A novel relay pressurization structure for a long-distance water diversion tunnel and its operation method

Abstract

The present invention relates to a novel relay pressurization structure for a long-distance water diversion tunnel and its operation method. The object of the present invention is to provide a novel, economical, applicable and safe relay pressurization structure for a long-distance water diversion tunnel and its operation method, so as to achieve reasonable utilization of resources, save project investment and solve the difficult problem of the layout of relay pressurization pump stations for long water diversion tunnels. The technical solution of the present invention is: a novel relay pressurization structure for a long-distance water diversion tunnel, which has a long water diversion tunnel, a water diversion branch tunnel or a construction branch tunnel connecting the tunnel, and a ground pressurization pump station arranged at the entrance of the water diversion branch tunnel or the construction branch tunnel for pressurizing the middle part of the long water diversion tunnel. The pump station inlet pipe of the ground pressurization pump station is connected to the upstream tunnel of the long water diversion tunnel through the water diversion branch tunnel or the construction branch tunnel, and the pump station outlet pipe of the ground pressurization pump station is connected to the downstream tunnel of the long water diversion tunnel through the water diversion branch tunnel or the construction branch tunnel. The present invention is applicable to water conservancy and hydropower projects and municipal projects.

Description

Technical Field

[0001] The present invention relates to a novel relay pressurization structure for a long-distance water diversion tunnel and an operation method thereof, which is applicable to water conservancy and hydropower projects and municipal engineering projects. Background Art

[0002] The safety of urban water supply is the foundation of its social and economic development and a major livelihood guarantee project. With the improvement of people's living standards, there is a strong demand for high-quality water supply. Each major city tries every means to improve the water quality of the main urban water source or adjust the main water source from large rivers to high-quality mountain streams. In the design of water supply projects for mountain rivers, the design of long water diversion tunnels is involved. Due to factors such as terrain restrictions and engineering task requirements, secondary pressurization is required for water supply. Building an underground pump station for in-tunnel pressurization requires excavating an underground powerhouse, which results in large project investment and increased construction risks for large-span underground powerhouse excavation. At the same time, the maintenance of the pump station is not convenient enough. To reduce project investment, construction difficulty, and facilitate the maintenance of the pump station, a ground regulating reservoir is usually added at an appropriate position on the line for secondary pressurization. Given the current difficulties in resettlement and land acquisition, it is particularly important to select the optimal layout of the relay pressurization pump station for situations where the regulating reservoir cannot be arranged. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in view of the above problems, to provide an economic, applicable, and safe novel relay pressurization structure for a long-distance water diversion tunnel and an operation method thereof, so as to achieve reasonable utilization of resources, save project investment, and solve the problem of the layout of the relay pressurization pump station for long water diversion tunnels.

[0004] The technical solution adopted by the present invention is: a novel relay pressurization structure for a long-distance water diversion tunnel, characterized in that it has a long water diversion tunnel, a water diversion branch tunnel or a construction branch tunnel connecting the tunnel, and a ground pressurization pump station arranged at the entrance of the water diversion branch tunnel or the construction branch tunnel for pressurizing the middle part of the long water diversion tunnel. The pump station inlet pipe of the ground pressurization pump station is connected to the upstream tunnel of the long water diversion tunnel through the water diversion branch tunnel or the construction branch tunnel, and the pump station outlet pipe of the ground pressurization pump station is connected to the downstream tunnel of the long water diversion tunnel through the water diversion branch tunnel or the construction branch tunnel.

[0005] A water distribution pipe is arranged in the water diversion branch tunnel or the construction branch tunnel. One end of the water distribution pipe is connected to the upstream tunnel of the long water diversion tunnel, and the other end of the water distribution pipe is connected to the water supply object after passing through a flow regulating valve.

[0006] The water distribution pipe, the pump station inlet pipe, and the pump station outlet pipe are arranged in a triangular shape in the water diversion branch tunnel or the construction branch tunnel.

[0007] The pipe walls of the water distribution pipe, the pump station inlet pipe, and the pump station outlet pipe are backfilled with concrete for fixation.

[0008] Concrete is backfilled and fixed between the pipe walls of the sub-water pipes and the pump station inlet pipe and the inner wall of the long water diversion tunnel, and between the pipe walls of the sub-water pipes, the pump station inlet pipe and the pump station outlet pipe and the inner wall of the sub-water diversion tunnel or the construction branch tunnel.

