CN217438983U - Deep basal pit high water pressure drop well block structure - Google Patents
Deep basal pit high water pressure drop well block structure Download PDFInfo
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- CN217438983U CN217438983U CN202221401177.9U CN202221401177U CN217438983U CN 217438983 U CN217438983 U CN 217438983U CN 202221401177 U CN202221401177 U CN 202221401177U CN 217438983 U CN217438983 U CN 217438983U
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Abstract
The utility model relates to the technical field of deep foundation pit construction of buildings, in particular to a plugging structure of a deep foundation pit high water pressure drop water well; the plugging structure of the deep foundation pit high-water-pressure-drop well comprises a concrete cushion layer, a waterproof steel sleeve base, a waterproof layer, a waterproof protective layer, a reinforced concrete bottom plate, a waterproof steel sleeve, a first steel plate outer water stop ring, a second steel plate outer water stop ring, a steel plate inner water stop ring, a water stop cushion, a plugging steel plate and an expansion concrete layer; the steel plate inner water stop ring is arranged at a position 50mm-100mm downward from the inner side of the pipe orifice of the waterproof steel sleeve, and a water stop pad, a plugging steel plate and an expanded concrete layer are sequentially arranged above the steel plate inner water stop ring; compare with traditional precipitation well block structure, this application has advantages such as convenient operation, economic environmental protection, construction period is short, the antiseep is effectual, gets the large tracts of land popularization in deep basal pit precipitation well block construction median.
Description
Technical Field
The utility model relates to a deep foundation ditch construction technical field of building especially relates to a deep foundation ditch high water pressure drop well block structure.
Background
With the rapid development of the building industry, high-rise and super high-rise buildings are more and more, and deep foundation pit dewatering is more and more common. After the underground structure and the ground structure are constructed, the basement house and the foundation pit need to be backfilled, and the dewatering well needs to be plugged before backfilling. The conventional method is that a waterproof steel sleeve is placed at the wellhead of a precipitation well before a concrete cushion is poured, then gravel and sand are backfilled in the precipitation well, and finally 2m of backfilled micro-expansion fine-stone concrete is reserved, and construction is finished when the construction ground is made. If the concrete is not vibrated compactly when the dewatering well is backfilled, the water pressure is high after the dewatering underground water level is stopped rising, the bottom plate is easy to leak, the soil at the center of a room backfilled by the basement is soaked in water, the basement surface layer cannot be constructed, and the construction period is delayed. The constructed surface layer causes the quality problems of surface layer bulging, cracking and sinking, and similar problems not only cause the construction period lag and the maintenance difficulty to be large, but also increase the economic investment.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, the utility model provides a deep basal pit high water pressure drop well block structure, this structure have convenient operation, economic environmental protection, construction period short, the antiseep advantage such as effectual, are worth the large tracts of land and promote in deep basal pit high water pressure drop well block construction.
The utility model adopts the technical proposal that:
a plugging structure for a deep foundation pit high-water-pressure-drop well comprises a concrete cushion layer, a waterproof steel sleeve base, a waterproof layer, a waterproof protective layer, a reinforced concrete bottom plate, a waterproof steel sleeve, a first steel plate outer water stop ring, a second steel plate outer water stop ring, a steel plate inner water stop ring, a water stop cushion, a plugging steel plate and an expansion concrete layer; set gradually in the top on precipitation well earthwork layer concrete bed course, waterproof layer, water proof coating and reinforced concrete bottom plate, waterproof steel casing base set up precipitation well earthwork layer with the juncture of concrete bed course the outside of waterproof steel casing's middle part sets up first outer seal ring of steel sheet and the outer seal ring of second way steel sheet, the outer seal ring of first way steel sheet sets up the top of the outer seal ring of second way steel sheet, the seal ring sets up in the steel sheet inside the mouth of pipe of waterproof steel casing downwards 50mm-100mm department the top of seal ring sets gradually sealing pad, shutoff steel sheet and expanded concrete layer in the steel sheet.
Preferably, the height of the waterproof steel sleeve is not less than the sum of the thicknesses of the concrete cushion layer and the reinforced concrete bottom plate.
Preferably, the distance between the first outer water stop ring of the steel plate and the second outer water stop ring of the steel plate is 80-120 mm.
Preferably, the inner water stop ring of the steel plate is arranged above the outer water stop ring of the first steel plate.
