Vertical drainage pipe integrated system based on drainage anti-seismic principle

Abstract

The invention particularly relates to a vertical drainage pipe integrated system based on a drainage anti-seismic principle, and belongs to the technical field of foundation solidification. The vertical drainage pipe integrated system based on the drainage anti-seismic principle is applied to a liquefiable foundation and comprises a plurality of underground drainage channels, the axes of the underground drainage channels are vertically arranged, a plurality of water seepage holes are formed in the peripheral walls of the underground drainage channels, the underground drainage channels are inserted into the foundation, and inverted filter wrapping structures are arranged on the peripheral walls of the underground drainage channels. And pore water in the soil body can enter the underground drainage channel through the water seepage holes of the underground drainage channel, so that the soil body is solidified, the foundation is settled, the strength of the foundation can be gradually improved, and the earthquake resistance and disaster reduction performance of the foundation is improved.

Description

Technical Field

[0001] This invention belongs to the field of foundation consolidation technology, specifically relating to a complete set of vertical drainage pipe systems based on the principle of drainage and earthquake resistance. Background Technology

[0002] Liquefiable foundations are foundations composed of saturated, loose soil layers such as sand or silt. Liquefaction is a significant technical challenge in liquefiable foundations. Liquefaction refers to the phenomenon where, under dynamic loads such as earthquakes or vibrations, the pore water pressure rises sharply, causing a sudden loss of shear strength in the soil, resulting in a state similar to liquid flow. This phenomenon can cause severe damage to building structures and is a major risk factor in geotechnical and earthquake engineering. Therefore, improving the seismic resistance and disaster mitigation performance of liquefiable foundations is an urgent technical problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a complete set of vertical drainage pipe systems based on the principle of drainage and earthquake resistance, which can improve the earthquake resistance and disaster reduction performance of liquefiable foundations.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: This application provides a complete set of vertical drainage pipe systems based on the principle of drainage and earthquake resistance, which is applied to liquefiable foundations. The system includes multiple underground drainage channels, with the axis of the underground drainage channels set vertically. The periphery of the underground drainage channels is provided with multiple seepage holes. The underground drainage channels are inserted into the foundation, and the periphery of the underground drainage channels is provided with a reverse filter wrapping structure.

[0005] In some embodiments, the system may also include an above-ground drainage component, which includes a drainage cushion layer laid on a stable foundation stratum, with the top port of the underground drainage channel penetrating through the drainage cushion layer; or, it may include a water storage tank, with the top port of the underground drainage channel communicating with the water storage tank.

[0006] In some embodiments, the water storage tank is provided with a liquid level detection component.

[0007] In some embodiments, the filter wrapping structure includes multiple layers of geotextile and a layer of crushed stone. The multiple layers of geotextile are arranged around the perimeter of the underground drainage channel, and the crushed stone layer is arranged around the circumference of the multiple layers of geotextile.

[0008] In some embodiments, the underground drainage channel includes a large-diameter section and a small-diameter section connected in sequence, with the large-diameter section located at the top.

[0009] In some embodiments, the device further includes an installation apparatus comprising a sleeve and a closed arc-shaped plate. The sleeve is in the shape of a partially hollow cylinder, and an arc-shaped groove is provided on the circumferential wall of the sleeve. The closed arc-shaped plate is inserted into the arc-shaped groove, and the closed arc-shaped plate closes the notch of the sleeve. The underground drainage channel is accommodated in the sleeve, and the underground drainage sleeve is configured to have a closing plate at its bottom.

[0010] In some embodiments, the arcuate groove includes a first side and a second side. A closed arcuate plate is configured to be inserted into the first side. The mounting device further includes a drive assembly comprising two pulleys and a traction cable. The pulleys are housed on the second side of the arcuate groove and are rotatably connected to the inner wall of the arcuate groove. The axis of rotation for sliding is perpendicular to the axis of the sleeve. The two pulleys are spaced apart along the axial direction of the sleeve. The traction cable is positioned corresponding to the two pulleys. A through hole is provided on the top end wall of the sleeve, through which the traction cable passes. The traction cable is wound around the pulleys and connected to the closed arcuate plate.

