Long-distance reverse slope drainage non-stop extension pipeline structure
By designing a long-distance reverse slope drainage and long-distance pipe structure, the coordinated operation of the drainage main pipe and branch pipe is solved, and the problem of unstoppable drainage in the prior art is not possible when increasing the length of the pipe, and efficient and continuous tunnel drainage is achieved.
Patent Information
- Application Number
- CN202411834921.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-03-21
AI Technical Summary
The prior art cannot achieve uninterrupted drainage when increasing the length of the pipeline, resulting in a decrease in drainage flow and cannot effectively solve the drainage problems of large sections, large-depth tunnels and sudden water inrush.
Through the coordinated operation of the drainage main pipe and the drainage branch pipe, a long-distance reverse slope drainage and unstoppable pipe structure is designed to ensure that the same drainage flow can be maintained without stopping when increasing the overall drainage pipe length.
Continuous and large flow drainage in the tunnel is achieved, avoiding the problem of reducing drainage flow in traditional devices when extending pipelines, and improving the efficiency of tunnel drainage and construction safety.
Smart Images
Figure CN119665047A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tunnel drainage, in particular to a long-distance reverse slope drainage non-stop extended pipeline structure. Background Art
[0002] As my country's infrastructure construction such as railways, highways, and water pipelines enters a period of rapid development, the number of railway tunnels, highway tunnels, and water tunnels under construction has increased rapidly, and the span and depth of tunnel excavation have continued to increase. During construction, water accumulation in tunnels seriously affects construction progress and safety, especially for large-section and deep tunnels, as well as sudden water inrush and short-term high-volume water inrush. Therefore, solving the drainage problem in tunnels is of vital importance in construction.
[0003] A survey of existing drainage devices in China found that the existing devices mainly increase the inner diameter of the pipe and optimize the head and flow of the water pump. The problem that the drainage operation cannot be carried out without stopping and the drainage flow rate will be reduced when the pipe length is increased has not been effectively solved. Therefore, there is an urgent need for a long-distance reverse slope drainage non-stop extension pipe structure in China.
[0004] Based on the above, the present invention proposes a long-distance reverse slope drainage non-stop extended pipeline structure. Summary of the invention
[0005] In view of the above-mentioned technical problems, the present invention overcomes the shortcomings of the prior art and provides a long-distance reverse slope drainage non-stop extended pipe structure. The drainage main pipe and the drainage branch pipe work together to achieve non-stop drainage in the tunnel. When the new pipe is installed to increase the overall drainage pipe length, the original drainage volume will not be reduced, and tunnel drainage operations can be carried out over long distances and with high efficiency.
[0006] The long-distance reverse slope drainage non-stop extension pipe structure in this scheme is applied to non-stop tunnel drainage operations, including a drainage pipe and a main gate valve. The drainage pipe has a drainage main pipe and an outlet end and an inlet end respectively located at the radial ends of the drainage main pipe, and the main gate valve is connected to the outlet end to control the opening or closing state of its water flow surface, wherein at least two drainage branch pipes are connected to the circumference of the drainage main pipe, and the total area of the water flow section of the drainage branch pipe is not less than the area of the water flow section of the drainage main pipe, to ensure that when a new pipeline is installed to increase the overall drainage pipe length, drainage is carried out non-stop at the same drainage flow rate, and each drainage branch pipe is installed with a branch gate valve to control the opening or closing state of its water flow surface.
[0007] Furthermore, one end of the branch gate valve away from the drainage branch pipe is connected to a drainage elbow, and the water outlet end of the drainage elbow is in the same direction as the water outlet end of the drainage main pipe.
[0008] Furthermore, there are four drainage branch pipes in total, two of which are connected to the top of the drainage main pipe, and the other two are connected to the right or left side of the drainage main pipe; or, the four drainage branch pipes are connected to the side wall of the drainage main pipe in a radial direction thereof; when the drainage branch pipes are respectively connected to the top and left / right side of the drainage main pipe, it can be avoided that one side of the drainage main pipe is subjected to force when water is discharged, and when the four drainage branch pipes are connected along the radial direction of the drainage main pipe, only the space on one side of the drainage main pipe is occupied, so that the working surface in the tunnel is maximized. Therefore, in some other schemes, the specific connection position of the drainage branch pipe is adjusted according to the actual situation in the tunnel.
