Football field underground foundation pit drainage system and construction method

Abstract

The invention relates to the field of football field construction, and provides a football field underground foundation pit drainage system and a construction method.The football field underground foundation pit drainage system comprises a fence assembly, a water collecting tank, a plurality of anchoring parts and flow guiding parts, the fence assembly comprises side wall fence parts arranged on the side wall of a foundation pit, and water seepage holes are formed in the side wall fence parts; the water collecting tank is arranged on the bottom surface of the foundation pit; the anchoring part is used for connecting the fence assembly and the foundation pit, and the anchoring part is a first water collecting pipe; the top of the first water collecting pipe penetrates through the water seepage hole, and a first water collecting hole is formed in the top of the first water collecting pipe; and the flow guide piece is tightly attached to the upper half area of the first water collecting pipe and the side wall enclosure piece. The foundation pit mechanism is reinforced through the fence assembly, water in soil around the foundation pit is guided to the water seepage holes and the first water collecting holes through the flow guide pieces, and therefore the water in the soil can flow into the water collecting grooves, and the problem that the drainage effect is poor is solved.

Description

Technical Field

[0001] The present application relates to the field of football field construction, and in particular to an underground foundation pit drainage system and a construction method for a football field. Background Art

[0002] An underground foundation pit is a soil pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. It is mainly used for civil engineering and geotechnical engineering operations such as piers, bridge abutments and expanded foundation construction.

[0003] Rainwater and groundwater are easily accumulated in foundation pits. The accumulated water will not only affect the normal construction of the project, but also erode the soil structure around the foundation pit, which may cause damage to the foundation pit structure.

[0004] At present, drainage is usually carried out by building sump and wells at the bottom of the foundation pit to collect the accumulated water, and then using water pumps to pump out the accumulated water in the sump and wells. However, the above method can only clean up the accumulated water at the bottom of the foundation pit, and the drainage effect is poor, making it difficult to effectively maintain the foundation pit structure and ensure the smooth progress of the construction process. Summary of the invention

[0005] In order to solve the problem of poor drainage effect, the present application provides an underground foundation pit drainage system and a construction method for a football field.

[0006] In a first aspect, the present application provides an underground foundation pit drainage system for a football field, comprising: The enclosure assembly comprises a side wall enclosure member, wherein the side wall enclosure member is arranged on the side wall of the foundation pit and the side wall enclosure member is provided with a water seepage hole.

[0007] A water collecting trough is arranged on the bottom surface of the foundation pit, and the water collecting trough is arranged adjacent to the side wall enclosure.

[0008] A plurality of anchors are used to connect the enclosure assembly to the foundation pit, and at least one of the anchors is a first water collecting pipe.

[0009] The first water collecting pipe is arranged obliquely and passes through the side wall enclosure, the top of the first water collecting pipe passes through the water seepage hole, and the top of the first water collecting pipe is provided with a first water collecting hole.

[0010] The lower end of the first water collecting pipe is open and located above the water collecting tank, and the higher end of the first water collecting pipe is inserted into the side wall of the foundation pit.

[0011] The flow guide is arranged inside the side wall of the foundation pit, the bottom of the flow guide is tightly attached to the upper half of the first water collecting pipe, and the side wall of the flow guide is tightly attached to the side wall enclosure.

[0012] By adopting the above solution, water in a large area of ​​soil around the foundation pit can be quickly drained.

[0013] Optionally, the guide member includes two guide plates, the bottoms of the two guide plates are close to each other and are both in contact with the first water collecting pipe, and the tops of the two guide plates are far away from each other.

[0014] By adopting the above solution, the guide plate can guide and converge water in a larger soil range.

[0015] Optionally, there are at least two first water collecting pipes of different heights, and the depth to which the lower first water collecting pipe is inserted into the side wall of the foundation pit is greater than the depth to which the higher first water collecting pipe is inserted into the side wall of the foundation pit.

[0016] By adopting the above solution, the flow in the soil around the foundation pit can be diverted so that the first water collecting pipes at different heights can collect moisture in the soil.

