Waterproof structure

Abstract

The utility model relates to the technical field of foundation drainage, disclose waterproof structure, including pit structure, extraction structure and waterproof structure, pit structure includes mutually isolated sump and placement pit, placement pit sets up in the one side of sump far away from ground, extraction structure includes extraction piece, conveying piece and switch spare, extraction piece sets up in the placement pit, the one end of conveying piece communicates with the output of extraction piece, and the other end passes through placement pit and sump and communicates with outside, switch spare sets up on conveying piece and is located in sump, switch spare has the communication state of communication extraction piece with outside and the cut-off state of cutting off extraction piece with outside, and extraction piece is suitable for through conveying piece and extracts groundwater to outside, waterproof structure includes first filler and second filler, first filler sets up on the peripheral wall surface of sump, and second filler sets up in sump and wraps switch spare to block conveying piece through switch spare, the utility model is favorable to improve the waterproof effect of sump.

Description

Technical Field

[0001] This utility model relates to the field of basic drainage technology, specifically to waterproof structures. Background Technology

[0002] In construction projects, waterproofing the basement elevator sump is crucial. Due to its unique geographical location, the basement is susceptible to groundwater seepage. Inadequate waterproofing of the sump can lead to water accumulation in the basement, which not only affects the normal operation of the elevator but may also threaten the structural safety of the building, such as corroding steel bars and reducing the strength of concrete.

[0003] Currently, some waterproofing methods for basement elevator sump pits employ relatively simple structures, resulting in poor waterproofing performance. Under prolonged groundwater pressure, leakage is likely to occur. For example, traditional waterproof membrane installation methods struggle to achieve complete sealing in complex areas such as corners and edges of the sump pit, easily creating gaps that provide pathways for groundwater seepage. Furthermore, some waterproofing methods are cumbersome, costly, and difficult to guarantee in terms of quality. For instance, some methods using multi-layer waterproof coatings require strict control of construction conditions and processes for each layer. Problems in any layer can affect the overall waterproofing effect, and multiple layers increase construction time and material costs. Therefore, existing methods for constructing basement elevator sump pits generally offer poor waterproofing performance. Utility Model Content

[0004] In view of this, the present invention provides a waterproof structure to solve the problem of poor waterproofing effect of existing construction methods for basement elevator sump pits.

[0005] In a first aspect, this utility model provides a waterproof structure, comprising:

[0006] The pit structure includes a water collection pit and a placement pit that are isolated from each other. The placement pit is located on the side of the water collection pit away from the ground, and the volume of the water collection pit is larger than the volume of the placement pit.

[0007] The extraction structure includes an extraction component, a conveying component, and a switching component. The extraction component is disposed in the placement pit. One end of the conveying component is connected to the output end of the extraction component, and the other end passes through the placement pit and the water collection pit to communicate with the outside. The switching component is disposed on the conveying component and located in the water collection pit. The switching component has a communication state that connects the extraction component to the outside and a state that isolates the extraction component from the outside. Under the pressure of groundwater, groundwater is suitable to permeate from the water collection pit into the placement pit. The extraction component is suitable to extract groundwater to the outside through the conveying component.

[0008] A waterproof structure includes a first filler and a second filler. The first filler is disposed on the peripheral wall of the water collection pit to form a cushion layer of the water collection pit. The second filler is disposed inside the water collection pit and encloses the switch to seal the conveying component through the switch.

[0009] Beneficial effects: The extraction component extracts groundwater from the placement pit and the sump pit, and the conveying component transports the groundwater to the outside, ensuring a dry environment inside the sump pit. The first filling component forms a cushion layer inside the sump pit for workers to work on, while the second filling component covers the switch on the conveying component, sealing it and preventing groundwater from the placement pit from flowing into the sump pit through the conveying component and the switch. This improves the waterproofing effect of the sump pit.

