Underground drainage structure and construction method

Abstract

The invention provides an underground drainage structure and a construction method, and relates to the technical field of building drainage, the underground drainage structure comprises a plurality of water collection pits, a plurality of drainage pipes, a water guide mechanism and a water pumping mechanism; the water collecting pits are distributed in the same linear direction of the ground at equal intervals, the length direction of the drainage pipes is consistent with the distribution direction of the water collecting pits, the drainage pipes are all located under the ground, a plurality of water permeable holes are formed in the pipe walls of the drainage pipes, and a broken stone hardcore, a water filtering cloth layer and a concrete layer are sequentially arranged outside the drainage pipes. The multiple groups of water guide mechanisms are used for guiding water in the drainage pipe into the corresponding water collection pits from multiple positions; the water pumping mechanism comprises a water pump, a water pumping main pipe and a plurality of water pumping branch pipes, the water pumping main pipe is arranged in the distribution direction of the water collecting pits, one ends of the water pumping branch pipes communicate with the water pumping main pipe, and the other ends of the water pumping branch pipes stretch into the bottoms of the water collecting pits in a one-to-one correspondence mode. Underground water can be drained in time, and cracks caused by the fact that the ground is pressed and affected with damp due to the too high underground water level are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building drainage, in particular to an underground drainage structure and a construction method. BACKGROUND

[0002] The underground drainage system is an important part of urban infrastructure, mainly responsible for collecting, transporting and discharging urban surface and underground water, preventing waterlogging, protecting soil structure stability, maintaining ecological environment and ensuring the safe operation of the city. A well-designed and well-operated underground drainage system is crucial to the sustainable development of the city. The basement is usually located below the ground, which is easily affected by underground water level, rainwater backflow and internal water use. If the drainage is not smooth, it will cause water accumulation, dampness, structural damage and even property loss. Especially when the underground water level rises, it may cause pressure on the ground, and long-term soaking of the ground may cause cracks in the ground and seepage. SUMMARY

[0003] The purpose of the present application is to provide an underground drainage structure which can timely drain underground water and avoid cracks caused by high underground water level.

[0004] The present application is realized by the following technical scheme: an underground drainage structure, comprising: a plurality of water collection pits, a plurality of the water collection pits are distributed at equal intervals in the same straight line direction of the ground; a plurality of drainage pipes, the length direction of the plurality of drainage pipes is consistent with the distribution direction of the water collection pits, the bottom of the drainage pipe is provided with a mounting table, the drainage pipe is located below the ground, a plurality of water permeable holes are formed in the pipe wall of the drainage pipe, the outside of the drainage pipe is sequentially provided with a gravel cushion layer, a filter cloth layer and a concrete layer; a plurality of water guide mechanisms, the plurality of water guide mechanisms are used for guiding the water in the drainage pipe from a plurality of positions into the corresponding water collection pit, the water guide mechanism comprises a water guide pump, a water guide main pipe, a distribution pipe and a plurality of water guide branch pipes, the water guide pump is fixedly arranged on the side wall of the water collection pit, the water guide main pipe is located in the water collection pit, the distribution pipe is horizontally arranged at the bottom end of the water guide main pipe, a plurality of water guide branch pipes are vertically arranged on both sides of the distribution pipe, and the outlet end of the water guide pump is provided with a water outlet pipe; a water pumping mechanism, the water pumping mechanism comprises a water pumping pump, a water pumping main pipe and a plurality of water pumping branch pipes, the water pumping pump is arranged on one side of one of the water collection pits, the water pumping main pipe is arranged along the distribution direction of the water collection pit, and one end of the plurality of water pumping branch pipes is communicated with the water pumping main pipe and the other end penetrates into the bottom of the plurality of water collection pits one by one.

[0005] Further, the gravel cushion layer is arranged around the outside of the drainage pipe, the filter cloth layer is wrapped outside the gravel cushion layer, and the concrete layer is poured on the upper part of the filter cloth layer.

[0006] Further, the length direction of the mounting table is consistent with the length direction of the drain pipe, and a groove for placing the drain pipe is formed along the length direction of the mounting table.

[0007] Further, a plurality of pipe clamps for fixing the position of the drain pipe are distributed along the length direction of the mounting table.

[0008] Further, the water guide branch pipe comprises a main branch pipe and a branch pipe, one end of the main branch pipe is communicated and arranged on the water guide main pipe, the other end is communicated and arranged in the drain pipe close to the water collecting pit, and the branch pipe is communicated and arranged between two adjacent drain pipes.

