Drainage device and drainage method for tunnel

Abstract

The invention relates to the technical field of tunnel drainage, and specifically discloses a device and a drainage method for tunnel drainage, comprising a supporting layer, a water collecting concealed pipe and a plurality of seepage pipes, wherein a sponge cylinder is installed in the seepage pipe, one end of a water storage cylinder is arranged in the water collecting concealed pipe, a drainage cavity connecting the water storage cylinder and the sponge cylinder is provided, a drainage channel connected to the outside is provided on the drainage cavity, a valve assembly for controlling the opening and closing of the drainage channel is provided in the drainage channel, an overflow hole connected to the water collecting concealed pipe is provided on the water storage cylinder, a cleaning mechanism comprises a pull rod arranged on the sponge cylinder and passing through the water storage cylinder and a flushing assembly arranged on the pull rod, a sealing plate is located at the top end of the sponge cylinder, and when the sealing plate enters the drainage cavity, the flushing assembly passes the clean water in the water storage cylinder into the drainage cavity; the invention can improve the cleaning efficiency of impurities in the drainage device.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel drainage, and in particular to a device and a method for tunnel drainage. Background Art

[0002] During the construction and operation of a tunnel, groundwater or rainwater penetrates into the space above the tunnel through cracks or voids in the rock and soil, forming accumulated water. This accumulated water needs to be effectively discharged through a specific drainage system to ensure the safety and normal use of the tunnel. The design principles of the drainage system usually include consideration of geological characteristics, tunnel structure, application of precipitation technology, curtain grouting for anti-seepage, drainage system construction, and monitoring system construction. Common drainage technologies in drainage system construction include intercepting ditches, drainage pipes, drainage pumping stations, drainage wells, etc.

[0003] A Chinese patent document with announcement number CN114278377B discloses an active drainage structure for an underground tunnel, including a supporting layer, a seepage pipe and a water collecting pipe. A cavity groove is opened on the supporting layer, one end of the seepage pipe is embedded in the cavity groove, and the other end of the seepage pipe is located on the outside of the supporting layer. The cavity groove is also equipped with an arc-shaped water collecting pipe. One end of the seepage pipe embedded in the cavity groove is connected to the water collecting pipe. During drainage, water on the outside of the supporting layer flows into the water collecting pipe through the seepage pipe, and then is discharged through both ends of the water collecting pipe. When blockage occurs after a period of use, the staff can directly dismantle the entire water collecting pipe for dredging.

[0004] In the above technology, when unclogging the water collecting pipe, the entire water collecting pipe needs to be dismantled. Since the overall length of the water collecting pipe is relatively long, it occupies more space in the tunnel when it is dismantled, and there are multiple seepage pipes connected to the water collecting pipe, so it is more troublesome to unblock the water collecting pipe. Summary of the invention

[0005] The present invention provides a device for tunnel drainage, aiming to solve the technical problem in the related art that it is troublesome to clear and clean the water collecting concealed pipe due to the long overall length of the water collecting concealed pipe and the multiple seepage pipes connected to the water collecting concealed pipe.

[0006] A device for tunnel drainage, comprising a supporting layer, a water collecting concealed pipe and a plurality of seepage pipes, and also comprising:

[0007] A water inlet filter hole is provided on the top of the side of the seepage pipe, and a sponge tube is installed in the seepage pipe;

[0008] A water storage cylinder, the diameter of which is smaller than that of the sponge cylinder, one end of which is arranged in a water collecting dark pipe, and the other end of which extends out of the inner side of the water collecting dark pipe, a drainage cavity connecting the water storage cylinder and the sponge cylinder, a drainage channel connecting to the outside world is provided on the drainage cavity, a valve assembly for controlling the opening and closing of the drainage channel is provided in the drainage channel, and an overflow hole connecting to the water collecting dark pipe is provided on the water storage cylinder;

[0009] The cleaning mechanism includes a pull rod arranged on the sponge cylinder and passing through the water storage cylinder and a flushing assembly arranged on the pull rod. A sealing plate adapted to the seepage pipe is installed on the top of the pull rod. The sealing plate is located at the top of the sponge cylinder. When the pull rod slides toward the inner side of the supporting layer, it drives the sponge cylinder into the water storage cylinder. When the sealing plate enters the drainage cavity, the flushing assembly passes the clean water in the water storage cylinder into the drainage cavity.