[0010] In one alternative embodiment, when the first filler is placed in the sump, the conveyor passes through the first filler;

[0011] The waterproof structure further includes a third filler and a first waterproof component. The third filler is disposed between the conveying component and the first filler to fill the gap between the conveying component and the first filler. The first waterproof component is disposed on the third filler.

[0012] Beneficial effects: By setting up a waterproof structure including a third filler and a first waterproof component, which in this embodiment are cement mortar and a waterproof additional layer, the first filler is placed in the sump pit. When the first filler is placed in the sump pit, the conveying component will pass through the first filler and communicate with the outside. At this time, the third filler is placed between the conveying component and the first filler, thereby filling the gap between the conveying component and the first filler. The second waterproof component is placed on the third filler, thereby preventing groundwater from seeping through the third filler, which helps to further improve the waterproof effect of the sump pit.

[0013] In one alternative embodiment, the waterproof structure further includes a second waterproof component and a seal, wherein the second waterproof component is laid on the outer surface of the first filler, avoiding the conveyor component, and the seal is disposed between the conveyor component and the second waterproof component.

[0014] Beneficial effects: The waterproof structure also includes a second waterproof component and a sealant. In this embodiment, the second waterproof component and the sealant are respectively a waterproof membrane and a sealant. The second waterproof component is laid on the outer surface of the first filler, avoiding the conveyor component. This prevents groundwater from seeping through the first filler component. The sealant is placed between the conveyor component and the second waterproof component to seal the gap between them and prevent groundwater from seeping through the gap.

[0015] In one optional embodiment, the extraction structure further includes an installation component and a filter component. The installation component is disposed within the placement pit and has an installation cavity with openings at both ends. The extraction component is disposed within the installation cavity. The filter component is disposed on the side of the installation component away from the water collection pit and covers one of the openings, connecting to the installation component.

[0016] Beneficial effects: The extraction structure also includes an installation component and a filter component. In this embodiment, the installation component and the filter component are respectively an installation steel pipe and a filter screen. The installation component is set in the placement pit and has an installation cavity with openings at both ends. The extraction component is set in the installation cavity, thus protecting the extraction component. The filter component is set on the side of the installation component away from the sump pit and covers one of the openings of the installation component and is connected to the installation component. In this way, the groundwater in the placement pit can only flow into the installation cavity through the filter component and be extracted by the extraction component into the conveying component, which helps to avoid the extraction component from malfunctioning due to excessive impurities in the groundwater.

[0017] In one optional embodiment, the pit structure further includes a plurality of laying elements, all of which are disposed within the placement pit and on the periphery of the mounting element, and the filter element is disposed between the mounting element and some of the laying elements.

[0018] Beneficial effects: The pit structure also includes several laying components, which are crushed stone in this embodiment. All laying components are placed in the placement pit and are located around the installation component. The filter component is located between the installation component and some of the laying components. In this way, the groundwater in the placement pit flows into the installation cavity through the opening of the installation component. The groundwater needs to be filtered by both the laying components and the filter component. This can further remove impurities in the groundwater and help to further avoid the situation where the extraction component malfunctions due to excessive impurities in the groundwater.

[0019] In one optional embodiment, the mounting component has a plurality of through-holes, any one of which connects the mounting cavity and the placement pit, and the size of the through-hole is smaller than the size of the laying component; under the pressure of groundwater, groundwater is suitable to flow into the mounting cavity through the laying component and the through-holes.

[0020] Beneficial effects: By creating several through-holes on the mounting component, which are through holes in this embodiment, each through-hole can connect the mounting cavity and the placement pit, and the size of each through-hole is smaller than the size of the laying component, so that the laying component will not enter the mounting cavity through the through-hole. In addition, under the pressure of groundwater, groundwater can flow into the mounting cavity through the laying component and the through-hole, which helps to increase the flow rate of groundwater into the mounting cavity, thereby avoiding damage to the extraction component due to idling.

[0021] In one optional embodiment, the extraction structure further includes a support member disposed at the opening of the placement pit to support the first filling member and isolate the water collection pit from the placement pit. Under the pressure of groundwater, groundwater is suitable to permeate the first filling member and the support member, thereby allowing the water collection pit to flow into the placement pit.

