CN219080334U - Foundation pit with be favorable to drainage structures - Google Patents

Abstract

The utility model relates to the technical field of large foundation pit construction, and particularly discloses a foundation pit with a water draining structure, which comprises the following scheme: the water-saving type foundation pit is characterized in that open trenches are dug around the bottom of the foundation pit, a water collecting pool is formed at the junction of two adjacent open trenches, a drainage pool is arranged outside the foundation pit, a drainage structure is arranged between the foundation pit and the drainage pool, the drainage structure comprises a drain pipe, a water fall pipe, a water pump, a filter pipe, a filter screen and a pipe cap, the water pump is fixedly installed on the ground plane outside the foundation pit through a mounting bracket, the input end of the water pump is communicated with the water fall pipe, the output end of the water pump is communicated with the drain pipe, the bottom of the water fall pipe is communicated with the water collecting pool, the bottom of the water fall pipe is fixedly connected with the filter pipe, and a coarse filter screen is arranged between the filter pipe and the pipe cap. The utility model solves the problem that the drainage efficiency is low because the foundation pit drainage structure in the prior art is easily blocked by silt and impurities.

Description

Foundation pit with be favorable to drainage structures

Technical Field

The application relates to the technical field of large foundation pit construction, and particularly discloses a foundation pit with a water draining structure.

Background

The soil retaining structure and the groundwater control and environmental protection measures required for ensuring the safety and stability of the underground space formed by excavating the ground downwards during the construction of the underground structure are called foundation pit engineering. The foundation pit engineering is a system engineering integrating geological engineering, geotechnical engineering, structural engineering and geotechnical testing technology. The main content is as follows: engineering investigation, supporting structure design and construction, earth excavation and backfilling, groundwater control, informatization construction, surrounding environment protection and the like. The simplest and most economical method for foundation pit construction is to excavate an enlarged slope, but the foundation pit is often limited by site conditions and surrounding environments, so that an excavation scheme is determined according to geological hydrologic data and the conditions of buildings nearby the site before excavation, and waterproof and drainage work is performed.

In view of this, in the prior art, as the chinese utility model-drainage system structure with publication number CN 217923684U, a foundation pit scheme with a structure beneficial to drainage is provided, which comprises the following steps: including the foundation ditch, the round first escape canal has been seted up at the top of foundation ditch, the grit chamber with first escape canal intercommunication has been seted up at the top of foundation ditch, the round second escape canal has been seted up to the bottom of foundation ditch inner chamber, a plurality of water collecting wells that are linked together with the second escape canal have been seted up to the bottom of foundation ditch inner chamber, a plurality of bottoms of top fixedly connected with of foundation ditch run through to water collecting well inner chamber drainage assembly. This drainage system structure, foundation ditch excavation stage is through the clear row of first escape canal, introduce the sump pit with water through the second escape canal, the water that gets into the sump pit is filtered by filtering assembly, block silt in the aquatic, in the water suction first escape canal in with the sump pit through the drainage assembly, outside the water discharge field is discharged through the grit chamber at last, and filtering assembly installs and dismantles through fastening assembly, overall structure has realized the difficult purpose of blockking up of drainage system structure, guarantee drainage system's normal operating.

According to the scheme, water is introduced into the water collecting well by utilizing the drainage ditch, after being filtered by the filtering component, the water is pumped out of the water collecting well by the drainage component, and the water in the drainage ditch is introduced into the water collecting well by the scheme, because sludge is accumulated on the surface of the filtering component, the water inlet of the water collecting well is easily blocked, the drainage efficiency is low, and the drainage component cannot effectively pump water and drain water, so that a foundation pit with a water draining structure is urgently needed.

Disclosure of Invention

The utility model aims to provide a foundation pit with a favorable drainage structure, which solves the problems that a drainage system of the foundation pit in the prior art is easy to block and the drainage efficiency is low.

In order to achieve the above object, the basic solution of the present utility model provides a foundation pit with a structure for facilitating drainage: including the foundation ditch, open ditch has all been dug all around of foundation ditch bottom, the catch basin has been seted up to the juncture of two adjacent open ditches, the foundation ditch outside is provided with the drainage tank, be equipped with drainage structure in the middle of foundation ditch and the drainage tank, drainage structure includes drain pipe, downcomer, water pump, filter tube, coarse strainer, tube cap, motor and stirring rake, the water pump passes through installing support fixed mounting at foundation ditch outside ground level, water pump input intercommunication downcomer, output intercommunication drain pipe, downcomer bottom intercommunication catch basin, the bottom fixed connection filter tube of downcomer, filter tube bottom fixed connection tube cap, be equipped with the coarse strainer in the middle of filter tube and the tube cap, stirring rake fixed connection is in the tube cap bottom.

