CN111809670A - Leaking stoppage grouting and reinforcing construction method for basement exterior wall construction joint - Google Patents
Leaking stoppage grouting and reinforcing construction method for basement exterior wall construction joint Download PDFInfo
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- CN111809670A CN111809670A CN202010706895.6A CN202010706895A CN111809670A CN 111809670 A CN111809670 A CN 111809670A CN 202010706895 A CN202010706895 A CN 202010706895A CN 111809670 A CN111809670 A CN 111809670A
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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
- E02D31/04—Watertight packings for use under hydraulic pressure
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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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
Abstract
The invention discloses a basement exterior wall construction joint plugging grouting and reinforcing construction method, which comprises the following process flows in sequence: cleaning a base layer → checking a grouting part → arranging a hole → drilling a hole → cleaning the hole, protecting the hole → arranging a nozzle → arranging grouting material → grouting, repeatedly checking the grouting → consolidating → dismantling the nozzle; aiming at the problem that water seepage or water burst is caused due to the fact that water pressure damages concrete of an outer wall construction joint of a basement after the water level of the outer wall construction joint is improved, a 'stone body' which is novel in structure, high in strength, high in waterproof performance and good in chemical stability is formed, the waterproof performance and the bearing capacity of a foundation are improved, the reinforced concrete of the outer wall construction joint is guaranteed not to be impacted by the water pressure, water immersion observation is carried out from one side, and the other side is still free of water after 48-72 hours, so that the effect of no seepage and no leakage can be completely achieved.
Description
Technical Field
The invention relates to the technical field of basement exterior wall construction joint water-proof plugging and underground building reinforcement, in particular to a basement exterior wall construction joint plugging grouting and reinforcing construction method.
Background
After the water level of the basement outer wall construction joint is increased, the water pressure damages the concrete of the outer wall construction joint, and the problem of water leakage or water burst is caused. For the phenomena of water leakage and water burst, the prior art adopts injection and grouting for treating the construction joint of the external wall, but the treatment mode has the following problems:
1. the water-seepage-resistant sealing agent can be used when water seepage is small, and is difficult to block when water gushes seriously, so that construction is difficult.
2. The water seepage cannot be solved from the root, and only the cracks are blocked.
3. Because of the difference of plugging materials, the lasting effect time can not be ensured after plugging.
Disclosure of Invention
The invention aims to provide a basement exterior wall construction joint leaking stoppage grouting and reinforcing construction method, which can improve the impermeability and the bearing capacity of a foundation, ensure that reinforced concrete at an exterior wall construction joint part is not impacted by water pressure, start immersion observation from one surface, and ensure that the other surface still has no water after 48-72 hours, thereby completely achieving the effect of no seepage and no leakage.
The invention is realized by the following technical scheme: the basement exterior wall construction joint plugging grouting and reinforcing construction method comprises the following specific steps:
1) cleaning a base layer: professional constructors clean impurities on the surface of the base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing geology, and arranging grouting hole sites from one end of an outer wall construction joint to the other end according to geological conditions, wherein the height distance between the grouting hole sites and the grouting hole sites is 0.6-1m, and the horizontal distance is about 0.8-1 m (specifically determined according to field conditions);
4) drilling: after hole distribution is finished, a constructor drills a hole (the constructor operates the equipment more safely) by using the concrete drilling core-drilling machine according to the hole distribution position to form a grouting hole with the depth of 1-1.2 m (which is determined according to actual conditions) and the hole center vertical to the wall surface;
5) cleaning and protecting the holes: after drilling is finished, cleaning up dregs in the grouting hole, and then adopting a protective measure to protect the grouting hole, and strictly preventing sundries from entering the hole;
6) distributing a nozzle: installing a grouting pipe (a small grouting hole is arranged on the pipe, and a valve controllable switch is arranged on the pipe) in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water leakage does not occur, and looseness is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, and mixing cement and water according to the proportion of the grouting liquid, wherein the proportion of cement and water is 0.8-1.2: stirring for 20-25 minutes at a ratio of 0.8-1.2, and simultaneously mixing water and a multifunctional high-strength water-based grouting agent (mainly comprising water glass, sodium aluminate, modified water-based epoxy resin, barium acrylate, a curing agent and other materials) according to a ratio of 48-53: stirring for more than 5-10 minutes at a ratio of 0.9-1.3;
8) grouting: after pressure testing, under the condition that the structure compression range is not exceeded, grouting liquid ('water + cement' and 'water + multifunctional high-strength water-based grouting agent') is poured into the grouting holes, when the grouting liquid is poured, the grouting liquid is gradually poured from one side of an outer wall construction joint to the other side, the pouring pressure is 1-2.5MPa, the grouting liquid is tightly combined with earth and stones by adopting a multi-time supplementary grouting mode, grouting is stopped until the grouting pressure changes smoothly, and a valve on a grouting pipe is closed to change and pour adjacent grouting holes;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: and after grouting is finished, observing for a period of time (preferably 24-30 hours), and cutting off redundant grouting pipes exceeding the ground after the leakage stopping effect (no water leakage) is achieved.