[0022] Beneficial effects: The extraction structure also includes a support member, which in this embodiment is a supporting wooden board. The support member is specifically set at the opening of the placement pit, so that when the first filler is placed in the water collection pit, the support member can provide support for the first filler, preventing the first filler from falling into the placement pit under the action of gravity and filling the placement pit, thus preventing the placement pit from becoming ineffective.

[0023] In one optional embodiment, the extraction structure further includes a water-stopping element disposed on the conveying element and located within the first filling element, the water-stopping element covering the opening of the placement pit to isolate groundwater on the side of the placement pit.

[0024] Beneficial effects: The extraction structure also includes a water-stopping component. In this embodiment, the water-stopping component is a water-stopping steel plate. The water-stopping component is specifically set on the conveying component and located inside the first filling component. When the water-stopping component is in place, it will cover the opening of the placement pit. In this way, when groundwater on the side of the placement pit seeps into the sump, the water-stopping component can block the groundwater and prevent groundwater on the side of the placement pit from seeping into the sump, which is beneficial to improving the waterproof effect of the sump.

[0025] In one alternative embodiment, when the second filler is placed in the sump, the second filler covers the outer surface of the first filler to compact the third filler, the first waterproofing element, the second waterproofing element, and the sealing element.

[0026] Beneficial effects: By placing the second filler in the sump and covering the outer surface of the first filler, the second filler can compact the third filler, the first waterproof component, the second waterproof component, and the sealant placed on the first filler under its own weight. The second filler can also isolate the third filler, the first waterproof component, the second waterproof component, and the sealant from the outside world, preventing damage from the influence of the external environment.

[0027] In one alternative embodiment, the second filler has a clearance portion adapted to accommodate an elevator.

[0028] Beneficial effects: By providing a second filling member with a clearance portion, which in this embodiment is a clearance groove, the elevator can be accommodated within the clearance portion, thereby ensuring the normal operation of the elevator. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a plan view of a waterproof structure according to an embodiment of the present utility model;

[0031] Figure 2 for Figure 1 A partial schematic diagram;

[0032] Figure 3 for Figure 2 A partial schematic diagram;

[0033] Figure 4 This is a plan view of a placement pit for a waterproof structure according to an embodiment of the present utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Pit structure; 11-Sump pit; 12-Placement pit; 13-Laying component;

[0036] 2-Extraction structure; 21-Extraction component; 22-Conveying component; 23-Switch component; 24-Mounting component; 241-Through section; 25-Filter component; 26-Support component; 27-Water-stop component;

[0037] 3-Waterproof structure; 31-First filler; 32-Second filler; 321-Allowing part; 33-Third filler; 34-First waterproof component; 35-Second waterproof component; 36-Sealing component. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, a waterproof structure 3 is provided, such as... Figures 1 to 4 As shown, the structure includes a pit structure 1, an extraction structure 2, and a waterproof structure 3. The pit structure 1 includes a water collection pit 11 and a placement pit 12 that are isolated from each other. The placement pit 12 is located on the side of the water collection pit 11 away from the ground, and the volume of the water collection pit 11 is larger than the volume of the placement pit 12. The extraction structure 2 includes an extraction component 21, a conveying component 22, and a switch component 23. The extraction component 21 is located inside the placement pit 12. One end of the conveying component 22 is connected to the output end of the extraction component 21, and the other end passes through the placement pit 12 and the water collection pit 11 to communicate with the outside. The switch component 23 is located on the conveying component 22 and is located inside the water collection pit 11. The switch 23 has a state of connecting the extraction component 21 to the outside and a state of isolating the extraction component 21 from the outside. Under the pressure of groundwater, groundwater is suitable to seep from the sump 11 into the placement pit 12. The extraction component 21 is suitable to extract the groundwater to the outside through the conveying component 22. The waterproof structure 3 includes a first filling component 31 and a second filling component 32. The first filling component 31 is disposed on the peripheral wall of the sump 11 to form a cushion layer of the sump 11. The second filling component 32 is disposed in the sump 11 and wraps the switch 23 to block the conveying component 22 through the switch 23.