[0009] A novel relay pressurization structure for a long-distance water diversion tunnel and its operation method, characterized in that:

[0010] 1. The sub-water pipes, the pump station inlet pipe and the pump station outlet pipe are arranged in a pin shape in the sub-water diversion tunnel or the construction branch tunnel;

[0011] 2. The sub-water pipes and the pump station inlet pipe are arranged on the upstream side of the intersection where the long water diversion tunnel is connected to the sub-water diversion tunnel or the construction branch tunnel, and concrete is backfilled and fixed between the pipe walls of the sub-water pipes and the pump station inlet pipe and between the pipe walls and the inner wall of the long water diversion tunnel;

[0012] 3. The pump station outlet pipe is arranged on the downstream side of the intersection where the long water diversion tunnel is connected to the sub-water diversion tunnel or the construction branch tunnel, and concrete is backfilled and fixed between the pipe wall of the pump station outlet pipe and the inner wall of the long water diversion tunnel;

[0013] 4. Concrete is backfilled between the pipe walls of the sub-water pipes, the pump station inlet pipe and the pump station outlet pipe and the inner wall of the sub-water diversion tunnel or the construction branch tunnel;

[0014] 5. The pump station inlet pipe draws water from the long water diversion tunnel into the forebay of the pump station, and after being pressurized by the ground pressurization pump station, it is sent back into the long water diversion tunnel through the pump station outlet pipe arranged in the sub-water diversion tunnel or the construction branch tunnel to continue water supply;

[0015] 6. The other end of the sub-water pipe is connected to the water supply object through a flow regulating valve.

[0016] The beneficial effects of the present invention are as follows: The present invention utilizes the sub-water diversion tunnel or the construction branch tunnel to be later transformed into the input and output pipeline channels of the pump station, and places the pump station at an appropriate position at the entrance of the branch tunnel, realizing the rational utilization of resources, reducing the underground excavation of the plant, eliminating the need to arrange a ground regulating reservoir, saving project investment, effectively solving the problem of the layout of the relay pressurization pump station for the long water diversion tunnel, and the design is economical, applicable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the plan layout diagram of this embodiment.

[0018] Figure 2 is Figure 1 The A-A sectional view of.

[0019] Figure 3 is Figure 1 The B-B sectional view of.

[0020] Figure 4 For Figure 1 C-C cross-sectional view of Specific implementation mode

[0021] As Figures 1 to 4 shown, this embodiment is a new type of relay pressurization structure for long-distance water diversion tunnels, which has a long water diversion tunnel 1, a water diversion branch tunnel or a construction branch tunnel 2 connected to the long water diversion tunnel 1, a water distribution pipe 3, a pump station inlet pipe 4, a pump station outlet pipe 5 and a ground pressurization pump station 6.

[0022] In this embodiment, an appropriate position is selected in the middle of the long water diversion tunnel 1, and the branch tunnel connected to the long water diversion tunnel is used as the water diversion branch tunnel or the construction branch tunnel 2. In the later stage of construction, this branch tunnel is rebuilt into a pipeline channel for the input and output of the pump station, and then a ground pressurization pump station 6 is arranged at an appropriate position at the entrance of the water diversion branch tunnel or the construction branch tunnel 2 (pipeline channel for the input and output of the pump station).

[0023] The water distribution pipe 3, the pump station inlet pipe 4 and the pump station outlet pipe 5 are arranged in a triangular shape in the water diversion branch tunnel or the construction branch tunnel 2. One end of the water distribution pipe 3 is connected to the long water diversion tunnel 1 upstream of the intersection where the long water diversion tunnel 1 is connected to the water diversion branch tunnel or the construction branch tunnel 2, and the other end of the water distribution pipe 3 is connected to the water supply object after passing through the flow regulating valve 7; one end of the pump station inlet pipe 4 is connected to the long water diversion tunnel 1 upstream of the intersection where the long water diversion tunnel 1 is connected to the water diversion branch tunnel or the construction branch tunnel 2, and the other end of the pump station inlet pipe 4 is connected to the pump station forebay of the ground pressurization pump station 6; one end of the pump station outlet pipe 5 is connected to the long water diversion tunnel 1 downstream of the intersection where the long water diversion tunnel 1 is connected to the water diversion branch tunnel or the construction branch tunnel 2, and the other end of the pump station outlet pipe 5 is connected to the ground pressurization pump station 6.

[0024] Among them, the pipe walls of the water distribution pipe 3, the pump station inlet pipe 4 and the pump station outlet pipe 5 are backfilled with concrete for fixation; the pipe walls of the water distribution pipe 3, the pump station inlet pipe 4 and the pump station outlet pipe 5 and the tunnel bodies of the long water diversion tunnel 1 and the water diversion branch tunnel or the construction branch tunnel 2 are backfilled with concrete.

[0025] This embodiment uses the pump station inlet pipe 4 arranged in the water diversion branch tunnel or the construction branch tunnel 2 to draw water from the long water diversion tunnel 1 and introduce it into the pump station forebay. After being pressurized by the ground pressurization pump station 6, it is sent back into the long water diversion tunnel 1 through the pump station outlet pipe 5 arranged in the water diversion branch tunnel or the construction branch tunnel 2 to continue water supply.

