CN216586628U - Multiple waterproof shutoff structure based on high water level foundation slab precipitation well - Google Patents
Multiple waterproof shutoff structure based on high water level foundation slab precipitation well Download PDFInfo
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- CN216586628U CN216586628U CN202122190402.0U CN202122190402U CN216586628U CN 216586628 U CN216586628 U CN 216586628U CN 202122190402 U CN202122190402 U CN 202122190402U CN 216586628 U CN216586628 U CN 216586628U
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Abstract
The utility model provides a multiple waterproof shutoff structure based on high water level foundation slab precipitation well, including precipitation well, the steel sleeve, sleeve stagnant water structure, the bottom plate bed course, bottom plate stagnant water structure, bottom plate concrete, layering plugging material and top plugging structure, sleeve stagnant water structure includes three stagnant water steel rings, layering plugging material includes by supreme distal end plugging material that is in proper order down, plugging material in near-end plugging material and the sleeve, top plugging structure includes the capping steel sheet and the shutoff stopping that the twice interval set up, the upside of top plugging structure is floated through the upside of leveling layer and bottom plate concrete. The utility model ensures the integrity of the whole foundation slab through the combination of internal defense and external defense, and effectively enhances the waterproof performance of the whole foundation slab.
Description
Technical Field
The utility model belongs to the field of dewatering well waterproof plugging, and particularly relates to a multiple waterproof plugging structure based on a high-water-level foundation slab dewatering well.
Background
In the existing waterproof plugging of the precipitation well, the most common construction steps are generally that a plugging method of pre-installing a waterproof steel sleeve is adopted before pouring bottom plate concrete and precipitation. The principle is that after a water stop ring is welded at the middle part outside a steel sleeve, the waterproof steel sleeve is located at the top of a precipitation well, and then a cushion layer and a waterproof layer are constructed and bottom plate concrete is poured. After dewatering of the dewatering well is completed, fine stone concrete with a grade higher than that of the bottom plate concrete is adopted in the dewatering well and the waterproof steel sleeve, and then the top of the steel sleeve is plugged after the part, higher than the bottom plate, of the steel sleeve is cut off.
In the construction step, firstly, although fine aggregate concrete is adopted in the dewatering well and the waterproof steel sleeve, the total setting time of the fine aggregate concrete is longer; secondly, only one water stop ring is welded at the middle part outside the steel sleeve, and only one water stop measure is easy to cause the leakage of the bottom plate when the underground water pressure is increased. In addition, the top plugging of the steel sleeve is usually only welded by a cover plate, when the water level rises and the underground water pressure increases, the condition of water seepage is easily caused because the welding seam does not reach the standard, the construction period is prolonged, the water leakage treatment difficulty is increased, and the quality and potential safety hazards are left in the subsequent procedures.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multiple waterproof plugging structure based on a high water level foundation base plate dewatering well, and aims to solve the technical problems that firstly, the construction time for setting plugging materials is longer, only one water stopping measure is provided, the base plate leakage is easily caused, and the cover plate welding seam does not reach the standard, so that the water seepage is caused in the existing dewatering well waterproof plugging.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a multiple waterproof plugging structure based on a high water level foundation slab dewatering well comprises a dewatering well, a steel sleeve, a sleeve water stop structure, a slab cushion, a slab water stop structure, slab concrete, a layered plugging material and a top plugging structure,
the dewatering well is positioned in a soil layer below the bottom plate, the sleeve water stop structure comprises three horizontal water stop steel rings fixedly connected to the surface of the outer wall of the steel sleeve, and the three water stop steel rings are respectively a bottom ring, a middle ring and a top ring, the bottom ring is positioned at the lower part of the steel sleeve, the lower side surface of the bottom ring is flush with the lower side surface of the steel sleeve, the middle ring is positioned in the middle of the steel sleeve, the top ring is positioned at the upper part of the steel sleeve,
the height of the steel sleeve is equal to the thickness of the bottom plate concrete, the lower side surface of the steel sleeve is vertically arranged on the upper side surface of the dewatering well, the inner diameters of the steel sleeve and the dewatering well are adaptive and opposite, the lower side surface of the bottom ring is tightly attached to a soil layer around the top of the dewatering well,
