Urban engineering construction drainage box culvert structure

Abstract

The application discloses a kind of urban engineering construction drainage box culvert structures, relate to drainage box culvert structure field, solve the existing urban engineering construction drainage box culvert structure when using, it is difficult to carry out the synchronous filtration of water body in the process of conveying, make when water volume is larger, filtration pressure increases, influence water body conveying efficiency Problem, including lower box, upper box, conveying mechanism, connecting mechanism and circulating mechanism, conveying mechanism includes conveying pipe and filter piece, the water body of the area inside lower box and upper box is conveyed in the present application, and in the process of conveying, using the automatic water seepage function of filter piece, water body is preliminarily filtered and seeps into conveying pipe for layered conveying, the connecting place is treated by connecting mechanism to prevent seepage, and the seepage of connecting seam is conveyed to conveying pipe for discharge, relatively clean water body in conveying pipe is circulated by circulating mechanism and is pumped to the inside of lower box and upper box for inner wall auxiliary flushing operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drainage box culvert structure, in particular to a drainage box culvert structure for urban engineering construction. BACKGROUND

[0002] In the management of the two banks of the Yangtze River, the drainage box culvert plays an important role. It can quickly collect rainwater, surface runoff and part of domestic sewage in the two-bank area, and discharge it in time through the internal channel of the box culvert, reducing the risk of flood season river backflow or regional waterlogging, and protecting the coastal towns, farmland and infrastructure. Part of the box culvert will preliminarily distribute the collected sewage, discharging the qualified water into the Yangtze River, and guiding the over-standard sewage to the sewage treatment plant to reduce direct pollution and help improve the water quality of the Yangtze River. It provides an organized drainage path for the coastal roads, buildings and other facilities to avoid problems such as foundation settlement and structure damage caused by rainwater penetration, and ensures the safety of the coastal engineering.

[0003] The existing drainage box culvert structure is mostly designed with a single pipeline. The water body is directly transported inside the box culvert to the terminal position for unified filtration treatment before being discharged to the designated position. This processing method has low efficiency. When the water volume is large, the processing efficiency of the filtration equipment is insufficient, and there are many impurities in the water body inside the box culvert, which requires a large processing strength in the subsequent unified filtration output process. SUMMARY

[0004] The purpose of the present application is to provide a drainage box culvert structure for urban engineering construction which can improve the conveying efficiency and prevent water seepage, in order to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a drainage box culvert structure for urban engineering construction, comprising a lower box body, an upper box body, a conveying mechanism, a connecting mechanism and a circulating mechanism. The conveying mechanism comprises a conveying pipe fixedly installed inside the lower box body. The upper side of the conveying pipe is provided with a filter. The conveying mechanism is used for conveying water in the area inside the lower box body and the upper box body, and using the automatic water seepage function of the filter to preliminarily filter the water and seep into the conveying pipe for layered conveying, thereby improving the efficiency of subsequent water treatment. The connecting mechanism is installed on the lower box body and the upper box body, and is used for preventing seepage at the connection and conveying the seepage at the connection joint to the conveying pipe for discharge, thereby reducing the probability of seepage. The circulating mechanism is installed inside the upper box body and is used for circulating and pumping the relatively clean water in the conveying pipe to the inside of the lower box body and the upper box body for internal wall flushing operation, thereby improving the conveying efficiency and preventing water seepage.

[0006] Preferably, the conveying mechanism further comprises support frames fixedly installed on both sides of the inner wall of the lower box, the upper box and the lower box are fixedly connected with a steel frame, the side surface of the support frame is fixedly connected with a connecting rib fixedly connected with the steel frame, the cross section of the support frame is L-shaped, the lower box, the upper box and the support frame are all casted with concrete, and the side surface of the support frame is in abutment with the outer wall of the conveying pipe, so that the water in the area inside the lower box and the upper box can be conveniently conveyed.

