CN114525800A - Leakage treatment method for basement raft plate - Google Patents
Leakage treatment method for basement raft plate Download PDFInfo
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- CN114525800A CN114525800A CN202210188687.0A CN202210188687A CN114525800A CN 114525800 A CN114525800 A CN 114525800A CN 202210188687 A CN202210188687 A CN 202210188687A CN 114525800 A CN114525800 A CN 114525800A
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- grouting
- construction method
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- leakage
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a leakage treatment construction method for a basement raft, which comprises the following steps: s1, field investigation: determining a construction range; s2, a waterproof curtain: determining an area with the construction range expanded by 1 meter outwards as a maintenance range, drilling in the maintenance range, and injecting cement mate grouting material into the hole to form a curtain; s3, curtain grouting: taking holes in a quincunx or groined layout in a maintenance range, embedding a grouting pipe, and pouring cement partner grouting material into the grouting pipe to enable the cement partner grouting material to flow into the holes; s4, filling and repairing: taking the hole again in the maintenance range, and injecting acrylate slurry into the hole; s5, surface cleaning: a layer of fiber cloth is adhered to the surface within the maintenance range of the adhesive, so that the leakage treatment effect of economy, attractiveness and up-to-standard construction quality is achieved.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a leakage treatment method for a basement raft.
Background
Along with the use to secret resource among the building engineering, modern building has mostly all designed the basement, the number of piles of basement is also increasing day by day simultaneously, consequently can appear pouring the in-process at the structure of initial stage, because the bulky concrete construction cycle of basement is longer, and often meet the condition of construction at night, lead to the concrete construction quality of basement not easily to manage and control, unfavorable condition such as vibration leakage appears easily, when basement raft quality is not good, raft come-up phenomenon will be formed during secret water pressure increase.
The basement raft structure is because the direct connection face is facing to the huge water pressure of underground soil layer, and the conventional mode that adopts precipitation well and resistance to plucking stock to combine together is solved, and precipitation well can stop after concrete placement is accomplished, but can lead to pouring the effect poor because of basement concrete placement time overlength.
In order to solve the situation, a polyurethane grouting treatment mode is selected by a plurality of civil engineering units, the leakage treatment effect is achieved through the foaming effect of the polyurethane material, but the secondary shrinkage of the polyurethane can cause the increase of the re-leakage probability.
Therefore, aiming at the seepage of the basement raft, the invention discloses a treatment method which can save economic benefits, ensure construction quality and prevent multiple return to the field.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide the leakage treatment construction method for the basement raft, which can achieve the leakage treatment effect of being economical, beautiful and standard in construction quality.
In order to achieve the above purposes, the invention adopts the technical scheme that: a leakage treatment construction method for a basement raft comprises the following steps:
s1, field investigation: determining a construction range;
s2, waterproof curtain: determining an area with the construction range expanded by 1 meter outwards as a maintenance range, drilling in the maintenance range, and injecting cement mate grouting material into the hole to form a curtain;
s3, curtain grouting: taking holes in a quincunx or groined layout in a maintenance range, embedding a grouting pipe, and pouring cement partner grouting material into the grouting pipe to enable the cement partner grouting material to flow into the holes;
s4, filling and repairing: taking the hole again in the maintenance range, and injecting acrylate slurry into the hole;
s5, surface cleaning: and a layer of fiber cloth is adhered to the surface of the maintenance range through the adhesive.
Further, in S5, the method further includes performing a chiseling process on the maintenance area and cleaning impurities generated by the chiseling process, wherein the chiseling process is performed before the fiber cloth is attached.
Further, there is a time interval between the S3 and S4, and the time interval is greater than 48 hours.
Further, in S4, the sequence of injecting the acrylate slurry into the hole is performed in a zigzag manner.
Further, after the steps S3 and S4, a plugging treatment is added, wherein the plugging treatment comprises the steps of removing the grouting nozzle on the hole and plugging the hole.
Further, in the plugging treatment, a rigid powder sealant is used for plugging the holes.
Further, the plugging process performed after the S4 has a time interval of more than 24 hours from the S4.