[0009] Further, the main branch pipe and the branch pipe are provided with flexible extension sections at the ends away from the water collecting pit, the flexible extension sections are provided with gravity balls, and connecting rods are arranged between the gravity balls in the same group of flexible extension sections.

[0010] Further, the water outlet pipe of the water guide pump is directed to the bottom wall of the water collecting pit, a filter screen is arranged in the water collecting pit and at the lower part of the water outlet pipe, and the water pumping branch pipes all pass through the filter screen and extend into the water collecting pit.

[0011] Further, the filter screen is provided with a first mounting ring for the water guide main pipe to pass through and a second mounting ring for the water pumping branch pipes to pass through.

[0012] Further, the filter screen is arranged in an inclined manner, and the end of the filter screen close to the water guide main pipe is higher than the end of the filter screen away from the water guide main pipe.

[0013] The application also provides a construction method of the underground drainage structure, comprising the following steps:

[0014] S1, a groove for installing the drain pipe is formed on the ground, and a mounting table is prefabricated on the bottom wall of the groove;

[0015] S2, the drain pipe is installed on the mounting table, the position of the drain pipe is fixed, and then the water guide mechanism and the water pumping mechanism are installed;

[0016] S3, the gravel is poured into the groove, and the gravel forms a gravel cushion layer outside the drain pipe;

[0017] S4, a filter cloth layer is wrapped outside the gravel layer, and a concrete layer is poured on the upper part of the filter cloth layer.

[0018] The technical scheme of the application has at least the following advantages and beneficial effects:

[0019] 1. The application is characterized in that the drainage pipe is buried underground to collect underground water, the underground water is pumped to the water collecting pit by the water guide mechanism, and the underground water in the water collecting pit is pumped out and drained to the designated drainage ditch outside by the water pumping mechanism, so that the ground is not cracked due to high underground water level.

[0020] 2. The application is characterized in that the gravel cushion layer, the water filter cloth layer and the concrete layer are sequentially arranged outside the drainage pipe, the gravel cushion layer is arranged around the outside of the drainage pipe to protect the drainage pipe and intercept large-particle impurities, the water filter cloth layer is arranged outside the gravel cushion layer to intercept small-particle impurities, and the concrete layer is arranged on the upper part of the water filter cloth layer to improve the stability and reliability of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the application;

[0022] Figure 2 It is an enlarged view of A of Figure 1

[0023] Figure 3 It is a schematic diagram of the structure of the drainage pipe, the mounting table, the water guide mechanism and the water pumping mechanism of the application;

[0024] Figure 4 It is a schematic diagram of the structure of the water guide mechanism, the water pumping mechanism and the drainage pipe of the application;

[0025] Figure 5 It is a schematic diagram of the structure of the water guide mechanism and the multiple drainage pipes on one side of the water collecting pit of the application;

[0026] Figure 6 It is a schematic diagram of the structure of the water guide mechanism and the water pumping mechanism in the water collecting pit of the application;

[0027] Figure 7 It is a schematic diagram of the installation structure of the water guide main pipe and the water pumping branch pipe on the filter screen of the application;

[0028] The drawing label: 1 - water collecting pit, 11 - filter screen, 111 - first mounting ring, 112 - second mounting ring, 12 - communication pipe, 2 - drainage pipe, 201 - water permeable hole, 21 - gravel cushion layer, 22 - water filter cloth layer, 23 - concrete layer, 3 - mounting table, 31 - groove, 32 - pipe clamp, 4 - water guide mechanism, 41 - water guide pump, 411 - water outlet pipe, 42 - water guide main pipe, 43 - distribution pipe, 44 - water guide branch pipe, 441 - main branch pipe, 442 - branch pipe, 443 - flexible extension section, 444 - gravity ball, 4441 - connecting rod, 5 - water pumping mechanism, 51 - water pumping pump, 52 - water pumping main pipe, 53 - water pumping branch pipe.​ DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] EMBODIMENT

