CN115573373A - Plugging device and method for underground concrete permeable wall - Google Patents
Plugging device and method for underground concrete permeable wall Download PDFInfo
- Publication number
- CN115573373A CN115573373A CN202211292885.8A CN202211292885A CN115573373A CN 115573373 A CN115573373 A CN 115573373A CN 202211292885 A CN202211292885 A CN 202211292885A CN 115573373 A CN115573373 A CN 115573373A
- Authority
- CN
- China
- Prior art keywords
- plugging
- wall body
- grouting
- underground concrete
- guide pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 41
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000011440 grout Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 239000004576 sand Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
- E02D19/185—Joints between sheets constituting the sealing aprons
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a plugging device and method for an underground concrete permeable wall. The invention carries out preliminary plugging on the leakage position through the plugging plate, carries out drainage and grouting operation through the diversion action of the diversion pipe, has simple structure and convenient construction, effectively ensures the high efficiency and timeliness when treating serious leakage of the underground concrete wall, prevents the envelope structure from being damaged and the surrounding from sinking due to overlarge water seepage amount and sand gushing amount, has the advantages of simple process and easy operation and lower cost, and can be widely applied to plugging serious leakage of the underground concrete wall.
Description
Technical Field
The invention relates to the field of foundation pit engineering, in particular to a plugging device and a plugging method for an underground concrete permeable wall.
Background
With the continuous development of Chinese economy in recent years, the traffic is more convenient and efficient, the subway engineering construction in China is also continuously developed, and the quality of the enclosure structure in the foundation pit excavation construction process is directly related to the safety of the surrounding environment of the whole foundation pit construction machine. Due to the influence of various factors in the construction process, the enclosure structure generally has certain leakage conditions after the construction is finished, but the problem of water leakage is the most common in the construction of underground concrete wall foundation pits of subways, so that the construction of the next step is greatly difficult, silent benefits of enterprises and the like are greatly lost, and the safe operation of the subways which are related to collapse accidents and seriously damaged is easily caused.
Disclosure of Invention
The invention aims to provide a plugging device and a plugging method for an underground concrete permeable wall body, which are used for effectively plugging the concrete wall body leakage part.
The technical scheme adopted by the invention for solving the technical problems is as follows: the plugging device for the underground concrete permeable wall comprises a flow guide grouting pipe, a plugging flow guide steel plate and a grouting device, wherein the plugging flow guide steel plate is fixedly arranged at the wall where a leakage part is located; a valve switch is arranged on one side of the diversion grouting pipe, which is far away from the wall body; when grouting, the grout outlet of the grouting device is connected with the outer port of the diversion grouting pipe.
Further, the method comprises the following steps: the plugging diversion steel plate is fixed on the wall body through expansion bolts.
Further, the method comprises the following steps: the sealing structure comprises water-swellable rubber arranged around the edge of the plugging diversion steel plate.
Further, the method comprises the following steps: the diameter of the through hole of the plugging diversion steel plate is 25-35 mm.
The invention also adopts a technical scheme for solving the technical problem that: the plugging method for the underground concrete permeable wall body is implemented according to the plugging device for the underground concrete permeable wall body, and comprises the following steps of:
s1: determining the position of a leakage point: cleaning the wall surface at the leakage position to expose the concrete surface, and determining the leakage point position according to the water outlet position of the wall surface;
s2: installing a plugging device: fixedly installing a plugging flow guide steel plate on a wall body at a leakage position, inserting a flow guide grouting pipe into the leakage position of the wall body through a through hole of the plugging flow guide steel plate, welding the flow guide grouting pipe and the plugging flow guide steel plate, arranging a mounting valve switch at the outer end part of the flow guide grouting pipe, and then performing edge sealing treatment on the prefabricated plugging steel plate;
s3: grouting: after the plugging device is installed, a valve is opened to perform drainage operation, after the drainage operation is completed, a diversion grouting pipe is externally connected with a grouting device, and then a leakage space in a wall leakage position is filled through grouting to realize plugging;
s4: and (3) sealing: and after grouting is finished, disassembling a valve switch on the flow guide grouting pipe, and sealing the flow guide grouting pipe.
