CN215669615U - Drainage device for pouring concrete and concrete foundation - Google Patents
Drainage device for pouring concrete and concrete foundation Download PDFInfo
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- CN215669615U CN215669615U CN202121297591.5U CN202121297591U CN215669615U CN 215669615 U CN215669615 U CN 215669615U CN 202121297591 U CN202121297591 U CN 202121297591U CN 215669615 U CN215669615 U CN 215669615U
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Abstract
The utility model discloses a pumping and drainage device for pouring concrete and a concrete foundation, which are used for pumping and drainage in pouring construction of the concrete foundation under a karst fissure geological water burst environment. The drainage device for pouring concrete provided by the utility model has the advantages that the workability of the concrete poured in the foundation pit is not changed, the strength of the concrete is ensured to reach the design standard, and the pouring quality of the concrete is ensured.
Description
Technical Field
The utility model relates to the technical field of concrete pouring under a karst fissure geological continuous water inrush environment, in particular to a pumping and drainage device for concrete pouring. The utility model also designs a concrete foundation.
Background
In the southern area of China, a plurality of rock-soil interbedded layers and all-rock strata exist, in the geological condition, a large amount of karst fissure water is usually existed due to cracks or karst holes in the strata, the karst fissure water is vertically and horizontally communicated due to the karst cracks and is mostly communicated with a supply source rich in water resources, a large amount of karst fissure water can be gushed in during the excavation of a foundation pit, and great difficulty is brought to the construction of a foundation pit structure.
In the foundation pit construction process in the karst crack area, continuous water gushing brings great inconvenience to concrete pouring construction, the mix proportion of concrete is changed when concrete is poured in the foundation pit due to the fact that continuous water gushing and water cannot be discharged, the workability of the concrete is changed, the strength of the concrete cannot reach the design standard, and the pouring quality cannot be guaranteed.
The method is characterized in that a water pump is adopted to extract accumulated water in a foundation pit, concrete is poured into the foundation pit after the accumulated water is completely extracted, and the water pump is used for removing the accumulated water in the pouring process.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pumping and drainage device for pouring concrete, which solves the technical problems that in the pouring construction process of a concrete foundation in the existing karst fissure geological water burst environment, water in a foundation pit is pumped out after permeating to the surface of the concrete, so that the mix proportion of the concrete poured in the foundation pit is changed, the workability of the concrete is changed, and the strength of the concrete cannot reach the design standard.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a drainage device for concreting, a drainage is taken out in concreting construction of concrete foundation under karst fissure geology gushes water environment, including locating the protection component that permeates water in the foundation ditch under karst fissure geology gushes water environment, diversion subassembly, water storage component and the subassembly that draws water, the protection component that permeates water supports in the foundation ditch, diversion subassembly and water storage component communicate each other and pre-buried in the protection component that permeates water jointly, and then make the water that gushes into in the foundation ditch permeate water the protection component and collect in water storage component under the guide of diversion subassembly, the input and the water storage component intercommunication of the subassembly that draws water, the output of the subassembly that draws water extends outside the foundation ditch, and then discharge the water that is in the foundation ditch to outside the foundation ditch when concreting in the foundation ditch, guarantee the workability of the concrete of pouring in the foundation ditch.
Furtherly, the diversion subassembly is responsible for including pre-buried diversion branch pipe and the diversion in the protection component that permeates water, and the output and the water storage component intercommunication of diversion person in charge, and the input of diversion person in charge communicates with the output of diversion branch pipe, and the input of diversion branch pipe is used for leading the water in the foundation ditch to lead in the diversion person in charge and then arrange the water to the water storage component in through diversion person in charge.
Further, the output ends of the water diversion branch pipes are arranged in a downward inclined mode, and/or the output ends of the water diversion main pipes are arranged in a downward inclined mode.
Furthermore, the pipe wall of the input end of the water diversion branch pipe is provided with water inlet holes penetrating through the pipe wall, the water inlet holes are distributed at intervals along the axial direction and/or the circumferential direction of the water diversion branch pipe to form a water inlet hole group, and the water diversion assembly further comprises a filter screen which is wound on the input end of the water diversion branch pipe and is used for covering the water inlet holes with a screen.