[0010] The effect is as follows: by arranging a water storage cylinder under the seepage pipe, a certain amount of clean water can be retained in the water storage cylinder, and by arranging a drainage chamber, when the sponge cylinder enters the water storage cylinder, the water in the sponge cylinder can be used to reversely flush away the impurities on the surface of the sponge cylinder. At the same time, the flushing component can discharge the clean water in the water storage cylinder into the drainage chamber to flush the residual impurities in the drainage chamber, thereby preventing the drainage chamber and the drainage channel from being blocked.

[0011] Preferably, the valve assembly includes a pressure ring that is slidably sealed and installed in the gap between the water storage cylinder and the pull rod. A through hole connecting the drainage chamber and the water storage cylinder is opened on the pressure ring. A spring push plate 1 is slidably installed on the pressure ring for opening and closing the through hole. When the pressure ring is located at the top of the water storage cylinder, the spring push plate 1 opens the through hole. When the pressure ring moves away from the drainage chamber, the spring push plate 1 abuts against the water storage cylinder to close the through hole.

[0012] The effect is that the pressure ring arranged in the gap between the water storage cylinder and the pull rod can press the clean water in the water storage cylinder into the flushing assembly when the sponge cylinder enters the water storage cylinder.

[0013] Preferably, the valve assembly also includes a spring push plate 2 slidably mounted on the water storage cylinder for closing the drainage channel. When the pressure ring is located at the upper end of the water storage cylinder, the spring push plate 1 pops out to push the spring push plate 2 to close the drainage channel.

[0014] The effect is that the arrangement of the spring push plate 1 and the spring push plate 2 can realize the switching of the connection state between the drainage cavity and the outside and the water storage cylinder respectively.

[0015] Preferably, the flushing assembly includes a water spray chamber arranged in the pull rod and an energy storage plate slidably installed in the water spray chamber, an elastic member is arranged between the energy storage plate and the bottom end of the water spray chamber, a water outlet channel is arranged at the top end of the water spray chamber, and the other end of the water outlet channel is located at the edge of the sealing plate. When the pull rod moves toward the inside of the tunnel, the water outlet channel is connected with the drainage chamber, and a water inlet hole connected with the water storage cylinder is opened on the side wall of the water spray chamber, and the water inlet hole is located between the energy storage plate and the pressure ring.

[0016] The effect is that after the sponge tube completely enters the water storage tube, the clean water in the water storage tube can be used to flush the drainage cavity.

[0017] Preferably, a second elastic member is provided between the pressure ring and the water storage cylinder.

[0018] The effect is that when the sponge tube is withdrawn from the water storage tube, the pressure ring can be automatically reset.

[0019] Preferably, a sealing sleeve is rotatably installed in the seepage pipe, a sealing filter hole opposite to the water inlet filter hole is opened on the side of the sealing sleeve, a spiral groove is arranged between the sealing sleeve and the sealing plate, and when the sealing plate slides toward the drainage chamber, the sealing sleeve is driven to rotate so that the sealing filter hole and the water inlet filter hole are staggered, thereby sealing the seepage pipe.

[0020] The effect is that when the sponge tube enters the water storage tube, the clean water in the sponge tube is prevented from being squeezed out from the water seepage pipe.

[0021] Preferably, the water storage cylinder is detachably mounted on the water collecting concealed pipe.

[0022] The effect is that the sponge tube can be easily replaced.