[0007] Preferably, the filter comprises a water permeable plate inserted with the support frames on both sides, the upper side of the conveying pipe is provided with a storage groove, the top of the storage groove is clamped with a support net, the storage groove is provided with a gravel layer, a plurality of groups of water permeable holes are uniformly arranged on the bottom of the storage groove, a plurality of groups of sealing plates are fixedly connected to the upper side of the support net, and the two sides of the water permeable plate are provided with clamping grooves capable of being clamped with the sealing plates, so as to facilitate the preliminary filtration of the water and the infiltration of the water into the conveying pipe for layered conveying, and the efficiency of subsequent water treatment is improved.

[0008] Preferably, the connecting mechanism comprises an expansion slot fixedly installed on the top surface of the lower box on both sides, and the inner wall of the expansion slot is slidably connected with an expansion rod in the vertical direction, the cross section of the expansion rod is L-shaped, and the upper and lower sides of the expansion rod are provided with sealing strips, and the expansion slot is provided with an output member for discharging the water in the expansion slot into the conveying pipe, so as to facilitate the anti-seepage treatment of the connection and the seepage of the connection joint into the conveying pipe for discharge, thereby reducing the probability of seepage.

[0009] Preferably, the output member comprises a plurality of first pipelines fixedly installed in the inner part of the lower box, the top end of the first pipeline is in communication with the bottom surface of the expansion slot, the side surface of the conveying pipe is provided with a threaded pipe, the inner wall of the bottom end of the first pipeline is provided with a first thread groove capable of being threadedly connected with the outer wall of the threaded pipe, and the inner wall of the end of the threaded pipe away from the first thread groove is provided with a driving groove, so as to facilitate the discharge of the water in the expansion slot into the conveying pipe.

[0010] Preferably, the connecting mechanism further comprises an annular water stop fixedly installed on both ends of the lower box and the upper box, the bottom surface of the expansion slot is fixedly connected with a first connecting steel plate fixedly connected with the lower box, and the upper side of the expansion rod is fixedly connected with a second connecting steel plate fixedly connected with the upper box, so as to facilitate the anti-seepage of the connection joint by the annular water stop, and the first connecting steel plate and the second connecting steel plate can increase the connection strength between the expansion slot and the lower box and between the expansion rod and the upper box.

[0011] Preferably, the circulating mechanism comprises a conveying pump fixedly installed in the interior of the upper tank, the output end of the conveying pump is connected in communication with a connecting pipe, the side surface of the connecting pipe is connected in communication with a plurality of groups of spray heads, the input end of the conveying pump is connected in communication with a second pipeline, the bottom end of the second pipeline is attached to the upper side of the bottom end of the annular water stop, the side surface of the second pipeline is connected in communication with a third pipeline, the third pipeline is provided with a pumping member for pumping the water in the conveying pipe, so as to facilitate the pumping of the relatively clean water in the conveying pipe to the interiors of the lower tank and the upper tank for the inner wall washing operation.

[0012] Preferably, the pumping member comprises a plurality of groups of rotating pipes installed on both sides of the conveying pipe, the inner wall of the rotating pipe is provided with a second screw groove capable of being screwed with the outer wall of the third pipeline, the inner wall of the rotating pipe is rotatably connected with a suction pipe, the second pipeline is provided with a one-way valve for preventing the water in the third pipeline from being conveyed to the bottom end of the second pipeline, the bottom end side surface of the suction pipe and the second pipeline are both provided with a plurality of groups of side holes, so as to facilitate the pumping of the water in the conveying pipe.

[0013] Preferably, the bottom of the water seepage hole is fixedly connected with carbon fiber grass, so as to further assist the filtering and cleaning operation of the water in the conveying pipe.