[0041] The waterproof structure 3 described above is achieved by an extraction structure 2 and a waterproof structure 3 installed within the pit structure 1. The pit structure 1 includes a water collection pit 11 and a placement pit 12, which are isolated from each other. The placement pit 12 is located on the side of the water collection pit 11 away from the ground. This allows groundwater in the water collection pit 11 to seep into the placement pit 12 under the influence of gravity. In addition, the volume of the water collection pit 11 is larger than the volume of the placement pit 12.

[0042] The extraction structure 2 specifically includes an extraction component 21, a conveying component 22, and a switching component 23. In this embodiment, the extraction component 21, the conveying component 22, and the switching component 23 are respectively a water pump, a conveying pipe, and a switching valve. The extraction component 21 is installed in the placement pit 12. One end of the conveying component 22 is connected to the output end of the extraction component 21, and the other end passes through the placement pit 12 and the collection pit 11 to connect with the outside. This allows the groundwater in the placement pit 12 and the groundwater that seeps into the placement pit 12 from the collection pit 11 to be transported to the outside through the conveying component 22 under the extraction action of the extraction component 21. This ensures that the environment in the collection pit 11 is kept dry and facilitates waterproofing construction by workers in the collection pit 11.

[0043] In addition, the switch 23 is specifically installed on the conveying member 22, and the switch 23 has a connected state that connects the extraction member 21 to the outside world and a disconnected state that isolates the extraction member 21 from the outside world. In the connected state, the extraction member 21 can extract the groundwater in the placement pit 12 to the outside world through the conveying member 22. In the disconnected state, the extraction member 21 cannot connect to the outside world, so that the groundwater in the placement pit 12 cannot flow out to the outside world through the conveying member 22.

[0044] The waterproof structure 3 specifically includes a first filler 31 and a second filler 32. In this embodiment, the first filler 31 and the second filler 32 are respectively the first concrete layer and the second concrete layer. The first filler 31 is set on the peripheral wall of the sump 11, so that the first filler 31 can form a cushion layer of the sump 11 on the peripheral wall of the sump 11, thereby allowing workers to carry out construction on the cushion layer. The second filler 32 is set inside the sump 11, and when the second filler 32 is set inside the sump 11, the second filler 32 can wrap the switch 23. In this way, the second filler 32 can seal the conveyor 22 through the switch 23, thereby preventing the switch 23 from being exposed inside the sump 11 and leaking due to disrepair or other reasons, causing groundwater in the placement pit 12 to flow into the sump 11 through the conveyor 22 and the switch 23, thereby improving the waterproof effect of the sump 11.

[0045] Specifically, when the switch 23 is in the connected state, the second filler 32 flows into the conveyor 22 through the switch 23 and achieves the effect of sealing the conveyor 22. When the switch 23 is in the disconnected state, the second filler 32 can wrap the switch 23 to prevent the switch 23 from leaking under the influence of the external environment.

[0046] In summary, the extraction component 21 extracts groundwater from the placement pit 12 and the water seepage from the collection pit 11 into the placement pit 12, and the conveying component 22 transports the groundwater to the outside, thus ensuring that the environment inside the collection pit 11 is dry. The first filling component 31 can form a cushion layer for workers to construct in the collection pit 11, and the second filling component 32 can wrap the switch component 23 set on the conveying component 22 to seal the conveying component 22, preventing groundwater in the placement pit 12 from flowing into the collection pit 11 through the conveying component 22 and the switch component 23. This helps to improve the waterproof effect of the collection pit 11.