[0011] In some embodiments, a protrusion is provided on the side of the closed arc plate facing the second side, and the protrusion is configured such that when the closed arc plate is inserted into the second side, the protrusion is located between the two pulleys.

[0012] In some embodiments, along the axial direction of the pulley, a plurality of limiting portions are movably provided on the two end faces of the pulley, the plurality of limiting portions are arranged around the circumference of the pulley, the limiting portions are movably connected to the pulley along the radial direction of the pulley, the limiting portions protrude from the circumferential wall of the pulley, and the traction cable is disposed between the limiting portions on the two end faces.

[0013] In some embodiments, a winding roll is further included, which is rotatably connected to the sleeve, and one end of the traction cable disposed outside the sleeve is wound around the winding roll.

[0014] The present invention has the following beneficial effects: 1. The seepage holes in the underground drainage channels allow pore water in the soil to enter the underground drainage channels, which consolidates the soil, causes the foundation to settle, and gradually increases the strength of the foundation, thereby improving the foundation's seismic resistance and disaster reduction performance.

[0015] 2. By setting a reverse filter wrapping structure on the perimeter of the underground drainage channel, the risk of seepage holes being blocked by soil is reduced, ensuring the drainage effect of the underground drainage channel.

[0016] 3. The overall structure is easy to install and maintain. Attached Figure Description

[0017] Figure 1 A schematic diagram showing the installation of underground drainage channels in the foundation (the drainage cushion layer is shown); Figure 2 A schematic diagram showing the underground drainage channel in the foundation (showing the water storage tank); Figure 3 A schematic diagram of the plum blossom arrangement of underground drainage channels; Figure 4 A schematic diagram showing the installation of seepage holes in an underground drainage channel; Figure 5 This is a schematic diagram of the installation device of the present invention; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 for Figure 5 Enlarged view of point B; Figure 8 for Figure 7 Enlarged view of point C.

[0018] Reference numerals: 1-Foundation, 2-Underground drainage channel, 3-Drainage cushion layer, 4-Water storage tank, 5-Seepage hole, 6-Casing, 7-Closed arc plate, 8-Arch groove, 9-Traction cable, 10-Winding roller, 11-Second side, 12-First side, 13-Closed plate, 14-Protrusion, 15-Pulley, 16-Limiting part. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0020] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] This application provides a complete set of vertical drainage pipes based on the principle of drainage and earthquake resistance, which is applied to liquefiable foundations. It includes multiple underground drainage channels 2, the axis of the underground drainage channels 2 is set vertically, the periphery of the underground drainage channels 2 is provided with multiple seepage holes 5, the underground drainage channels 2 are inserted into the foundation 1, and the periphery of the underground drainage channels 2 is provided with a reverse filter wrapping structure.

[0022] The underground drainage channel 2 can be made of PVC material, which has excellent resistance to acid, alkali and chemical corrosion, thus improving the service life of the underground drainage channel 2.

[0023] This system is applicable to the drainage consolidation method for foundation 1. The specific principles of the drainage consolidation method and the other equipment required for its implementation are well known to those skilled in the art and will not be elaborated here. In this system, the seepage holes 5 of the underground drainage channel 2 allow pore water in the soil to enter the underground drainage channel 2, causing soil consolidation, settlement of foundation 1, and thus gradually increasing the strength of foundation 1, thereby improving its seismic resistance and disaster reduction performance.

[0024] By setting a reverse filter wrapping structure on the perimeter wall of the underground drainage channel 2, the risk of the seepage holes 5 being blocked by the soil is reduced, thus ensuring the drainage effect of the underground drainage channel 2.

[0025] Multiple underground drainage channels 2 can be arranged in a quincunx pattern in the foundation 1, which improves the coverage of the underground drainage channels 2 and increases the drainage range.

[0026] In some embodiments, the system may also include an above-ground drainage component, which includes a drainage cushion layer 3 laid on the stable stratum of the foundation 1, with the top port of the underground drainage channel 2 penetrating through the drainage cushion layer 3; or, it may include a water storage tank 4, with the top port of the underground drainage channel 2 communicating with the water storage tank 4.

[0027] The drainage cushion layer 3 may include sand, gravel or slag cushion layer, and plastic drainage board or horizontal drainage pipe may also be installed as needed. The specific arrangement of the constituent materials of the drainage cushion layer 3 can refer to the existing arrangement method that includes the above materials.

[0028] The drainage cushion layer 3 is usually set in a stable stratum above the groundwater level. The drainage cushion layer 3 plays the role of draining pore water, and at the same time, it reduces the risk of water discharged from the underground drainage channel 2 entering the overlying surface and affecting the superstructure.

[0029] The water storage tank 4 and the drainage bedding layer 3 can be selected as needed. For example, if the cost of constructing the drainage bedding layer 3 is too high, the water storage tank 4 can be used instead.

[0030] The top port of the underground drainage channel 2 is connected to the water storage tank 4, so that the discharged water can be stored in the water storage tank 4.

[0031] In some embodiments, the water storage tank 4 is provided with a liquid level detection component.

[0032] The liquid level inspection component is used to detect changes in the water volume of the water storage tank 4, which can provide guidance for subsequent construction.

[0033] The liquid level detection component can be selected from existing technologies. For example, a liquid level sensor can be installed in the water storage tank 4, and the liquid level sensor is connected to the host computer so that it can detect the liquid level.

[0034] In some embodiments, a pore pressure sensor may be installed at the seepage hole 5 of the underground drainage channel 2 to monitor the drainage situation and provide guidance for construction personnel to take targeted measures to improve the strength of the foundation 1.

[0035] The pore pressure sensor can be selected from existing products. The specific circuit, control code, and working principle of its electrical connection with the host computer are well known to those skilled in the art and will not be described in detail here.

[0036] In some embodiments, the filter wrapping structure includes multiple layers of geotextile and a layer of crushed stone. The multiple layers of geotextile are arranged around the perimeter of the underground drainage channel 2, and the crushed stone layer is arranged around the circumference of the multiple layers of geotextile.

[0037] The outer geotextile can be selected from existing technologies with higher strength, enabling it to provide water permeability, mud prevention, and puncture and cut resistance. The inner geotextile can be a non-woven geotextile with a permeability coefficient greater than 1.0×10-2 cm / s, ensuring that the underground drainage channel 2 always has high permeability and reducing the risk of siltation inside the underground drainage channel 2.

[0038] Multiple layers of geotextile can be bonded together using adhesives or by heat fusion bonding. The specific adhesives used and the heat fusion bonding methods are well known to those skilled in the art and will not be described in detail here.

[0039] The gravel layer allows water to pass through while preventing fine soil particles from being carried away by the water flow, thus protecting the soil. Furthermore, the gravel layer also protects the underground drainage channel 2.

[0040] The port of the seepage hole 5 near the outer wall of the underground drainage channel 2 can protrude from the outer wall of the underground drainage channel 2. This setting can reduce the risk that the seepage hole 5 will be blocked due to the geotextile being wrapped around the outer wall of the underground drainage channel 2, such as the geotextile being folded or recessed into the seepage hole 5.

[0041] In some embodiments, the underground drainage channel 2 includes a large-diameter section and a small-diameter section connected in sequence, with the large-diameter section located at the top.

[0042] The smaller bottom diameter reduces the pressure and disturbance to the soil when the underground drainage channel 2 is driven into the foundation 1. Furthermore, the smaller bottom diameter enables it to adapt to deep, high confining pressure environments, reducing the risk of the underground drainage channel 2 collapsing.

[0043] This application embodiment also provides an installation device applied to the system in the above embodiment, including a sleeve 6 and a closed arc-shaped plate 7. The sleeve 6 is a partially hollow cylinder, and an arc-shaped groove 8 is provided on the peripheral wall of the sleeve 6 along the circumference. The closed arc-shaped plate 7 is inserted into the arc-shaped groove 8, and the closed arc-shaped plate 7 closes the notch of the sleeve 6. The underground drainage channel 2 is accommodated in the sleeve 6, and the underground drainage sleeve 6 is configured to have a closing plate 13 at the bottom.

[0044] The installation device of this application embodiment can be adapted to the insertion plate device in the prior art, that is, the sleeve 6 is connected to the body of the insertion plate device, and the sleeve 6 is inserted into the ground through the insertion plate device.

[0045] Under the action of the arc-shaped groove 8, the combination of the sleeve 6 and the closed arc-shaped plate 7 includes two states. In one state, the two ends of the closed arc-shaped plate 7 are respectively inserted into the two ends of the arc-shaped groove 8, and the sleeve 6 and the closed arc-shaped plate 7 form a complete hollow columnar structure. In the other state, the closed arc-shaped plate 7 slides into the arc-shaped groove 8, at which time the sleeve 6 is opened.

[0046] As mentioned above, in some embodiments, when the underground drainage channel 2 is inserted into the foundation 1, its perimeter can be filled with a layer of gravel. However, if the underground drainage channel 2 is directly inserted into the foundation 1, it is impossible to fill it with a layer of gravel. Therefore, the gravel layer and the underground drainage channel 2 can be inserted into the foundation 1 together to solve the above problem.

[0047] Specifically, initially, the sleeve 6 is in the open state. After the underground drainage channel 2 is inserted into the sleeve 6, a layer of gravel is filled into the outer wall of the underground drainage channel 2. Then, the sleeve 6 is sealed by the sealing arc plate 7. The sleeve 6, containing the underground drainage channel 2 and the gravel layer, is inserted into the foundation 1 through the insertion plate device. Then, the sealing arc plate 7 is opened to facilitate the discharge of the gravel layer and release the fixing effect on the underground drainage channel 2. Finally, the sleeve 6 is lifted to complete its function.

[0048] In this embodiment, the gravel layer can also serve to fix the underground drainage channel 2 within the casing 6.

[0049] The sealing plate 13 serves two purposes. First, it seals the bottom of the casing 6. Specifically, the sealing plate 13 is sized to cover the gap between the casing 6 and the underground drainage channel 2, but does not protrude from the outer wall of the casing 6, reducing the risk of the gravel layer leaking out from the bottom of the casing 6 when the casing 6 is lifted before being inserted into the foundation 1. Second, after the underground drainage channel 2 is inserted into the foundation 1, when the casing 6 is lifted, the gravel layer and some soil press on the sealing plate 13, allowing the sealing plate 13 to limit the underground drainage channel 2 and prevent it from being lifted along with the casing 6.

[0050] In some embodiments, the arcuate groove 8 includes a first side 12 and a second side 11. The closed arcuate plate 7 is configured to be inserted into the first side 12. The mounting device further includes a drive assembly, which includes two pulleys 15 and a traction cable 9. The pulleys 15 are housed in the second side 11 of the arcuate groove 8 and are rotatably connected to the inner wall of the arcuate groove 8. The axis of rotation of the pulleys 15 is perpendicular to the axis of the sleeve 6. The two pulleys 15 are spaced apart along the axial direction of the sleeve 6. The traction cable 9 is provided corresponding to the two pulleys 15. The top end wall of the sleeve 6 is provided with a through hole, through which the traction cable 9 passes. The traction cable 9 is wound around the pulleys 15 and connected to the closed arcuate plate 7.

[0051] The closed arc plate 7 can remain inserted on the first side 12. When the closed arc plate 7 is inserted into the second side 11, the sleeve 6 is closed. When the closed arc plate 7 is removed from the second side 11, the sleeve 6 is opened.

[0052] The drive assembly is used to move the closed arc plate 7 after the sleeve 6 is inserted into the foundation 1, so as to open the sleeve 6. Specifically, after the sleeve 6 is inserted into the foundation 1, the traction cable 9 is pulled, and the traction cable 9 then pulls the closed arc plate 7, so that the closed arc plate 7 can move into the arc groove 8 and open the sleeve 6.

[0053] The through hole can be set on the top end wall of the sleeve 6 near the second side 11 of the arc groove 8.

[0054] The number of pulleys 15 corresponding to the number of traction cables 9 is set such that a section of traction cable 9 is set at each pulley 15.

[0055] The pulley 15 serves two purposes: firstly, it guides the traction cable 9, allowing force to be applied to the traction cable 9 from the end of the sleeve 6, pulling the closed arc plate 7 into the arc groove 8. Secondly, the pulley 15 supports the traction cable 9, enabling it to shield the second side 11 and reduce the risk of soil entering the arc groove 8 from the second side 11. Specifically, since the two pulleys 15 are housed on the second side 11 of the arc groove 8, the traction cable 9 is wound around the pulley 15 from the side closest to the second side 11, and after being turned by the pulley 15, it extends into the arc groove 8 and connects to the closed arc plate 7. When the operator applies force to the traction cable 9, part of the traction cable 9 is taut along the axial direction of the sleeve 6. This part of the traction cable 9 can shield the second side 11, reducing the risk of external soil entering the arc groove 8 from the second side 11 and blocking the arc groove 8. Since the pulley 15 is located away from the second side 11 of the traction cable 9 which is taut along the axial direction of the sleeve 6, the pulley 15 can support the traction cable 9.

[0056] In some embodiments, the closed arc plate 7 is provided with a protrusion 14 on the side facing the second side 11. The protrusion 14 is configured such that when the closed arc plate 7 is inserted into the second side 11, the protrusion 14 is disposed between the two pulleys 15.

[0057] The protrusion 14 increases the fitting accuracy between the closed arc plate 7 and the arc groove 8. On the other hand, when the protrusion 14 is inserted between the two pulleys 15, the traction cable 9 is partially set between the pulleys 15 and the protrusion 14. The traction cable 9 can increase the clamping force of the pulleys 15 on the protrusion 14, so that the traction cable 9 can play the role of fixing the closed arc plate 7.

[0058] It should be noted that since the traction cable 9 is set in two sections, when the traction cable 9, which is wound around the pulley 15 away from the through hole of the sleeve 6, is inserted between the two pulleys 15 at the protrusion 14, it needs to be on the side of the protrusion 14 facing the inside of the arc groove 8. In this way, by pulling the traction cable 9 at the pulley 15, the closed arc plate 7 can be pushed out to the second side 11 through the traction cable 9.

[0059] In some embodiments, along the axial direction of the pulley 15, a plurality of limiting portions 16 are movably provided on the two end faces of the pulley 15, the plurality of limiting portions 16 are arranged around the circumference of the pulley 15, the limiting portions 16 are movably connected to the pulley 15 along the radial direction of the pulley 15, the limiting portions 16 protrude from the peripheral wall of the pulley 15, and the traction cable 9 is disposed between the limiting portions 16 on the two end faces.

[0060] An elastic element, such as a spring, may be provided between the limiting part 16 and the pulley 15. The elastic element is used to provide an elastic force to reset the limiting part 16.

[0061] When the protrusion 14 is inserted between the two pulleys 15, along the axial direction of the sleeve 6, the two sides of the protrusion 14 abut against the limiting parts 16 of the two pulleys 15 respectively. The limiting parts 16 are pushed to move radially towards the pulleys 15. Under the action of the elastic restoring force of the limiting parts 16, the limiting parts 16 press tightly against the side wall of the protrusion 14 along the axial direction of the sleeve 6, which increases the limiting effect of the pulleys 15 on the arc-shaped closed plate 13.

[0062] After the arc-shaped sealing plate 13 moves out of the second side 11, the limiting part 16 moves away from the axis of the pulley 15. This increases the limiting effect of the limiting part 16 on the traction cable 9 and reduces the risk of the traction cable 9 disengaging from the pulley 15 when it is taut. This improves the driving reliability of the traction cable 9 on the arc-shaped sealing plate 13 and ensures the sealing effect of the traction cable 9 on the second side 11.

[0063] In some embodiments, a winding roll 10 is also included, which is rotatably connected to the sleeve 6, and one end of the traction cable 9 disposed outside the sleeve 6 is wound around the winding roll 10.

[0064] The winding and unwinding roller 10 is used to wind or unwind the traction cable 9.

[0065] The specific drive device for the unwinding roller 10 can be selected from existing equipment, and will not be described in detail here.