Compared with the prior art, the utility model has the advantages that: the drainage structure comprises a filter pipe, a coarse filter screen and stirring paddles, wherein the stirring paddles rotate to form water flow vortex, so that pumping efficiency of the water pump is improved, meanwhile, the stirring paddles block sundries such as stones, the stones are prevented from blocking a water-reducing pipeline, water flows into the water-reducing pipe through the water pump, firstly flows into the coarse filter screen through a pipe cap, larger impurities in water are filtered through the coarse filter screen, smaller impurities in the size are filtered through the filter pipe, and finally filtered impurity-free water is discharged through a drain pipe. The utility model adopts filter tube, coarse filtration net and stirring rake cooperation, and the stirring rake rotates and forms rivers vortex in driving the catch basin, reduces the water pump resistance that draws water, and the material is in the motion all the time in the catch basin, avoids silt caking in the catch basin, leads to the jam.

Further, limiting plates are welded on the outer sides of the joints of the dewatering pipes and the filter pipes, and the bottoms of the limiting plates are fixedly connected to the top of the water collecting tank through bolts.

Compared with the prior art, the utility model has the following effects: the limiting plate is welded on the outer side of the middle section of the water falling pipe, and meanwhile the limiting plate is fixed on the top of the water collecting tank, namely the water falling pipe and the water collecting tank are fixed together through the limiting plate, and the horizontal supporting force of the water falling pipe is applied to the water falling pipe through the limiting plate, so that the water falling pipe is prevented from being shifted and damaged in the operation.

Further, the water collecting tank is limited to be square, the length, the width and the depth of the water collecting tank are all 900mm, and a filter screen is arranged at the communication position of the water collecting tank and the open trench.

Compared with the prior art, the utility model has the following effects: the setting catch basin is the square that length, width, height are 900m for the catch basin can collect more foundation ditch bottom water, sets up the filter screen in the juncture that open ditch led to the catch basin, avoids great debris in the open ditch to flow into in the catch basin and damages drainage structures.

Further, the open trenches are defined to be inverted trapezoids with wide upper portions and narrow lower portions, the maximum depth of the open trenches is 500mm, the width of the tops of the open trenches is 500mm, the width of the bottoms of the open trenches is 400mm, the middle position of the bottom of each open trench is the most convex, and the height of the open trenches is lower towards the two sides.

Compared with the prior art, the utility model has the following effects: because the foundation ditch is the reverse trapezium, so set up the open trench and follow the foundation ditch shape, the bottom of open trench is not horizontal simultaneously, sets up intermediate position and is most protruding, highly reduces gradually along both sides, this setting accelerates the rivers in the open trench to the catch basin.

Further, a fine filter screen and an activated carbon filter screen are sequentially arranged in the filter tube.

Compared with the prior art, the utility model has the following effects: set up double-deck filter screen in the filter tube, the outer coarse filter screen of cooperation filter tube forms three-layer filtration, form first separation outside the downcomer through the coarse filter screen, main separation stone etc. great impurity avoids great impurity to get into to block in the downcomer, the intraductal fine filter screen separation of rethread is little stone etc. impurity, finally adsorb tiny impurity through the active carbon filter screen, and pass through the drain pipe with the water after filtering and discharge, this design has avoided the drainage structure at the in-process of drawing water, impurity jam in the water, damage drainage structure, and because the water of discharge is through three-layer filtration, the water of discharge can directly be used for other uses, energy-concerving and environment-protective.

Further, it is defined that the mounting bracket includes a mounting plate and bolts, the water pump is welded to the mounting plate, and the mounting plate is fixedly connected to the ground by the bolts.

Compared with the prior art, the utility model has the following effects: the mounting bottom plate is welded at the bottom of the water pump, and the mounting bottom plate is mounted on the ground through bolts, so that the water pump is firmly connected with the ground, shaking of the water pump during working is avoided, and the stability of the water pump is enhanced.

Further, defining the open trench surfaces, and paving filter plates.

Compared with the prior art, the utility model has the following effects: and a filter plate is paved on the surface of the open ditch, most of sediment is filtered, and excessive sediment is prevented from flowing into the open ditch.

Further, the output end of the drain pipe is limited to be communicated with a drain tank, and a baffle is paved on the surface of the drain tank.