Further, water storage component locates the middle part of foundation ditch, the diversion is responsible for including the first person in charge and the second person in charge who lays relatively along the length direction of foundation ditch, the diversion branch pipe is responsible for the second branch pipe that communicates including locating the first person in charge at least one side and with the first person in charge intercommunication and locating the second person in charge at least one side and with the second respectively, the output of the first person in charge stretches into in to water storage component and with water storage component intercommunication, the input of the first person in charge and the output intercommunication of first branch pipe, the output of the second person in charge stretches into in to water storage component and with water storage component intercommunication, the input that the second was responsible for communicates with the output of second branch pipe.
Further, the water storage component adopts the bottom open-ended storage water tank, and the pit is concave to be equipped with the holding hole that is used for the holding storage water tank, and the storage water tank is located in the holding hole, and the output of leading water main pipe extends the top of storage water tank and communicates with the storage water tank, and the input of the subassembly that draws water extends the bottom of storage water tank and communicates with the storage water tank.
Further, the subassembly that draws water includes suction pump and drain pipe, and the input of suction pump extends water storage components's bottom and communicates with water storage components, and the output of suction pump communicates with the input of drain pipe, and the output of drain pipe outwards extends outside the foundation ditch.
Furthermore, the water pumping assembly further comprises a plug for plugging the output end of the drain pipe, and then the drain pipe is plugged after concrete is poured in the foundation pit.
Furthermore, the protection subassembly that permeates water includes the first slice stone protective layer of shop's cover at the bottom of the hole of foundation ditch and lays the second slice stone protective layer on first slice stone protective layer upper portion, and diversion branch pipe and diversion main pipe are pre-buried between first slice stone protective layer and second slice stone protective layer.
The utility model also provides a concrete foundation which comprises the pumping and drainage device for the cast concrete, wherein the pumping and drainage device for the cast concrete is pre-embedded in the concrete foundation.
The utility model has the following beneficial effects:
the pumping and drainage device for pouring concrete comprises a water permeable protection component, a water diversion component, a water storage component and a pumping component. The water diversion assembly and the water storage assembly are arranged in the foundation pit to collect water bodies gushing into the foundation pit from karst fissures, the water bodies collected in the water storage assembly are pumped out of the foundation pit through the water pumping assembly to discharge the water bodies in the foundation pit so as to facilitate concrete pouring of the foundation pit, meanwhile, underground water gushing from the karst fissures is continuously discharged out of the foundation pit through the water pumping assembly in the concrete pouring process, poured concrete in the foundation pit cannot be diluted by the underground water gushing from the karst fissures, a good pouring environment is kept, the workability of the concrete cannot be changed, the strength of the concrete can be guaranteed to reach a design standard, and the pouring quality of the concrete is guaranteed; through leading water subassembly and water storage subassembly pre-buried in the protection subassembly that permeates water, the groundwater that gushes into from the karst crack is collected in water storage subassembly through leading water subassembly through the protection subassembly that permeates water, simultaneously, and the protection subassembly that permeates water is favorable to avoiding the concrete foundation who pours the back formation to subside as the main supporting part that supports the concrete of pouring in the foundation ditch, avoids pouring the concrete crush injury leading water subassembly in the foundation ditch.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of a horizontal section of a concrete foundation according to a preferred embodiment of the present invention;
fig. 2 is a sectional view a-a in fig. 1.
Illustration of the drawings:
10. a water permeable protection component; 11. a first stone protective layer; 12. a second stone protection layer; 20. a water diversion assembly; 21. a water diversion branch pipe; 22. a water diversion main pipe; 23. a filter screen; 30. a water storage assembly; 40. a water pumping assembly; 41. a water pump; 42. a drain pipe; 43. and (7) a plug.
Detailed Description
The embodiments of the utility model will be described in detail below with reference to the accompanying drawings, but the utility model can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a horizontal section of a concrete foundation according to a preferred embodiment of the present invention; fig. 2 is a sectional view a-a in fig. 1.