the bottom plate cushion layer is paved to the outer wall of the bottom of the steel sleeve through the upper side surface of the bottom ring,
the bottom plate water stop structure comprises a waterproof layer and a closed-end sealed inner corner, the waterproof layer is laid from the upper side surface of the bottom plate cushion layer to the outer wall of the steel sleeve and is upwards reversely adhered along the outer wall, the closed-end sealed inner corner is arranged at the position of the reverse-adhered inner corner of the waterproof layer for a circle,
the bottom plate concrete is paved to the outer wall of the steel sleeve from the upper side surface of the waterproof layer, wherein the middle ring and the top ring are embedded into the bottom plate concrete,
the layered plugging material comprises a far-end plugging material, a near-end plugging material and a sleeve inner plugging material from bottom to top in sequence, the filling range of the far-end plugging material is in a precipitation well below the fixed height of a bottom plate cushion layer, the filling range of the near-end plugging material is in the precipitation well from above the fixed height of the bottom plate cushion layer to the lower side of the bottom plate cushion layer, the filling range of the plugging material in the sleeve is in the sleeve including the range of bottom plate concrete, a top plugging operation space is reserved between the upper side of the plugging material in the sleeve and the top end of a steel sleeve,
the top block structure is located top shutoff operation space, including the sealed steel sheet and the top sealing filler that twice interval set up, the sealed steel sheet all around with the inner wall sealing fixed connection of steel sleeve, the top sealing steel sheet includes steel sheet and the top sealing steel sheet under the top sealing, the downside of sealing material top sealing steel sheet in the sleeve is hugged closely to the downside of steel sheet under the top sealing, the upside of top sealing filler shutoff steel sheet under the top sealing, the top sealing filler is hugged closely to the downside of top sealing steel sheet, the upside of top block structure is smeared through the upside of leveling layer and bottom plate concrete.
The far-end plugging material is sand.
The near-end plugging material is fine aggregate concrete.
The blocking material in the sleeve is micro-expansion quick-setting concrete.
The waterproof layer is a waterproof coiled material, and the sealed closed inner corners are made of polymer cement mortar.
The fixed height is 2-2.5 m.
The capping filler is bentonite.
The top plugging structure further comprises a capping cover plate located above the capping upper steel plate, the periphery of the capping cover plate is also fixedly connected with the inner wall of the steel sleeve in a sealing mode, a capping space is reserved between the capping cover plate and the capping upper steel plate, a flow guide pipe is arranged on the capping cover plate, and capping coagulation slurry guided from the flow guide pipe is filled in the capping space.
Compared with the prior art, the utility model has the following characteristics and beneficial effects:
the utility model ensures the integrity of the whole foundation slab through the combination of internal defense and external defense, and effectively enhances the waterproof performance of the whole foundation slab.
Firstly, the plugging material is designed in a layered mode, the dewatering well part which is 2 meters away from the bottom plate cushion layer is plugged and filled with sand stones, the part which is 2 meters away from the bottom plate cushion layer is plugged and filled with fine aggregate concrete, the bottom plate cushion layer and the inner sides of the steel sleeves are filled with micro-expansion quick-setting concrete, and the setting time of the plugging material is shortened. And secondly, three water stop steel rings are designed outside the steel sleeve in the range of the bottom plate to prevent the soil layer with larger water content at the bottom from upwards seeping water. And thirdly, two top plate plugs and bentonite are designed at the top for filling in a combined mode, and the top is guaranteed not to seep water under the action of water pressure. Meanwhile, a steel sleeve top cover can be continuously added on the top, a hole is formed in the top cover to install the flow guide pipe, and grouting is performed between the top cover and the upper-layer top plate for further plugging. The whole plugging performance is greatly improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Reference numerals: 1-dewatering well, 2-steel sleeve, 3-bottom plate cushion layer, 4-bottom plate concrete, 5-soil layer, 6-bottom ring, 7-middle ring, 8-top ring, 9-waterproof layer, 10-internal corner sealing and closing up, 11-far end plugging material, 12-near end plugging material, 13-internal sleeve plugging material, 14-fixed height, 15-top sealing filler, 16-top sealing lower steel plate, 17-top sealing upper steel plate, 18-leveling layer, 19-top sealing cover plate, 20-guide pipe and 21-top sealing setting slurry.