[0017] Optionally, there are multiple side wall enclosures, and the multiple side wall enclosures are arranged one-to-one on multiple side walls of the foundation pit.

[0018] The enclosure assembly also includes a horizontal enclosure member, and the tops of the plurality of side wall enclosure members are all connected to the horizontal enclosure member.

[0019] The adoption of the above solution helps to maintain the regularity of the foundation pit structure and reduce the difficulty of assembling the enclosure components.

[0020] Optionally, the underground foundation pit drainage system of the football field further includes a cover plate, which is used to cover the top of the sump.

[0021] By adopting the above solution, foreign matter can be prevented from entering the water collection tank.

[0022] Optionally, the cover plate is rotatably connected to the side wall of the sump, and the cover plate is a filter plate.

[0023] By adopting the above solution, water droplets can pass through the cover plate and enter the water collecting tank, and the cover plate is relatively convenient to open.

[0024] Optionally, the underground foundation pit drainage system of the football field also includes a sump, a filter cloth and fixings.

[0025] The water collecting well is arranged at the bottom of the water collecting tank and is communicated with the water collecting tank.

[0026] The fixing member is arranged at the junction of the water collecting tank and the water collecting well, and the fixing member is detachably connected to the water collecting tank.

[0027] The filter cloth is laid on the bottom wall of the water collecting tank, and the filter cloth is connected to the fixing member and covers the fixing member.

[0028] By adopting the above solution, the accumulated water in the water collection tank can be filtered to prevent foreign matter from entering the water collection well.

[0029] Optionally, the underground foundation pit drainage system of the football field also includes water blocking components.

[0030] The fixing member is provided with a mounting portion, and the water blocking member is detachably arranged on the mounting portion, thereby blocking the communication between the water collecting trough and the water collecting well.

[0031] By adopting the above solution, the connection between the water collection tank and the water collection well can be blocked at any time to facilitate cleaning of the water collection well.

[0032] Optionally, the underground foundation pit drainage system of the football field also includes an aquifer and a second water collecting pipe.

[0033] The water storage layer is laid on the bottom wall of the foundation pit.

[0034] A second water collecting hole is provided on the top of the second water collecting pipe. The second water collecting pipe is arranged inside or below the aquifer. The second water collecting pipe is communicated with the water collecting tank.

[0035] By adopting the above solution, the aquifer can temporarily store the water at the bottom of the foundation pit, and collect and transport it to the water collection tank through the second water collecting pipe.

[0036] In a second aspect, the present application also provides a construction method for an underground foundation pit drainage system for a football field, comprising the following steps: Dig a foundation pit, and then connect the diversion piece to the enclosure assembly; Marking the preset installation position of the enclosure assembly, and constructing a water collection tank according to the preset installation position of the enclosure assembly; The enclosure assembly is connected to the foundation pit through anchoring pieces, and the guide piece is buried in the side wall of the foundation pit.

[0037] The present application reinforces the foundation pit structure through the enclosure assembly, which can prevent foreign objects such as soil blocks from falling into the foundation pit and causing safety accidents or increasing the turbidity of the accumulated water in the foundation pit; it also guides the moisture in the soil around the foundation pit to the seepage holes and the first water collection holes through the guide members, so that the moisture in the soil can flow into the water collection trough and finally be pumped away, solving the problem of poor drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a cross-sectional view of an embodiment of an underground foundation pit drainage system for a football field provided in the present application.

[0039] Figure 2 It is a schematic diagram of the guide member and the first water collecting pipe of the underground foundation pit drainage system of the football field provided by the present application.

[0040] Figure 3 It is a top view of the underground foundation pit drainage system of the football field provided by this application.

[0041] Figure 4 It is a partial top view of the underground foundation pit drainage system of a football field provided in this application.

[0042] Figure 5 It is a cross-sectional view of another embodiment of the underground foundation pit drainage system for a football field provided in the present application.