As shown in fig. 1 and fig. 2, the pumping and drainage device for concreting of the embodiment is used for pumping and drainage for concreting construction of a concrete foundation under a karst fissure geological water burst environment, and comprises a water permeable protection component 10 arranged in a foundation pit under the karst fissure geological water burst environment, a water diversion component 20 comprising the water permeable protection component 10, a water storage component 30 and a pumping component 40, wherein the water permeable protection component 10 is supported in the foundation pit, the water diversion component 20 comprising the water permeable protection component 10 and the water storage component 30 are mutually communicated and are jointly embedded in the water permeable protection component 10, so that water flowing into the foundation pit permeates the water permeable protection component 10 and is collected in the water storage component 30 under the guidance of the water diversion component 20 comprising the water permeable protection component 10, the input end of the pumping component 40 is communicated with the water storage component 30, the output end of the pumping component 40 extends out of the foundation pit, and water in the foundation pit is drained out of the foundation pit when concreting in the foundation pit, the workability of concrete poured in the foundation pit is ensured.
The pumping and drainage device for pouring concrete comprises a water permeable protection component 10, a water diversion component 20, a water storage component 30 and a pumping component 40, wherein the water permeable protection component 10, the water storage component 30 and the pumping component 40 are arranged on the water diversion component. Through locating diversion subassembly 20 including protection component 10 and water storage component 30 that permeates water in order to collect the water that pours into the foundation ditch from the karst crack in the foundation ditch, take out the water of collecting in water storage component 30 outside the foundation ditch through pumping assembly 40, so as to discharge the water in the foundation ditch and then be convenient for carry out concrete placement to the foundation ditch, the groundwater that will pour from the karst crack in concrete placement's in-process is lasted through pumping assembly 40 simultaneously and is discharged outside the foundation ditch, the concrete of pouring in the foundation ditch can not be diluted by the groundwater that pours into from the karst crack, be favorable to keeping good pouring environment, the workability of concrete can not change, guarantee that the concrete strength reaches design standard water storage component 30 and pumping assembly 40. The water diversion assembly 20 and the water storage assembly 30 are arranged in the foundation pit to collect water bodies gushing into the foundation pit from karst fissures, the water bodies collected in the water storage assembly 30 are pumped out of the foundation pit through the water pumping assembly 40 to discharge the water bodies in the foundation pit so as to facilitate concrete pouring of the foundation pit, meanwhile, underground water gushing from the karst fissures is continuously discharged out of the foundation pit through the water pumping assembly 40 in the concrete pouring process, poured concrete in the foundation pit cannot be diluted by the underground water gushing from the karst fissures, a good pouring environment is favorably kept, the workability of the concrete cannot be changed, and the pouring quality of the concrete is guaranteed; including the protection component 10 and the water storage component 30 of permeating water through leading water subassembly 20 pre-buried in the protection component 10 of permeating water, groundwater that gushes into from the karst crack is collected in water storage component 30 including the protection component 10 of permeating water through leading water subassembly 20, and simultaneously, the protection component 10 of permeating water is regarded as the main support part of the concrete of support pouring in the foundation ditch, be favorable to avoiding pouring the concrete foundation that the back formed and subside, concrete of avoiding pouring in the foundation ditch is pressed and is hindered leading water subassembly 20 and including the protection component 10 of permeating water.
It can be understood that, in the present embodiment, the water diversion assembly 20 includes the water permeable protection assembly 10 and the water permeable protection assembly 10 support the concrete poured in the foundation pit together, so that the water diversion assembly 20 including the water permeable protection assembly 10 is protected by the water permeable protection assembly 10.
Further, the diversion assembly 20 includes that the protection component 10 that permeates water includes that pre-buried diversion branch pipe 21 and the diversion is responsible for 22 in the protection component 10 that permeates water, and the output and the water storage component 30 intercommunication of diversion main pipe 22, the input of diversion main pipe 22 and the output of diversion branch pipe 21 intercommunication, the input of diversion branch pipe 21 is arranged in leading the water in the foundation ditch to lead in the diversion main pipe 22 and then discharge the water to the water storage component 30 through the diversion main pipe 22. It can be understood that the diversion assembly 20 including the permeable protection assembly 10 may be a water storage tank dug at the bottom of the foundation pit or a water storage tank arranged at the bottom of the foundation pit. Optionally, the main water conduit 22 and the main water conduit 22 adopt a PVC draft tube, and the diameter of the PVC draft tube is 110 mm.