Detailed Description
First embodiment referring to fig. 1, a multiple waterproof plugging structure based on a high water level foundation slab dewatering well comprises a dewatering well 1, a steel sleeve 2, a sleeve water stop structure, a slab cushion layer 3, a slab water stop structure, slab concrete 4, a layered plugging material and a top plugging structure.
The height of the steel sleeve 2 is larger than the thickness of the bottom plate concrete 4 during installation, and the top is cut flatly after plugging so that the height of the top is the same as the thickness of the bottom plate concrete. The lower side surface of the steel sleeve 2 vertically falls on the upper side surface of the dewatering well 1, the inner diameters of the lower side surface and the upper side surface are adapted and right opposite, and the lower side surface of the bottom ring 6 is tightly attached to the soil layer around the top of the dewatering well 1.
In the embodiment, the diameter of the steel sleeve is 400mm, the thickness of the sleeve wall is 4mm, and the sleeve wall is 50mm higher than the upper side of the bottom plate concrete.
The bottom plate cushion layer 3 is paved to the outer wall of the bottom of the steel sleeve 2 through the upper side surface of the bottom ring 6. In the embodiment, the bottom plate cushion layer is a C15 concrete cushion layer with the thickness of 100 mm.
The bottom plate sealing structure comprises a waterproof layer 9 and a closed-end sealed opening 10 of an internal corner, the waterproof layer 9 is laid on the outer wall of the steel sleeve 2 from the upper side surface of the bottom plate cushion layer 3 and is upwards reversely adhered along the outer wall, and the closed-end sealed opening 10 of the internal corner is arranged at the position of the reverse-adhered internal corner of the waterproof layer 9 for a circle.
In this embodiment, the three water stop steel rings are made of steel plates with a thickness of 4mm, the width of each ring body is 250mm, the setting distance between the middle ring 7 and the waterproof layer 9 is not less than 150mm, the setting distance between the top ring 8 and the top surface of the steel sleeve 2 is not less than 150mm, and the setting distance between the middle ring 7 and the top ring 8 is 300 mm. The waterproof layer 9 is a waterproof coiled material, and the internal corner sealing opening 10 is polymer cement mortar.
The bottom plate concrete 4 is laid to the outer wall of the steel sleeve 2 from the upper side surface of the waterproof layer 9, wherein the middle ring 7 and the top ring 8 are buried in the bottom plate concrete 4.
The layered plugging material comprises a far-end plugging material 11, a near-end plugging material 12 and a sleeve inner plugging material 13 from bottom to top in sequence, the filling range of the far-end plugging material 11 is from the bottom plate cushion layer 3 to the interior of a precipitation well 1 below a fixed height 14, the filling range of the near-end plugging material 12 is from the bottom plate cushion layer 3 to the interior of the precipitation well 1 above the fixed height 14 to the lower side of the bottom plate cushion layer 3, the filling range of the sleeve inner plugging material 13 is in the sleeve including a bottom plate concrete 4 range, and a top plugging operation space is reserved between the upper side of the sleeve inner plugging material 13 and the top end of a steel sleeve 2.
In this embodiment, the distal plugging material 11 is 1: 1 sand and stone. The proximal plugging material 12 is C25 fine aggregate concrete. The plugging material 13 in the sleeve is C35P10 micro-expansion quick-setting concrete. The fixed height 14 is 2 meters.