[0043] Description of reference numerals: 1. enclosure assembly; 11. horizontal enclosure member; 12. side wall enclosure member; 121. water seepage hole; 2. water collecting tank; 21. recessed portion; 3. Anchor; 31. First water collecting pipe; 311. First water collecting hole; 4. Flow guide; 5. Water collection well; 6. Cover plate; 7. Filter cloth; 8. Fixing parts; 9. Second water collection pipe; 10. Spare pumping pipe; 200. Foundation pit; 300. Aquifer. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-5 This application is described in further detail.

[0045] like Figure 1 , Figure 2 and Figure 4 As shown, an embodiment of the present application discloses an underground foundation pit drainage system for a football field, comprising: a enclosure assembly 1, a sump 2, a plurality of anchors 3, a guide member 4, a sump 5 and a pumping assembly.

[0046] The enclosure assembly 1 includes a horizontal enclosure 11 and a side wall enclosure 12. The horizontal enclosure 11 is arranged on the ground around the foundation pit 200; the side wall enclosure 12 is arranged on the side wall of the foundation pit 200, and the top of the side wall enclosure 12 is connected to the horizontal enclosure 11. The horizontal enclosure 11 and the side wall enclosure 12 are both connected to the land around the foundation pit 200 through the anchor 3. The horizontal enclosure 11 and the side wall enclosure 12 can prevent foreign objects such as soil blocks around the foundation pit 200 from falling into the foundation pit 200, and can also make the shape of the foundation pit 200 more regular.

[0047] The water collection tank 2 is arranged on the bottom surface of the foundation pit 200, and the water collection tank 2 is arranged adjacent to the side wall enclosure 12. Taking the foundation pit 200 with a rectangular cross section as an example, the number of the side wall enclosure 12 is four, and the four side wall enclosures 12 are connected to the four inner side walls of the foundation pit 200 in a one-to-one correspondence. The water collection tank 2 can be a rectangular ring structure, so that for any side wall enclosure 12, the water collection tank 2 has a side adjacent to and parallel to it.

[0048] The side wall enclosure 12 is provided with a plurality of seepage holes 121 , and the moisture in the soil around the foundation pit 200 can enter the inner side of the side wall enclosure 12 through the seepage holes 121 , and flow downward along the side wall enclosure 12 into the water collecting tank 2 .

[0049] The arrangement directions of the plurality of anchors 3 are allowed to be different, thereby increasing the anchoring strength.

[0050] Among the multiple anchors 3, some of the anchors 3 are first water collecting pipes 31, which are inclined, with the higher end of the first water collecting pipe 31 penetrating the side wall enclosure 12 and inserted into the soil of the side wall of the foundation pit 200, and the lower end of the first water collecting pipe 31 being located above the water collecting tank 2. A first water collecting hole 311 is provided at the top of the first water collecting pipe 31, and the lower end of the first water collecting pipe 31 is open. The moisture in the soil of the side wall of the foundation pit 200 can enter the first water collecting pipe 31 through the first water collecting hole 311, and be discharged into the water collecting tank 2 along the first water collecting pipe 31 for collection.

[0051] The higher end of the first water collecting pipe 31 is closed to prevent soil from entering the first water collecting pipe 31. The higher end of the first water collecting pipe 31 can be a sharp structure such as a cone to facilitate the insertion of the first water collecting pipe 31 into the soil.

[0052] The first water collecting pipe 31 may be optionally arranged below the seepage hole 121. For example, a through hole is provided on the side wall enclosure 12 for inserting the first water collecting pipe 31, and the top of the through hole is connected to the bottom of the seepage hole 121, so that the top of the first water collecting pipe 31 can pass through the seepage hole 121. The guide member 4 is arranged in the soil inside the side wall of the foundation pit 200, and the guide member 4 can be connected to the first water collecting pipe 31 or the side wall enclosure 12. The water in the surrounding soil is guided by the guide member 4 and gathered around the seepage hole 121 and the first water collecting hole 311. The gathered water can pass downward through the first water collecting hole 311, or pass horizontally through the seepage hole 121, so that the water in the soil around the foundation pit 200 can be collected in a larger range and with higher efficiency.