Compared with the prior art, the invention has the beneficial effects that:
(1) the waterproof curtain is matched with curtain grouting, and the water pressure directly faced by a basement raft plate is relieved by using cement mate grouting material under the condition of not interfering the structure, so that the purpose of solving leakage is achieved;
(2) in the grouting operation process, the cement partner grouting material can be well poured into a fine gap of the basement bottom plate so as to tightly fill and plug a joint between a grouting hole and the grouting hole, a newly-built water-blocking layer is ensured to have a certain thickness, the cement partner grouting material is utilized to effectively condense and reinforce a place with serious soil loss of the basement bottom plate by virtue of excellent flexibility and bonding performance, and the service life after repair is prolonged;
(3) the acrylate slurry is utilized to fill fine cracks and capillary cavities in the raft structure of the basement tightly, so that the effect of repairing and reinforcing is achieved;
(4) the waterproof layer formed by the injected cement mate grouting material is matched with the waterproof layer formed by the injected acrylate slurry to form a brand-new whole waterproof system, so that the waterproof performance is effectively enhanced, the purpose of leakage control is achieved, and secondary leakage is prevented;
(5) adhering a layer of fiber cloth on the surface of the construction range by using adhesive, covering and sealing the surface of the construction range, and isolating water vapor entering and exiting the basement bottom plate by using the waterproof performance of the fiber cloth;
(6) because the grouting is carried out by taking the holes, the constructed base surface has no left marks except a small amount of grouting holes, including slurry marks and fine cracks, and the attractiveness is ensured;
(7) in the steps S1 and S2, the basement is divided into blocks and then grouting is carried out, so that large-area cleaning caused by intensive grouting treatment in the traditional process is avoided, and the cost is too high.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
Along with the use of underground resources in building engineering, most modern buildings are designed with basements, the number of layers of the basements is increased day by day, in the initial structure pouring process, because the construction period of mass concrete of the basements is long, and the basements are frequently subjected to the condition of night construction, the concrete construction quality of the basements is not easy to control, and unfavorable conditions such as vibration leakage and the like easily occur, when the quality of the basements is poor, and the floating phenomenon of the basements can be formed when the water pressure of underground water is increased;
the raft structure of the basement is conventionally solved by combining a precipitation well and an uplift anchor rod due to the huge water pressure of a direct contact surface facing an underground soil layer, the precipitation well can be stopped after concrete pouring is finished, but the pouring effect is poor due to the overlong concrete pouring time of the basement;
in order to solve the situation, a polyurethane grouting treatment mode is selected by a plurality of civil engineering units, the effect of leakage treatment is achieved through the foaming effect of a polyurethane material, the raft treated by the mode is usually low in strength, and the structure is damaged when a plurality of places react at the same time due to the fact that the stress generated at the moment of foaming of the polyurethane material is large, so that the structure is looser, the probability of leakage is caused, the difficulty of later maintenance is increased, from the aspect of appearance, a lot of traces are usually left on the ground injected with the polyurethane material, and whether the traces left by slurry or fine cracks generated by the foaming effect are numerous;
when the structure constructed by the traditional process is subjected to strong water pressure again, the secondary leakage often occurs because the strength of the structure cannot bear the impact of the high-strength water pressure, so that the structure needs to be returned to the field for maintenance for many times after the construction is finished;
in the traditional process, dense grouting treatment is also commonly adopted when the basement raft plate floats upwards in a large area, and the treatment mode needs to carry out cleaning work with large workload on the surface of the structure, so that the economic cost and the time cost are increased.
To the above problem that exists, this embodiment discloses a seepage treatment method for basement raft, can solve the seepage problem that leads to because of the raft come-up under the condition that does not disturb original structure itself, includes following step:
s1, field investigation:
determining a construction range, and judging whether a pile foundation exists in the construction range or not in order to prevent the condition that the flow direction of slurry cannot be controlled in the subsequent grouting;
s2, waterproof curtain:
in order to prevent the construction range from not covering all penetration areas, determining an area with the construction range expanded outwards by 1 meter as a maintenance range, and drilling in the maintenance range to form a plurality of first grouting holes, wherein the depth of each first grouting hole is slightly smaller than the thickness of the structural plate, and meanwhile, hole taking positions need to be avoided as far as possible from the pile foundation, and hole taking layout is difficult to perform because the structure of the area where the pile foundation is located is dense in rib arrangement; injecting cement partner grouting material into the first grouting hole to perform water-stopping curtain, and doping the cement partner grouting material into the cement paste to enable the cement to have the underwater non-dispersion and early strength performance, so that the cement is solidified underwater to form a curtain, and the flow direction of the grouting material is controlled within the maintenance range;
s3, curtain grouting:
taking holes in a quincunx or groined layout in a maintenance range to form a plurality of second grouting holes, wherein the layout can increase the repetition rate of slurry among the second grouting holes and ensure that the thickness of the formed water-resistant layer meets the expected requirement, and the depth of each second grouting hole is greater than the thickness of the structural plate so that the structural plate is perforated; embedding a grouting pipe in a maintenance range, pouring cement partner grouting material into the grouting pipe, enabling the cement partner grouting material to flow into a second grouting hole, performing condensation reinforcement on a place with serious soil loss of a basement bottom plate, increasing strength, and forming a brand new structure below a raft plate by using the cement partner grouting material to serve as water blocking construction;
s4, plugging treatment:
removing grouting nozzles on the first grouting hole and the second grouting hole, and plugging the grouting holes through a rigid powder sealant;
s5, filling and repairing:
step S3, after 48 hours, re-taking holes in the maintenance range to form a plurality of third grouting holes, continuously injecting acrylate slurry into the third grouting holes according to the sequence of the shape of the Chinese character jing, so that the communicated internal spaces are formed into sheets at multiple points and surfaces at multiple sheets, and a brand-new whole-surface waterproof system is formed to fill and repair cracks, honeycombs and gaps of the basement bottom plate;
s6, plugging treatment:
after step S5 is finished for 24 hours, cleaning the wet spot position or the grouting position on the third grouting hole, removing the grouting nozzle, and plugging the grouting hole by using a rigid powder sealant;
s7, surface cleaning:
the maintenance range is subjected to chiseling treatment, impurities generated by chiseling are cleaned, a layer of fiber cloth is adhered to the surface of the concrete base surface through adhesive after the cleaning is finished, the fiber cloth is required to be flat and free from hollowing, and the bonding performance of the fiber cloth and the concrete base surface can be improved through the chiseling treatment.