Further, the method comprises the following steps: s2, inserting an insertion end of the diversion grouting pipe into a soil body on the outer side of the wall body by 8-20 mm; and S3, forming a protruding structure on the outer side of the wall body by the injected grout.
Further, the method comprises the following steps: s2, arranging two edge sealing layers between the edge of the prefabricated plugging steel plate and the wall, wherein an inner edge sealing layer is arranged firstly, and then an outer edge sealing layer is arranged; the inner edge sealing layer is a mixture of the veil and the grease, and the outer edge sealing layer is made of water-swelling rubber.
Further, the method comprises the following steps: and in S3, the slurry for grouting comprises cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 1.8-2.2.
Further, the method comprises the following steps: and S4, connecting the outer port of the diversion grouting pipe with the outer port of the diversion grouting pipe through a flange bolt, wherein the strength grade of the flange bolt is 8.5-9.0.
Further, the method comprises the following steps: and S4, after the diversion grouting pipe is sealed, polyurethane is laid on the outer side of the connection part of the diversion grouting pipe and the flange bolt.
The beneficial effects of the invention are: the device has simple structure and convenient construction, effectively ensures the high efficiency and timeliness when the serious leakage of the underground concrete wall is treated, prevents the envelope structure from being damaged and the periphery from sinking due to overlarge seepage amount and sand gushing amount, has the advantages of simple process and easy operation, and can be widely applied to the plugging of the serious leakage of the underground concrete wall.
Drawings
FIG. 1 is a front view of a structure provided by an embodiment of the invention before grouting plugging;
FIG. 2 is a cross-sectional view of a structure before grouting plugging provided by an embodiment of the invention;
FIG. 3 is a cross-sectional view of a structure after grouting plugging according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a structure after grouting plugging according to an embodiment of the present invention;
description of reference numerals: a wall body 1; an outer edge sealing layer 2; an inner sealing layer 3; a plugging plate 4; a valve switch 5; a protruding structure 6; a draft tube 7; a leak point 8; an expansion bolt 9; a polyurethane 10; flange bolts 11.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1 to 4, the plugging device for an underground concrete permeable wall according to the present invention includes a flow guide pipe 7, a plugging plate 4 and a grouting device, wherein the plugging plate 4 is fixedly disposed on the wall 1 where a leakage part is located, a through hole is formed in the middle of the plugging plate 4, the flow guide pipe 7 is disposed in the through hole and fixedly connected with the plugging plate 4, and a sealing structure is disposed between the edge of the plugging plate 4 and the wall 1; a valve switch 5 is arranged on one side of the draft tube 7 away from the wall 1; when grouting, the grout outlet of the grouting device is connected with the outer port of the draft tube 7. According to the plugging device, a leakage part is preliminarily plugged through the plugging plate 4, and drainage and grouting operations are performed through the diversion effect of the diversion pipe 7; the device has simple structure, convenient operation and convenient construction, effectively ensures the high efficiency and timeliness when the serious leakage of the underground concrete wall is treated, and prevents the building envelope from being damaged and the surrounding from sinking due to overlarge seepage and sand gushing.
Specifically, the plugging plate 4 is fixed on the wall body 1 through the expansion bolts 9, so that the installation is convenient, and the plugging plate 4 is firmly fixed.
Specifically, seal structure can expand by oneself after meeting water including encircleing 4 border settings of shutoff board chance water inflation rubber, makes it inseparabler with concrete contact, further improves the stagnant water effect.
Specifically, the diameter of the through hole of the plugging plate 4 is 25 mm-35 mm, and the size of the flow guide pipe 7 is correspondingly arranged.
The invention relates to a plugging method for an underground concrete permeable wall, which is implemented according to the plugging device for the underground concrete permeable wall and comprises the following steps:
s1: determining the position of a leakage point 8: cleaning moss, weeds or other covering impurities and the like on the surface of the wall body 1 at the leakage position to expose the surface of the concrete, and determining the position of a leakage point 8 according to the water outlet position of the wall surface;
s2: installing a plugging device: fixedly installing a plugging plate 4 on a wall body 1 at a leakage position, inserting a flow guide pipe 7 into the leakage position of the wall body 1 through a through hole of the plugging plate 4, welding the flow guide pipe 7 with the plugging plate 4, arranging a valve switch 5 at the outer end of the flow guide pipe 7, and then performing edge sealing treatment on a prefabricated plugging steel plate;
preferably, the insertion end of the draft tube 7 is inserted into the soil body outside the wall body 1 by 8-20 mm; and when grouting, the injected grout forms a convex structure 6 on the outer side of the wall body 1.