[0053] Furthermore, the bottom of the guide member 4 is tightly attached to or connected to the upper half of the first water collecting pipe 31, and its side wall is tightly attached to or connected to the side wall enclosure 12, so that the guide member 4 can not only guide the moisture, but also keep the moisture around the seepage hole 121 and the first water collecting hole 311, so that the moisture has sufficient time to pass through the seepage hole 121 or the first water collecting hole 311.

[0054] The water collecting well 5 is arranged at the bottom of the water collecting tank 2 and is communicated with the water collecting tank 2, and the water collected in the water collecting tank 2 can flow into the water collecting well 5. The bottom wall of the water collecting tank 2 can be set with a certain slope to ensure that the water in the water collecting tank 2 can flow into the water collecting well 5 for collection.

[0055] The number of the water collection wells 5 can be one or more. Taking the foundation pit 200 with a rectangular cross section as an example, the number of the water collection wells 5 can be four, which are respectively arranged at the four corners of the foundation pit 200.

[0056] The pumping assembly is used to pump water out of the water collection well 5 to complete the drainage process of the foundation pit 200. The pumping assembly may include a water pump and a pumping pipe. The pumping process is conventional technology and will not be described in detail.

[0057] The embodiment of the present application reinforces the foundation pit 200 structure through the enclosure component 1, which can prevent foreign objects such as soil blocks from falling into the foundation pit 200 and causing safety accidents or increasing the turbidity of the accumulated water in the foundation pit 200; it also guides the moisture in the soil around the foundation pit 200 to the seepage holes 121 and the first water collection holes 311 through the guide member 4, so that the moisture in the soil can flow into the water collection tank 2 and finally be pumped away, solving the problem of poor drainage effect.

[0058] In some embodiments, a filter is provided on the side of the side wall enclosure 12 facing the side wall of the foundation pit 200, and the filter covers the seepage hole 121 to prevent soil and silt from passing through the seepage hole 121, thereby preventing the pumping assembly from being damaged due to a large amount of impurities in the water when pumping water. Similarly, a filter is also provided on the first water collecting pipe 31 to prevent soil or silt from passing through the first water collecting hole 311. The filter can be a geotextile.

[0059] like Figure 1 to Figure 2 As shown, in some embodiments, the guide member 4 includes two guide plates, the bottoms of the two guide plates are close to each other and both are attached to the first water collecting pipe 31, and the tops of the two guide plates are far away from each other, so as to gather water in a larger range. The guide plate can be connected to the side wall enclosure 12. The first water collecting pipe 31 is provided with a strip slot along its own axis. When the first water collecting pipe 31 is inserted into the through hole reserved on the side wall enclosure 12, the guide plate can be inserted into the strip slot, so that the guide plate can play a certain guiding role on the first water collecting pipe 31, and can also prevent the water gathered by the guide plate from flowing away between the guide plate and the first water collecting pipe 31.

[0060] like Figure 1 As shown, in some embodiments, there are at least two first water collecting pipes 31 of different heights, and the depth of the first water collecting pipe 31 with a lower height inserted into the side wall of the foundation pit 200 is greater than the depth of the first water collecting pipe 31 with a higher height inserted into the side wall of the foundation pit 200. In contrast, the lengths of different guide members 4 are allowed to be different, so that the depths of different guide members 4 inserted into the side wall of the foundation pit 200 are allowed to be different.

[0061] The insertion depth of the guide member 4 matched with the first water collecting pipe 31 with a lower height is greater than the insertion depth of the guide member 4 matched with the first water collecting pipe 31 with a higher height. Therefore, when the water in the side wall of the foundation pit 200 is not captured by the guide member 4 and the first water collecting pipe 31 with a higher height, the water can also be captured by the guide member 4 and the first water collecting pipe 31 with a lower height. Then, the water in the soil around the foundation pit 200 is reasonably diverted to ensure that as much water as possible is discharged.

[0062] In some embodiments, there are multiple side wall enclosures 12, and the multiple side wall enclosures 12 are arranged one by one on the multiple side walls of the foundation pit 200. There is one horizontal enclosure 11, which is annular, and the tops of the multiple side wall enclosures 12 are connected to the horizontal enclosure 11. The above arrangement makes the assembly of the enclosure assembly 1 simpler, and the assembled enclosure assembly 1 is more regular.