When the construction method is adopted to treat the leakage of the basement raft, the water pressure around and right below the raft can be relieved through the matching of the waterproof curtain and the curtain grouting, so that the purpose of solving the leakage water is achieved; in the grouting operation process, the cement partner grouting material can be well poured into a fine gap of the basement bottom plate so as to tightly fill and plug a joint between a grouting hole and the grouting hole, a newly-built water-blocking layer is ensured to have a certain thickness, the cement partner grouting material is utilized to effectively condense and reinforce a place with serious soil loss of the basement bottom plate by virtue of excellent flexibility and bonding performance, and the service life of the repaired basement bottom plate is prolonged; then, the acrylate slurry is utilized to fill fine cracks and capillary cavities in the basement raft structure tightly, so that the repairing and reinforcing effects are achieved; the waterproof layer formed by the injected cement mate grouting material is matched with the waterproof layer formed by the injected acrylate slurry to form a brand-new whole waterproof system, so that the waterproof performance is effectively enhanced, the purpose of leakage control is achieved, and secondary leakage is prevented; a layer of fiber cloth is adhered to the surface of the construction range by using the adhesive, the surface of the construction range is covered and sealed, and the water vapor entering and exiting the basement bottom plate is isolated by using the waterproof performance of the fiber cloth.
In this embodiment, the acrylate slurry is a guoshi ZJ-1 type acrylate grouting plugging material, and the ZJ-1 type acrylate grouting plugging material is a bi-component grouting plugging material, and has the following characteristics: (1) is non-toxic and environment-friendly; (2) the gel has strong bonding performance; (3) the gelling time is controllable and adjustable, and the method is flexibly applied according to conditions; (4) the waterproof performance is good, and water leakage can be caused by long-time contact; (5) the gel has adjustable strength, high extrusion damage resistance ratio and can bear high water pressure; (6) the durability is good, and the chemical structure of the gel is stable.
In the embodiment, the rigid powder sealant adopts the best solid product of my department product, and has the following characteristics: (1) the hardness is increased quickly; (2) no alkaline residue; (3) the anti-seepage performance is good.
In this embodiment, the adhesive is a guoshi X13 epoxy adhesive, which is used according to the ratio of 1: 0.4 and water are mixed and stirred to be putty-shaped, the main effect is to prevent fine leakage points in the later construction area, the fiber can evenly spread the water pressure received by a single point on the whole adhered base surface, and the putty-shaped adhesive has the following characteristics: (1) contains various polar groups and epoxy groups with high activity, so the adhesive bonding strength is high; (2) during curing, basically no low-molecular volatile matters are generated, and the influence on the adhesive strength is small, so that the dimensional stability of the adhesive layer is good; (3) the corrosion resistance and the dielectric property are good; (4) has good compatibility and reactivity with various organic matters and inorganic matters, and is easy to improve the performance of the adhesive layer.
In this example, the fiber cloth was made of kagushi X14 composite polymer alkali-resistant fiber, two special treatment fiber layers were added to polypropylene fiber cloth, and the two special treatment fiber layers were integrated by compression treatment, and the following properties were obtained: (1) the corrosion resistance and the durability are strong; (2) waterproof and good permeability.
