Recrystallization area highway tunnel drainage system convenient to clean and maintain
By designing a drainage system including annular drainage pipe, longitudinal drainage pipe, transverse drainage pipe and central drainage ditches, and setting guide ropes in the corner inspection well to connect high-pressure cleaning equipment, the problem of easy blockage and difficulty in maintenance of the horizontal drainage pipes in the highway tunnel drainage system in the recrystallized area is solved, and simpler cleaning and maintenance and higher reliability are achieved.
Patent Information
- Application Number
- CN202421512620.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The longitudinal slope of the horizontal drainage pipe of the highway tunnel drainage system in the recrystallization area is small, easy to be blocked, and it is extremely difficult to clean and maintain daily.
A drainage system including annular drainage pipe, longitudinal drainage pipe, transverse drainage pipe and central drainage ditches is designed. The pipe is connected through unequal diameter tee joints and equal diameter quad joints, and a guide rope is installed in the corner inspection well. The guide rope can be connected to the high-pressure cleaning nozzle and the hoist to realize high-pressure cleaning and maintenance.
This system makes daily cleaning and maintenance of transverse drain pipes easier, improves the maintenance and reliability of transverse drain pipes in the recrystallized area tunnel, and extends the normal service life of the drainage system.
Smart Images
Figure CN222615393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tunnel drainage system, in particular to a recrystallization zone highway tunnel drainage system which is convenient for cleaning and maintenance. Background Art
[0002] Tunnel engineering occupies an important position in modern transportation infrastructure. With the increase in the scale of tunnel construction and the increasing complexity of construction conditions, the design and management of drainage systems have become particularly critical. The reliability of the drainage system directly determines the operational safety of tunnel engineering. Generally speaking, the tunnel drainage system is mainly composed of annular drainage pipes, longitudinal drainage pipes, transverse drainage pipes, roadside drainage culverts, and central drainage ditch behind the secondary lining. The accumulated water behind the secondary lining is drained to the central drainage ditch through the annular drainage pipes, longitudinal drainage pipes, and transverse drainage pipes to reduce the water pressure behind the secondary lining and improve the durability of the lining structure. There are two main types of blockage in tunnel drainage systems: one is caused by sediment; the other is caused by chemical crystal blockage. The crystallization problem in the tunnel drainage system mainly comes from the fact that the minerals dissolved in the water reach a supersaturated state under specific conditions, and then precipitate to form crystals. These conditions include changes in environmental factors such as water temperature, flow rate, pressure, pH value, and concentration. At present, researchers generally believe that the formation of crystals in tunnel drainage systems is a complex physical and chemical process involving the interaction of multiple factors. For tunnels located in karst areas, crystallization blockage of the drainage system is one of the most common diseases. Crystallization blockage in tunnel drainage systems often causes cracking of tunnel lining structures, water leakage, bulging of pavement structures, cracking and flooding, and other problems, seriously affecting tunnel driving safety. In addition, since tunnel drainage systems are all buried, especially the transverse drainage pipes behind the secondary lining, the transverse drainage pipes have a small longitudinal slope and are the hardest hit areas for blockage, and daily cleaning and maintenance are extremely difficult. If no corresponding measures are taken to clean the tunnel drainage pipes in the recrystallization area, their normal service life is extremely short. The tunnel is usually in operation for 3-5 years, and the drainage system behind the secondary lining is basically ineffective. Therefore, in view of the crystallization blockage problem of tunnel drainage systems in karst areas, combined with literature research and actual on-site engineering conditions, it is of great significance to design a design scheme for the drainage system of highway tunnels in recrystallization areas that is easy to clean and maintain. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide a recrystallization zone highway tunnel drainage system that is easy to clean and maintain, so as to solve the technical problems that the lateral drainage pipes of the recrystallization zone highway tunnel drainage system have a small longitudinal slope, are easy to clog and are extremely difficult to clean and maintain on a daily basis.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A recrystallization zone highway tunnel drainage system which is easy to clean and maintain, comprising an annular drainage pipe, a longitudinal drainage pipe, a transverse drainage pipe and a central drainage ditch, wherein the annular drainage pipe is composed of an upper small-diameter annular pipe and a lower two-diameter straight pipe, wherein the upper ends of the two-diameter straight pipes are connected to the two ends of the small-diameter annular pipe at the arch waist positions on both sides of the tunnel through unequal-diameter three-way joints, and the lower ends of the two-diameter straight pipes are connected to the longitudinal drainage pipe and the transverse drainage pipe at both sides of the tunnel through equal-diameter four-way joints, and corner inspection wells are respectively arranged on both sides of the tunnel. Each unequal diameter tee joint is located in a corner inspection well, the wellhead of the corner inspection well is located on the side wall at the arch waist position of the tunnel and is opened and closed by a cover plate. A guide rope is provided in the two unequal diameter tee joints, two large diameter straight pipes, two equal diameter four-way joints, two horizontal drainage pipes and the central drainage ditch on the same tunnel section. The two ends of the guide rope are respectively extended from the openings of the two unequal diameter tee joints. One end of the guide rope can be connected to a high-pressure cleaning nozzle, and the high-pressure cleaning nozzle is connected to a high-pressure cleaning machine through a hose. The other end of the guide rope can be connected to a winch.
[0006] Furthermore, the opening of the unequal diameter tee joint faces the wellhead of the corner inspection well.
[0007] Furthermore, the two ends of the guide rope are respectively connected to the connecting rings at the two ends of the guide rope through 8-shaped aluminum sleeve lock buckles, and the high-pressure cleaning nozzle and the winch are respectively connected to the connecting rings at the two ends of the guide rope.
[0008] Furthermore, the large-diameter straight pipe and the equal-diameter four-way joint are located in the corner inspection well.
[0009] The beneficial effects of the utility model are:
[0010] The utility model discloses a recrystallization zone highway tunnel drainage system which is convenient for cleaning and maintenance. During daily cleaning and maintenance, one end of a guide rope is connected to a high-pressure cleaning nozzle, which is connected to a high-pressure cleaning machine through a hose, and the other end of the guide rope is connected to a winch. The high-pressure cleaning machine and the winch are started, and the winch pulls one end of the guide rope. The guide rope pulls the high-pressure cleaning nozzle into a large-diameter straight pipe and a transverse drainage pipe and performs high-pressure flushing on the large-diameter straight pipe and the transverse drainage pipe. After the cleaning is completed, the guide rope is restored to its original position by pulling the hose of the high-pressure cleaning machine so as to facilitate the next cleaning. The drainage system makes daily cleaning and maintenance of the transverse drainage pipe easier.
[0011] The annular drainage pipe is connected by a small-diameter arc pipe and two large-diameter straight pipes. This structure makes the pulling of the guide rope smoother, and an inspection well is set up to store the guide rope.
[0012] The opening of the unequal diameter tee joint faces the wellhead of the corner inspection well, making it easier to pull the guide rope.
[0013] Inspection wells are provided to allow inspection of the position of unequal diameter tees and equal diameter crosses.
[0014] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:
[0016] Figure 1 It is a schematic elevation view of the utility model.
[0017] Figure 2 It is a plan view of the utility model.
[0018] Figure 3 It is a side schematic diagram of the connection of the annular drain pipe, the longitudinal drain pipe and the transverse drain pipe in the utility model.
[0019] Figure 4 for Figure 1 Schematic diagram of the medium diameter cross joint in elevation.
[0020] Figure 5 for Figure 1 Side view of a medium diameter cross.
[0021] Figure 6 for Figure 1 Schematic diagram of the elevation of the unequal diameter tee joint.
[0022] Figure 7 It is a partially enlarged schematic diagram of the utility model in use.