Further, the output ends of the water diversion branch pipes 21 are arranged obliquely downwards, and/or the output ends of the water diversion main pipes 22 are arranged obliquely downwards. It can be understood that the water entering the water branch pipe 21 flows into the main water pipe 22 by its own weight through the downward inclined arrangement of the output end of the water branch pipe 21, and the water entering the main water pipe 22 flows into the water storage assembly 30 by its own weight through the downward inclined arrangement of the output end of the main water pipe 22.
Furthermore, the pipe wall of the input end of the water diversion branch pipe 21 is provided with water inlet holes penetrating through the pipe wall, a plurality of water inlet holes are arranged at intervals along the axial direction and/or the circumferential direction of the water diversion branch pipe 21 to form a water inlet hole group, and the water diversion assembly 20 comprises the water permeable protection assembly 10 and further comprises a filter screen 23 which is wound on the input end of the water diversion branch pipe 21 and is used for covering the water inlet holes with a screen. Optionally, a plurality of water inlet holes are arranged at intervals along the circumferential direction of the water diversion branch pipe 21 to form water inlet hole groups, and a plurality of groups of water inlet hole groups are arranged at intervals along the axial direction of the water diversion branch pipe 21. Specifically, 4 water inlets are uniformly arranged on one circle of the circumference of the water diversion branch pipe 21, the interval between every two adjacent circles of water inlets is 200 mm, and the aperture of each water inlet is 10 mm. Through setting up into water punch combination, be convenient for introduce the water to water storage component 30 in from each position of foundation ditch to be convenient for collect the water fast, be favorable to guaranteeing the workability of the concrete of pouring in the foundation ditch.
Optionally, the filter screen 23 is made of geotextile or filter screen.
Further, water storage component 30 locates the middle part of foundation ditch, the diversion is responsible for 22 and is included the relative first person in charge and the second person in charge who lays along the length direction of foundation ditch, diversion branch pipe 21 is responsible for at least one side and the second branch pipe of being responsible for at least one side and being responsible for the intercommunication with the second including locating the first branch pipe that is responsible for at least one side and is responsible for the intercommunication with the first person in charge of first person in charge respectively and locating the second respectively, the output of first person in charge stretches into in water storage component 30 and communicates with water storage component 30, the input of first person in charge communicates with the output of first branch pipe, the output of second person in charge stretches into in water storage component 30 and communicates with water storage component 30, the input of second person in charge communicates with the output of second branch pipe. Alternatively, the water branch pipes 21 include first branch pipes provided on both sides of the first main pipe and communicating with the first main pipe, respectively, and second branch pipes provided on both sides of the second main pipe and communicating with the second main pipe, respectively. In this embodiment, the water storage assembly 30 is disposed in the middle of the foundation pit, and the water diversion branch pipes 21 include first branch pipes disposed on two sides of the first main pipe and communicated with the first main pipe, and second branch pipes disposed on two sides of the second main pipe and communicated with the second main pipe, so as to facilitate rapid introduction of the water in the foundation pit into the water storage assembly 30 from each position of the foundation pit.
Further, the water storage assembly 30 adopts a water storage tank with an opening at the bottom, a containing hole for containing the water storage tank is concavely arranged on the foundation pit, the water storage tank is arranged in the containing hole, the output end of the water diversion main pipe 22 extends to the top of the water storage tank and is communicated with the water storage tank, and the input end of the water pumping assembly 40 extends to the bottom of the water storage tank and is communicated with the water storage tank. An opening is formed in the bottom of the water storage tank and communicated with the karst fissure, so that water in the karst fissure directly enters the water storage tank, and the condition that the water in the karst fissure generates buoyancy to the water storage tank to cause the stress of the water storage tank to influence the stability of the concrete foundation is avoided. Optionally, the water storage tank is welded by using a stainless steel plate with the thickness of 3 mm, and the size of the water storage tank is 450 mm × 650 mm.
Further, the water pumping assembly 40 comprises a water pumping pump 41 and a water draining pipe 42, wherein an input end of the water pumping pump 41 extends to the bottom of the water storage assembly 30 and is communicated with the water storage assembly 30, an output end of the water pumping pump 41 is communicated with an input end of the water draining pipe 42, and an output end of the water draining pipe 42 extends outwards to the outside of the foundation pit. Optionally, in order to prevent the water outside the foundation pit from flowing backward into the foundation pit from the output end of the drainage pipe 42, the output end of the drainage pipe 42 is obliquely arranged upward.