Preferably, the water stop pad is made of rubber.
Preferably, the thickness of the plugging steel plate is 9mm-11 mm.
Preferably, the steel plate inner water stop ring, the water stop pad and the plugging steel plate are connected through a locking piece.
Preferably, the locking member comprises a bolt and a nut, the bolt is welded on the inner water stop ring of the steel plate, and the head of the bolt is close to the outer water stop ring of the first steel plate.
The utility model discloses beneficial technological effect is:
compare with traditional precipitation well block structure, this structure has advantages such as convenient operation, economic environmental protection, construction period are short, antiseep is effectual, gets the large tracts of land popularization in deep basal pit precipitation well block construction median.
Drawings
Fig. 1 is an overall schematic diagram of the dewatering well after plugging.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Description of reference numerals: 1. a concrete cushion; 2. a waterproof steel sleeve base; 3. a waterproof layer; 4. a waterproof protective layer; 5. a reinforced concrete floor; 6. a waterproof steel sleeve; 7. a first steel plate outer water stop ring; 8. a second steel plate outer water stop ring; 9. a water stop ring in the steel plate; 10. a water stop pad; 11. plugging a steel plate; 12. and (3) expanding the concrete layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-2.
The embodiment of the utility model discloses deep basal pit high water pressure drop well block structure. Referring to fig. 1 and 2, the plugging structure of the deep foundation pit high water pressure drop well comprises a concrete cushion layer 1, a waterproof steel sleeve base 2, a waterproof layer 3, a waterproof protective layer 4, a reinforced concrete bottom plate 5, a waterproof steel sleeve 6, a first steel plate outer water stop ring 7, a second steel plate outer water stop ring 8, a steel plate inner water stop ring 9, a water stop pad 10, a plugging steel plate 11 and an expanded concrete layer 12; after the dewatering well is drilled, a constructor places a concrete sand-free pipe in the dewatering well, the periphery of the concrete sand-free pipe is wrapped with a sand filtering net, fine sand is prevented from blocking the concrete sand-free pipe, then a dewatering pump is placed to start dewatering, the earthwork at the periphery of the dewatering well is excavated to the bottom of a concrete cushion layer 1 while the dewatering is not stopped, a waterproof steel sleeve 6 is placed before the concrete cushion layer 1 is poured, the waterproof steel sleeve 6 is made of a hot-rolled seamless steel pipe, and the waterproof steel sleeve base 2 is arranged at the junction of the concrete cushion layer 1 and the dewatering well; a concrete cushion layer 1, a waterproof layer 3, a waterproof protective layer 4 and a reinforced concrete bottom plate 5 are sequentially arranged above the earth layer of the dewatering well; the outer side of the middle part of the waterproof steel sleeve 6 is provided with a first steel plate outer water stop ring 7 and a second steel plate outer water stop ring 8, the first steel plate outer water stop ring 7 is arranged above the second steel plate outer water stop ring 8, the outer diameter of the two steel plate outer water stop rings is 650mm, the thickness of the two steel plate outer water stop rings is 6mm, the position of the two steel plate outer water stop rings is roughly positioned in the middle of the thickness of the reinforced concrete bottom plate 5, and when the waterproof layer 3 is used, the periphery of the dewatering well is waterproof and upturned to the first steel plate outer water stop ring 7 and is waterproof and closed, and underground water upturning can be blocked; the steel plate inner water stop ring 9 is arranged at the position 50mm-100mm downward from the inner side of the pipe orifice of the waterproof steel sleeve 6 and is positioned above the first steel plate outer water stop ring 7, the practical distance which can be operated by constructors is met, and a dewatering well is conveniently closed; after the underground structure and the ground structure are constructed, a constructor removes the dewatering pump, gravels and grouting materials are backfilled in the dewatering well until the gravels and the grouting materials are flush with the water stop ring 9 in the steel plate, and a water stop pad 10, a plugging steel plate 11 and an expansion concrete layer 12 are sequentially arranged above the water stop ring 9 in the steel plate.
It will be appreciated that the height of the waterproof steel casing 6 is no less than the sum of the thicknesses of the reinforced concrete floor 5 and the concrete underlayment 1, that is, the height of the waterproof steel casing 6 is determined according to the sum of the thicknesses of the concrete underlayment 1 and the reinforced concrete floor 5.