[0047] In one embodiment, such as Figures 1 to 3 As shown, when the first filler 31 is placed in the water collection pit 11, the conveyor 22 passes through the first filler 31; the waterproof structure 3 also includes a third filler 33 and a first waterproof component 34. The third filler 33 is placed between the conveyor 22 and the first filler 31 to fill the gap between the conveyor 22 and the first filler 31, and the first waterproof component 34 is placed on the third filler 33.

[0048] The waterproof structure 3 described above includes a third filler 33 and a first waterproof component 34. In this embodiment, the third filler 33 and the first waterproof component 34 are cement mortar and a waterproof additional layer. When the first filler 31 is placed in the sump 11, the conveying component 22 will pass through the first filler 31 and communicate with the outside. At this time, the third filler 33 is placed between the conveying component 22 and the first filler 31 to fill the gap between them. The second waterproof component 35 is placed on the third filler 33 to prevent groundwater from seeping through the third filler 33, thereby further improving the waterproof effect of the sump 11.

[0049] In one embodiment, such as Figure 2 and Figure 3 As shown, the waterproof structure 3 also includes a second waterproof component 35 and a sealing component 36. The second waterproof component 35 is laid on the outer surface of the first filler 31, avoiding the conveyor 22, and the sealing component 36 is disposed between the conveyor 22 and the second waterproof component 35.

[0050] The waterproof structure 3 described above further includes a second waterproof component 35 and a sealing component 36. In this embodiment, the second waterproof component 35 and the sealing component 36 are respectively a waterproof membrane and a sealant. The second waterproof component 35 is laid on the outer surface of the first filler 31, avoiding the conveyor 22, thus preventing groundwater from seeping through the first filler 31. The sealing component 36 is placed between the conveyor 22 and the second waterproof component 35, thereby sealing the gap between the conveyor 22 and the second waterproof component 35 and preventing groundwater from seeping through the gap.

[0051] In one embodiment, such as Figure 4 As shown, the extraction structure 2 also includes an installation component 24 and a filter component 25. The installation component 24 is disposed in the placement pit 12 and has an installation cavity with openings at both ends. The extraction component 21 is disposed in the installation cavity. The filter component 25 is disposed on the side of the installation component 24 away from the water collection pit 11 and covers an opening to be connected to the installation component 24.

[0052] The waterproof structure 3 described above, through the extraction structure 2, also includes an installation component 24 and a filter component 25. In this embodiment, the installation component 24 and the filter component 25 are respectively an installation steel pipe and a filter screen. The installation component 24 is set in the placement pit 12 and has an installation cavity with openings at both ends. The extraction component 21 is set in the installation cavity, thereby protecting the extraction component 21 through the installation component 24. The filter component 25 is set on the side of the installation component 24 away from the water collection pit 11, and the filter component 25 covers one of the openings of the installation component 24 and is connected to the installation component 24. In this way, the groundwater in the placement pit 12 can only flow into the installation cavity through the filter component 25 and be extracted by the extraction component 21 into the conveying component 22, which helps to avoid the situation where the extraction component 21 malfunctions due to excessive impurities in the groundwater.

[0053] In one embodiment, such as Figure 1 and Figure 4 As shown, the pit structure 1 also includes several laying components 13. All the laying components 13 are arranged in the placement pit 12 and are arranged around the mounting component 24. The filter component 25 is arranged between the mounting component 24 and some of the laying components 13.

[0054] The waterproof structure 3 described above, through the setting of the pit structure 1, also includes several laying components 13. In this embodiment, the laying components 13 are crushed stone. All the laying components 13 are set in the placement pit 12, and all the laying components 13 are set around the mounting component 24. The filter component 25 is set between the mounting component 24 and some of the laying components 13. In this way, the groundwater in the placement pit 12 flows into the installation cavity through the opening of the mounting component 24. The groundwater needs to be filtered by both the laying components 13 and the filter component 25. In this way, impurities in the groundwater can be further removed, which helps to further avoid the situation where the extraction component 21 malfunctions due to a large number of impurities in the groundwater.