[0023] On the other hand, the present invention further provides a drainage method for a device for tunnel drainage, wherein the drainage method for a device for tunnel drainage uses a device for tunnel drainage described in any one of the above preferred technical solutions, and the drainage method for a device for tunnel drainage comprises the following steps:

[0024] S1. Tunnel seepage water first enters the sponge cylinder through the seepage pipe, then enters the water storage cylinder after passing through the sponge cylinder. When the water in the water storage cylinder overflows the overflow hole, it enters the water collection hidden pipe;

[0025] S2. After the sponge tube has been used for a period of time, the pull rod is pulled to make the sponge tube enter the water storage tube to clean the sponge tube. After the sealing plate enters the drainage cavity, the water spray assembly flushes the drainage cavity;

[0026] S3. After the sponge tube has been used for a long time, the water storage tube should be removed from the water collecting concealed pipe and the sponge tube should be replaced.

[0027] The effect is that the above drainage method does not require an additional water source to clean the drainage device, and the operation process is simple and quick.

[0028] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0029] 1. By installing a sponge cylinder in the seepage pipe, impurities in the rock seepage water are blocked on the outer surface of the sponge cylinder. At the same time, a water storage cylinder with a diameter smaller than the diameter of the sponge cylinder is set under the seepage pipe. By pulling the pull rod on the sponge cylinder, the sponge cylinder enters the water storage cylinder, and then the sponge cylinder is squeezed, so that the water in the sponge cylinder reversely washes away the impurities on the surface of the sponge cylinder. When cleaning the sponge cylinder, you only need to pull the pull rod to complete the cleaning of the sponge cylinder. The operation is simple and the cleaning efficiency is high.

[0030] 2. The water storage cylinder is connected to the water collecting concealed pipe, which makes it more convenient and quick to replace the sponge cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the water seepage pipe of the present invention.

[0033] Figure 3 It is a cross-sectional view of the flushing assembly of the present invention.

[0034] Figure 4 It is a cross-sectional view of the drainage channel of the present invention.

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the pull rod of the present invention.

[0036] Figure 6 It is a schematic diagram of the three-dimensional structure of the pressure ring of the present invention.

[0037] Figure 7 It is a schematic diagram of the three-dimensional structure of the water storage cylinder of the present invention.

[0038] Reference numerals:

[0039] 1. Support layer; 2. Seepage pipe; 21. Water inlet filter hole; 3. Water collecting concealed pipe; 4. Sponge tube; 5. Water storage tube; 6. Drainage cavity; 7. Drainage channel; 8. Cleaning mechanism; 81. Pull rod; 82. Sealing plate; 83. Elastic part three; 84. Flushing assembly; 841. Water spray cavity; 842. Energy storage plate; 843. Elastic part one; 844. Water outlet channel; 845. Water inlet hole; 10. Overflow hole; 11. Pressure ring; 12. Through hole; 13. Spring push plate one; 14. Spring push plate two; 15. Elastic part two; 16. Sealing sleeve. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] like Figures 1 to 4As shown, the present invention is a device for tunnel drainage, comprising a supporting layer 1, a plurality of seepage pipes 2, a water collecting concealed pipe 3, a sponge tube 4 and a water storage tube 5, wherein the water collecting concealed pipe 3 is installed in an arc shape on the inner wall of the supporting layer 1, one end of the seepage pipe 2 is fixedly installed on the water collecting concealed pipe 3, and the other end of the seepage pipe 2 passes through the supporting layer 1 and extends into the rock layer outside the supporting layer 1, a water inlet filter hole 21 is opened on the top of the side of the seepage pipe 2, the sponge tube 4 is slidably installed in the seepage pipe 2, and the water storage tube 5 is clamped in the water collecting concealed pipe 3.

[0042] The water storage cylinder 5 is composed of a cylinder with an open upper end and a closed lower end, and a square frame located at the upper end of the cylinder. A retractable spherical block is installed on the outside of the square frame. A mounting hole for installing the square frame is opened on the water collecting pipe 3. A spherical groove matching the spherical block is opened on the inner wall of the mounting hole, and the lower end extends out of the inner side surface of the water collecting pipe 3.

[0043] There is a drainage cavity 6 connecting the water storage cylinder 5 and the sponge cylinder 4. A drainage channel 7 connected to the outside is provided on the drainage cavity 6. A valve assembly for controlling the opening and closing of the drainage channel 7 is arranged in the drainage channel 7. An overflow hole 10 connected to the water collecting hidden pipe 3 is provided on the water storage cylinder 5. The rock seepage water enters the sponge cylinder 4 through the seepage pipe 2. The rock seepage water is filtered by the sponge cylinder 4 and becomes clean water and enters the drainage cavity 6. The clean water enters the water storage cylinder 5 through the drainage cavity 6. When the clean water in the water storage cylinder 5 overflows the overflow hole 10, the excess clean water enters the water collecting hidden pipe 3 through the overflow hole 10.

[0044] like Figures 1 to 7 As shown, the valve assembly includes a pressure ring 11, a spring push plate 13 and a spring push plate 2 14. The pressure ring 11 is slidingly sealed and installed in the water storage cylinder 5. The pressure ring 11 is connected to the bottom of the water storage cylinder 5 through an elastic member 2 15. The pressure ring 11 is provided with a through hole 12 connecting the drainage chamber 6 and the water storage cylinder 5. A spring push plate 13 is horizontally slidably installed on the pressure ring 11. The spring push plate 13 and the pressure ring 11 are connected through a spring 1. The lower side of the end of the spring push plate 13 away from the pull rod 81 is chamfered. A horizontal slide groove connected to the vertical section of the drainage channel 7 is provided at the upper end of the water storage cylinder 5. The spring push plate 2 14 is slidably installed in the horizontal slide groove. The spring push plate 2 14 and the water storage cylinder 5 are connected through a spring 2. The elastic coefficient of the spring 2 is smaller than the elastic coefficient of the spring 1.

[0045] When the pressure ring 11 is located at the top of the water storage cylinder 5, the spring push plate 13 slides radially outward along the pressure ring 11 under the push of the spring 1 and pushes the spring push plate 2 14 to slide toward the drainage channel 7, so that the spring push plate 2 14 is inserted into the drainage channel 7 to close the drainage channel 7. At the same time, the spring push plate 13 slides radially outward along the pressure ring 11 to move away from the upper end of the through hole 12 and thus open the through hole 12. When the pressure ring 11 is away from the drainage cavity 6, the chamfer of the spring push plate 13 resists the water storage cylinder 5 to make the spring push plate 13 retract, and then the spring push plate 13 closes the through hole 12. At the same time, the spring push plate 2 14 withdraws from the drainage channel 7 under the push of the spring 2, thereby opening the drainage channel 7.

[0046] like Figures 1 to 5 As shown, since the surface of the sponge tube 4 will be covered with a layer of impurities after filtering for a period of time, resulting in a decrease in the filtering efficiency, a cleaning mechanism 8 is also provided on the water storage tube 5, and the cleaning mechanism 8 includes a pull rod 81, a sealing plate 82, an elastic member 83 and a flushing assembly 84. The pull rod 81 passes through the bottom of the water storage tube 5 and is slidably installed on the water storage tube 5. The upper side of the pull rod 81 passes through the sponge tube 4 and is fixedly connected to the sponge tube 4. The top of the pull rod 81 is installed with a sealing plate 82 that is compatible with the seepage pipe 2. The sealing plate 82 is located at the top of the sponge tube 4. The lower end of the pull rod 81 is installed with a frustum. The diameter of the frustum is larger than the inner diameter of the water storage tube 5. Elastic member 83 is installed at the bottom of the frustum and the water storage tube 5. The diameter of the water storage tube 5 is smaller than the diameter of the sponge tube 4. When the pull rod 81 slides toward the inner side of the supporting layer 1, it drives the sponge tube 4 into the water storage tube 5. When the sealing plate 82 enters the drainage cavity 6, the flushing assembly 84 passes the clean water in the water storage tube 5 into the drainage cavity 6.