[0014] Preferably, the water seepage plate adopts a CT granite water permeable plate, and the conveying pipe adopts a PE pipe, so as to improve the strength and service life of the whole structure.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The application provides a city engineering construction drainage box culvert structure, which solves the problem that the existing city engineering construction drainage box culvert structure is difficult to filter water bodies synchronously during conveying, so that the filtering pressure increases when the water volume is large, and the water body conveying efficiency is affected. The conveying mechanism is used for conveying water bodies through the area inside the lower box body and the upper box body, and the automatic water seepage function of the filter is used to preliminarily filter the water bodies during conveying, so that the water bodies are seeped into the conveying pipe for layered conveying, the efficiency of subsequent water body treatment is improved, the connecting mechanism is installed on the lower box body and the upper box body, is used for preventing seepage at the connecting position, and seepage water at the connecting seam is conveyed into the conveying pipe for discharge, so that the probability of seepage is reduced, the circulating mechanism is installed inside the upper box body, is used for circulating and pumping the relatively clean water bodies in the conveying pipe to the inside of the lower box body and the upper box body for inner wall flushing operation. The device has stable overall structure, is convenient for construction and long-term use, the automatic filtering and purifying structure arranged in the box culvert can continuously and stably preliminarily filter and purify water bodies, simultaneously, the problem that the water volume conveying efficiency is reduced due to water body filtering during large water volume conveying is relieved, the efficient output of part of the water bodies is ensured, the pressure of water body conveying is relieved, and the water seepage prevention effect of the overall structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic diagram of the application;

[0018] Figure 2 It is a conveying mechanism local structure schematic diagram of the application;

[0019] Figure 3 It is a connecting mechanism local structure schematic diagram of the application;

[0020] Figure 4 It is Figure 3 A region enlargement diagram in the middle;

[0021] Figure 5 It is a circulating mechanism local structure schematic diagram of the application;

[0022] Figure 6 It is Figure 5 B region enlargement diagram in the middle;

[0023] Figure 7 It is Figure 5 C region enlargement diagram in the middle;

[0024] Figure 8 It is Figure 5 D region enlargement diagram in the middle;

[0025] Figure 9 It is a filter local structure schematic diagram of the application;

[0026] Figure 10 It is a filter local structure split diagram of the application;

[0027] Figure 11 For Figure 10 Enlarged view of the E area;

[0028] Figure 12 For the whole structure of the conveying pipe schematic diagram.

[0029] In the figure: 1 - lower box; 2 - upper box; 3 - conveying mechanism; 4 - conveying pipe; 5 - filter; 6 - connecting mechanism; 7 - circulating mechanism; 8 - support frame; 9 - steel frame; 10 - connecting rib; 11 - water seepage plate; 12 - storage tank; 13 - support net; 14 - gravel layer; 15 - water seepage hole; 16 - sealing plate; 17 - clamping groove; 18 - expansion groove; 19 - expansion rod; 20 - sealing strip; 21 - output; 22 - first pipe; 23 - threaded pipe; 24 - first threaded groove; 25 - driving groove; 26 - annular water stop; 27 - first connecting steel plate; 28 - second connecting steel plate; 29 - conveying pump; 30 - connecting pipe; 31 - nozzle; 32 - second pipe; 33 - third pipe; 34 - pumping unit; 35 - rotating pipe; 36 - second threaded groove; 37 - suction pipe; 38 - one-way valve; 39 - side hole; 40 - carbon fiber grass. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] Please refer to Figures 1-12 The present application provides a technical solution: a drainage box culvert structure for urban engineering construction, comprising a lower box 1, an upper box 2, a conveying mechanism 3, a connecting mechanism 6 and a circulating mechanism 7. The conveying mechanism 3 comprises a conveying pipe 4 fixedly installed inside the lower box 1. The upper side of the conveying pipe 4 is provided with a filter 5. The conveying mechanism 3 is used for conveying water in the area inside the lower box 1 and the upper box 2, and in the process of conveying, the filter 5 is used to automatically seep water and filter the water into the conveying pipe 4 for layered conveying, thereby improving the efficiency of subsequent water treatment. The connecting mechanism 6 is installed on the lower box 1 and the upper box 2, and is used for anti-seepage treatment of the connection and conveying of seepage at the connecting seam to the conveying pipe 4 for discharge, thereby reducing the probability of seepage. The circulating mechanism 7 is installed inside the upper box 2, and is used for circulating and pumping relatively clean water in the conveying pipe 4 to the inside of the lower box 1 and the upper box 2 for inner wall flushing operation.