[0055] In one embodiment, such as Figure 4 As shown, the mounting component 24 has several through-holes 241, any one of which connects the mounting cavity and the placement pit 12. The size of the through-hole 241 is smaller than the size of the laying component 13. Under the pressure of groundwater, groundwater is suitable to flow into the mounting cavity through the laying component 13 and the through-holes 241.

[0056] The waterproof structure 3 described above has several through-holes 241 on the mounting component 24. In this embodiment, the through-holes 241 are through holes. Each through-hole 241 can connect the mounting cavity and the placement pit 12. The size of each through-hole 241 is smaller than the size of the laying component 13, so that the laying component 13 will not enter the mounting cavity through the through-holes 241. In addition, under the pressure of groundwater, groundwater can flow into the mounting cavity through the laying component 13 and the through-holes 241, which helps to increase the flow rate of groundwater into the mounting cavity and thus avoids the extraction component 21 from spinning dry and being damaged.

[0057] In one embodiment, such as Figure 2 As shown, the extraction structure 2 also includes a support member 26, which is set at the opening of the placement pit 12 to support the first filling member 31 and isolate the water collection pit 11 and the placement pit 12. Under the pressure of groundwater, groundwater can penetrate the first filling member 31 and the support member 26, so that the water collection pit 11 flows into the placement pit 12.

[0058] The waterproof structure 3 described above also includes a support member 26 through the extraction structure 2. In this embodiment, the support member 26 is a supporting wooden board. The support member 26 is specifically set at the opening of the placement pit 12. Thus, when the first filler 31 is placed in the water collection pit 11, the support member 26 can provide support for the first filler 31, preventing the first filler 31 from falling into the placement pit 12 under the action of gravity and filling the placement pit 12, which would cause the placement pit 12 to fail.

[0059] In one embodiment, such as Figure 2 As shown, the extraction structure 2 also includes a water-stopping element 27, which is disposed on the conveying element 22 and located inside the first filling element 31. The water-stopping element 27 covers the opening of the placement pit 12 to isolate the groundwater on the side of the placement pit 12.

[0060] The waterproof structure 3 described above also includes a water-stopping element 27 through the extraction structure 2. In this embodiment, the water-stopping element 27 is a water-stopping steel plate. The water-stopping element 27 is specifically set on the conveying element 22 and located inside the first filling element 31. When the water-stopping element 27 is in place, it will cover the opening of the placement pit 12. In this way, when groundwater from the side of the placement pit 12 seeps into the collection pit 11, the water-stopping element 27 can block the groundwater and prevent it from seeping into the collection pit 11, which is beneficial to improving the waterproof effect of the collection pit 11.

[0061] In one embodiment, such as Figure 1 and Figure 2 As shown, when the second filler 32 is placed in the water collection pit 11, the second filler 32 covers the outer surface of the first filler 31 to compact the third filler 33, the first waterproof component 34, the second waterproof component 35 and the sealing component 36.

[0062] The waterproof structure 3 described above, by placing the second filler 32 in the water collection pit 11, allows the second filler 32 to cover the outer surface of the first filler 31, thereby enabling the second filler 32 to compact the third filler 33, the first waterproof component 34, the second waterproof component 35, and the sealing component 36 placed on the first filler 31 under its own gravity. Furthermore, the second filler 32 can also isolate the third filler 33, the first waterproof component 34, the second waterproof component 35, and the sealing component 36 from the outside world, preventing damage from the influence of the external environment.

[0063] In one embodiment, such as Figure 1 As shown, the second filler 32 has a clearance portion 321, which is adapted to accommodate an elevator.