[0009] Furthermore, the drainage main pipe and the drainage branch pipe are welded by double-sided submerged arc welding, the drainage main pipe and the main gate valve are riveted by hexagonal bolts, and a rubber water-stop gasket is provided between the drainage main pipe and the main gate valve for water-stop sealing; the double-sided submerged arc welding process, that is, the process of pre-welding first and then internal and external welding, can avoid quality defects such as misalignment, welding deviation and incomplete penetration at the welding point, can control the dimensional accuracy of the steel pipe after welding, and ensure the high quality of the weld. At the same time, submerged arc welding uses a large welding current, concentrated heat, and high thermal efficiency. Compared with traditional welding methods, it can effectively reduce the cost of welding.
[0010] Furthermore, the main drainage pipe and / or the branch drainage pipe include a spiral steel pipe.
[0011] Furthermore, the spiral steel pipe includes one or more of Q235 steel, Q345 steel and manganese steel.
[0012] Furthermore, the main gate valve and / or branch gate valve are made of cast iron or alloy steel, with a pressure resistance of not less than 1.0 MPa. They are made of different materials so that the drainage pipe can adapt to different tunnel drainage environments.
[0013] Furthermore, the wall thickness of the drainage main pipe is greater than that of the drainage branch pipe, and the wall thicknesses of the drainage branch pipe and the drainage elbow pipe are equal. The drainage main pipe and the drainage branch pipe use different wall thicknesses, which can effectively reduce the use of steel and reduce the cost of producing and transporting drainage pipes.
[0014] Furthermore, the drainage main pipe and the main gate valve are connected via a flange.
[0015] Furthermore, the drainage branch pipe and the branch gate valve, as well as the branch gate valve and the drainage elbow are connected via flanges.
[0016] The beneficial effects of the present invention are: (1) The long-distance reverse slope drainage non-stop extension pipe structure of the present invention is applied to non-stop tunnel drainage operations. During tunnel drainage, the drainage main pipe and the drainage branch pipe work together to ensure the continuity and large flow of tunnel drainage. Compared with traditional drainage devices, the drainage device can achieve non-stop drainage and drainage with the same flow rate, that is, in the process of extending the drainage pipe, there is no need to stop the drainage construction work, and the drainage flow rate will not be reduced; (2) In the present invention, the drain pipe and the flange are connected by double-sided submerged arc welding, and the flanges and the flanges and the gate valve are riveted by hexagonal bolts. The connection is tight and reliable and not easy to fall off. The installation process is simple and the disassembly is strong; (3) The pipeline structure design adopted by the present invention has reasonable force, is safe and stable, and has simple installation steps during on-site construction. It is suitable for various types of tunnel drainage environments, can significantly improve the drainage capacity in the tunnel, ensure the stable progress of subsequent construction processes, and improve construction efficiency and work quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG1 is a schematic diagram of a long-distance reverse slope drainage non-stop pipe structure according to an embodiment of the present invention; FIG2 is a front view of drain pipe No. Ⅰ in an embodiment of the present invention; FIG3 is a top view of drain pipe No. 1 in an embodiment of the present invention; FIG4 is a left side view of drain pipe No. 1 in an embodiment of the present invention; FIG5 is a left side view of drain pipe No. II in an embodiment of the present invention; FIG6 is a front view of drain pipe No. II in an embodiment of the present invention; FIG7 is a top view of drain pipe No. II in an embodiment of the present invention; FIG8 is a front view of a drainage branch pipe according to an embodiment of the present invention; FIG9 is a top view of a drainage branch pipe according to an embodiment of the present invention; FIG10 is a left view of a drainage branch pipe according to an embodiment of the present invention; FIG11 is a top view of a drainage elbow according to an embodiment of the present invention; FIG12 is a front view of a drainage elbow according to an embodiment of the present invention; FIG13 is a left side view of the drainage elbow according to an embodiment of the present invention; FIG14 is a left view of the main gate valve in an embodiment of the present invention; FIG15 is a front view of the main gate valve in an embodiment of the present invention; FIG16 is a top view of the main gate valve in an embodiment of the present invention; FIG17 is a diagram of a hexagonal bolt according to an embodiment of the present invention; In the figure: 1. Drain main pipe; 2. Drain main pipe welding flange; 3. Hexagonal bolt hole of drain main pipe; 4. Drain branch pipe; 5. Drain branch pipe welding flange; 6. Drain branch pipe bolt hole; 7. Gate valve pipe wall; 8. Gate valve flange; 9. Gate valve hexagonal bolt hole; 10. Main gate valve; 11. Hexagonal bolt; 12. Gate valve handwheel; 13. Drain elbow; 14. Drain elbow flange; 15. Hexagonal bolt hole of drain elbow. DETAILED DESCRIPTION
[0018] The long-distance reverse slope drainage non-stop extended pipe structure of the present invention is further described below in conjunction with the accompanying drawings to enable those skilled in the art to better understand the technical solution of the present invention. This embodiment is implemented based on the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.