[0026] The operation method of a new type of relay pressurization structure for long-distance water diversion tunnels in this embodiment is as follows:

[0027] 1. Arrange the water distribution pipe, the pump station inlet pipe and the pump station outlet pipe in a triangular shape in the water diversion branch tunnel or the construction branch tunnel;

[0028] 2. Arrange the water distribution pipe and the pump station intake pipe on the upstream side of the intersection where the long diversion tunnel 1 is connected to the water distribution branch tunnel or the construction branch tunnel 2, and backfill concrete between the pipe walls of the water distribution pipe and the pump station intake pipe and between the pipe walls and the inner wall of the long diversion tunnel for fixation;

[0029] 3. Arrange the pump station outlet pipe on the downstream side of the intersection where the long diversion tunnel is connected to the water distribution branch tunnel or the construction branch tunnel, and backfill concrete between the pipe wall of the pump station outlet pipe and the inner wall of the long diversion tunnel for fixation;

[0030] 4. Backfill concrete between the pipe walls of the water distribution pipe, the pump station intake pipe and the pump station outlet pipe and the inner wall of the water distribution branch tunnel or the construction branch tunnel;

[0031] 5. The pump station intake pipe draws water from the long diversion tunnel and accesses the pump station forebay. After being pressurized by the ground pressure pump station, it is sent back to the long diversion tunnel through the pump station outlet pipe arranged in the water distribution branch tunnel or the construction branch tunnel to continue water supply;

[0032] 6. The other end of the water distribution pipe is connected to the water supply object through a flow regulating valve.

Claims

1. A relay pressurization structure for a long-distance water diversion tunnel, characterized in that: It has a long diversion tunnel (1), a water diversion branch tunnel or a construction branch tunnel (2) connecting the tunnel, and a ground pressure pumping station (6) arranged at the entrance of the water diversion branch tunnel or the construction branch tunnel (2) for pressurizing the middle part of the long diversion tunnel (1). The pumping station inlet pipe (4) of the ground pressure pumping station (6) is connected to the upstream tunnel of the long diversion tunnel (1) through the water diversion branch tunnel or the construction branch tunnel (2), and the pumping station outlet pipe (5) of the ground pressure pumping station (6) is connected to the downstream tunnel of the long diversion tunnel (1) through the water diversion branch tunnel or the construction branch tunnel (2); A water distribution pipe (3) is arranged in the water diversion branch tunnel or the construction branch tunnel (2). One end of the water distribution pipe (3) is connected to the upstream tunnel of the long diversion tunnel (1), and the other end of the water distribution pipe (3) is connected to the water supply object after passing through a flow regulating valve (7); Concrete is backfilled and fixed between the pipe walls of the water distribution pipe (3), the pumping station inlet pipe (4) and the pumping station outlet pipe (5); Concrete is backfilled and fixed between the pipe walls of the water distribution pipe (3) and the pumping station inlet pipe (4) and the inner wall of the long diversion tunnel (1), and between the pipe walls of the water distribution pipe (3), the pumping station inlet pipe (4) and the pumping station outlet pipe (5) and the inner wall of the water diversion branch tunnel or the construction branch tunnel (2).

2. The relay pressurization structure for a long-distance water diversion tunnel according to claim 1, wherein: The water distribution pipe (3), the pumping station inlet pipe (4) and the pumping station outlet pipe (5) are arranged in a triangular shape in the water diversion branch tunnel or the construction branch tunnel (2).

3. A long-distance water diversion tunnel relay pressurization structure and its operation method according to any one of claims 1 to 2, characterized in that: 3.

1. The water distribution pipe (3), the pumping station inlet pipe (4) and the pumping station outlet pipe (5) are arranged in a triangular shape in the water diversion branch tunnel or the construction branch tunnel (2); 3.

2. The water distribution pipe (3) and the pumping station inlet pipe (4) are arranged on the upstream side of the intersection where the long diversion tunnel (1) is connected to the water diversion branch tunnel or the construction branch tunnel (2), and concrete is backfilled and fixed between the pipe walls of the water distribution pipe (3) and the pumping station inlet pipe (4) and between the pipe walls and the inner wall of the long diversion tunnel (1); 3.

3. The pumping station outlet pipe (5) is arranged on the downstream side of the intersection where the long diversion tunnel (1) is connected to the water diversion branch tunnel or the construction branch tunnel (2), and concrete is backfilled and fixed between the pipe wall of the pumping station outlet pipe (5) and the inner wall of the long diversion tunnel (1); 3.

4. Concrete is backfilled between the pipe walls of the water distribution pipe (3), the pumping station inlet pipe (4) and the pumping station outlet pipe (5) and the inner wall of the water diversion branch tunnel or the construction branch tunnel (2); 3.

5. The pumping station inlet pipe (4) draws water from the long diversion tunnel (1) into the pumping station forebay, and after being pressurized by the ground pressure pumping station (6), it is sent back into the long diversion tunnel (1) through the pumping station outlet pipe (5) arranged in the water diversion branch tunnel or the construction branch tunnel (2) to continue water supply; 3.

6. The other end of the water distribution pipe (3) is connected to the water supply object after passing through a flow regulating valve (7).

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