[0032] The conveying mechanism 3 further comprises support frames 8 fixedly installed on both sides of the inner wall of the lower box body 1, and a reinforcing frame 9 fixedly connected with the inside of the lower box body 1 and the upper box body 2, and the side surface of the support frame 8 is fixedly connected with a connecting rib 10 fixedly connected with the reinforcing frame 9, and the cross section of the support frame 8 is L-shaped, and the lower box body 1, the upper box body 2 and the support frame 8 are all made of concrete pouring, and the side surface of the support frame 8 is in abutment with the outer wall of the conveying pipe 4.

[0033] The filter 5 comprises water permeable plates 11 inserted with the two support frames 8, and the water permeable plates 11 are made of CT granite water permeable plates, and the conveying pipe 4 is made of a PE pipe, and the upper side of the conveying pipe 4 is provided with storage grooves 12, and the top of each storage groove 12 is clamped with a support net 13, and the storage groove 12 is provided with a gravel layer 14, and the bottom of each storage groove 12 is uniformly provided with a plurality of water permeable holes 15, and the bottom of each water permeable hole 15 is fixedly connected with carbon fiber grass 40, and the upper side of the support net 13 is uniformly fixedly connected with a plurality of sealing plates 16, and the two sides of the water permeable plate 11 are both provided with clamping grooves 17 capable of being clamped with the sealing plates 16.

[0034] The connecting mechanism 6 comprises telescopic grooves 18 fixedly installed on the top surface of both sides of the lower box body 1, and the inner wall of each telescopic groove 18 is vertically slidably connected with a telescopic rod 19, and the cross section of the telescopic rod 19 is L-shaped, and the upper and lower sides of the telescopic rod 19 are both provided with sealing strips 20, and the telescopic groove 18 is provided with output members 21 for discharging water in the telescopic groove 18 into the conveying pipe 4, and the connecting mechanism 6 further comprises annular water stop belts 26 fixedly installed at both ends of the lower box body 1 and the upper box body 2, and the bottom surface of the telescopic groove 18 is fixedly connected with first connecting steel plates 27 fixedly connected with the lower box body 1, and the upper side of the telescopic rod 19 is fixedly connected with second connecting steel plates 28 fixedly connected with the upper box body 2.

[0035] The output member 21 comprises a plurality of first pipelines 22 fixedly installed in the inside of the lower box body 1, and the top end of each first pipeline 22 is in communication connection with the bottom surface of the telescopic groove 18, and the side surface of the conveying pipe 4 is provided with a threaded pipe 23, and the inner wall of the bottom end of each first pipeline 22 is provided with a first threaded groove 24 capable of being threadedly connected with the outer wall of the threaded pipe 23, and the inner wall of the end of the threaded pipe 23 away from the first threaded groove 24 is provided with a driving groove 25.

[0036] The circulating mechanism 7 comprises a conveying pump 29 fixedly installed in the inside of the upper box body 2, and the output end of the conveying pump 29 is in communication connection with a connecting pipe 30, and the side surface of the connecting pipe 30 is in communication connection with a plurality of nozzles 31, and the input end of the conveying pump 29 is in communication connection with a second pipeline 32, and the bottom end of the second pipeline 32 is in abutment with the top side of the bottom end of the annular water stop belt 26, and the side surface of the second pipeline 32 is in communication connection with a third pipeline 33, and the third pipeline 33 is provided with a pumping member 34 for pumping water in the conveying pipe 4.

[0037] The pumping member 34 comprises a plurality of groups of rotating pipes 35 installed on both sides of the conveying pipe 4, the inner wall of the rotating pipe 35 is provided with a second threaded groove 36 capable of being threadedly connected with the outer wall of the third pipe 33, the inner wall of the rotating pipe 35 is rotatably connected with a pumping pipe 37, the second pipe 32 is provided with a one-way valve 38 for preventing the water in the third pipe 33 from being conveyed to the bottom end of the second pipe 32, and a plurality of side holes 39 are formed in the bottom end side of the second pipe 32 and the pumping pipe 37.