[0063] like Figure 1 and Figure 3 As shown, in some embodiments, the underground foundation pit drainage system of the football field further includes a cover plate 6, which is used to cover the top of the sump 2.

[0064] Specifically, the cover plate 6 may be a grid plate or a filter plate with filter holes, so that the cover plate 6 can allow water to pass through while filtering some large foreign matter. Alternatively, the cover plate 6 may also be a solid plate without filter structures such as filter holes, so as to further prevent foreign matter from entering the water collection tank 2. When the cover plate 6 has no filter structure, a guide groove may be provided on the side wall enclosure 12, and the bottom of the guide groove is connected to the water collection tank 2, so that when the cover plate 6 is replaced on the water collection tank 2, the water flowing out of the seepage hole 121 and the first water collection pipe 31 can flow into the water collection tank 2 through the guide groove.

[0065] Furthermore, the cover plate 6 can be rotatably connected to the top of the side wall of the water collecting tank 2, and a handle is provided on the cover plate 6. By pulling the handle, the cover plate 6 can be flipped open to check the situation in the water collecting tank 2. In addition, when the cover plate 6 is flipped open, various foreign objects such as soil blocks on the cover plate 6 can be separated from the cover plate 6 to avoid affecting the accumulation of water passing through the cover plate 6 and entering the water collecting tank 2.

[0066] In addition, a protective plate may also be provided above the water collecting well 5 to prevent foreign matter from entering the water collecting well 5. A through hole for the water pumping pipe to penetrate is reserved on the protective plate.

[0067] like Figure 1 and Figure 4As shown, in some embodiments, the underground foundation pit drainage system of a football field also includes a filter cloth 7 and a fixing member 8; the fixing member 8 is arranged at the junction of the sump 2 and the sump 5, and the fixing member 8 is detachably connected to the sump 2; the filter cloth 7 is laid on the bottom wall of the sump 2, and the filter cloth 7 is connected to the fixing member 8 and covers the fixing member 8.

[0068] Specifically, the fixing member 8 can be a frame structure, which is convenient for the water in the water collecting tank 2 to pass through. A slot is provided on the side wall of the water collecting tank 2, and the fixing member 8 can be inserted into the slot, so that the fixing member 8 is fixed in the water collecting tank 2.

[0069] Taking the foundation pit 200 with a rectangular cross section as an example, a water collection well 5 is provided at each of the four corners of the foundation pit 200. A filter cloth 7 is provided between two adjacent water collection wells 5, and a fixing member 8 is connected to each of the two ends of the filter cloth 7. The ends of the filter cloth 7 are tilted upward and wrapped around the fixing member 8, so that the accumulated water in the water collection tank 2 can be filtered by the filter cloth 7 when it flows into the water collection well 5. Foreign matter filtered by the filter cloth 7 remains on the filter cloth 7. When cleaning is required, only the fixing member 8 needs to be taken out, and the filter cloth 7 can be taken out together. After cleaning, the fixing member 8 is reinserted into the slot, and the filter cloth 7 can be laid in the water collection tank 2 again.

[0070] like Figure 1 As shown, further, the water collecting trough 2 is provided with recessed portions 21 on the side walls on both sides thereof along its width direction, and the edges on both sides thereof along its width direction are respectively located in the corresponding recessed portions 21, so that the water flow entering the water collecting trough 2 will inevitably fall on the top of the filter cloth 7, and will not directly enter the gap between the filter cloth 7 and the water collecting trough 2.

[0071] In some embodiments, the football field underground foundation pit drainage system further includes a water blocking member. The fixing member 8 has a mounting portion, and the water blocking member is detachably arranged on the mounting portion, thereby blocking the communication between the water collecting trough 2 and the water collecting well 5.

[0072] Specifically, the mounting portion may be a slot, and the water blocking member may be arranged in the slot to block the connection between the water collecting tank 2 and the water collecting well 5, thereby preventing accumulated water from entering the water collecting well 5 when cleaning the water collecting well 5.