[0032] The following refers to Figures 1-7 As shown, further illustrated in conjunction with the specific embodiments, the present embodiment provides an underground drainage structure, which comprises a plurality of water collecting pits 1, a plurality of drainage pipes 2, a plurality of water guiding mechanisms 4 and a set of water pumping mechanisms 5. The plurality of water collecting pits 1 are distributed at equal intervals in the same linear direction on the ground, for temporarily storing underground water. The length direction of the drainage pipe 2 is consistent with the distribution direction of the water collecting pit 1. The plurality of drainage pipes 2 are parallel to each other and uniformly distributed below the ground. A plurality of water permeable holes 201 are formed on the pipe wall of each drainage pipe 2, so that the underground water can enter the inside of the drainage pipe 2 from the water permeable holes 201. The bottom of the drainage pipe 2 is provided with a mounting table 3, so as to improve the stability of the drainage pipe 2 after installation. The outside of the drainage pipe 2 is sequentially provided with a gravel cushion layer 21, a water filtering cloth layer 22 and a concrete layer 23. The drainage pipe 2 is provided with a protective function, and can also intercept impurities and silt in the underground water. The plurality of water guiding mechanisms 4 are used to guide the underground water entering the drainage pipe 2 from a plurality of positions into the corresponding water collecting pit 1. The water pumping mechanism 5 is used to pump out the underground water flowing into the water collecting pit 1 and drain it into the designated drainage ditch outside, so as to facilitate the drainage of the underground water.

[0033] Referring to Figure 3 , Figure 4As shown, the length direction of the mounting table 3 is consistent with the length direction of the drain pipe 2, and the mounting table 3 is provided with a groove 31 along the length direction of the mounting table 3 for placing the drain pipe 2, and a plurality of pipe clamps 32 for fixing the position of the drain pipe 2 are distributed along the length direction of the mounting table 3. Before installing the drain pipe 2, first, a trench of a specified depth is dug on the ground to facilitate the installation of the drain pipe 2 to a specified depth below the ground surface, then the trench bottom wall is poured or a prefabricated mounting table 3 is used, and the pipe clamps 32 are prefabricated on the mounting table 3. After the drain pipe 2 is placed in the groove 31 on the mounting table 3, the position of the drain pipe 2 is fixed by the plurality of pipe clamps 32, and then the gravel cushion layer 21, the filter cloth layer 22 and the concrete layer 23 are arranged outside the drain pipe 2.

[0034] Referring to Figure 1 , Figure 2 As shown, the gravel cushion layer 21 is arranged around the outside of the drain pipe 2, which plays a protective role for the drain pipe 2 and can also intercept large-particle impurities; the filter cloth layer 22 is wrapped outside the gravel cushion layer 21 to facilitate the interception of small-particle impurities; and the concrete layer 23 is poured on the upper part of the filter cloth layer 22 to improve the stability and reliability of the overall structure.

[0035] Referring to Figure 4 , Figure 5 As shown, the water guide mechanism 4 includes a water guide pump 41, a water guide main pipe 42, a distribution pipe 43 and a plurality of water guide branch pipes 44. The water guide pump 41 is installed on the side wall of the water sump 1, the water guide main pipe 42 is located in the water sump 1, the distribution pipe 43 is horizontally arranged at the bottom end of the water guide main pipe 42, a plurality of water guide branch pipes 44 are vertically arranged on both sides of the distribution pipe 43, and the outlet end of the water guide pump 41 is provided with a water outlet pipe 411. When the water guide pump 41 is started, the plurality of water guide branch pipes 44 can suck the underground water entering the drain pipe 2, the underground water enters the water guide main pipe 42 after passing through the distribution pipe 43, and finally is discharged into the water sump 1 by the water outlet pipe 411 of the water guide pump 41. The water sump 1 can temporarily store the underground water. It should be noted that the water guide main pipe 42 is provided with a pressure sensor, which can detect the possibility of causing pressure to the ground when the water level in the drain pipe 2 rises to a specified value. Therefore, when the pressure sensor detects that the water pressure in the water guide main pipe 42 reaches the warning value, the water guide pump 41 is automatically started to suck the underground water in the drain pipe 2, so as to avoid the high underground water level from causing pressure to the ground.

[0036] Referring to Figure 4 , Figure 5As shown, the water guide branch pipe 44 includes a main branch pipe 441 and a branch pipe 442, one end of the main branch pipe 441 is communicatedly arranged on the water guide main pipe 42, and the other end is communicatedly arranged in the drainage pipe 2 close to the water collecting pit 1; the branch pipe 442 is communicatedly arranged between two adjacent drainage pipes 2. When the underground water in the drainage pipe 2 is pumped by the water guide pump 41, the main branch pipe 441 can immediately pump the underground water in the drainage pipe 2 close to the water collecting pit 1, and when the underground water level in the drainage pipe 2 close to the water collecting pit 1 decreases during the pumping process, the branch pipe 442 can guide the underground water in the drainage pipe 2 away from the water collecting pit 1 to the drainage pipe 2 close to the water collecting pit 1, so that the underground water collected in all the drainage pipes 2 can be finally pumped into the water collecting pit 1 for collection.