Further, the pumping assembly 40 further includes a plug 43 for plugging the output end of the drainage pipe 42, so as to plug the drainage pipe 42 after the concrete is poured in the foundation pit. Specifically, the plug 43 is made of a wooden plug and a waterproof material, and after the rubble concrete is poured and has strength, the fine aggregate concrete is poured along the drain pipe 42 for plugging, and the end of the output end of the drain pipe 42 is plugged by the wooden plug and then plugged by the waterproof material such as polyurethane and asphalt.
Further, the water permeable protection assembly 10 comprises a first stone protection layer 11 paved at the bottom of the foundation pit and a second stone protection layer 12 paved on the upper portion of the first stone protection layer 11, and the water diversion branch pipe 21 and the water diversion main pipe 22 are pre-buried between the first stone protection layer 11 and the second stone protection layer 12. Optionally, the first stone protection layer 11 and the second stone protection layer 12 are formed by laying stones, the thickness of the first stone protection layer 11 is 50 mm, and the second stone protection layer 12 covers the water diversion assembly 20 and the water permeable protection assembly 10 and then the water diversion assembly 20 and the water permeable protection assembly 1050 mm higher than the water diversion assembly 20.
The utility model also provides a concrete foundation which comprises the pumping and drainage device for the cast concrete, wherein the pumping and drainage device for the cast concrete is pre-embedded in the concrete foundation.
It can be understood that the concrete foundation of the present invention is constructed in the following way: the foundation pit has abundant underground water and large water inflow, drainage ditches are arranged along the periphery of the foundation pit before construction, and a water pump 41 is adopted for drainage to reduce the water level of the foundation pit to be below 300 mm of the bottom of the pit; uniformly paving large stones at the bottom of the foundation pit, wherein the paving thickness is 50 mm, and forming a first stone protection layer 11; arranging the water storage tank in an accommodating hole of the foundation pit, specifically, in the embodiment, arranging the water storage tank in an accommodating hole in the middle of the foundation pit; arranging a water diversion main pipe, cutting off or lengthening the water diversion main pipe according to the actual space of the foundation pit, covering a filter screen 23 on the input end of the water diversion branch pipe with a water inlet hole, laying the water diversion main pipe and the water diversion branch pipe on two sides of the water diversion main pipe, and communicating the water diversion main pipe and the water diversion branch pipe; the water pump 41 is placed in the water storage tank and fixed with the water storage tank; the large rubbles are uniformly spread on the first rubble protection layer 11 and covered with the water diversion assembly 20 comprising the water permeable protection assembly 10 and the water storage assembly 3030 to form a second rubble protection layer 12, the water diversion assembly 20 comprising the water permeable protection assembly 10 is protected from being damaged when rubble concrete is poured through the first rubble protection layer 11 and the second rubble protection layer 12, and the water diversion assembly can serve as a filter layer to prevent large-particle impurities from entering the water diversion branch pipe; and performing rubble concrete pouring, wherein an excavator is adopted to assist in matching construction in the pouring process, the concrete is poured in layers, the concrete is poured firstly, rubbles are placed, underground water which is gushed out from water gushing cracks in the pouring process is discharged, and the concrete workability and the concrete strength are not influenced in the pouring process.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pumping drainage device for concreting is used for pumping drainage for concreting construction of a concrete foundation in a karst fissure geological water burst environment and is characterized in that,
comprises a permeable protection component (10), a water diversion component (20), a water storage component (30) and a water pumping component (40) which are arranged in a foundation pit under a karst fissure geological water burst environment,
the water permeable protection component (10) is supported in a foundation pit, the water diversion component (20) and the water storage component (30) are communicated with each other and are embedded in the water permeable protection component (10) together, so that water flowing into the foundation pit permeates the water permeable protection component (10) and is collected in the water storage component (30) under the guidance of the water diversion component (20),
the input end of the water pumping assembly (40) is communicated with the water storage assembly (30), the output end of the water pumping assembly (40) extends out of the foundation pit, and then a water body in the foundation pit is discharged out of the foundation pit when concrete is poured in the foundation pit, so that the workability of the concrete poured in the foundation pit is guaranteed.