[0038] Working principle: first, dig a foundation pit and install a reinforcing frame 9 and an internal pipe system (i.e. the first pipe 22, the second pipe 32, the expansion slot 18, the first connecting steel plate 27, the second connecting steel plate 28 and the like), then cast and form the lower box body 1 and coat a waterproof layer on the inner wall, then lay and install the conveying pipe 4 to the inside of the lower box body 1, install the threaded pipe 23 and the rotating pipe 35, realize the connection of the pipes, then fix the connecting rib 10 to the lower box body 1 and cast the support frame 8, so that the conveying pipe 4 is wrapped in the position between the lower box body 1 and the support frame 8, then cast and form the upper box body 2 and coat a waterproof layer on the inner wall, hang the carbon fiber grass 40 below the water seepage hole 15 at the bottom of the storage tank 12 to filter the water in the conveying pipe 4, install the gravel layer 14 in the storage tank 12 to assist the filtration of the water, then lay the support net 13 on the top, and then insert the water seepage plate 11 into the support frame 8 on both sides, so that the preliminary construction operation of the whole box culvert is completed.

[0039] The water seepage plate 11 is a CT granite water permeable plate, in terms of strength: the CT granite water permeable plate is made of natural granite particles and special additives, retains the high strength characteristics of granite, has good compressive strength and bending strength, and can withstand vehicle, pedestrian and other loads; in terms of permeation and filtration: the plate has a unique pore structure, the surface layer can quickly permeate water, and the water is conducted downward through the pores, at the same time, the plate has a certain filtering effect on the mud, impurities and the like in the water, so as to avoid clogging the pores.

[0040] In use, the water body can be transported mainly through the area above the water permeable plate 11, the internal space is sufficient, the workers can enter the box culvert for cleaning, and the large water flow can be easily guided, the sealing plate 16 can preliminarily seal the connection of the water permeable plate 11, so that large impurities cannot penetrate into the lower area, and the L-shaped clamping support frame 8 on both sides can realize the sealing of both sides of the water permeable plate 11, the water body will be slowly transported to the lower part through the water permeable plate 11, and then enter the bottom of the conveying pipe 4 through the supporting net 13, the gravel layer 14 and the water permeable hole 15. The water output from the conveying pipe 4 does not need to be filtered by large particles, which improves the output efficiency of the water in the area, and can be used with a water pump to ensure the water flow rate in the conveying pipe 4, so that the water quantity in the conveying pipe 4 is always not in a full load state, and the water above can be continuously infiltrated and transported to the lower part.

[0041] The expansion joint is arranged at the connection between the upper box body 2 and the lower box body 1, the waterproof layer inside can waterproof most of the inner wall of the upper box body 2 and the lower box body 1, so that the water cannot directly seep out to the outside area through the upper box body 2 and the lower box body 1, and the position of the expansion joint will be opened and closed, at this time, through the internal expansion slot 18 and the expansion rod 19, it can be ensured that the expansion rod 19 can move in the expansion slot 18 during slight movement, and the preliminary sealing is realized through the sealing strips 20 on the upper and lower sides, so as to reduce the amount of water seepage, and the water seeped from the middle position needs to be stored in the expansion slot 18 in advance before seeping out to the surrounding, at this time, since a plurality of first pipelines 22 capable of being connected with the conveying pipe 4 are arranged at the bottom of the expansion slot 18, the accumulated water in the expansion slot 18 will be conveyed downward to the threaded pipe 23 through the first pipeline 22 and discharged into the conveying pipe 4, since the water quantity in the conveying pipe 4 is always in a small state, it is ensured that the accumulated water in the expansion slot 18 can be continuously discharged, so as to avoid the position of the expansion joint from seeping water.

