gate is closed during operation. The integrated arrangement of the ecological water release steel pipe and the diversion discharge tunnel achieves the integration of wastewater discharge and ecological flow release functions. This not only solves the wastewater discharge problem during tunnel construction but also ensures the required ecological flow downstream, thereby reducing the increased costs and extended construction period associated with setting up multiple separate facilities. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the facade structure during the construction phase of this application.

[0020] Figure 2 This is a schematic diagram of the facade structure during the operational phase of this application.

[0021] Figure 3 yes Figure 1 Cross-sectional view along the 1-1 direction.

[0022] Figure 4 yes Figure 1 Cross-sectional view along the 2-2 direction.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Imported steel pipe section; 2. Main steel pipe section; 3. Support components; 4. Gate valve structure; 5. Diversion tunnel; 6. Sealing gate.

[0025] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.

[0026] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0028] Combination Figures 1 to 4As shown, this embodiment is a tunnel structure that balances wastewater discharge and ecological flow, including a diversion tunnel 5, an ecological discharge steel pipe, and a gate valve structure 4. The diversion tunnel 5 is equipped with a sealing gate 6 to separate the tunnel section from the downstream river section. The ecological discharge steel pipe is located within the diversion tunnel 5, with its middle portion buried inside the side wall of the diversion tunnel 5 to bypass the sealing gate 6. The inlet end of the ecological discharge steel pipe is located on one side of the sealing gate 6, and this inlet end can be rotated to adjust the water inlet direction, allowing it to be directed towards either wastewater or ecological flow. The outlet end of the ecological discharge steel pipe is located on the other side of the sealing gate 6, and this outlet end can be adjusted to direct the discharged water to a wastewater receiving facility or the downstream river. The outlet end of the ecological discharge steel pipe is equipped with a gate valve structure 4, which can regulate the discharge flow rate of the ecological discharge steel pipe.

[0029] In some implementation schemes, the ecological water discharge steel pipe includes an inlet steel pipe section 1 and a main steel pipe section 2. The inlet end of the main steel pipe section 2 is connected to the inlet steel pipe section 1. The inlet steel pipe section 1 and the main steel pipe section 2 are located on both sides of the sealing gate 6. The inlet steel pipe section 1 can be switched from being arranged in parallel with the diversion tunnel 5 to being arranged at the top of the vertically connected diversion tunnel 5. When the inlet steel pipe section 1 is arranged in parallel with the diversion tunnel 5, it is connected to a wastewater source. When it is arranged at the top of the vertically connected diversion tunnel 5, it is connected to an ecological flow source. The main steel pipe section 2 is arranged obliquely along the inclination angle of the diversion tunnel 5. The output end of the main steel pipe section 2 is connected to the diversion wastewater receiving mechanism or the downstream river channel according to the construction or operation stage of the diversion tunnel 5.

[0030] When the diversion tunnel 5 is under construction, the inlet steel pipe section 1 is arranged parallel to the diversion tunnel 5 and located at the bottom of the diversion tunnel 5. The wastewater source, namely the wastewater generated during construction in the diversion tunnel 5, can be discharged to the wastewater receiving mechanism through the main steel pipe section 2.

[0031] When the diversion tunnel 5 is in operation and the blocking gate 6 is closed, the inlet steel pipe section 1 is arranged vertically and connected to the reservoir located at the top of the diversion tunnel 5. The ecological flow source is the reservoir water body, which can divert part of the water body in the reservoir to the downstream river channel through the main steel pipe section 2.

[0032] The imported steel pipe section 1 can be arranged according to different stages of construction or operation of the diversion tunnel 5. It can effectively divert and discharge wastewater generated during construction and ensure that the reservoir releases enough water to the downstream river channel to maintain the health of the river ecosystem during operation. This provides great flexibility to adapt to changes in demand at different stages.

[0033] In some implementation schemes, the diversion tunnel 5 has a tapering structure from the inlet end to the outlet end, the first part of the main steel pipe section 2 is pre-embedded inside the side wall of the diversion tunnel 5, and the second part of the main steel pipe section 2 is installed at the bottom of the diversion tunnel 5 via the support member 3.

[0034] Furthermore, such as Figure 4 As shown, support member 3 is a pier, and multiple piers are arranged at intervals.

[0035] Using piers as support components 3 and pre-embedding some steel pipes inside the sidewalls enhances the stability of the overall structure. In particular, the design of the tapering structure of the diversion tunnel 5 is more conducive to withstanding water flow pressure and external loads.