[0037] Referring to Figure 4 As shown, one end of the main branch pipe 441 and the branch pipe 442 away from the water collecting pit 1 is provided with a flexible extension section 443, and the flexible extension section 443 is provided with a gravity ball 444, and the gravity balls 444 in the same group of flexible extension sections 443 are provided with a connecting rod 4441. By arranging the flexible extension section 443 on the main branch pipe 441 and the branch pipe 442, the change of the water level in the drainage pipe 2 is adapted, and the gravity ball 444 is arranged at the end of the flexible extension section 443, so that the gravity ball 444 is always attached to the inner wall of the drainage pipe 2, so that the direction of the end of the flexible extension section 443 cannot be directed to the inner wall of the drainage pipe 2, so as to avoid the blockage of the inlet end of the flexible extension section 443.

[0038] Referring to Figure 4 , Figure 6 As shown, the water pumping mechanism 5 includes a water pumping pump 51, a water pumping main pipe 52 and a plurality of water pumping branch pipes 53, the water pumping pump 51 is arranged on one side of one of the water collecting pits 1, the water pumping main pipe 52 is arranged along the distribution direction of the water collecting pit 1, and one end of the plurality of water pumping branch pipes 53 is communicatedly arranged on the water pumping main pipe 52, and the other end is correspondingly inserted into the bottom of the plurality of water collecting pits 1. By starting the water pumping pump 51, the plurality of water pumping branch pipes 53 can simultaneously pump the underground water in the plurality of water collecting pits 1 through the water pumping main pipe 52, so as to conveniently discharge the underground water in the water collecting pit 1 to the external designated drainage ditch. The communication pipe 12 is communicatedly arranged between the adjacent two water collecting pits 1, when the water level of the underground water in the plurality of water collecting pits 1 has a height difference, the underground water in the water collecting pit 1 with higher water level will flow into the water collecting pit 1 with lower water level through the communication pipe 12, so as to ensure the synchronism of the water pumping process to a certain extent, avoid that the water level in part of the water collecting pits 1 is first pumped out to cause the water pumping branch pipe 53 at the corresponding position to stop working first, and affect the efficiency of the whole water pumping process.

[0039] Referring to Figure 6 , Figure 7As shown, the water outlet pipe 411 of the water guide pump 41 is directed towards the bottom wall of the sump 1, and a filter screen 11 is arranged in the sump 1 and at the lower part of the water outlet pipe 411, so as to retain the impurities contained in the underground water, the filter screen 11 is arranged obliquely, and the end of the filter screen 11 close to the water guide main pipe 42 is higher than the end of the filter screen 11 away from the water guide main pipe 42, so that the underground water can flow on the filter screen 11, and when part of the filter screen holes on the filter screen 11 are blocked, the underground water can pass through other positions and enter the sump 1. The filter screen 11 is provided with a first mounting ring 111 for the water guide main pipe 42 to pass through and a second mounting ring 112 for the water pumping branch pipe 53 to pass through, and the water guide main pipe 42 passes through the first mounting ring 111 on the filter screen 11 and extends into the sump 1, and the water pumping branch pipe 53 passes through the second mounting ring 112 on the filter screen 11 and extends into the sump 1.

[0040] The embodiment also provides a construction method of the underground drainage structure, comprising the following steps:

[0041] S1, a trench for installing the drainage pipe 2 is formed on the ground, and an installation table 3 is prefabricated on the bottom wall of the trench;

[0042] S2, the drainage pipe 2 is installed on the installation table 3, and the position of the drainage pipe 2 is fixed, then the water guide mechanism 4 and the water pumping mechanism 5 are installed;

[0043] S3, the gravel is poured into the trench, so that the gravel forms a gravel cushion layer 21 outside the drainage pipe 2;

[0044] S4, the filter cloth layer 22 is wrapped outside the gravel layer, and the concrete layer 23 is poured on the upper part of the filter cloth layer 22.