[0042] And the position where the multiple lower box bodies 1 are connected needs to be installed with a ring-shaped water stop 26 before pouring, and then connected and poured, so as to ensure that the position of the connecting joint has a preliminary anti-seepage effect, when the water seeped from the inside to the surrounding accumulates to the upper area of the bottom of the ring-shaped water stop 26, the second pipeline 32 can be started to pump the water at the bottom of the second pipeline 32 upward and discharge it to the inside of the box culvert through the connecting pipe 30 and the nozzle 31, or the nozzle 31 can be closed, and only the accumulated water at the bottom of the second pipeline 32 is pumped to the upper end position of the second pipeline 32, and then the one-way valve 38 is passed, and then the conveying pump 29 is closed, at this time, the water in the second pipeline 32 will automatically flow downward, enter the rotating pipe 35 through the third pipeline 33 on the side, and be discharged into the conveying pipe 4 through the suction pipe 37, so as to reduce the accumulated water at the position of the connecting joint and reduce the probability of seepage.

[0043] When the inside of the box culvert needs to be cleaned, the conveying pump 29 can be started to pump the relatively clean water in the conveying pipe 4 through the suction pipe 37, the rotating pipe 35, the third pipe 33 and the second pipe 32 into the connecting pipe 30, and then sprayed downward through the spray head 31 arranged at the top end of the inner wall of the upper box 2 to flush the inside of the box culvert. In this process, no external water source needs to be connected, and the operation is convenient and efficient. Through the design of the threaded pipe 23 and the rotating pipe 35, the first pipe 22 and the third pipe 33 can be threadedly connected, installed and fixed in the conveying pipe 4, respectively. A sealing ring can be arranged at the pipe connection to improve the sealing performance.

[0044] The carbon fiber grass 40 is a water purification material with carbon fiber as the base material, has a large specific surface area, and can efficiently absorb, adsorb and intercept dissolved and suspended pollutants in water. At the same time, it can also provide good attachment conditions for microorganisms, allowing them to form a "biofilm" on the surface with strong purification function, decompose organic pollutants in water through the metabolic action of microorganisms, and further improve the purification effect. In addition, the carbon fiber grass 40 has strong chemical stability and can maintain structural stability in the pH range of 3-11 and the temperature range of -20℃-80℃, and can adapt to the complex environment of the sewer.

[0045] The overall structure of the device is stable, convenient for construction and long-term use, and the automatic filtering and purifying structure arranged inside the box culvert can continuously and stably perform preliminary filtering and purifying operations on the water body, thereby alleviating the problem of reduced water delivery efficiency caused by water filtration during large water delivery, ensuring efficient output of part of the water body, relieving the pressure of water delivery, and improving the overall water leakage prevention effect of the structure.

[0046] The sealing rubber such as the sealing plate 16, the sealing strip 20, the annular water stop 26 and the sealing ring is made of fluorine rubber, has certain elasticity, and has strong corrosion resistance, acid and alkali resistance, high temperature resistance and aging resistance.

[0047] It should be noted that, in the present text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device.

[0048] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A drainage box culvert structure for urban engineering construction, comprising a lower box body (1), an upper box body (2), a conveying mechanism (3), a connecting mechanism (6) and a circulation mechanism (7), characterized in that: The conveying mechanism (3) includes a conveying pipe (4) fixedly installed inside the lower box (1), and a filter element (5) is provided on the upper side of the conveying pipe (4). The conveying mechanism (3) is used to convey water through the area inside the lower box (1) and the upper box (2), and in the process of conveying, the water is initially filtered by using the automatic water seepage function of the filter element (5) to infiltrate the water into the conveying pipe (4) for layered conveying, thereby improving the efficiency of subsequent water treatment. The connecting mechanism (6) is installed on the lower box (1) and the upper box (2) for anti-seepage treatment of the connection and conveying the seepage water at the connection seam into the conveying pipe (4) for discharge, thereby reducing the probability of water seepage. The circulation mechanism (7) is installed inside the upper box (2) for circulating the relatively clean water inside the conveying pipe (4) to the inside of the lower box (1) and the upper box (2) for inner wall flushing operation. (6) comprising telescopic grooves (18) fixedly mounted on the top surfaces of both sides of the lower box (1), the inner wall of the telescopic groove (18) being slidably connected to a telescopic rod (19) in the vertical direction, the cross section of the telescopic rod (19) being L-shaped, the upper and lower sides of the telescopic rod (19) being provided with sealing strips (20), the telescopic groove (18) being provided with an output member (21) for discharging the water in the telescopic groove (18) into the delivery pipe (4), the output member (21) comprising a plurality of first pipes (22) fixedly mounted inside the lower box (1), the top end of the first pipe (22) being connected to the bottom surface of the telescopic groove (18), the side surface of the delivery pipe (4) being provided with a threaded pipe (23), the inner wall of the bottom end of the first pipe (22) being provided with a first threaded groove (24) capable of being threadedly connected to the outer wall of the threaded pipe (23), and the inner wall of one end of the threaded pipe (23) away from the first threaded groove (24) being provided with a driving groove (25).