Preferably, two edge sealing layers are arranged between the edge of the prefabricated plugging steel plate and the wall body 1, wherein an inner edge sealing layer 3 is arranged firstly, and then an outer edge sealing layer 2 is arranged; the inner edge sealing layer 3 is a mixture composed of face yarn and grease, and the outer edge sealing layer 2 is made of water-swellable rubber.
S3: grouting: after the plugging device is installed, a valve is opened to perform drainage operation, after the drainage operation is completed, the guide pipe 7 is externally connected with a grouting device, and then a leakage space in a leakage position of the wall body 1 is filled through grouting to realize plugging;
preferably, the slurry used for grouting comprises cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 1.8-2.2.
S4: sealing: after grouting, the valve switch 5 on the guide pipe 7 is detached, and the guide pipe 7 is sealed.
Preferably, the outer port of the draft tube 7 is in threaded connection with the draft tube through a flange bolt 11, and the strength grade of the flange bolt 11 is 8.5-9.0.
Preferably, after the sealing of the draft tube 7 is finished, polyurethane 10 is laid on the outer side of the connection part of the draft tube 7 and the flange bolt 11.
The embodiment is as follows:
the invention provides an embodiment based on a plugging method for an underground concrete permeable wall, which comprises the following steps:
s1: determining the position of a leakage point 8: chiseling moss, weeds or other covering impurities and the like on the surface of the wall body 1 at the leakage position to expose the surface of the concrete, and determining the position of a leakage point 8 according to the water outlet position of the wall surface;
s2: installing a plugging device: installing a plugging plate 4 on a wall body 1 at a leakage position, enabling a water outlet of a leakage point 8 to be over against a through hole with the diameter of 30mm on the plugging plate 4, and then driving an expansion bolt 9 with the diameter of 12mm into the edge of the plugging plate 4 to fix the same, so as to ensure that leakage water smoothly flows out; the guide pipe 7 is inserted into the leakage part of the wall body 1 through the through hole of the plugging plate 4, so that the guide pipe 7 is inserted into a leakage point gap as far as possible, the guide pipe 7 is welded with the plugging plate 4, the outer end part of the guide pipe 7 is provided with a valve switch 5, and then the prefabricated plugging steel plate is subjected to edge sealing treatment; two edge sealing layers are arranged between the edge of the prefabricated plugging steel plate and the wall body 1, wherein an inner edge sealing layer 3 is arranged firstly, and an outer edge sealing layer 2 is arranged secondly; the inner sealing edge layer 3 is a mixture of veil and grease, and the outer sealing edge layer 2 is made of water-swellable rubber;
if the leakage point 8 of the leakage part penetrates through the whole wall body, the insertion end of the flow guide pipe 7 is inserted into the soil body on the outer side of the wall body 1 by 14mm, so that the wall body 1 can be grouted on one side close to the soil body, and when grouting is carried out, the injected grout forms a protruding structure 6 on the outer side of the wall body 1, and the wall body is sealed and waterproof. If the leakage point 8 of the leakage part only penetrates through one side part of the wall body close to the plugging plate 4, the insertion end of the guide pipe 7 is aligned with the leakage point 8, and grouting plugging is carried out on the leakage point 8;
s3: grouting: after the plugging device is installed, a valve is opened to perform drainage operation, after the drainage operation is completed, a flow guide pipe 7 is externally connected with a grouting device, grouting slurry comprises cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 2; then, filling a leakage space in the leakage part of the wall body 1 by grouting to realize plugging;
s4: sealing: after grouting is finished, a valve switch 5 on a guide pipe 7 is disassembled to realize sealing treatment, an outer port of the guide pipe 7 is in threaded connection with the guide pipe through a flange bolt 11 to realize sealing, and the strength grade of the flange bolt 11 is 8.8 grade; after the sealing of the guide pipe 7 is finished, polyurethane 10 is uniformly laid on the outer side of the connecting part of the guide pipe 7 and the flange bolt 11, and the water stopping effect is checked.