[0064] The waterproof structure 3 described above has a clearance part 321 by providing a second filler 32. In this embodiment, the clearance part 321 is a clearance groove. The clearance part 321 can accommodate the elevator to ensure the normal operation of the elevator.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A waterproof structure, characterized in that, include: The pit structure (1) includes a water collection pit (11) and a placement pit (12) that are isolated from each other. The placement pit (12) is located on the side of the water collection pit (11) away from the ground. The volume of the water collection pit (11) is larger than the volume of the placement pit (12). The extraction structure (2) includes an extraction component (21), a conveying component (22), and a switching component (23). The extraction component (21) is disposed in the placement pit (12). One end of the conveying component (22) is connected to the output end of the extraction component (21), and the other end passes through the placement pit (12) and the water collection pit (11) to communicate with the outside. The switching component (23) is disposed on the conveying component (22) and located in the water collection pit (11). The switching component (23) has a communication state that connects the extraction component (21) to the outside and a disconnection state that isolates the extraction component (21) from the outside. Under the pressure of groundwater, groundwater is suitable to permeate from the water collection pit (11) into the placement pit (12). The extraction component (21) is suitable to extract groundwater to the outside through the conveying component (22). The waterproof structure (3) includes a first filler (31) and a second filler (32). The first filler (31) is disposed on the peripheral wall of the water collection pit (11) to form a cushion layer of the water collection pit (11). The second filler (32) is disposed in the water collection pit (11) and wraps the switch (23) to block the conveyor (22) through the switch (23).

2. The waterproof structure according to claim 1, characterized in that, When the first filling member (31) is placed in the water collection pit (11), the conveying member (22) passes through the first filling member (31); The waterproof structure (3) further includes a third filler (33) and a first waterproof component (34). The third filler (33) is disposed between the conveyor (22) and the first filler (31) to fill the gap between the conveyor (22) and the first filler (31). The first waterproof component (34) is disposed on the third filler (33).

3. The waterproof structure according to claim 2, characterized in that, The waterproof structure (3) further includes a second waterproof component (35) and a sealing component (36). The second waterproof component (35) is laid on the outer surface of the first filler (31) while avoiding the conveyor component (22). The sealing component (36) is disposed between the conveyor component (22) and the second waterproof component (35).

4. The waterproof structure according to any one of claims 1-3, characterized in that, The extraction structure (2) further includes an installation component (24) and a filter component (25). The installation component (24) is disposed in the placement pit (12). The installation component (24) has an installation cavity with openings at both ends. The extraction component (21) is disposed in the installation cavity. The filter component (25) is disposed on the side of the installation component (24) away from the water collection pit (11) and covers one of the openings and is connected to the installation component (24).

5. The waterproof structure according to claim 4, characterized in that, The pit structure (1) also includes several laying components (13), all of which are disposed in the placement pit (12) and on the periphery of the mounting component (24), and the filter component (25) is disposed between the mounting component (24) and some of the laying components (13).

6. The waterproof structure according to claim 5, characterized in that, The mounting component (24) has a plurality of through portions (241), any one of the through portions (241) connects the mounting cavity and the placement pit (12), and the size of the through portion (241) is smaller than the size of the laying component (13); under the pressure of groundwater, groundwater is suitable to flow into the mounting cavity through the laying component (13) and the through portion (241).

7. The waterproof structure according to claim 6, characterized in that, The extraction structure (2) further includes a support member (26), which is disposed at the opening of the placement pit (12) to support the first filling member (31) and isolate the water collection pit (11) and the placement pit (12). Under the pressure of groundwater, groundwater is suitable to permeate the first filling member (31) and the support member (26) so that the water collection pit (11) flows into the placement pit (12).

8. The waterproof structure according to claim 7, characterized in that, The extraction structure (2) further includes a water-stopping element (27), which is disposed on the conveying element (22) and located inside the first filling element (31). The water-stopping element (27) covers the opening of the placement pit (12) to isolate the groundwater on the side of the placement pit (12).

9. The waterproof structure according to claim 3, characterized in that, When the second filler (32) is placed in the water collection pit (11), the second filler (32) covers the outer surface of the first filler (31) to compact the third filler (33), the first waterproof component (34), the second waterproof component (35) and the seal (36).

10. The waterproof structure according to claim 9, characterized in that, The second filler (32) has a clearance portion (321) which is adapted to accommodate an elevator.

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