Compared with the prior art, the utility model has the following effects: the water pumped from the water collecting tank through the water draining structure is drained into the water draining tank through the water draining pipe, and the water drained into the water draining tank can be directly used for other purposes due to the fact that the water is filtered through three layers, so that secondary pollution is avoided, and meanwhile, a baffle is paved on the surface of the water draining tank so as to avoid potential safety hazards.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a foundation pit with a drainage structure according to the present utility model;

FIG. 2 is an enlarged view of a portion of a foundation pit A with a drainage facilitating structure according to the present utility model;

FIG. 3 is an enlarged view of a portion of a foundation pit B with a drainage facilitating structure according to the present utility model;

FIG. 4 is a top view of a foundation pit with a drainage structure in accordance with the present utility model;

fig. 5 is a cross-sectional view of a filter tube 8 with a pit that facilitates drainage in accordance with the present utility model.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: pit 1, open ditch 2, catch basin 3, drainage tank 4, drain pipe 5, downcomer 6, water pump 7, filter tube 8, coarse strainer 9, pipe cap 10, motor 11, stirring rake 12, thin filter screen 13, active carbon filter screen 14, mounting plate 15, bolt 16, filter 17, baffle 18, filter screen 19, limiting plate 20.

Embodiment one:

the specific implementation process of the utility model comprises the following steps: the utility model discloses a foundation pit with a structure beneficial to drainage, which is shown in fig. 1 to 5, and mainly comprises a foundation pit 1, open trenches 2 are dug around the bottom of the foundation pit 1 and used for gathering water at the bottom of the foundation pit 1, a water collecting tank 3 is arranged at the junction of two adjacent open trenches 2, and the water in the open trenches 2 is drained into the water collecting tank 3 for centralized water pumping by a subsequent drainage structure. A drainage tank 4 is arranged outside the foundation pit 1, and water pumped out by the drainage structure is discharged into the drainage tank 4 through a drainage pipe 5. Be equipped with drainage structures in the middle of foundation ditch 1 and drainage tank 4, drainage structures includes drain pipe 5, downcomer 6, water pump 7, filter tube 8, coarse screen 9, pipe cap 10, motor 11 and stirring rake 12, water pump 7 passes through installing support fixed mounting in foundation ditch 1 outside ground plane, water pump 7 input intercommunication downcomer 6, output intercommunication drain pipe 5, in the catch basin 3 is inserted to downcomer 6 bottom, the bottom fixed connection filter tube 8 of downcomer 6, filter tube 8 bottom fixed connection pipe cap 10, be equipped with coarse screen 9 in the middle of filter tube 8 and pipe cap 10, stirring rake 12 fixed connection is in pipe cap 10 bottom. In actual use, the motor 11 is started, the stirring paddle 12 rotates to stir the sludge deposited at the bottom of the water collecting tank 3 to form a water flow vortex, the water pump 7 is started, the water flow vortex formed by the stirring paddle 12 accelerates the water pump 7 to pump water, the water flow firstly passes through the coarse filter screen 9, the coarse filter screen 9 isolates larger stones, the stones are prevented from entering the filter tube 8 to damage the pipeline, the rest water flow continues to be filtered through the filter tube 8, the filtered water flow is conveyed to the drain tube 5 through the water fall tube 6, and finally the filtered water flow is discharged into the drain tank 4 through the drain tube 5. When the drainage structure works, the filter pipe 8, the rough filter screen 9 and the stirring paddle 12 are matched, the stirring paddle 12 rotates to drive the water collecting tank 3 to form water flow vortex, the pumping resistance of the water pump 7 is reduced, substances in the water collecting tank 3 are always in motion, and sediment agglomeration of sludge in the water collecting tank 3 is avoided, so that drainage is not smooth.

As shown in FIG. 1, since the pipeline portion of the drainage structure is long, and the portion of the downcomer 6 and the filter tube 8 needs to be deep into the bottom of the foundation pit 1, a limiting plate 20 is welded on the outer side of the joint of the downcomer 6 and the filter tube 8, and then the bottom of the limiting plate 20 is fixedly connected to the top of the water collecting tank 3 through bolts 16, so that the downcomer 6 and the filter tube 8 are horizontally fixed, and simultaneously, the support force in the vertical direction is given to the downcomer 6 and the filter tube 8, so that the joint of the pipeline is loosened due to vibration during pumping in the use process, and the drainage structure is damaged.

As shown in fig. 1, in order to make the capacity of the water collection tank 3 accommodate water of two open channels 2, the water collection tank 3 is provided with a square shape with the length, width and depth of 900mm, meanwhile, in order to avoid that large impurities in the open channels 2 flow into the water collection tank 3 to cause damage to the drainage structure, a filter screen 19 is arranged at the communication part of the water collection tank 3 and the open channels 2, and the large impurities flowing into the water collection tank 3 from the open channels 2 are filtered.