[0023] In the figure: high-pressure cleaning machine 1, high-pressure cleaning nozzle 2, guide rope 3, unequal diameter tee joint 4, large diameter straight pipe 5, equal diameter four-way joint 6, longitudinal drain pipe 7, transverse drain pipe 8, annular drain pipe 10, central drain ditch 11, winch 12, corner inspection well 13, cover plate 14. DETAILED DESCRIPTION
[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.
[0025] like Figure 1As shown, a recrystallization zone highway tunnel drainage system that is easy to clean and maintain includes the existing circumferential drainage pipe 10, longitudinal drainage pipe 7, transverse drainage pipe 8 and central drainage ditch 11 of the highway tunnel. The improvement is that the circumferential drainage pipe 10 is composed of an upper φ50mm small-diameter circumferential pipe and a lower φ100mm large-diameter straight pipe 5. The upper ends of the large-diameter straight pipes 5 are connected to the two ends of the small-diameter circumferential pipe at the arch waist position on both sides of the tunnel through unequal-diameter tee joints 4. The upper end of the unequal-diameter tee joint 4 has a diameter of φ50mm, and the lower end and the open end have a diameter of φ100mm. The lower ends of the large-diameter straight pipes 5 are connected to the longitudinal drainage pipe 10 and the central drainage ditch 11 on both sides of the tunnel through equal-diameter four-way joints 6. The angle between the large diameter straight pipe 5 and the horizontal drainage pipe 8 is 120°, which will cause the unequal diameter tee joint 4 to tilt, and the open end of the unequal diameter tee joint 4 is located on the upper surface, which can prevent water from flowing out of the open end of the unequal diameter tee joint 4. Of course, an extension pipe can be connected to the open end of the aforementioned unequal diameter tee joint 4 to prevent water from flowing out. The diameters of the four ends of the equal diameter four-way joint 6 are all φ100mm, and the diameters of the horizontal drainage pipe 8 and the longitudinal drainage pipe 7 are also φ100mm. Corner inspection wells 13 are set on both sides of the tunnel, and each unequal diameter tee joint 4 is located in a corner inspection well 13. The opening of the unequal diameter tee joint 4 is directly opposite to the wellhead of the corner inspection well 13. The wellhead of the corner inspection well 13 is located on the side wall of the arch waist position of the tunnel and is opened and closed by the A3 steel cover plate 14. The large diameter straight pipe 5 and the equal diameter four-way joint 6 are also located in the corner inspection well 13. A guide rope 3 is provided in two unequal diameter tee joints 4, two large diameter straight pipes 5, two equal diameter four-way joints 6, two transverse drainage pipes 8 and a central drainage ditch 11 on the same tunnel section. The guide rope 3 is a thin steel wire. Both ends of the guide rope 3 extend from the openings of the two unequal diameter tee joints 4 and are sufficiently long. Both ends of the guide rope 3 form connecting rings through 8-shaped aluminum sleeve lock buckles. The connecting ring at one end of the guide rope 3 can be connected to a high-pressure cleaning nozzle 2, and the high-pressure cleaning nozzle 2 is connected to a high-pressure cleaning machine 1 through a hose. The connecting ring at the other end of the guide rope 3 can be connected to a winch 12.
[0026] During the tunnel construction period, the guide rope 3 is placed in two unequal diameter tees 4, two large diameter straight pipes 5, two equal diameter four-way joints 6, two transverse drainage pipes 8 and a central drainage ditch 11.
[0027] During maintenance, without interrupting traffic, high-pressure cleaners 1 and winches 12 are placed on the maintenance roads on both sides of the tunnel, so that the connecting ring at one end of the guide rope 3 is connected to the high-pressure cleaning nozzle 2 on the hose of the high-pressure cleaner 1, and the connecting ring at the other end is connected to the winch 12. The guide rope 3 is pulled by the winch 12 to pull the high-pressure cleaning nozzle 2 to clean the transverse drainage pipe 8 and the large-diameter straight pipe 5 at a uniform speed. For areas with severe crystallization, first connect the winch 12 to both ends of the guide rope 3, and pull the guide rope 3 back and forth to break the crystals for high-pressure cleaning. After cleaning, the guide rope 3 is restored to its original position by pulling the hose of the high-pressure cleaner 1 for the next cleaning. At the same time, the high-pressure cleaning liquid can also be added with solutions such as descaling agents to improve the construction effect of high-pressure flushing water.