The top block structure is located top shutoff operation space, including the capping steel sheet and the capping filler 15 that twice interval set up, the capping steel sheet around with the inner wall sealing fixed connection of steel sleeve 2, the capping steel sheet includes steel sheet 16 and the capping steel sheet 17 down of capping, the downside of steel sheet 16 is hugged closely down to the capping in the sleeve plugging material 13 downside of capping down, the upside of steel sheet 16 is down being capped in the capping of capping filler 15 shutoff, the capping filler 15 is hugged closely to the downside of steel sheet 17 on the capping, the upside of top block structure is smeared through the upside of smearing layer 18 and bottom plate concrete.
In this embodiment, the capping filler 15 is bentonite. The capping steel plate is 4mm thick and is fully welded with the inner wall of the steel sleeve.
The second embodiment is shown in fig. 2, and is different from the first embodiment in that the top plugging structure further includes a capping cover plate 19 located above the capping upper steel plate 17, the periphery of the capping cover plate 19 is also fixedly connected with the inner wall of the steel sleeve 2 in a sealing manner, a capping space is reserved between the capping cover plate 19 and the capping upper steel plate 17, a draft tube 20 is arranged on the capping cover plate 19, and capping setting mortar 21 introduced from the draft tube 20 is filled in the capping space.
In this embodiment, the capping setting mortar 21 may have three types, which are a first mortar, a second mortar and a third mortar, where the first mortar is a mixed mortar of cement and water, the second mortar is a mixed mortar of water glass, cement and water, and the mixed mortar of water glass and cement is 1: 1; the third slurry is mixed slurry of phosphoric acid, water glass and water. Phosphoric acid and water glass 1: 1.
the construction steps of the multiple waterproof plugging structure based on the high water level foundation slab dewatering well are as follows:
step one, starting dewatering and drainage work of a dewatering well 7 days before foundation trench excavation is carried out on earth, ensuring that the water level is always 0.8-1.0 m lower than the surface of the foundation trench, continuing the dewatering work until the bottom plate construction is finished, and prefabricating and processing a steel sleeve in a project.
And step two, when the earthwork is excavated to the foundation trench, the steel sleeve 2 is placed on the upper side of the well wall of the dewatering well 1, and then the bottom ring 6 is in seamless contact with the soil layer 5 with larger water content.
And step three, after the steel sleeve 2 is fixed, pouring a bottom plate cushion layer 3.
And fourthly, after the construction of the bottom plate cushion layer 3 is completed, pre-paving the anti-sticking waterproof coiled material on the upper side, and sealing and closing the periphery of the steel sleeve by adopting polymer cement mortar.
And fifthly, binding the reinforcing steel bars of the bottom plate and pouring the concrete of the bottom plate, and starting a well sealing procedure of the dewatering well after pouring is finished.
And step six, filling the layered plugging materials in the dewatering well and the steel sleeve according to the design, and reserving the plugging materials 13 in the sleeve without construction.
And step seven, the steel sleeve part of the bottom plate concrete is higher than the steel sleeve part of the bottom plate concrete, the steel sleeve part and the bottom plate concrete are cut flat before the top plugging structure is constructed, and then the plugging material 13 in the sleeve and the top plugging structure are constructed.
And step eight, dismantling the flow guide pipe and plugging the pipe orifice, and then floating the upper side of the top plugging structure and the upper side of the bottom plate concrete.