2. The drainage box culvert structure for urban engineering construction according to claim 1, characterized in that: The connecting mechanism (6) further includes an annular water stop (26) fixedly mounted on both ends of the lower box body (1) and the upper box body (2); the bottom surface of the telescopic groove (18) is fixedly connected to a first connecting steel plate (27) fixedly connected to the lower box body (1); and the upper side of the telescopic rod (19) is fixedly connected to a second connecting steel plate (28) fixedly connected to the upper box body (2).

3. The drainage box culvert structure for urban engineering construction according to claim 2, characterized in that: The circulation mechanism (7) includes a delivery pump (29) fixedly installed inside the upper box (2), the output end of the delivery pump (29) is connected to a connecting pipe (30), the side of the connecting pipe (30) is connected to multiple groups of nozzles (31), the input end of the delivery pump (29) is connected to a second pipe (32), the bottom end of the second pipe (32) is in contact with the upper side of the bottom end of the annular water stop (26), the side of the second pipe (32) is connected to a third pipe (33), and the third pipe (33) is provided with a pumping part (34) for pumping water in the delivery pipe (4).

4. The drainage box culvert structure for urban engineering construction according to claim 3, characterized in that: The pumping member (34) includes a plurality of rotating tubes (35) installed on both sides of the delivery pipe (4), the inner wall of the rotating tube (35) is provided with a second thread groove (36) capable of being threadedly connected to the outer wall of the third pipe (33), the inner wall of the rotating tube (35) is rotatably connected to a suction pipe (37), the second pipe (32) is provided with a one-way valve (38) for preventing the water in the third pipe (33) from being transported to the bottom end of the second pipe (32), and the bottom side surfaces of the suction pipe (37) and the second pipe (32) are both provided with a plurality of side holes (39).

5. The drainage box culvert structure for urban engineering construction according to claim 1, characterized in that: The conveying mechanism (3) further comprises a support frame (8) fixedly mounted on both sides of the inner wall of the lower box body (1); a steel frame (9) is fixedly connected to the interior of the upper box body (2) and the lower box body (1); a connecting rib (10) fixedly connected to the steel frame (9) is fixedly connected to the side of the support frame (8); the cross section of the support frame (8) is L-shaped; the lower box body (1), the upper box body (2) and the support frame (8) are all cast by concrete; the side of the support frame (8) is in contact with the outer wall of the conveying pipe (4).

6. The drainage box culvert structure for urban engineering construction according to claim 5, characterized in that: The filter element (5) includes a water seepage plate (11) plugged into the support frames (8) on both sides. A storage tank (12) is provided on the upper side of the delivery pipe (4). A support net (13) is clamped on the top of the storage tank (12). A gravel layer (14) is provided in the storage tank (12). A plurality of water seepage holes (15) are uniformly provided on the bottom of the storage tank (12). A plurality of sealing plates (16) are uniformly fixedly connected to the upper side of the support net (13). A clamping groove (17) capable of being clamped with the sealing plate (16) is provided on both sides of the water seepage plate (11).

7. The drainage box culvert structure for urban engineering construction according to claim 6, characterized in that: Carbon fiber grass (40) is fixedly connected to the bottom of the water seepage hole (15).

8. The drainage box culvert structure for urban engineering construction according to claim 6, characterized in that: The water seepage plate (11) is made of CT granite water seepage plate, and the delivery pipe (4) is made of PE pipe.

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