The present invention is not limited to the above-described preferred embodiments, but various modifications and changes can be made by 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 plugging device for secret concrete infiltration wall body, its characterized in that: the device comprises a flow guide pipe (7), a plugging plate (4) and a grouting device, wherein the plugging plate (4) is fixedly arranged at a wall body (1) where a leakage part is located, a through hole is formed in the middle of the plugging plate (4), the flow guide pipe (7) is arranged in the through hole and fixedly connected with the plugging plate (4), and a sealing structure is arranged between the edge of the plugging plate (4) and the wall body (1); a valve switch (5) is arranged on one side of the flow guide pipe (7) far away from the wall body (1); when grouting, the grout outlet of the grouting device is connected with the outer port of the draft tube (7).
2. The plugging device for an underground concrete-permeable wall according to claim 1, wherein: the plugging plate (4) is fixed on the wall body (1) through an expansion bolt (9).
3. The plugging device for an underground concrete permeable wall according to claim 1, wherein: the sealing structure comprises water-swelling rubber arranged around the edge of the plugging plate (4).
4. The plugging device for an underground concrete permeable wall according to claim 1, wherein: the diameter of the through hole of the plugging plate (4) is 25-35 mm.
5. The plugging method for the underground concrete permeable wall is characterized by comprising the following steps: the implementation of the plugging device for underground concrete permeable walls according to any one of claims 1 to 4, comprising the following steps:
s1: determining the position of a leakage point (8): cleaning the surface of the wall body (1) at the leakage position to expose the concrete surface, and determining the position of a leakage point (8) according to the water outlet position of the wall surface;
s2: installing a plugging device: fixedly installing a plugging plate (4) on a wall body (1) at a leakage position, inserting a guide pipe (7) into the leakage position of the wall body (1) through a through hole of the plugging plate (4), welding the guide pipe (7) with the plugging plate (4), arranging a valve switch (5) at the outer end of the guide pipe (7), and then performing edge sealing treatment on a prefabricated plugging steel plate;
s3: grouting: after the plugging device is installed, a valve is opened to perform drainage operation, after the drainage operation is completed, a guide pipe (7) is externally connected with a grouting device, and then a leakage space in a leakage position of the wall body (1) is filled through grouting to realize plugging;
s4: and (3) sealing: after grouting is finished, the valve switch (5) on the guide pipe (7) is disassembled, and sealing treatment is carried out on the guide pipe (7).
6. The plugging method for an underground concrete permeable wall according to claim 5, wherein: in S2, the insertion end of the draft tube (7) is inserted into the soil body outside the wall body (1) by 8-20 mm; and S3, forming a protruding structure (6) on the outer side of the wall body (1) by the injected grout.
7. The plugging method for the underground concrete permeable wall according to claim 5, wherein: s2, arranging two edge sealing layers between the edge of the prefabricated plugging steel plate and the wall body (1), namely arranging an inner edge sealing layer (3) and then arranging an outer edge sealing layer (2); the inner edge sealing layer (3) is a mixture consisting of gauze and grease, and the outer edge sealing layer (2) is made of water-swellable rubber.
8. The plugging method for the underground concrete permeable wall according to claim 5, wherein: and in S3, the slurry for grouting comprises cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 1.8-2.2.
9. The plugging method for the underground concrete permeable wall according to claim 5, wherein: in S4, the outer port of the draft tube (7) is in threaded connection with the draft tube through a flange bolt (11), and the strength grade of the flange bolt (11) is 8.5-9.0.