In order to further realize the invention, the following arrangement mode is adopted: in the step 4), during drilling, a concrete core drilling machine is adopted to drill a grouting hole (for pressure relief) with the aperture of 75-83 mm firstly and a grouting hole (for inserting a grouting pipe) with the aperture of 45-53mm secondly.
In order to further realize the invention, the following arrangement mode is adopted: the pipe wall of grout pipe is provided with little grout hole, and still is provided with the valve on the grout pipe, and the valve is as the switch of control grout break-make in the grout pipe.
In order to further realize the invention, the following arrangement mode is adopted: the multifunctional high-strength water-based grouting agent is prepared from the following components in parts by mass of 0.8-1.2: 0.2-0.8: 0.04-0.06: 0.03 to 0.08: 0.03-0.05 of water glass, sodium aluminate, modified waterborne epoxy resin, barium acrylate and a curing agent.
In order to further realize the invention, the following arrangement mode is adopted: in the step 8), a hydraulic double-liquid grouting pump is adopted during pressure testing, and the pressure testing is carried out within a structure pressure-bearing range; when the perfusion is carried out, the perfusion pressure is 1-2.5 MPa.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention aims at the problems that water seepage or water burst is generated due to the damage of the water pressure to the concrete of the construction joint of the outer wall of the basement after the water level of the construction joint of the outer wall is increased, by the principles of hydraulic pressure, air pressure and dynamics, the grout is evenly injected into the stratum through a grouting pipe, and after the grout drives away the moisture and air in soil particles or rock cracks in the modes of filling, permeating, compacting and the like, the mortar occupies the position of the concrete, and after a certain period of manual control, the original loose soil particles or cracks are cemented into a whole by the mortar, so that a 'stone body' with a new structure, high strength, high waterproof performance and good chemical stability is formed, the waterproof performance and the bearing capacity of the foundation are improved, the reinforced concrete of the outer wall is ensured not to be impacted by water pressure, the observation of soaking from one side is carried out, and the other side still has no water after 48-72 hours, so that the effect of no seepage and no leakage can be completely achieved.
(2) The invention adopts a low-pressure, slow-filling, fast-curing and clearance control grouting method to enhance the monitoring and detection of the structure during grouting and prevent the lifting of the bottom plate of the structure caused by grouting.
(3) The invention relates to a grouting method through series control: the grouting method has the advantages that low pressure, slow grouting, rapid curing and multiple times of intermittent grouting are carried out, the grouting fullness can also play the roles of repairing the damage of the drilling hole to the waterproof layer and the original damaged waterproof layer, the material after grouting and curing is equivalent to the fact that the waterproof layer is poured in the grouted concrete, the problem of water channeling does not exist, the purpose of repairing the damage of the waterproof layer is achieved, and meanwhile the reinforcing effect of the outer wall construction joint is also achieved.
(4) The invention fills the water storage cavity outside the outer wall construction joint, changes the cavity water into fissure water, and extrudes the pressure water to the outer side of the building, so that the pressure water is changed into non-pressure water or micro-pressure water, and the problem of water seepage can be fundamentally solved. Grouting material (thick liquid) and soil body closely combine to form a whole, and after the grout shaping, its structural configuration alternates between the outer wall, forms a tenon fourth of the twelve earthly branches structure, and is inseparable firm more. The water seepage problem is solved, meanwhile, the underground building is reinforced, and the problems of long time, uneven settlement of the building and the like can be solved.
Drawings
FIG. 1 is a schematic view of plugging, grouting and reinforcing of a construction joint of an external wall of a basement.
Fig. 2 is a diagram of the position of a leaking stoppage and distribution hole of a basement construction joint.
Wherein, the construction joint comprises 1-basement exterior wall, 2-basement exterior wall construction joint leakage area, 3-grouting pipe, 4-grouting range, 5-soil facing surface and 6-steel plate water stop.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The process flow of the invention is as follows: cleaning a base layer → checking a grouting part → arranging a cloth hole → drilling a hole → cleaning the hole, protecting the hole → arranging a nozzle → arranging grouting material (slurry) → grouting, repeatedly checking the grouting → consolidation → dismantling the nozzle.
Example 1:
as shown in fig. 1 and 2, reference numeral 1 is a basement outer wall, reference numeral 2 is a basement outer wall leakage area, reference numeral 3 is a grouting pipe, reference numeral 4 is a grouting range, reference numeral 5 is a soil facing surface, reference numeral 6 is a steel plate water stop, the distance between a horizontal upward grouting hole site and a grouting hole site is 0.8m, and the distance between a height upward grouting hole site and a grouting hole site is 0.6 m.
The invention designs an upright roof water seepage and leakage stoppage construction method, which comprises the following detailed steps:
1) cleaning a base layer: professional constructors clean impurities on the surface of the base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing the geology, and arranging grouting hole sites from one end of a basement exterior wall construction joint to the other end according to the geological condition, wherein the height interval between the grouting hole sites and the grouting hole sites is 0.6m, and the horizontal interval is 0.8 m;
4) drilling: after hole distribution is finished, a constructor drills a grouting hole with the depth of 1m and the center of the hole vertical to the wall surface by using a concrete drilling core machine according to the hole distribution position (the constructor operates the equipment to be safer), and during drilling, a hole with the diameter of 75mm (used for pressure relief) is drilled firstly, and then a hole with the diameter of 45mm (used for inserting a grouting pipe) is drilled;
5) cleaning and protecting the holes: after drilling is finished, immediately cleaning up dregs in the grouting hole, and then adopting a protective measure to protect the grouting hole, and strictly prohibiting the entry of sundries;
6) distributing a nozzle: installing a grouting pipe (a small grouting hole is arranged on the pipe, and a valve controllable switch is arranged on the pipe) in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water leakage does not occur, and looseness is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, and mixing cement and water according to the proportion of the grouting liquid, namely, according to the weight ratio of 0.8: 1, stirring for 20 minutes, and simultaneously mixing water and a multifunctional high-strength water-based grouting agent (comprising the main components of water glass, sodium aluminate, modified water-based epoxy resin, barium acrylate, a curing agent and the like in a mass ratio of 0.8: 0.2: 0.04: 0.03: 0.03) according to a ratio of 48: stirring for 5 minutes according to the proportion of 0.9;
8) grouting: after pressure testing, under the condition that the structure compression range is not exceeded, grouting liquid ('water + cement' and 'water + multifunctional high-strength water-based grouting agent') is poured into the grouting holes, when the grouting liquid is poured, the grouting liquid is gradually poured from one side of an outer wall construction joint to the other side, the pouring pressure is 1MPa, multiple supplementary grouting modes are adopted to enable the grouting liquid to be tightly combined with earth and stones, grouting is stopped until the grouting pressure changes smoothly, grouting is stopped after the grouting pressure changes stably, valves on grouting pipes are closed, and adjacent grouting holes are changed;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: after grouting, after observation for a period of time (preferably 24 hours), the excess grouting pipe beyond the ground is cut off after the plugging effect (no water leakage) is achieved.
The other side is still free of water after 56 hours, as seen from the beginning of the immersion, so that the effect of impermeability can be achieved completely.