[0045] The above is only the preferred embodiment of the present application and is not used to limit the present application, and for those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An underground drainage structure, characterized in that: include: A plurality of water collection pits (1), wherein the plurality of water collection pits (1) are distributed at equal intervals in the same straight line direction on the ground; A plurality of drainage pipes (2), wherein the length direction of the plurality of drainage pipes (2) is consistent with the distribution direction of the sump (1), a mounting platform (3) is provided at the bottom of the drainage pipes (2), the drainage pipes (2) are all located below the ground, a plurality of water-permeable holes (201) are opened on the pipe wall of the drainage pipes (2), and a crushed stone cushion layer (21), a water filter cloth layer (22) and a concrete layer (23) are sequentially provided on the outside of the drainage pipes (2); Multiple groups of water guide mechanisms (4), the multiple groups of water guide mechanisms (4) are used to guide water in the drainage pipe (2) from multiple positions into the corresponding sump (1), the water guide mechanisms (4) include a water guide pump (41), a water guide main pipe (42), a distribution pipe (43) and multiple groups of water guide branch pipes (44), the water guide pump (41) is fixedly arranged on the side wall of the sump (1), the water guide main pipe (42) is located in the sump (1), the distribution pipe (43) is horizontally arranged at the bottom end of the water guide main pipe (42), and multiple groups of water guide branch pipes (44) are vertically arranged on both sides of the distribution pipe (43), and the outlet end of the water guide pump (41) is provided with a water outlet pipe (411); A water pumping mechanism (5) includes a water pump (51), a water pumping main pipe (52), and a plurality of water pumping branch pipes (53). The water pump (51) is arranged on one side of one of the sumps (1). The water pumping main pipe (52) is arranged along the distribution direction of the sump (1). One end of each of the plurality of water pumping branch pipes (53) is connected to the water pumping main pipe (52), and the other end thereof extends into the bottom of the plurality of sumps (1) in a one-to-one correspondence.

2. The underground drainage structure according to claim 1, characterized in that: The crushed stone cushion layer (21) is arranged around the outside of the drainage pipe (2), the water filter cloth layer (22) is coated on the outside of the crushed stone cushion layer (21), and the concrete layer (23) is poured on the upper part of the water filter cloth layer (22).

3. The underground drainage structure according to claim 1, characterized in that: The length direction of the mounting platform (3) is consistent with the length direction of the drainage pipe (2), and a groove (31) for placing the drainage pipe (2) is provided on the mounting platform (3) along its own length direction.

4. The underground drainage structure according to claim 3, characterized in that: A plurality of pipe clamps (32) for fixing the position of the drainage pipe (2) are distributed on the mounting platform (3) along its length direction.

5. The underground drainage structure according to claim 1, characterized in that: The water branch pipe (44) comprises a main branch pipe (441) and a branch pipe (442); one end of the main branch pipe (441) is connected to the water main pipe (42), and the other end is connected to the drainage pipe (2) near the sump (1); the branch pipe (442) is connected between two adjacent drainage pipes (2).

6. The underground drainage structure according to claim 5, characterized in that: The ends of the main branch pipe (441) and the branch pipe (442) away from the sump (1) are both provided with flexible extension sections (443), and the flexible extension sections (443) are both provided with gravity balls (444). Connecting rods (4441) are provided between the gravity balls (444) located in the same group of flexible extension sections (443).

7. The underground drainage structure according to claim 1, characterized in that: The outlet pipe (411) of the water guide pump (41) faces the bottom wall of the sump (1); a filter screen (11) is provided in the sump (1) and below the outlet pipe (411); and the water extraction branch pipes (53) all pass through the filter screen (11) and extend into the sump (1).

8. The underground drainage structure according to claim 7, characterized in that: The filter screen plate (11) is provided with a first mounting ring (111) for the water guide pipe (42) to pass through and a second mounting ring (112) for the water extraction branch pipe (53) to pass through.

9. The underground drainage structure according to claim 7, characterized in that: The filter screen plate (11) is arranged at an angle, and one end of the filter screen plate (11) close to the water guide pipe (42) is higher than the other end of the filter screen plate (11) away from the water guide pipe (42).

10. The construction method of the underground drainage structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. A trench for installing a water supply and drainage pipe (2) is opened on the ground, and a mounting platform (3) is prefabricated on the bottom wall of the trench; S2, installing the drain pipe (2) on the mounting platform (3), fixing the position of the drain pipe (2), and then installing the water guide mechanism (4) and the water pumping mechanism (5); S3, pouring gravel into the trench so that the gravel forms a gravel cushion layer (21) outside the drainage pipe (2); S4. Wrap a water filter cloth layer (22) on the outside of the gravel layer, and pour a concrete layer (23) on the upper part of the water filter cloth layer (22).

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