[0073] like Figure 1 and Figure 3 As shown, in some embodiments, the underground foundation pit drainage system of the football field further includes an aquifer 300 and a second water collecting pipe 9. The aquifer 300 is laid on the bottom wall of the foundation pit 200. The aquifer 300 can be paved with crushed stones and can be used to temporarily store underground seepage water and water accumulated at the bottom of the foundation pit 200, so that there is no visible water at the bottom of the foundation pit 200, ensuring the smooth progress of the construction process.

[0074] A second water collecting hole is provided at the top of the second water collecting pipe 9, and the second water collecting pipe 9 is provided inside or below the aquifer 300, and water in the aquifer 300 can enter the second water collecting pipe 9 through the second water collecting hole. The second water collecting pipe 9 is connected to the water collecting tank 2 so as to guide water into the water collecting tank 2.

[0075] like Figure 4 and Figure 5 As shown, in some embodiments, the football field underground foundation pit drainage system further includes a spare pumping pipe 10. The spare pumping pipe 10 is pre-buried in the soil around the foundation pit 200, one end of the spare pumping pipe 10 is connected to the ground surface, and the other end is connected to the water collection tank 2 or the water collection well 5.

[0076] In the related art, as the construction of the football field progresses, soil may be backfilled inside the foundation pit 200, or there may be a large number of football field-related construction structures inside the foundation pit 200. The backfilled soil and construction structures may interfere with the normal operation of the drainage system, such as the inability to drain the accumulated water.

[0077] In this embodiment, by setting up a spare pumping pipe 10, the underground foundation pit drainage system of the football field provided by this embodiment can still achieve good drainage effect in the middle of the construction process of the football field. For example, even if the backfill soil and construction structure block or cover the cover plate 6, the sump 2 and the water collection well 5 can still collect the accumulated water, and the accumulated water can be pumped out through the spare pumping pipe 10 to complete the drainage. In addition, after the construction of the football field is completed, cement slurry can be poured into the sump 2 and the water collection well 5 through the spare pumping pipe 10, thereby filling the sump 2 and the water collection well 5 to ensure that the structure under the football field is compact.

[0078] The present application also provides a construction method for an underground foundation pit drainage system for a football field, comprising the following steps: First, a foundation pit 200 is excavated, and then the guide member 4 is connected to the enclosure assembly 1 to prepare for the subsequent installation of the guide member 4 and the enclosure assembly 1. The connection method of the guide member 4 and the enclosure assembly 1 includes but is not limited to welding.

[0079] Then: mark the preset installation position of the enclosure assembly 1, and then build the water collection tank 2 according to the preset installation position of the enclosure assembly 1. The water collection tank 2 can be constructed by cement pouring, which helps to avoid mud accumulation in the water collection tank 2.

[0080] Then: connect the enclosure assembly 1 to the foundation pit 200 through the anchor 3, and bury the guide member 4 in the side wall of the foundation pit 200. During the construction process, it should be ensured that the first water collection hole 311 is located at the top of the first water collection pipe 31. After the construction is completed, observe the drainage of the seepage hole 121 and the first water collection pipe 31 to ensure that the water in the soil can be discharged through the seepage hole 121 and the first water collection pipe 31 and fall into the water collection tank 2.

[0081] In addition, after the above steps are completed, the pre-embedding of the second water collecting pipe 9 and the laying of the aquifer 300 can be carried out in sequence according to actual needs.

[0082] The cover plate 6, filter cloth 7, fixing member 8 and other components can also be installed according to actual needs. There is no mandatory requirement for the installation sequence, so it will not be described here.