The core improvement points of the invention are as follows: (1) the process uses the cement mate grouting material to relieve the direct water pressure faced by the basement raft plate under the condition of not interfering the structure, thereby achieving the purpose of leakage treatment; (2) the constructed base surface has no left marks except a small amount of grouting holes, including slurry marks and fine cracks; (3) after the process is subjected to the barrier treatment, secondary leakage caused by strong water pressure impact can be avoided; (4) the process can be maintained only after the basement is divided into blocks.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A leakage treatment construction method for a basement raft is characterized by comprising the following steps:
s1, field investigation: determining a construction range;
s2, waterproof curtain: determining an area with the construction range expanded by 1 meter outwards as a maintenance range, drilling in the maintenance range, and injecting cement mate grouting material into the hole to form a curtain;
s3, curtain grouting: taking holes in a quincunx or groined layout in a maintenance range, embedding a grouting pipe, and pouring cement partner grouting material into the grouting pipe to enable the cement partner grouting material to flow into the holes;
s4, filling and repairing: taking the hole again in the maintenance range, and injecting acrylate slurry into the hole;
s5, surface cleaning: and a layer of fiber cloth is adhered to the surface of the maintenance range through the adhesive.
2. The leakage treatment construction method for the basement raft according to claim 1, wherein the leakage treatment construction method comprises the following steps: and S5, performing scabbling treatment on the maintenance range, and cleaning sundries generated by scabbling, wherein the scabbling treatment is performed before fiber cloth is adhered.
3. The leakage treatment construction method for the basement raft plate according to claim 1, wherein the leakage treatment construction method comprises the following steps: there is a time interval between the S3 and S4, and the time interval is greater than 48 hours.
4. The leakage treatment construction method for the basement raft according to claim 3, wherein the leakage treatment construction method comprises the following steps: in S4, the sequence of injecting the acrylate slurry into the hole is performed in a zigzag manner.
5. The leakage treatment construction method for the basement raft according to claim 1, wherein the leakage treatment construction method comprises the following steps: and adding plugging treatment after the steps S3 and S4, wherein the plugging treatment comprises removing the grouting nozzle on the hole and plugging the hole.
6. The leakage treatment construction method for the basement raft according to claim 5, wherein the leakage treatment construction method comprises the following steps: in the plugging treatment, a rigid powder sealant is used for plugging the holes.
7. The leakage treatment construction method for the basement raft according to claim 5, wherein the leakage treatment construction method comprises the following steps: the occlusion treatment performed after the S4 has a time interval of more than 24 hours from the S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210188687.0A CN114525800A (en) | 2022-02-28 | 2022-02-28 | Leakage treatment method for basement raft plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210188687.0A CN114525800A (en) | 2022-02-28 | 2022-02-28 | Leakage treatment method for basement raft plate |
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| CN114525800A true CN114525800A (en) | 2022-05-24 |
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| CN202210188687.0A Pending CN114525800A (en) | 2022-02-28 | 2022-02-28 | Leakage treatment method for basement raft plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116411595A (en) * | 2023-06-09 | 2023-07-11 | 北京城建设计发展集团股份有限公司 | External plugging method for underground structure water leakage treatment |
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|---|---|---|---|---|
| CN102653946A (en) * | 2012-05-21 | 2012-09-05 | 中国十七冶集团有限公司 | Waterproof construction method for setting rubber waterstop at bottom of reinforced concrete raft foundation |
| WO2014139252A1 (en) * | 2013-03-15 | 2014-09-18 | 中国十七冶集团有限公司 | Method for constructing large raft foundation in high-temperature environment |
| CN109853633A (en) * | 2018-12-29 | 2019-06-07 | 中建四局第六建筑工程有限公司 | A kind of external sealing treatment process of basement bottom board leakage |
| CN215669744U (en) * | 2021-08-30 | 2022-01-28 | 广东科顺修缮建筑技术有限公司 | Masonry structure basement seepage slip casting repair structure |
-
2022
- 2022-02-28 CN CN202210188687.0A patent/CN114525800A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653946A (en) * | 2012-05-21 | 2012-09-05 | 中国十七冶集团有限公司 | Waterproof construction method for setting rubber waterstop at bottom of reinforced concrete raft foundation |
| WO2014139252A1 (en) * | 2013-03-15 | 2014-09-18 | 中国十七冶集团有限公司 | Method for constructing large raft foundation in high-temperature environment |
| CN109853633A (en) * | 2018-12-29 | 2019-06-07 | 中建四局第六建筑工程有限公司 | A kind of external sealing treatment process of basement bottom board leakage |
| CN215669744U (en) * | 2021-08-30 | 2022-01-28 | 广东科顺修缮建筑技术有限公司 | Masonry structure basement seepage slip casting repair structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116411595A (en) * | 2023-06-09 | 2023-07-11 | 北京城建设计发展集团股份有限公司 | External plugging method for underground structure water leakage treatment |
| CN116411595B (en) * | 2023-06-09 | 2023-09-08 | 北京城建设计发展集团股份有限公司 | External plugging method for underground structure water leakage treatment |
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