[0028] Placing the guide rope 3 can facilitate high-pressure cleaning of the horizontal drainage pipe 8, the large-diameter straight pipe 5, the unequal-diameter tee joint 4 and the equal-diameter cross joint 4 during the operation stage, and can also inspect the construction quality of the horizontal drainage pipe 8, the large-diameter straight pipe 5, the unequal-diameter tee joint 4 and the equal-diameter cross joint 6 during the construction period, solving the difficult problem of quality management of the construction of the buried drainage pipe during the construction period. Setting the corner inspection well 13 can conveniently check the position of the unequal-diameter tee joint 4 and the equal-diameter cross joint 6, and is also used to store the guide rope 3.
[0029] A guide rope 3 is set in the transverse drainage pipe 8. After the tunnel has been in operation for a period of time, the guide rope 3 is used as a guide to connect the cleaning nozzle 2 on the hose of the high-pressure cleaning machine 1, and high-pressure water is used to clean the crystallized sediments in the tunnel transverse drainage pipe 8. The operation is simple and fast, does not affect the normal traffic of the tunnel, reduces the probability of blockage of the transverse drainage pipe, and improves the maintainability and reliability of the transverse drainage pipe of the tunnel in the recrystallization zone.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.
Claims
1. A recrystallization zone highway tunnel drainage system that is easy to clean and maintain, comprising an annular drainage pipe (10), a longitudinal drainage pipe (7), a transverse drainage pipe (8) and a central drainage ditch (11), characterized in that: The annular drainage pipe (10) is composed of an upper small-diameter annular pipe and a lower large-diameter straight pipe (5). The upper ends of the large-diameter straight pipes (5) are connected to the two ends of the small-diameter annular pipe at the arch waist positions on both sides of the tunnel through unequal-diameter three-way joints (4). The lower ends of the large-diameter straight pipes (5) are connected to the longitudinal drainage pipe (7) and the transverse drainage pipe (8) at both sides of the tunnel through equal-diameter four-way joints (6). Corner inspection wells (13) are respectively arranged on both sides of the tunnel. Each unequal-diameter three-way joint (4) is located in a corner inspection well (13). The corner inspection well (13) The wellhead is located on the side wall at the arch waist position of the tunnel and is opened and closed by a cover plate (14). A guide rope (3) is provided in two unequal diameter three-way joints (4), two large diameter straight pipes (5), two equal diameter four-way joints (6), two transverse drainage pipes (8) and a central drainage ditch (11) on the same tunnel section. The two ends of the guide rope (3) extend from the openings of the two unequal diameter three-way joints (4) respectively. One end of the guide rope (3) can be connected to a high-pressure cleaning nozzle (2). The high-pressure cleaning nozzle (2) is connected to a high-pressure cleaning machine (1) through a hose. The other end of the guide rope (3) can be connected to a winch (12).
2. The recrystallization zone highway tunnel drainage system that is easy to clean and maintain according to claim 1 is characterized by: The opening of the unequal diameter three-way joint (4) faces the wellhead of the corner inspection well (13).
3. The recrystallization zone highway tunnel drainage system that is easy to clean and maintain according to claim 1 is characterized by: The two ends of the guide rope (3) are respectively connected to the connecting rings at the two ends of the guide rope (3) through 8-shaped aluminum sleeve lock buckles, and the high-pressure cleaning nozzle (2) and the winch (12) are respectively connected to the connecting rings at the two ends of the guide rope (3).
4. The recrystallization zone highway tunnel drainage system that is easy to clean and maintain according to any one of claims 1 to 3, characterized in that: The large-diameter straight pipe (5) and the equal-diameter four-way joint (6) are located in the wall corner inspection well (13).