Claims (8)
1. The utility model provides a multiple waterproof shutoff structure based on high water level foundation slab precipitation well which characterized in that: comprises a precipitation well (1), a steel sleeve (2), a sleeve water stop structure, a bottom plate cushion layer (3), a bottom plate water stop structure, bottom plate concrete (4), a layered plugging material and a top plugging structure,
the dewatering well (1) is positioned in a soil layer (5) below the bottom plate, the sleeve water stop structure comprises three horizontal water stop steel rings fixedly connected to the surface of the outer wall of the steel sleeve (2), and a bottom ring (6), a middle ring (7) and a top ring (8) respectively, the bottom ring (6) is positioned at the lower part of the steel sleeve (2), the lower side surface of the bottom ring is flush with the lower side surface of the steel sleeve (2), the middle ring (7) is positioned in the middle of the steel sleeve (2), the top ring (8) is positioned at the upper part of the steel sleeve (2),
the height of the steel sleeve (2) is equal to the thickness of the bottom plate concrete (4), the lower side surface of the steel sleeve (2) vertically falls on the upper side surface of the dewatering well (1), the inner diameters of the steel sleeve and the dewatering well are adapted and are opposite, the lower side surface of the bottom ring (6) is tightly attached to a soil layer around the top of the dewatering well (1),
the bottom plate cushion layer (3) is paved to the outer wall of the bottom of the steel sleeve (2) through the upper side surface of the bottom ring (6),
the bottom plate water stop structure comprises a waterproof layer (9) and a sealed internal corner closing-up (10), the waterproof layer (9) is laid on the outer wall of the steel sleeve (2) from the upper side surface of the bottom plate cushion layer (3) and is upwards reversely adhered along the outer wall, the sealed internal corner closing-up (10) is arranged on the position of the reverse-adhered internal corner of the waterproof layer (9) for a circle,
the bottom plate concrete (4) is paved to the outer wall of the steel sleeve (2) from the upper side surface of the waterproof layer (9), wherein the middle ring (7) and the top ring (8) are embedded in the bottom plate concrete (4),
the layered plugging material comprises a far-end plugging material (11), a near-end plugging material (12) and a sleeve inner plugging material (13) from bottom to top, the filling range of the far-end plugging material (11) is from the bottom plate cushion (3) in the precipitation well (1) below the fixed height (14), the filling range of the near-end plugging material (12) is from the bottom plate cushion (3) above the fixed height (14) to the precipitation well (1) at the lower side of the bottom plate cushion (3), the filling range of the sleeve inner plugging material (13) is in the sleeve including the bottom plate concrete (4), a top plugging operation space is reserved between the upper side of the sleeve inner plugging material (13) and the top end of the steel sleeve (2),
the top block structure is located top shutoff operation space, including the capping steel sheet and the capping filler (15) that the twice interval set up, the capping steel sheet all around with the inner wall sealing fixed connection of steel sleeve (2), the capping steel sheet includes steel sheet (16) and capping steel sheet (17) down, the downside of steel sheet (16) is hugged closely the downside of blocking material (13) capping steel sheet (16) in the sleeve down under the capping, the upside of steel sheet (16) is down in the capping in capping filler (15) shutoff, capping filler (15) are hugged closely to the downside of capping steel sheet (17), the upside of top block structure is floated through the upside of leveling layer (18) and bottom plate concrete.
2. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the far-end plugging material (11) is sand.
3. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the near-end plugging material (12) is fine aggregate concrete.
4. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the blocking material (13) in the sleeve is micro-expansion quick-setting concrete.
5. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the waterproof layer (9) is a waterproof coiled material, and the internal corner sealing opening (10) is polymer cement mortar.
6. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the fixed height (14) is 2-2.5 m.
7. The multiple waterproof plugging structure based on high water level foundation slab dewatering well of claim 1, characterized in that: the capping filler (15) is bentonite.
8. The multiple waterproof plugging structure based on high water level foundation slab dewatering well according to any one of claims 1-7, characterized in that: the top plugging structure further comprises a top sealing cover plate (19) located above the top sealing steel plate (17), the periphery of the top sealing cover plate (19) is fixedly connected with the inner wall of the steel sleeve (2) in a sealing mode, a top sealing space is reserved between the top sealing cover plate (19) and the top sealing upper steel plate (17), a guide pipe (20) is arranged on the top sealing cover plate (19), and the top sealing space is filled with top sealing coagulation slurry (21) guided from the guide pipe (20).
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| CN202122190402.0U CN216586628U (en) | 2021-09-10 | 2021-09-10 | Multiple waterproof shutoff structure based on high water level foundation slab precipitation well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110560A (en) * | 2022-07-28 | 2022-09-27 | 中国十七冶集团有限公司 | Large basement dewatering well plugging method |
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- 2021-09-10 CN CN202122190402.0U patent/CN216586628U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110560A (en) * | 2022-07-28 | 2022-09-27 | 中国十七冶集团有限公司 | Large basement dewatering well plugging method |
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