Example 2:
as shown in fig. 1 and 2, reference numeral 1 is a basement outer wall, reference numeral 2 is a basement outer wall leakage area, reference numeral 3 is a grouting pipe, reference numeral 4 is a grouting range, reference numeral 5 is a soil facing surface, reference numeral 6 is a steel plate water stop, the distance between a horizontally upward grouting hole site and a grouting hole site is 1m, and the distance between a highly upward grouting hole site and a grouting hole site is 1 m.
The invention designs an upright roof water seepage and leakage stoppage construction method, which comprises the following detailed steps:
1) cleaning a base layer: professional constructors clean impurities on the surface of the base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing the geology, and arranging grouting hole sites from one end of a basement exterior wall construction joint to the other end according to the geological condition, wherein the height interval between the grouting hole sites and the grouting hole sites is 1m, and the horizontal interval is 1 m;
4) drilling: after hole distribution is finished, a constructor drills a grouting hole with the depth of 1.2m and the center of the hole vertical to the wall surface by using a concrete drilling core machine according to the hole distribution position (the constructor operates the equipment to be safer), and during drilling, a hole with the hole diameter of 83mm (used for pressure relief) is drilled firstly, and then a hole with the hole diameter of 53mm (used for inserting a grouting pipe) is drilled;
5) cleaning and protecting the holes: after drilling is finished, immediately cleaning up dregs in the grouting hole, and then adopting a protective measure to protect the grouting hole, and strictly prohibiting the entry of sundries;
6) distributing a nozzle: installing a grouting pipe (a small grouting hole is arranged on the pipe, and a valve controllable switch is arranged on the pipe) in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water leakage does not occur, and looseness is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, and mixing cement and water according to the proportion of the grouting liquid, namely, according to the weight ratio of 0.8: 1.2, stirring for 25 minutes, and simultaneously mixing water and a multifunctional high-strength water-based grouting agent (the main components comprise water glass, sodium aluminate, modified water-based epoxy resin, barium acrylate, a curing agent and the like in a mass ratio of 1.2: 0.8: 0.06: 0.08: 0.05) according to the weight ratio of 53: 1.3 stirring for 10 minutes;
8) grouting: after pressure testing, under the condition that the structure compression range is not exceeded, grouting liquid ('water + cement' and 'water + multifunctional high-strength water-based grouting agent') is poured into the grouting holes, when the grouting liquid is poured, the grouting liquid is gradually poured from one side of an outer wall construction joint to the other side, the pouring pressure is 2.5MPa, the grouting liquid is tightly combined with earth and stones by adopting a multi-time supplementary grouting mode, grouting is stopped until the grouting pressure changes smoothly, grouting is stopped after the grouting pressure is stable, a valve on a grouting pipe is closed, and adjacent grouting holes are changed;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: after grouting, after observation for a period of time (preferably 30 hours), the excess grouting pipe beyond the ground is cut off after the plugging effect (no water leakage) is achieved.
And when the water immersion is observed from one side, the other side still has no water after 48 hours, so that the effect of no seepage can be completely achieved.
Example 3:
as shown in fig. 1 and 2, reference numeral 1 is a basement outer wall, reference numeral 2 is a basement outer wall leakage area, reference numeral 3 is a grouting pipe, reference numeral 4 is a grouting range, reference numeral 5 is a soil facing surface, reference numeral 6 is a steel plate water stop, the distance between a horizontally upward grouting hole site and a grouting hole site is 1m, and the distance between a highly upward grouting hole site and a grouting hole site is 0.6 m.