[0066] Since the traction cable 9 is set in two segments, and since the portion of the traction cable 9 on the pulley 15 away from the through hole is pushed into the arc groove 8 when the protrusion 14 is inserted between the two pulleys 15, the winding length of the traction cable 9 on the pulley 15 is longer when winding up the traction cable 9 on the pulley 15. Therefore, in order to enable the two traction cables 9 to drive the closed arc plate 7 to move synchronously, the winding and unwinding rollers 10 can be set to two, with each segment of the traction cable 9 wound on a different winding and unwinding roller 10, so that the winding of the traction cable 9 by the two rollers can be controlled separately. For example, when the closed arc plate 7 exits from the arc groove 8, the traction cable 9 on the pulley 15 away from the through hole can be controlled to push out the closed arc plate 7 and straighten it first, and then the traction cable 9 on the pulley 15 near the through hole can be controlled to straighten. Then the two winding and unwinding rollers 10 rotate synchronously, so that the closed arc plate 7 can retract into the arc groove 8 from the first side 12.

[0067] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A complete set of vertical drainage pipe systems based on the principle of drainage and earthquake resistance, applied to liquefiable foundations, characterized in that, include: Multiple underground drainage channels (2) are vertically arranged with their axes. The perimeter of each underground drainage channel (2) is provided with multiple seepage holes (5). The underground drainage channel (2) is inserted into the foundation (1). The perimeter of each underground drainage channel (2) is provided with a reverse filter wrapping structure.

2. The vertical drainage pipe system based on the principle of drainage and earthquake resistance as described in claim 1, characterized in that, It also includes above-ground drainage components, which include a drainage cushion layer (3) laid on the stable stratum of the foundation (1), and the top port of the underground drainage channel (2) penetrates the drainage cushion layer (3), or includes a water storage tank (4), and the top port of the underground drainage channel (2) is connected to the water storage tank (4).

3. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 2, characterized in that, The water storage tank (4) is equipped with a liquid level inspection component.

4. The vertical drainage pipe system based on the principle of drainage and earthquake resistance as described in claim 1, characterized in that, The reverse filter encapsulation structure includes: Multiple layers of geotextile are arranged around the perimeter of the underground drainage channel (2); A layer of crushed stone is arranged circumferentially around the multi-layered geotextile.

5. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 1, characterized in that, The underground drainage channel (2) includes a large-diameter section and a small-diameter section connected in sequence, with the large-diameter section located at the top.

6. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to any one of claims 1-5, characterized in that, It also includes an installation device, which includes: The sleeve (6) is in the shape of an incompletely hollow cylinder, and an arc-shaped groove (8) is provided on the circumferential wall of the sleeve (6). A closed arc plate (7) is inserted into the arc groove (8). The closed arc plate (7) closes the notch of the sleeve (6). The underground drainage channel (2) is accommodated in the sleeve (6). The underground drainage sleeve (6) is configured with a closing plate (13) at the bottom.

7. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 6, characterized in that, The arc-shaped groove (8) includes a first side (12) and a second side (11), the closed arc-shaped plate (7) is configured to be inserted into the first side (12), and the mounting device further includes a driving assembly, the driving assembly comprising: Two pulleys (15) are housed on the second side (11) of the arc groove (8). The pulleys (15) are rotatably connected to the inner wall of the arc groove (8). The axis of rotation of the sliding is perpendicular to the axis of the sleeve (6). The two pulleys (15) are spaced apart along the axial direction of the sleeve (6). The traction cable (9) is provided corresponding to the two pulleys (15). The top end wall of the sleeve (6) is provided with a through hole. The traction cable (9) passes through the through hole and is wound around the pulley (15). The traction cable (9) is connected to the closed arc plate (7).

8. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 7, characterized in that, The closed arc plate (7) has a protrusion (14) on the side facing the second side (11). The protrusion (14) is configured such that when the closed arc plate (7) is inserted into the second side (11), the protrusion (14) is located between the two pulleys (15).

9. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 7, characterized in that, Along the axial direction of the pulley (15), a plurality of limiting parts (16) are movably provided on the two end faces of the pulley (15). The plurality of limiting parts (16) are arranged around the circumference of the pulley (15). The limiting parts (16) are movably connected to the pulley (15) along the radial direction of the pulley (15). The limiting parts (16) protrude from the peripheral wall of the pulley (15). The traction cable (9) is disposed between the limiting parts (16) on the two end faces.

10. The vertical drainage pipe system based on the principle of drainage and earthquake resistance according to claim 7, characterized in that, It also includes a winding and unwinding roller (10), which is rotatably connected to the sleeve (6), and the traction cable (9) is located at one end outside the sleeve (6) and wound around the winding and unwinding roller (10).

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