[0036] Furthermore, such as Figure 3 and Figure 4 As shown, the central angle of the top arch of the diversion tunnel 5 is 120°.

[0037] The implementation principle of a tunnel structure that balances wastewater discharge and ecological flow is as follows:

[0038] During the construction of diversion tunnel 5, a large amount of wastewater will be generated. The inlet steel pipe section 1 is located at the lowest point, which can effectively collect the wastewater from the bottom of the tunnel and lead it out through the main steel pipe section 2, and cooperate with the wastewater receiving mechanism for treatment or discharge.

[0039] When the diversion tunnel 5 enters the operation period, and the sealing gate 6 inside the diversion tunnel 5 is in a closed state, in order to ensure sufficient ecological flow downstream, the inlet steel pipe section 1 is adjusted to a high position at the top of the diversion tunnel 5 entrance to connect with the reservoir at the top of the diversion tunnel 5, and the water is discharged by gravity using the natural water level difference, and the discharge flow is controlled by the gate valve structure 4.

[0040] Compared to the traditional model where the wastewater collection system and the ecological discharge tunnel are built separately, this application combines the wastewater discharge and ecological discharge functions in a single diversion tunnel 5. By reusing and dynamically adjusting the diversion tunnel 5 and the steel pipe, the space and cost of engineering construction can be effectively saved.

[0041] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A tunnel structure that balances wastewater discharge and ecological flow, characterized in that, include: The diversion tunnel (5) is equipped with a sealing gate (6) inside to separate the tunnel section from the downstream river section; An ecological water discharge steel pipe is installed inside the diversion tunnel (5), and part of it is buried inside the side wall of the diversion tunnel (5) to bypass the blocking gate (6). The inlet end is located on one side of the blocking gate (6), and the inlet end can be rotated to adjust the water intake direction to wastewater source or ecological flow source. The outlet end is located on the other side of the blocking gate (6), and the outlet end can adjust the outflow to the wastewater receiving mechanism or downstream river channel. The gate valve structure (4) is located at the outlet end of the ecological water discharge steel pipe and is used to regulate the discharge flow of the ecological water discharge steel pipe.

2. The tunnel structure according to claim 1, which takes into account both wastewater discharge and ecological flow, is characterized in that: The ecological water discharge steel pipe includes an inlet steel pipe section (1) and a main steel pipe section (2). The inlet end of the main steel pipe section (2) is connected to the inlet steel pipe section (1). The inlet steel pipe section (1) and the main steel pipe section (2) are located on both sides of the blocking gate (6). The inlet steel pipe section (1) can be switched from being arranged parallel to the diversion tunnel (5) to being arranged vertically connected to the top of the diversion tunnel (5). When the inlet steel pipe section (1) is arranged parallel to the diversion tunnel (5), it is connected to the wastewater source. When it is arranged vertically connected to the top of the diversion tunnel (5), it is connected to the ecological flow source. The main steel pipe section (2) is arranged obliquely along the inclination angle of the diversion tunnel (5). The output end of the main steel pipe section (2) is connected to the diversion wastewater receiving mechanism or the downstream river channel according to the construction or operation stage of the diversion tunnel (5).

3. The tunnel structure according to claim 2, which takes into account both wastewater discharge and ecological flow, is characterized in that: When the diversion tunnel (5) is under construction, the inlet steel pipe section (1) is arranged parallel to the diversion tunnel (5) and located at the bottom of the diversion tunnel (5), so that the wastewater generated during construction in the diversion tunnel (5) can be discharged to the wastewater receiving mechanism through the main steel pipe section (2). When the diversion tunnel (5) is in operation and the blocking gate (6) is closed, the inlet steel pipe section (1) is arranged vertically and connected to the reservoir located at the top of the diversion tunnel (5), which can divert part of the water in the reservoir to the downstream river through the main steel pipe section (2).

4. A tunnel structure that balances wastewater discharge and ecological flow according to claim 2, characterized in that: The diversion tunnel (5) has a tapering structure from the inlet end to the outlet end. The first part of the main steel pipe section (2) is pre-embedded inside the side wall of the diversion tunnel (5), and the second part of the main steel pipe section (2) is installed at the bottom of the diversion tunnel (5) via a support member (3).

5. A tunnel structure that balances wastewater discharge and ecological flow according to claim 4, characterized in that: The support member (3) is a pier, with multiple piers arranged at intervals.

6. The tunnel structure of claim 2, wherein: The central angle of the top arch of the diversion tunnel (5) is 120°.

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