The invention designs an upright roof water seepage and leakage stoppage construction method, which comprises the following detailed steps:
1) cleaning a base layer: professional constructors clean impurities on the surface of the base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing the geology, and arranging grouting hole sites from one end of a basement exterior wall construction joint to the other end according to the geological condition, wherein the height interval between the grouting hole sites and the grouting hole sites is 0.6m, and the horizontal interval is 1 m;
4) drilling: after hole distribution is finished, a constructor drills a hole by using the concrete drilling core machine according to the hole distribution position (the constructor can operate the equipment more safely) to form a grouting hole with the depth of 1.2m and the hole center vertical to the wall surface;
5) cleaning and protecting the holes: after drilling is finished, immediately cleaning up dregs in the grouting hole, and then adopting a protective measure to protect the grouting hole, and strictly prohibiting the entry of sundries;
6) distributing a nozzle: installing a grouting pipe (a small grouting hole is arranged on the pipe, and a valve controllable switch is arranged on the pipe) in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water leakage does not occur, and looseness is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, namely mixing cement and water according to a slurry ratio of 1.2: stirring for 20 minutes at a ratio of 0.8, and simultaneously mixing water and a multifunctional high-strength water-based grouting agent (mainly comprising water glass, sodium aluminate, modified water-based epoxy resin, barium acrylate, a curing agent and other materials in a mass ratio of 1: 0.5: 0.05: 0.06: 0.04) according to a ratio of 50: 1, stirring for 5 minutes;
8) grouting: after pressure testing, under the condition that the structure compression range is not exceeded, grouting liquid ('water + cement' and 'water + multifunctional high-strength water-based grouting agent') is poured into the grouting holes, when the grouting liquid is poured, the grouting liquid is gradually poured from one side of an outer wall construction joint to the other side, the pouring pressure is 1.5MPa, the grouting liquid is tightly combined with earth and stones by adopting a multi-time supplementary grouting mode, grouting is stopped until the grouting pressure changes smoothly, grouting is stopped after the grouting pressure is stable, a valve on a grouting pipe is closed, and adjacent grouting holes are changed;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: after grouting, after observation for a period of time (preferably 25 hours), the excess grouting pipe beyond the ground is cut off after the plugging effect (no water leakage) is achieved.
And when the water immersion is observed from one side, the other side still has no water after 60 hours, so that the effect of no seepage can be completely achieved.
Example 4:
as shown in fig. 1 and 2, reference numeral 1 is a basement outer wall, reference numeral 2 is a basement outer wall leakage area, reference numeral 3 is a grouting pipe, reference numeral 4 is a grouting range, reference numeral 5 is a soil facing surface, reference numeral 6 is a steel plate water stop, the distance between a horizontal upward grouting hole site and a grouting hole site is 0.8m, and the distance between a height upward grouting hole site and a grouting hole site is 0.6 m.
The invention designs an upright roof water seepage and leakage stoppage construction method, which comprises the following detailed steps:
1) cleaning a base layer: professional constructors clean impurities on the surface of the base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing the geology, and arranging grouting hole sites from one end of a basement exterior wall construction joint to the other end according to the geological condition, wherein the height interval between the grouting hole sites and the grouting hole sites is 0.6m, and the horizontal interval is 0.8 m;
4) drilling: after hole distribution is finished, a constructor drills a grouting hole with the depth of 1.1m and the center of the hole vertical to the wall surface by using a concrete drilling core machine according to the hole distribution position (the constructor operates the equipment to be safer), and during drilling, a hole with the diameter of 80mm (used for pressure relief) is drilled firstly, and then a hole with the diameter of 50mm (used for inserting a grouting pipe) is drilled;
5) cleaning and protecting the holes: after drilling is finished, immediately cleaning up dregs in the grouting hole, and then adopting a protective measure to protect the grouting hole, and strictly prohibiting the entry of sundries;
6) distributing a nozzle: installing a grouting pipe (a small grouting hole is arranged on the pipe, and a valve controllable switch is arranged on the pipe) in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water leakage does not occur, and looseness is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, and mixing cement and water according to the proportion of the grouting liquid, wherein the proportion of cement and water is 1: 1, stirring for 20 minutes, and simultaneously mixing water and a multifunctional high-strength water-based grouting agent (comprising the main components of water glass, sodium aluminate, modified water-based epoxy resin, barium acrylate, a curing agent and the like in a mass ratio of 1.1: 0.4: 0.05: 0.06: 0.04) according to a ratio of 50: 1, stirring for 5 minutes;
8) grouting: after pressure testing, under the condition that the structure compression range is not exceeded, grouting liquid ('water + cement' and 'water + multifunctional high-strength water-based grouting agent') is poured into the grouting holes, when the grouting liquid is poured, the grouting liquid is gradually poured from one side of an outer wall construction joint to the other side, the pouring pressure is 2MPa, a multi-time supplementary grouting mode is adopted to enable the grouting liquid to be tightly combined with earth and stones, grouting is stopped until the grouting pressure changes smoothly, grouting is stopped after the grouting pressure is stable, a valve on a grouting pipe is closed, and adjacent grouting holes are changed;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: after grouting, after observation for a period of time (preferably 28 hours), the excess grouting pipe beyond the ground is cut off after the plugging effect (no water leakage) is achieved.