[0019] Embodiment 1: The present invention proposes a long-distance reverse slope drainage non-stop long pipe structure, which is applied to tunnel drainage non-stop operation. The long-distance reverse slope drainage non-stop long pipe structure is as follows: Figure 1 The drainage device composed of drainage main pipe 1, drainage branch pipe 4, flange and gate valve, namely drainage pipe No. Ⅰ, improves the drainage capacity in the tunnel, ensures the stable progress of subsequent construction procedures, and improves construction efficiency and work quality.
[0020] like Figure 1-4 and Figure 8-17 As shown, the long-distance reverse slope drainage non-stop extended pipeline structure specifically includes a drainage main pipe 1, a drainage branch pipe 4, a drainage elbow 13, and various flanges and gate valves. The ends of the drainage main pipe 1 are connected to the drainage main pipe welding flange 2, and the drainage main pipe welding flange 2 is provided with a drainage main pipe hexagonal bolt hole 3. The drainage main pipe welding flange 2 at one end of the drainage main pipe 1 is connected to the main gate valve 10, and the main gate valve 10 is installed on the gate valve pipe wall 7. Gate valve flanges 8 and gate valve hexagonal bolt holes 9 are provided at both ends of the gate valve pipe wall 7. A gate valve handwheel 12 is installed on the main gate valve 10. The side of the drainage main pipe 1 is connected to four drainage branch pipes 4, and the ends of the drainage branch pipes 4 are connected to the drainage branch pipe welding flange 5, and then connected to the branch gate valve through the drainage branch pipe bolt hole 6 flange. The branch gate valve is externally connected to the drainage elbow 13. It can be understood that the branch gate valve in this application has the same structure and function as the main gate valve 10.
[0021] like Figure 1 , 4 As shown in FIG. 10 , the water-passing section (drainage pipe cross-sectional area) of the drainage main pipe 1 is smaller than the sum of the water-passing sections (drainage pipe cross-sectional areas) of the four drainage branch pipes 4, ensuring that when a new pipe is installed to increase the overall drainage pipe length, drainage can be carried out without interruption at the same drainage flow rate.
[0022] like Figure 1As shown, the side wall of the main drainage pipe 1 is connected to four branch drainage pipes 4 , two of which are connected to the top of the main drainage pipe 1 , and the other two are connected to the right side of the main drainage pipe 1 .
[0023] like Figure 1 , 2 As shown in , 3, the connection method between the pipe wall of the drainage main pipe 1 and the pipe wall of the drainage branch pipe 4 is double-sided submerged arc welding, and the connection method between the pipe wall of the drainage main pipe 1, the pipe wall of the drainage branch pipe 4 and the flange is double-sided submerged arc welding. The drainage main pipe 1, the drainage branch pipe 4, the drainage elbow 13 and the gate valve are riveted with hexagonal bolts 11 respectively, and a rubber water-stop gasket is provided between the two for water-stop sealing. Drainage elbow flanges 14 are provided at both ends of the drainage elbow 13, and the drainage elbow flange is provided with a drainage elbow hexagonal bolt hole 15. The water outlet direction of the drainage elbow 13 is the same as the water outlet direction of the drainage main pipe 1.
[0024] The drainage main pipe 1, drainage branch pipe 4 and drainage elbow 13 in this embodiment are all made of Q235 spiral steel pipe, and the main gate valve 10 and branch gate valve are made of cast iron material with a pressure resistance of not less than 1.0 MPa.
[0025] like Figure 4 , 10 As shown in FIG. 12 , the wall thickness of the main drainage pipe 1 is greater than the wall thickness of the branch drainage pipe 4 and the drain elbow 13 , and the wall thickness of the branch drainage pipe 4 is the same as the wall thickness of the drain elbow 13 .
[0026] like Figure 2-4 , Figure 8-13 As shown, the drainage main pipe 1, drainage branch pipe 4 and drainage elbow 13 are all of modular design, that is, the pipe diameter, pipe length and flange of the two connected drainage main pipes 1 are of the same size, and the pipe diameter, pipe length and flange of the drainage branch pipe 4 and drainage elbow 13 connected to each other in the pipeline structure are of the same size.