2. The drainage apparatus for casting concrete according to claim 1,
the water diversion assembly (20) comprises a water diversion branch pipe (21) and a water diversion main pipe (22) which are pre-buried in the water permeable protection assembly (10),
the output end of the water diversion main pipe (22) is communicated with the water storage assembly (30), the input end of the water diversion main pipe (22) is communicated with the output end of the water diversion branch pipe (21), and the input end of the water diversion branch pipe (21) is used for leading water in a foundation pit into the water diversion main pipe (22) and then discharging the water into the water storage assembly (30) through the water diversion main pipe (22).
3. The drainage apparatus for casting concrete according to claim 2,
the outlet ends of the water branch pipes (21) are arranged in a downward inclined way, and/or
The output end of the water diversion main pipe (22) is arranged in a downward inclined mode.
4. The drainage apparatus for casting concrete according to claim 2,
the pipe wall of the input end of the water diversion branch pipe (21) is provided with water inlet holes penetrating through the pipe wall, a plurality of water inlet holes are distributed at intervals along the axial direction and/or the circumferential direction of the water diversion branch pipe (21) to form a water inlet hole group,
the water diversion assembly (20) further comprises a filter screen (23) which is wound on the input end of the water diversion branch pipe (21) and used for covering the water inlet hole with a screen.
5. The drainage apparatus for casting concrete according to claim 2,
the water storage component (30) is arranged in the middle of the foundation pit,
the water diversion main pipe (22) comprises a first main pipe and a second main pipe which are oppositely arranged along the length direction of the foundation pit, the water diversion branch pipes (21) comprise first branch pipes which are respectively arranged on at least one side of the first main pipe and communicated with the first main pipe and second branch pipes which are respectively arranged on at least one side of the second main pipe and communicated with the second main pipe,
the output end of the first main pipe extends into the water storage assembly (30) and is communicated with the water storage assembly (30), the input end of the first main pipe is communicated with the output end of the first branch pipe, the output end of the second main pipe extends into the water storage assembly (30) and is communicated with the water storage assembly (30), and the input end of the second main pipe is communicated with the output end of the second branch pipe.
6. The drainage apparatus for casting concrete according to claim 2,
the water storage component (30) adopts a water storage tank with an opening at the bottom, an accommodating hole for accommodating the water storage tank is concavely arranged on the foundation pit, the water storage tank is arranged in the accommodating hole,
the output end of the water diversion main pipe (22) extends to the top of the water storage tank and is communicated with the water storage tank,
the input end of the water pumping component (40) extends to the bottom of the water storage tank and is communicated with the water storage tank.
7. The drainage apparatus for casting concrete according to claim 1,
the water pumping assembly (40) comprises a water pumping pump (41) and a water drainage pipe (42),
the input of suction pump (41) extends to the bottom of water storage component (30) and with water storage component (30) intercommunication, the output of suction pump (41) with the input intercommunication of drain pipe (42), the output of drain pipe (42) outwards extends to outside the foundation ditch.
8. The drainage apparatus for casting concrete according to claim 7,
the water pumping assembly (40) further comprises a plug (43) used for plugging the output end of the drain pipe (42), and then the drain pipe (42) is plugged after concrete is poured in the foundation pit.
9. The drainage apparatus for casting concrete according to claim 2,
the water permeable protection component (10) comprises a first stone protection layer (11) paved at the bottom of a foundation pit and a second stone protection layer (12) paved on the upper part of the first stone protection layer (11),
the water diversion branch pipes (21) and the water diversion main pipe (22) are embedded between the first stone protective layer (11) and the second stone protective layer (12).
10. A concrete foundation is characterized in that,
a cast concrete drainage apparatus as claimed in any one of claims 1 to 9, wherein said drainage apparatus is embedded in said concrete foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121297591.5U CN215669615U (en) | 2021-06-10 | 2021-06-10 | Drainage device for pouring concrete and concrete foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121297591.5U CN215669615U (en) | 2021-06-10 | 2021-06-10 | Drainage device for pouring concrete and concrete foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215669615U true CN215669615U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121297591.5U Active CN215669615U (en) | 2021-06-10 | 2021-06-10 | Drainage device for pouring concrete and concrete foundation |
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| Country | Link |
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| CN (1) | CN215669615U (en) |
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2021
- 2021-06-10 CN CN202121297591.5U patent/CN215669615U/en active Active
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