The observation that the one side is soaked with water is that the other side still has no water after 72 hours, so that the effect of no seepage can be completely achieved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (5)
1. The basement exterior wall construction joint plugging grouting and reinforcing construction method is characterized by comprising the following steps of: the method comprises the following specific steps:
1) cleaning a base layer;
2) checking the grouting part: checking a construction drawing according to the site position, and analyzing a specific grouting part;
3) hole distribution: analyzing geology, and arranging grouting hole sites from one end of an outer wall construction joint to the other end according to geological conditions, wherein the height interval between the grouting hole sites and the grouting hole sites is 0.6-1m, and the horizontal interval is 0.8-1 m;
4) drilling: after hole distribution is finished, drilling a grouting hole with the depth of 1-1.2 m and the hole center vertical to the wall surface by constructors according to the hole distribution position;
5) cleaning and protecting the holes: after drilling is finished, cleaning up dregs in the grouting holes, and then adopting a protective measure to protect the grouting holes;
6) distributing a nozzle: installing a grouting pipe in the drilled grouting hole, so that no gap exists between the periphery of a grouting nozzle of the grouting pipe and the grouting hole, water is not leaked, and loosening is avoided during high-pressure grouting;
7) preparing slurry: preparing grouting liquid, and mixing cement and water according to the proportion of the grouting liquid, wherein the proportion of cement and water is 0.8-1.2: stirring for 20-25 minutes at a ratio of 0.8-1.2, and simultaneously mixing water and the multifunctional high-strength water-based grouting agent according to the weight ratio of 48-53: stirring for 5-10 minutes at a ratio of 0.9-1.3;
8) grouting: after pressure testing, grouting slurry into the grouting holes, gradually grouting from one side of an outer wall construction joint to the other side when grouting slurry, adopting a multi-time supplementary grouting mode to enable the slurry to be tightly combined with earth and stones, stopping grouting until grouting pressure changes smoothly, closing a valve on a grouting pipe, and grouting adjacent grouting holes;
9) consolidation: waiting for the slurry to solidify;
10) removing the nozzle: after grouting is finished, after observation for a period of time, cutting off the redundant grouting pipes which exceed the ground after the leakage stopping effect is achieved.
2. The basement exterior wall construction joint leaking stoppage grouting and reinforcement construction method according to claim 1, characterized in that: in the step 4), during drilling, a concrete core drilling machine is adopted to drill a grouting hole with the aperture of 75-83 mm firstly and then drill a grouting hole with the aperture of 45-53 mm.
3. The basement exterior wall construction joint leaking stoppage grouting and reinforcement construction method according to claim 1, characterized in that: the pipe wall of grout pipe is provided with little grout hole, and still is provided with the valve on the grout pipe.
4. The basement exterior wall construction joint plugging grouting and reinforcing construction method according to claim 1, 2 or 3, characterized in that: the multifunctional high-strength water-based grouting agent is prepared from the following components in parts by mass of 0.8-1.2: 0.2-0.8: 0.04-0.06: 0.03 to 0.08: 0.03-0.05 of water glass, sodium aluminate, modified waterborne epoxy resin, barium acrylate and a curing agent.
5. The basement exterior wall construction joint plugging grouting and reinforcing construction method according to claim 1, 2 or 3, characterized in that: in the step 8), a hydraulic double-liquid grouting pump is adopted during pressure testing, and the pressure testing is carried out within a structure pressure-bearing range; when the perfusion is carried out, the perfusion pressure is 1-2.5 MPa.
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| CN114607170A (en) * | 2022-03-21 | 2022-06-10 | 安徽欣生防水工程有限公司 | Seam leakage stopping and reinforcing method for roof |
| CN117209235A (en) * | 2023-11-09 | 2023-12-12 | 中铁四局集团第三建设有限公司 | Slurry and construction joint grouting method suitable for reverse construction method structure |
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Application publication date: 20201023 |