In the above embodiment, in order to facilitate construction of the open trench 2, the open trench 2 is provided with an inverted trapezoid shape with a wide top and a narrow bottom along the slope of the foundation pit 1, in order to increase the capacity of the open trench 2, the maximum depth of the open trench 2 is 500mm, the width of the top of the open trench 2 is 500mm, the width of the bottom of the open trench 2 is 400mm, in order to accelerate drainage of water in the open trench 2 into the water collecting tank 3, the middle position of the bottom of each open trench 2 is provided with the most protruding part, and the lower the height towards both sides is, so that water flow in the open trench 2 is accelerated to flow into the water collecting tank 3 on both sides.

As shown in fig. 5, in order to avoid clogging of sludge in the pipeline, a fine filter screen 13 and an activated carbon filter screen 14 are sequentially arranged in the filter pipe 8 except for the coarse filter screen 9, the water flow firstly filters impurities such as larger stones through the coarse filter screen 9, then filters smaller stones through the fine filter screen 13, finally adsorbs tiny sand through the activated carbon filter screen 14, and through three-layer filtration, the clogging in the downcomer 6 is avoided as much as possible, the drainage structure is damaged, and the drainage efficiency is improved; and the discharged water is filtered by three layers, so that the discharged water can be directly used for other purposes, and the energy conservation and environmental protection are realized.

As shown in fig. 3, in order to increase the stability of the water pump 7 and the motor 11, the water pump 7 is welded to the mounting base 15, and the mounting base 15 is fixedly connected to the ground by bolts 16.

As shown in fig. 4, filter plates 17 are laid on the surface of the open trench 2 so as to prevent excessive sediment from flowing into the open trench 2.

As shown in fig. 1, in order to avoid splashing of the water discharged by the water discharge pipe 5, the output end of the water discharge pipe 5 is arranged to extend into the bottom of the water discharge tank 4, and meanwhile, as the water in the water discharge tank 4 is filtered through three layers, a baffle 18 is paved on the surface of the water discharge tank 4 in order to avoid secondary pollution and potential safety hazard.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (8)

1. The utility model provides a foundation ditch with be favorable to drainage structures which characterized in that: including the foundation ditch, open ditch has all been dug all around of foundation ditch bottom, the catch basin has been seted up to the juncture of two adjacent open ditches, the foundation ditch outside is provided with the drainage tank, be equipped with drainage structure in the middle of foundation ditch and the drainage tank, drainage structure includes drain pipe, downcomer, water pump, filter tube, filter screen, pipe cap, motor and stirring rake, the water pump passes through installing support fixed mounting at foundation ditch outside ground level, water pump input intercommunication downcomer, output intercommunication drain pipe, downcomer bottom intercommunication catch basin, the bottom fixed connection filter tube of downcomer, filter tube bottom fixed connection pipe cap, be equipped with the coarse strainer in the middle of filter tube and the pipe cap, stirring rake fixed connection is in the pipe cap bottom.

2. A foundation pit with a drainage structure according to claim 1, wherein: the limiting plate is welded on the outer side of the joint of the downcomer and the filter tube, and the bottom of the limiting plate is fixedly connected to the top of the water collecting tank through bolts.

3. A foundation pit with a drainage structure according to claim 2, wherein: the water collecting tank is square, the length, width and depth of the water collecting tank are 900mm, and a filter screen is arranged at the communication position of the water collecting tank and the open ditch.

4. A foundation pit with a drainage structure according to claim 3, wherein: the open trench is in an inverted trapezoid shape with a wide upper part and a narrow lower part, the maximum depth of the open trench is 500mm, the top width of the open trench is 500mm, the bottom width of the open trench is 400mm, the middle position of the bottom of each open trench is the most convex, and the height of the open trench is lower towards two sides.

5. A foundation pit with a drainage structure according to claim 1, wherein: the filter tube is internally provided with a fine filter screen and an active carbon filter screen in sequence.

6. A foundation pit with a drainage structure according to claim 5, wherein: the mounting bracket comprises a mounting bottom plate and bolts, the water pump is welded with the mounting bottom plate, and the mounting bottom plate is fixedly connected to the ground through the bolts.

7. A foundation pit with a drainage structure according to claim 1, wherein: and filter plates are paved on the surfaces of the open trenches.

8. A foundation pit with a drainage structure according to claim 1, wherein: the output end of the drain pipe is communicated with a drain tank, and a baffle plate is paved on the surface of the drain tank.

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