[0027] When using the long-distance reverse slope drainage non-stop extension pipe structure of the present invention, that is, when the drainage operation in the tunnel needs to install a new pipe to extend the overall length of the drainage pipe, first close the branch gate valve connected to the four drainage branch pipes 1, then connect the drainage branch pipe 4, the branch gate valve connected to the drainage branch pipe 4, the drainage elbow 13 and the drainage branch pipe 4 where the new pipe needs to be installed, open the branch gate valve connected to the drainage branch pipe 4 again, and finally close the main gate valve 10 connected to the drainage main pipe 1. Through the coordinated operation of the drainage main pipe 1 and the drainage branch pipe 4, the total cross-sectional area of the four drainage branch pipes 4 is larger than the cross-sectional area of the drainage main pipe 1, which can realize the non-stop operation of drainage in the tunnel without reducing its drainage flow.
[0028] Embodiment 2: The present invention proposes a long-distance reverse slope drainage non-stop pipe extension structure, whose structure and use process are basically the same as those of embodiment 1, that is, No. II drainage pipe, which is different from No. I drainage pipe in embodiment 1, and the materials of the drainage main pipe 1, drainage branch pipe 4 and drainage elbow 13 are replaced with Q345 spiral steel pipes, such as Figure 5 , 6 7. The side wall of the drainage main pipe 1 is connected to four drainage branch pipes 4, and the four are connected to the top of the drainage main pipe 1 in turn, which can reduce the lateral working space of the tunnel and is suitable for the drainage environment of a small-section tunnel.
[0029] like Figure 1-10 As shown, the diameter of the No. Ⅰ drainage pipe is the same as the diameter of the No. Ⅱ drainage pipe, which is recorded as D1, and the diameter of the drainage branch pipe 4 is the same as the diameter of the drainage elbow 13, which is recorded as D2, and the diameter D1 of the No. Ⅰ (No. Ⅱ) drainage pipe is larger than the diameter D2 of the drainage branch pipe 4 and the drainage elbow 13. The design that the diameter D1 of the drainage main pipe 1 is larger than the diameter D2 of the drainage branch pipe 4 facilitates the connection between the main pipe and the branch pipe, and ensures firmness and reliability during welding.
[0030] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.
Claims
1. A long-distance reverse slope drainage non-stop pipe connection structure, characterized in that: The invention is applied to non-stop drainage operation in a tunnel, and comprises a drainage pipe and a main gate valve. The drainage pipe comprises a drainage main pipe and a water outlet and a water inlet respectively located at two radial ends of the drainage main pipe, and the main gate valve is connected to the water outlet to control the opening or closing state of its water flow surface. At least two drainage branch pipes are connected to the circumference of the drainage main pipe, and the total area of the water flow section of the drainage branch pipes is not less than the area of the water flow section of the drainage main pipe, and each drainage branch pipe is installed with a branch gate valve to control the opening or closing state of its water flow surface.
2. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 1 is characterized in that: The ends of the branch gate valves away from the drainage branch pipe are connected to a drainage elbow, and the water outlet end of the drainage elbow is in the same direction as the water outlet end of the drainage main pipe.
3. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 1 is characterized in that: There are four drainage branch pipes in total, two of which are connected to the top of the drainage main pipe, and the other two are connected to the right or left side of the drainage main pipe; or, the four drainage branch pipes are connected to the side wall of the drainage main pipe in a radial direction.
4. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 1 is characterized in that: The drainage main pipe and the drainage branch pipe are welded by double-sided submerged arc welding, the drainage main pipe and the main gate valve are riveted by hexagonal bolts, and a rubber water-stop gasket is provided between the drainage main pipe and the main gate valve for water-stop sealing.
5. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 1 is characterized in that: The main drainage pipe and / or the branch drainage pipe include a spiral steel pipe.
6. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 5 is characterized in that: The spiral steel pipe includes one or more of Q235 steel, Q345 steel and manganese steel.
7. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 5 is characterized in that: The main gate valve and / or branch gate valve are made of cast iron or alloy steel.
8. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 2 is characterized in that: The pipe wall thickness of the main drainage pipe is greater than the pipe wall thickness of the branch drainage pipe, and the pipe wall thicknesses of the branch drainage pipe and the drain elbow pipe are equal.
9. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 2 is characterized in that: The drainage main pipe and the main gate valve are connected via a flange.
10. The long-distance reverse slope drainage non-stop pipe extension structure according to claim 2 is characterized in that: The drainage branch pipe and the branch gate valve, as well as the branch gate valve and the drainage elbow are all connected through flanges.