[0047] like Figures 1 to 5 As shown, the flushing assembly 84 includes a water spray chamber 841, an energy storage plate 842, an elastic member 843, a water outlet channel 844 and a water inlet hole 845. The water spray chamber 841 is opened in the pull rod 81, and the energy storage plate 842 is slidably installed in the water spray chamber 841. An elastic member 843 is installed between the energy storage plate 842 and the bottom end of the water spray chamber 841. A water inlet hole 845 connected to the water storage cylinder 5 is opened on the side wall of the water spray chamber 841, and the water inlet hole 845 is located between the energy storage plate 842 and the pressure ring 11. A one-way valve is installed in the water inlet hole 845. The clean water can only enter the water spray chamber 841 from the water inlet hole 845. A water outlet channel 844 is opened at the top of the water spray chamber 841. The other end of the water outlet channel 844 is located at the edge of the sealing plate 82. When the sealing plate 82 enters the drainage chamber 6, the water outlet channel 844 is connected with the drainage chamber 6. The elastic member 843 is released to push the energy storage plate 842 to move toward the water outlet channel 844. The energy storage plate 842 discharges the clean water into the drainage chamber 6 through the water outlet channel 844, thereby flushing the drainage chamber 6 to prevent the drainage chamber 6 from accumulating impurities and causing blockage.

[0048] like Figures 1 to 4As shown, a sealing sleeve 16 is rotatably installed in the seepage pipe 2, and a sealing filter hole opposite to the water inlet filter hole 21 is opened on the side of the sealing sleeve 16, and a spiral groove is opened on the peripheral side of the sealing plate 82. A protrusion is set on the upper side of the inner peripheral surface of the sealing sleeve 16, and the protrusion slides in the spiral groove. When the sealing plate 82 slides toward the drainage chamber 6, it drives the sealing sleeve 16 to rotate, so that the sealing filter hole and the water inlet filter hole 21 are staggered, thereby sealing the seepage pipe 2, thereby stopping water from seeping into the seepage pipe 2.

[0049] The working principle of the present invention is:

[0050] The rock seepage water first enters the sponge tube 4 through the water inlet filter hole 21 on the seepage pipe 2, and then enters the water storage tube 5 after being filtered by the sponge tube 4. When the water in the water storage tube 5 overflows the overflow hole 10, it enters the water collecting concealed pipe 3. After the sponge tube 4 has been used for a period of time, the pull rod 81 is pulled into the tunnel to make the sponge tube 4 enter the water storage tube 5. Since the diameter of the water storage tube 5 is smaller than the diameter of the sponge tube 4, when the sponge tube 4 enters the water storage tube 5, the sponge tube 4 will shrink at the upper end edge of the water storage tube 5, thereby squeezing the clean water in the sponge tube 4 out from the side of the sponge tube 4 in the opposite direction, and then flushing the side of the sponge tube 4. When the sealing plate 82 slides in the direction of the drainage chamber 6, the sealing plate 82 will drive the sealing sleeve 16 to rotate, thereby sealing the seepage pipe 2, so that the clean water squeezed out of the sponge tube 4 can only be discharged in the drainage chamber 6. At the same time, when the sponge tube 4 enters the storage When the water is in the water cylinder 5, the pressure ring 11 is pressed to move toward the bottom of the water storage cylinder 5. When the pressure ring 11 moves toward the bottom of the water storage cylinder 5, it squeezes the clean water in the water storage cylinder 5 after passing over the overflow hole 10, so that the clean water in the water storage cylinder 5 enters the water spray chamber 841 through the water inlet hole 845. After the clean water enters the water spray chamber 841, the energy storage plate 842 moves to the bottom of the water spray chamber 841 and then stores energy for the elastic member 843. When the sealing plate 82 enters the drainage chamber 6, the water outlet channel 844 is connected with the drainage chamber 6, and the elastic member 843 releases and pushes the energy storage plate 842 to move in the direction of the water outlet channel 844. The energy storage plate 842 discharges the clean water into the drainage chamber 6 through the water outlet channel 844, thereby flushing the drainage chamber 6 to prevent the drainage chamber 6 from accumulating impurities and causing blockage. When resetting, the pull rod 81 moves in the direction of the seepage pipe 2 under the drive of the elastic member three 83 until the resetting is completed.