Further, the distance between the first outer water stop ring 7 of the steel plate and the second outer water stop ring 8 of the steel plate is 80mm-120 mm.
In order to enhance the sealing effect, the water stop pad 10 is made of rubber.
The thickness of the plugging steel plate 11 is 9mm-11mm according to the actual construction situation.
It can be understood that the water stop ring 9, the water stop pad 10 and the plugging steel plate 11 in the steel plate are connected through the locking piece, the locking piece comprises a bolt and a nut, the bolt is welded on the water stop ring in the steel plate, the head of the bolt is close to the outer water stop ring of the first steel plate, and after the gravel and the grouting material are backfilled in the precipitation well, the water stop ring 9, the water stop pad 10 and the plugging steel plate 11 in the steel plate are connected.
Compared with the traditional dewatering well plugging structure, the structure has the advantages of convenience in operation, economy, environmental protection, short construction period, good anti-seepage effect and the like, and can be popularized in a large area in the deep foundation pit dewatering well plugging construction.
Above only the utility model discloses a preferred embodiment, the utility model discloses a scope not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a deep basal pit high water pressure drop well block structure which characterized in that: the waterproof steel pipe comprises a concrete cushion layer (1), a waterproof steel sleeve base (2), a waterproof layer (3), a waterproof protective layer (4), a reinforced concrete bottom plate (5), a waterproof steel sleeve (6), a first steel plate outer water stop ring (7), a second steel plate outer water stop ring (8), a steel plate inner water stop ring (9), a water stop pad (10), a plugging steel plate (11) and an expanded concrete layer (12); set gradually in the top on precipitation well earthwork layer concrete bed (1), waterproof layer (3), water proof layer (4) and reinforced concrete bottom plate (5), waterproof steel casing base (2) set up in precipitation well earthwork layer with the juncture of concrete bed (1) the outside of the middle part of waterproof steel casing (6) sets up first outer seal ring of steel sheet (7) and second way outer seal ring of steel sheet (8), first outer seal ring of steel sheet (7) set up the top of the outer seal ring of steel sheet of second way (8), seal ring (9) set up in the mouth of pipe of waterproof steel casing (6) inside 50mm-100mm department down the top of seal ring (9) sets gradually seal pad (10), shutoff steel sheet (11) and expanded concrete layer (12) in the steel sheet.
2. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: the height of the waterproof steel sleeve (6) is not less than the sum of the thicknesses of the concrete cushion layer (1) and the reinforced concrete bottom plate (5).
3. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: the distance between the first steel plate outer water stop ring (7) and the second steel plate outer water stop ring (8) is 80-120 mm.
4. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: the inner water stop ring (9) of the steel plate is arranged above the outer water stop ring (7) of the first steel plate.
5. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: the water stop pad (10) is made of rubber.
6. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: the thickness of the plugging steel plate (11) is 9mm-11 mm.
7. The deep foundation pit high water pressure drop well block structure of claim 1, characterized in that: and the water stop ring (9), the water stop pad (10) and the plugging steel plate (11) in the steel plate are connected through locking pieces.
8. The deep foundation pit high water pressure drop well block structure of claim 7, characterized in that: the locking piece comprises a bolt and a nut, the bolt is welded on the inner water stop ring (9) of the steel plate, and the head of the bolt is close to the outer water stop ring (7) of the first steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221401177.9U CN217438983U (en) | 2022-06-07 | 2022-06-07 | Deep basal pit high water pressure drop well block structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221401177.9U CN217438983U (en) | 2022-06-07 | 2022-06-07 | Deep basal pit high water pressure drop well block structure |
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| CN217438983U true CN217438983U (en) | 2022-09-16 |
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| CN202221401177.9U Active CN217438983U (en) | 2022-06-07 | 2022-06-07 | Deep basal pit high water pressure drop well block structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434350A (en) * | 2022-10-09 | 2022-12-06 | 深圳市市政工程总公司 | Method for treating water gushing and sand gushing of deep foundation pit bottom plate of subway station |
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2022
- 2022-06-07 CN CN202221401177.9U patent/CN217438983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434350A (en) * | 2022-10-09 | 2022-12-06 | 深圳市市政工程总公司 | Method for treating water gushing and sand gushing of deep foundation pit bottom plate of subway station |
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