Claims

1. A football field underground foundation pit drainage system, characterized in that: include: The enclosure assembly (1) comprises a side wall enclosure member (12), wherein the side wall enclosure member (12) is arranged on the side wall of the foundation pit (200), and the side wall enclosure member (12) is provided with a water seepage hole (121); A water collecting trough (2) is arranged on the bottom surface of the foundation pit (200), the water collecting trough (2) being arranged adjacent to the side wall enclosure (12); A plurality of anchoring members (3) for connecting the enclosure assembly (1) to the foundation pit (200), and at least one of the anchoring members (3) is a first water collecting pipe (31); The first water collecting pipe (31) is arranged obliquely and passes through the side wall enclosure (12); the top of the first water collecting pipe (31) passes through the water seepage hole (121); and a first water collecting hole (311) is provided at the top of the first water collecting pipe (31); The lower end of the first water collecting pipe (31) is open and located above the water collecting tank (2), and the higher end is inserted into the side wall of the foundation pit (200); The flow guide member (4) is arranged inside the side wall of the foundation pit (200), the bottom of the flow guide member (4) is in close contact with the upper half of the first water collecting pipe (31), and the side wall thereof is in close contact with the side wall enclosure member (12).

2. The football field underground foundation pit drainage system according to claim 1, characterized in that: The guide member (4) comprises two guide plates, the bottoms of the two guide plates are close to each other and are both in contact with the first water collecting pipe (31), and the tops of the two guide plates are far away from each other.

3. The underground foundation pit drainage system for a football field according to claim 1, characterized in that: There are at least two first water collecting pipes (31) of different heights, and the depth of the first water collecting pipe (31) with a lower height inserted into the side wall of the foundation pit (200) is greater than the depth of the first water collecting pipe (31) with a higher height inserted into the side wall of the foundation pit (200).

4. The football field underground foundation pit drainage system according to claim 1, characterized in that: There are a plurality of the side wall enclosure members (12), and the plurality of the side wall enclosure members (12) are arranged on a plurality of side walls of the foundation pit (200) in a one-to-one correspondence; The enclosure assembly (1) further comprises a horizontal enclosure member (11), and the tops of the plurality of side wall enclosure members (12) are all connected to the horizontal enclosure member (11).

5. The football field underground foundation pit drainage system according to claim 1, characterized in that: The football field underground foundation pit drainage system further comprises a cover plate (6), wherein the cover plate (6) is used to cover the top of the water collecting trough (2).

6. The underground foundation pit drainage system for a football field according to claim 5, characterized in that: The cover plate (6) is rotatably connected to the side wall of the water collecting tank (2), and the cover plate (6) is a filter plate.

7. The football field underground foundation pit drainage system according to claim 1, characterized in that: The underground foundation pit drainage system of the football field also includes a water collection well (5), a filter cloth (7) and a fixing part (8); The water collection well (5) is arranged at the bottom of the water collection tank (2) and is in communication with the water collection tank (2); The fixing member (8) is arranged at the junction of the water collecting tank (2) and the water collecting well (5), and the fixing member (8) is detachably connected to the water collecting tank (2); The filter cloth (7) is laid on the bottom wall of the water collecting tank (2), and the filter cloth (7) is connected to the fixing member (8) and covers the fixing member (8).

8. The football field underground foundation pit drainage system according to claim 7, characterized in that: The underground foundation pit drainage system of the football field also includes a water blocking member; The fixing member (8) has a mounting portion, and the water blocking member is detachably arranged on the mounting portion, thereby blocking the connection between the water collecting tank (2) and the water collecting well (5).

9. The football field underground foundation pit drainage system according to claim 1, characterized in that: The underground foundation pit drainage system of the football field also includes an aquifer (300) and a second water collecting pipe (9); The water storage layer (300) is laid on the bottom wall of the foundation pit (200); A second water collection hole is provided at the top of the second water collection pipe (9); the second water collection pipe (9) is arranged inside or below the aquifer (300); and the second water collection pipe (9) is in communication with the water collection tank (2).

10. A construction method for the underground foundation pit drainage system of a football field according to any one of claims 1 to 9, comprising the following steps: Digging a foundation pit (200), and then connecting the flow guide (4) to the enclosure assembly (1); Marking a preset installation position of the enclosure component (1), and constructing a water collection tank (2) according to the preset installation position of the enclosure component (1); The enclosure assembly (1) is connected to the foundation pit (200) via an anchor (3), and the flow guide (4) is buried in the side wall of the foundation pit (200).

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