[0051] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A device for tunnel drainage, comprising a supporting layer, a water collection concealed pipe and a plurality of seepage pipes, characterized in that: Also includes: A water inlet filter hole is provided on the top of the side of the seepage pipe, and a sponge tube is installed in the seepage pipe; A water storage cylinder, the diameter of which is smaller than that of the sponge cylinder, one end of which is arranged in a water collecting dark pipe, and the other end of which extends out of the inner side of the water collecting dark pipe, a drainage cavity connecting the water storage cylinder and the sponge cylinder, a drainage channel connecting to the outside world is provided on the drainage cavity, a valve assembly for controlling the opening and closing of the drainage channel is provided in the drainage channel, and an overflow hole connecting to the water collecting dark pipe is provided on the water storage cylinder; The cleaning mechanism includes a pull rod arranged on the sponge cylinder and passing through the water storage cylinder and a flushing assembly arranged on the pull rod. A sealing plate adapted to the seepage pipe is installed at the top of the pull rod. The sealing plate is located at the top of the sponge cylinder. When the pull rod slides toward the inner side of the supporting layer, the sponge cylinder is driven into the water storage cylinder. When the sealing plate enters the drainage cavity, the flushing assembly passes the clean water in the water storage cylinder into the drainage cavity. The valve assembly includes a compression ring that is slidingly and sealingly mounted in the gap between the water storage cylinder and the pull rod; The flushing assembly includes a water spray chamber arranged in the pull rod and an energy storage plate slidably installed in the water spray chamber, an elastic member is arranged between the energy storage plate and the bottom end of the water spray chamber, a water outlet channel is arranged at the top end of the water spray chamber, and the other end of the water outlet channel is located at the edge of the sealing plate. When the pull rod moves toward the inside of the tunnel, the water outlet channel is connected with the drainage chamber, and a water inlet hole connected with the water storage cylinder is opened on the side wall of the water spray chamber, and the water inlet hole is located between the energy storage plate and the pressure ring.

2. The device for tunnel drainage according to claim 1, characterized in that: A through hole connecting the drainage chamber and the water storage cylinder is opened on the pressure ring, and a spring push plate 1 for opening and closing the through hole is slidably installed on the pressure ring. When the pressure ring is located at the top of the water storage cylinder, the spring push plate 1 opens the through hole. When the pressure ring moves away from the drainage chamber, the spring push plate 1 abuts against the water storage cylinder to close the through hole.

3. The device for tunnel drainage according to claim 2, characterized in that: The valve assembly also includes a spring push plate 2 slidably mounted on the water storage cylinder for closing the drainage channel. When the pressure ring is located at the upper end of the water storage cylinder, the spring push plate 1 pops out to push the spring push plate 2 to close the drainage channel.

4. The device for tunnel drainage according to claim 3, characterized in that: A second elastic member is arranged between the pressure ring and the water storage cylinder.

5. The device for tunnel drainage according to claim 4, characterized in that: A sealing sleeve is rotatably installed in the seepage pipe, a sealing filter hole opposite to the water inlet filter hole is opened on the side of the sealing sleeve, a spiral groove is arranged between the sealing sleeve and the sealing plate, and when the sealing plate slides toward the drainage cavity, the sealing sleeve is driven to rotate so that the sealing filter hole and the water inlet filter hole are staggered, thereby sealing the seepage pipe.

6. The device for tunnel drainage according to claim 1, characterized in that: The water storage cylinder can be detachably mounted on the water collecting concealed pipe.

7. A drainage method for a device for tunnel drainage, characterized in that: A device for tunnel drainage according to any one of claims 1 to 6 is used, comprising the following steps: S1. Tunnel seepage water first enters the sponge cylinder through the seepage pipe, then enters the water storage cylinder after passing through the sponge cylinder. When the water in the water storage cylinder overflows the overflow hole, it enters the water collection hidden pipe; S2. After the sponge tube has been used for a period of time, the pull rod is pulled to make the sponge tube enter the water storage tube to clean the sponge tube. After the sealing plate enters the drainage cavity, the water spray assembly flushes the drainage cavity; S3. After the sponge tube has been used for a long time, the water storage tube should be removed from the water collecting concealed pipe and the sponge tube should be replaced.

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