10. The plugging method for an underground concrete permeable wall according to claim 9, wherein: and S4, after the sealing of the draft tube (7) is finished, polyurethane (10) is laid on the outer side of the connecting part of the draft tube (7) and the flange bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211292885.8A CN115573373A (en) | 2022-10-21 | 2022-10-21 | Plugging device and method for underground concrete permeable wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211292885.8A CN115573373A (en) | 2022-10-21 | 2022-10-21 | Plugging device and method for underground concrete permeable wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115573373A true CN115573373A (en) | 2023-01-06 |
Family
ID=84586932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211292885.8A Pending CN115573373A (en) | 2022-10-21 | 2022-10-21 | Plugging device and method for underground concrete permeable wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115573373A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716189A1 (en) * | 1994-12-07 | 1996-06-12 | Shigeo Nagahama | A cut-off water process for a concrete underground structure |
| JP2007231676A (en) * | 2006-03-02 | 2007-09-13 | Shimizu Corp | Cut-off device and through-hole forming method |
| CN203924137U (en) * | 2014-05-21 | 2014-11-05 | 中铁十五局集团有限公司 | Serious seepage block structure of underground continuous wall |
| CN204343326U (en) * | 2014-12-11 | 2015-05-20 | 中铁四局集团第三建设有限公司 | Pipe spreading shutoff leakage preventing structure in the pre-buried pvc pipe cover of a kind of concrete wall |
| CN110080311A (en) * | 2019-03-18 | 2019-08-02 | 广西大学 | A kind of method of diaphram wall metope leak stopping |
| CN216075198U (en) * | 2021-09-29 | 2022-03-18 | 武汉华太岩土工程有限公司 | Foundation pit side wall leakage plugging device |
-
2022
- 2022-10-21 CN CN202211292885.8A patent/CN115573373A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716189A1 (en) * | 1994-12-07 | 1996-06-12 | Shigeo Nagahama | A cut-off water process for a concrete underground structure |
| JP2007231676A (en) * | 2006-03-02 | 2007-09-13 | Shimizu Corp | Cut-off device and through-hole forming method |
| CN203924137U (en) * | 2014-05-21 | 2014-11-05 | 中铁十五局集团有限公司 | Serious seepage block structure of underground continuous wall |
| CN204343326U (en) * | 2014-12-11 | 2015-05-20 | 中铁四局集团第三建设有限公司 | Pipe spreading shutoff leakage preventing structure in the pre-buried pvc pipe cover of a kind of concrete wall |
| CN110080311A (en) * | 2019-03-18 | 2019-08-02 | 广西大学 | A kind of method of diaphram wall metope leak stopping |
| CN216075198U (en) * | 2021-09-29 | 2022-03-18 | 武汉华太岩土工程有限公司 | Foundation pit side wall leakage plugging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204343312U (en) | Plugging device of precipitation well in foundation pit | |
| CN107326918B (en) | Hidden type plugging impervious water collecting well penetrating through raft plates and construction process thereof | |
| CN203924137U (en) | Serious seepage block structure of underground continuous wall | |
| CN203939060U (en) | Slight seepage block structure of underground continuous wall | |
| CN109024706A (en) | A kind of foundation pit waterproof curtain breakthrough inside method for blocking | |
| CN102839691B (en) | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead | |
| CN112900512A (en) | Basement bottom plate crack punching, reinforcing and repairing construction method | |
| CN105780792B (en) | A kind of foundation pit high water head Dewatering by pressure reduction well shut-in well method and structure of shunting in a well | |
| CN102535518B (en) | Plugging method of large seam of underground diaphragm wall | |
| CN110241837A (en) | A kind of construction method for preventing basement bottom board from cracking under high artesian geological conditions | |
| CN212506349U (en) | Water-logging well sealing device for water-lowering zone of ultra-deep foundation pit pipe well | |
| CN212052921U (en) | Foundation pit enclosure leakage repairing structure | |
| CN212656247U (en) | Deep foundation pit plugging device | |
| CN105220700A (en) | Foundation pit waterproof curtain reinforcement | |
| CN110284908B (en) | Circumferential grouting plugging method in shield receiving well | |
| CN204456228U (en) | A kind of diaphragm wall fast plugging device | |
| CN115573373A (en) | Plugging device and method for underground concrete permeable wall | |
| CN110144918A (en) | Hypogee dewatering well antiseepage plugging construction method | |
| CN214940041U (en) | Water leakage prevention structure of diaphragm wall | |
| CN210946855U (en) | Plugging device for dewatering well | |
| CN114370275A (en) | Bedrock bolting-grouting impervious supporting structure and construction method thereof | |
| CN210194656U (en) | Building envelope leaking stoppage structure | |
| CN208088305U (en) | A kind of foundation pit water burst fast plugging device | |
| CN206752531U (en) | A kind of slight leakage plugging structure of diaphram wall | |
| CN221321021U (en) | Variable cross-section dewatering well penetrating through bottom plate in foundation pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |