CN113699978B - Anti-settling grouting process - Google Patents
Anti-settling grouting process Download PDFInfo
- Publication number
- CN113699978B CN113699978B CN202110991199.9A CN202110991199A CN113699978B CN 113699978 B CN113699978 B CN 113699978B CN 202110991199 A CN202110991199 A CN 202110991199A CN 113699978 B CN113699978 B CN 113699978B
- Authority
- CN
- China
- Prior art keywords
- grouting
- sealing plate
- grouting hole
- hole
- side wall
- 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.)
- Active
Links
Images
Classifications
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/02—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers specially adapted for placing or removing bulkheads
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
-
- 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
- E02D5/22—Piles
- E02D5/223—Details of top sections of foundation piles
-
- 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
- E02D5/22—Piles
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Abstract
The utility model belongs to the technical field of foundation construction and specifically relates to a subside-preventing grouting process has solved the filling thick liquid and has solidified the back in the slip casting hole, has the probability of subsiding downwards or to the side, the not convenient for problem of the follow-up construction and the use of soil matrix, and it includes drilling, arranges the soil sediment, puts into steel reinforcement cage and closing plate, slip casting, takes out steel reinforcement cage and closing plate, puts into the reinforcing bar, filling thick liquid solidifies the step such as. This application has and reduces and fills the thick liquid and topple over the probability that subsides downwards or to the side after the downthehole solidification of slip casting, makes things convenient for the effect that the follow-up construction of soil matrix used.
Description
Technical Field
The application relates to the field of foundation construction, in particular to an anti-settling grouting process.
Background
Along with the development of economy, the traffic system of China is more and more developed, various roads extend outwards to be connected, convenience is brought to traveling and living of people, in road construction, the roads can not pass through areas with poor soil quality, in order to guarantee the support of the roads to vehicles and pedestrians, grouting holes are usually dug in soil foundations, filling slurry is injected into the grouting holes, after the filling slurry is condensed, hard pile-shaped bodies can be formed, and the strength and the stability of the soil foundations are enhanced.
In view of the above-mentioned related technologies, the inventor believes that there is a defect that the filling slurry has a probability of settling downwards or sideways after being solidified in the grouting hole, which is inconvenient for subsequent construction and use of the soil foundation.
Disclosure of Invention
In order to reduce the probability that the filling slurry is downwards or is toppled over to the side after the filling slurry is solidified in the grouting hole, the subsequent construction of making things convenient for the soil matrix to use, the application provides a settlement-preventing grouting process.
The anti-settling grouting process provided by the application adopts the following technical scheme:
an anti-settling grouting process comprises the following steps:
step1, selecting a position with loose soil layer, drilling vertically downwards by adopting a drilling machine such as a rotary drilling machine, rotating outwards after drilling a certain distance, and taking out and cleaning the soil dug out of the drill hole;
step2, after drilling downwards to a preset depth, cleaning the bottom of the grouting hole and discharging soil residues;
step3, placing a reinforcement cage with a proper size into a grouting hole, enabling the outer wall of the reinforcement cage to be tightly attached to the inner wall of the grouting hole, arranging a sealing plate in the bottom end of the reinforcement cage, communicating a grouting pipe with the sealing plate, communicating the grouting pipe with a grouting machine storing grouting liquid, conveying the grouting liquid into the grouting hole below the sealing plate by the grouting machine through the grouting pipe, filling the space between the sealing plate and the bottom of the grouting hole, and continuously conveying the grouting liquid to enable the grouting liquid to permeate into a soil layer from the side wall of the grouting hole;
step4, after filling the filling slurry between the sealing plate and the bottom of the grouting hole, moving the sealing plate upwards to increase the distance between the sealing plate and the bottom of the grouting hole, continuously conveying the filling slurry to the lower part of the sealing plate, filling the space between the sealing plate and the bottom of the grouting hole again until the liquid level of the filling slurry is flush with the top edge of the grouting hole, and taking the reinforcement cage and the sealing plate out of the grouting hole;
step5, inserting reinforcing steel bars for reinforcement into the filling slurry, limiting the reinforcing steel bars for reinforcement through foam boards or a plurality of reinforcing steel bars which are staggered transversely and longitudinally, and fixing the reinforcing steel bars for reinforcement in the solidified filling slurry;
and Step6, covering a layer of fine aggregate concrete on the surface of the solidified filling slurry, and filling the surface of the solidified filling slurry to be level, namely finishing the anti-settling grouting of one grouting hole.
By adopting the technical scheme, the vertical grouting hole is dug by the drilling machine, the bottom of the grouting hole is cleaned up, the filling grout is conveniently injected into the grouting hole, the strength of the solidified filling grout is prevented from being influenced by soil blocks, the stability of the side wall of the grouting hole is improved by arranging the reinforcement cage in the grouting hole, the filling grout in the grouting machine is conveniently injected into the bottom of the grouting hole and the sealing plate by connecting the sealing plate on the grouting pipe and arranging the sealing plate in the reinforcement cage, the filling grout gradually penetrates into the soil layer of the side wall of the grouting hole after the bottom of the grouting hole and the sealing plate are filled, the bonding range of the grouting hole after grouting is enlarged, the probability that the filling grout in the grouting hole is downwards or laterally toppled and settled after being solidified is reduced, the filling grout is conveniently gradually filled into the grouting hole by gradually moving the sealing plate upwards, and the reinforcing steel bar is inserted into the grouting hole filled with the filling grout, the strength of the solidified filling slurry is enhanced, and the anti-settling effect after grouting is improved.
Optionally, Step1, keeping the bottom of the drill bit of the drilling machine wet, comprises the following steps:
step1A, when the drill bit of the drilling machine rotates to the outside of the grouting hole and soil dug out of the drill hole is cleaned, water is injected to the bottom of the grouting hole until the bottom of the grouting hole is wet, so that the drill bit of the drilling machine keeps wet and cool when drilling downwards.
By adopting the technical scheme, the drill bit is convenient to keep moist in the drilling process, the drill bit is cooled, and the heating and abrasion degree of the drill bit in the drilling process is reduced.
Optionally, Step1, keeping the side wall of the grouting hole dug by the drilling hole wet, includes the following steps:
step1B, in the process of drilling downwards by the drilling machine, spraying slurry to the side wall of the grouting hole by using a rotary spray head to wet the formed side wall of the grouting hole and form a protective wall, so as to prevent soil blocks on the side wall of the grouting hole from falling and collapsing.
By adopting the technical scheme, the soil layer of the side wall of the grouting hole is protected by the retaining wall which is formed by bonding after wetting, the probability that the soil of the side wall of the grouting hole drops in the downward drilling process is reduced, and the drilling of the drill bit into the grouting hole is facilitated.
Optionally, Step2, the method for improving the compactness of the soil layer at the bottom of the grouting hole comprises the following steps:
and Step2A, tamping the bottom of the grouting hole downwards by using a tamper to ensure that the bottom of the grouting hole reaches a certain compactness.
By adopting the technical scheme, the compactness of the bottom of the grouting hole is improved, the probability that filling slurry in the grouting hole settles downwards after solidification is reduced, and the anti-settling effect of a soil layer after grouting is improved.
Optionally, Step2, cleaning the retaining wall of the sidewall of the grouting hole includes the following steps:
and Step2B, scraping the protective wall formed by the mud on the side wall of the grouting hole and cleaning the protective wall to the outside of the grouting hole to expose the soil layer on the side wall of the grouting hole.
By adopting the technical scheme, the looseness of the soil layer on the side wall of the grouting hole is improved, the infiltration of the filling slurry into the side wall of the grouting hole is facilitated, and the speed and the depth of the filling slurry infiltrating into the side wall of the grouting hole are improved.
Optionally, in Step3, the method for improving the sealing property between the sealing plate and the side wall of the grouting hole includes the following steps:
and Step3A, connecting an elastic gasket to the outer edge of the sealing plate, and filling gaps among the sealing plate, the side wall of the grouting hole and the reinforcement cage with the elastic gasket to prevent the filling slurry from overflowing upwards from the gap between the sealing plate and the side wall of the grouting hole when the filling slurry is conveyed to the lower part of the sealing plate.
Through adopting above-mentioned technical scheme, improved the leakproofness between closing plate and steel reinforcement cage and slip casting hole lateral wall, made things convenient for the slip casting machine to the closing plate and the slip casting between the slip casting hole bottom to and the infiltration of filling thick liquid to the slip casting hole lateral wall.
Optionally, in Step3, the method for improving the stability of the connection between the sealing plate and the reinforcement cage includes the following steps:
step3B, the outer edge of the sealing plate is provided with an embedding groove which is matched with the steel bar of the steel bar cage in an embedding way, and the sealing plate and the steel bar cage are connected in an embedding way through a plurality of embedding grooves, so that the sealing plate is prevented from being separated from the steel bar cage in the grouting process.
Through adopting above-mentioned technical scheme, improved the stability of being connected between closing plate and steel reinforcement cage, reduced the closing plate and the probability that the steel reinforcement cage breaks away from under the thrust of filling thick liquid, guaranteed the filling thick liquid to the downthehole injection of slip casting and to the normal clear of the infiltration of slip casting hole lateral wall.
Optionally, Step3, the method for increasing the pressure applied to the filling slurry during grouting includes the following steps:
step3C, after the space between the sealing plate and the bottom of the grouting hole is filled with the filling slurry, the sealing plate is moved downwards, and the filling slurry below the sealing plate is further extruded into the soil layer on the side wall of the grouting hole.
Through adopting above-mentioned technical scheme, made things convenient for and will be full of the filling thick liquid downward extrusion between closing plate and the injected hole bottom for the speed and the degree of depth of filling thick liquid to the soil layer infiltration of injected hole lateral wall, increased the scope and the intensity of slip casting cemented soil layer.
Optionally, Step4, reducing damage to the sidewall of the grouting hole when the sealing plate moves upwards, includes the following steps:
step4A, connecting a protective cylinder with a smaller radius than the sealing plate on the top surface of the sealing plate, making the outer wall of the protective cylinder tightly attached to the inner wall of the steel reinforcement cage, and resisting the side wall of the grouting hole to prevent the soil on the side wall of the grouting hole from peeling off from the side wall of the grouting hole.
By adopting the technical scheme, the loose soil layer of the side wall of the grouting hole is conveniently blocked by the protective cylinder, the protective cylinder is convenient to maintain the side wall of the grouting hole, and the soil layer is prevented from being scraped off when the sealing plate moves upwards.
Optionally, in Step4, the reinforcement cage and the sealing plate are synchronously taken out, including the following steps:
step4B, after the space between the sealing plate and the bottom of the grouting hole is filled with the grouting liquid, the reinforcement cage is lifted upwards, and the sealing plate is driven to move upwards.
Through adopting above-mentioned technical scheme, made things convenient for taking out of steel reinforcement cage and closing plate, prevented that the steel reinforcement cage from being infected with and filling the thick liquid too much, make things convenient for the removal of closing plate to leakproofness when having guaranteed the closing plate and removing.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the vertical grouting holes are dug by a drilling machine, the bottoms of the grouting holes are cleaned up, the filling grout can be conveniently injected into the grouting holes, the strength of the filling grout after solidification is prevented from being influenced by soil blocks, the stability of the side walls of the grouting holes is improved by arranging a reinforcement cage in the grouting holes, the filling grout in a grouting machine can be conveniently injected into the bottoms of the grouting holes and the sealing plates by connecting the sealing plates to the grouting pipes and arranging the sealing plates in the reinforcement cage, the filling grout gradually penetrates into soil layers on the side walls of the grouting holes after the bottoms of the grouting holes and the sealing plates are filled, the bonding range of the grouting holes after grouting is enlarged, the probability that the filling grout in the grouting holes topples downwards or inclines to settle after solidification is reduced, the filling grout gradually fills the grouting holes by gradually moving the sealing plates upwards, and reinforcing steel bars are inserted into the grouting holes filled with the filling grout, the strength of the solidified filling slurry is enhanced, and the anti-settling effect after grouting is improved;
2. the water is continuously sprayed to the bottom of the grouting hole in the process that the drill bit drills into the grouting hole, so that the drill bit is convenient to moisten and cool, the long-term normal drilling of the drill bit is ensured, the rapid formation of the protective wall of the side wall of the grouting hole is facilitated by spraying the slurry to the side wall of the grouting hole, and soil blocks on the side wall of the grouting hole are prevented from falling off in the drilling process of the grouting hole and are not beneficial to the digging of the grouting hole;
3. after the sealing plate and the bottom of the grouting hole are filled with the filling slurry, the sealing plate is extruded downwards, so that the filling slurry is extruded and permeated into a soil layer of the side wall of the grouting hole conveniently, the permeation speed and the permeation depth of the filling slurry to the side wall of the grouting hole are increased, and the strength and the stability of the grouting hole after grouting are improved.
Drawings
Fig. 1 is a structural schematic diagram of a reinforcement cage and a sealing plate for an anti-settling grouting process according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of a reinforcement cage and a sealing plate for use in an anti-settling grouting process according to an embodiment of the present application.
Description of reference numerals: 1. a reinforcement cage; 2. a sealing plate; 21. a fitting groove; 3. an elastic washer; 4. a grouting pipe; 5. and (4) grouting holes.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses an anti-settling grouting process. Referring to fig. 1 and 2, an anti-settling grouting process comprises the following steps:
step1, selecting a position with loose soil layer, drilling vertically downwards by adopting a drilling machine such as a rotary drilling machine, rotating outwards after drilling a certain distance, and taking out and cleaning the soil dug out of the drill hole;
step1A, when a drill bit of the drilling machine rotates to the outside of the grouting hole 5 and soil dug out of the drill hole is cleaned, water is injected into the bottom of the grouting hole 5 until the bottom of the grouting hole 5 is wet, so that the drill bit of the drilling machine keeps wet and cooled when drilling downwards, the abrasion of the drill bit is reduced, and the drill bit is prevented from being damaged due to overheating;
step1B, in the downward drilling process of the drilling machine, spraying slurry to the side wall of the grouting hole 5 by using a rotary spray head, wetting the formed side wall of the grouting hole 5 and forming a protective wall, preventing soil blocks on the side wall of the grouting hole 5 from falling and collapsing, and facilitating the drilling of the grouting hole 5 by a drill bit;
step2, after drilling downwards to a preset depth, cleaning the bottom of the grouting hole 5 and discharging soil residues to prevent soil blocks from influencing the strength of the solidified filling slurry;
step2A, adopting a tamper to tamper the bottom of the grouting hole 5 downwards to ensure that the bottom of the grouting hole 5 reaches a certain degree of compactness, reducing the downward settlement amplitude of the filling slurry in the grouting hole 5 after solidification, and improving the settlement prevention effect of the soil layer after grouting;
step2B, scraping and cleaning a retaining wall formed by the mud on the side wall of the grouting hole 5 to the outside of the grouting hole 5 to expose the soil layer on the side wall of the grouting hole 5, so that the looseness of the soil layer on the side wall of the grouting hole 5 is improved, the infiltration of the filling slurry into the side wall of the grouting hole 5 is facilitated, and the speed and the depth of the filling slurry infiltrating into the side wall of the grouting hole 5 are improved;
step3, placing a reinforcement cage 1 with a proper size into a grouting hole 5, enabling the outer wall of the reinforcement cage 1 to be tightly attached to the inner wall of the grouting hole 5, improving the stability of the side wall of the grouting hole 5, arranging a sealing plate 2 in the bottom end of the reinforcement cage 1, communicating a grouting pipe 4 on the sealing plate 2, communicating the grouting pipe 4 to a grouting machine storing grouting liquid, facilitating the grouting machine to convey the grouting liquid into the grouting hole 5 below the sealing plate 2 through the grouting pipe 4, filling the space between the sealing plate 2 and the bottom of the grouting hole 5, and continuously conveying the grouting liquid, so that the grouting liquid permeates into a soil layer from the side wall of the grouting hole 5;
step3A, an elastic gasket 3 is connected to the outer edge of the sealing plate 2, the elastic gasket 3 fills gaps between the sealing plate 2 and the side wall of the grouting hole 5 and between the sealing plate and the reinforcement cage 1, the sealing performance between the sealing plate 2 and the side wall of the reinforcement cage 1 and between the sealing plate and the side wall of the grouting hole 5 is improved, and the filling slurry is prevented from overflowing upwards from the gaps between the sealing plate 2 and the side wall of the grouting hole 5 when the filling slurry is conveyed to the lower part of the sealing plate 2, so that the grouting of the grouting machine to the bottom of the sealing plate 2 and the grouting hole 5 and the infiltration of the filling slurry to the side wall of the grouting hole 5 are facilitated;
step3B, the outer edge of the sealing plate 2 is provided with an embedding groove 21 which is matched with the steel bar of the reinforcement cage 1 in an embedding way, the sealing plate 2 and the reinforcement cage 1 are connected in an embedding way through a plurality of embedding grooves 21, the connection stability between the sealing plate 2 and the reinforcement cage 1 is improved, the sealing plate 2 is prevented from being separated from the reinforcement cage 1 in the grouting process, and the filling of the filling slurry into the grouting hole 5 and the infiltration into the side wall of the grouting hole 5 are further facilitated;
step3C, after the space between the sealing plate 2 and the bottom of the grouting hole 5 is filled with the filling slurry, moving the sealing plate 2 downwards, so that the filling slurry below the sealing plate 2 can be conveniently extruded into the soil layer on the side wall of the grouting hole 5, the speed of the filling slurry permeating into the soil layer on the side wall of the grouting hole 5 is increased, the permeation depth is increased, and the strength of the grouting cemented soil layer is improved;
step4, after filling the grouting slurry between the sealing plate 2 and the bottom of the grouting hole 5, moving the sealing plate 2 upwards to increase the distance between the sealing plate 2 and the bottom of the grouting hole 5, continuously conveying the grouting slurry to the lower part of the sealing plate 2, filling the space between the sealing plate 2 and the bottom of the grouting hole 5 again until the liquid level of the grouting slurry is flush with the top edge of the grouting hole 5, and taking the reinforcement cage 1 and the sealing plate 2 out of the grouting hole 5;
step4A, connecting a protective cylinder with a radius smaller than that of the sealing plate 2 on the top surface of the sealing plate 2, enabling the outer wall of the protective cylinder to be tightly attached to the inner wall of the reinforcement cage 1, and resisting the side wall of the grouting hole 5 to prevent loose soil on the side wall of the grouting hole 5 from being peeled off from the side wall of the grouting hole 5;
step4B, after the space between the sealing plate 2 and the bottom of the grouting hole 5 is filled with the filling slurry, lifting the reinforcement cage 1 upwards and driving the sealing plate 2 to move upwards at the same time, so that the sealing performance of the sealing plate 2 during moving is ensured, the reinforcement cage 1 and the sealing plate 2 can be taken out conveniently and simultaneously, and the reinforcement cage 1 is prevented from being infected with the filling slurry and being too much;
step5, inserting reinforcing steel bars for reinforcement into the filling slurry, limiting the reinforcing steel bars for reinforcement through a foam board or a plurality of transversely and longitudinally staggered reinforcing steel bars, fixing the reinforcing steel bars for reinforcement into the solidified filling slurry, further enhancing the strength of the solidified filling slurry and improving the anti-settling effect after grouting;
step6, covering a layer of fine aggregate concrete on the surface of the solidified filling slurry, and filling the surface of the solidified filling slurry to be flush, namely finishing the anti-settling grouting of one grouting hole 5, ensuring the flushing and beautiful appearance of the ground and facilitating the subsequent use of the ground.
The implementation principle of the anti-settling grouting process in the embodiment of the application is as follows: when a hole is drilled downwards in a region to be grouted, water is sprayed to the bottom of a grouting hole 5 through a drill bit rotation gap, so that the drill bit is convenient to moisten, cool and cool, and the normal work of the drill bit is ensured, after the grouting hole 5 is dug and tamped, a reinforcement cage 1 with a sealing plate 2 connected to the bottom of the grouting hole 5 in an embedded mode is arranged in the grouting hole 5, grouting slurry is filled into the bottom of the grouting hole 5 below the sealing plate 2 through a grouting pipe 4 communicated with the sealing plate 2, after the grouting slurry is filled between the sealing plate 2 and the bottom of the grouting hole 5, the reinforcement cage 1 is moved downwards to drive the sealing plate 2 to extrude downwards, the penetration of the grouting slurry into the side wall of the grouting hole 5 is accelerated and deepened, the sealing plate 2 is gradually moved upwards, the grouting slurry and the sealing plate 2 are repeatedly injected downwards until the grouting slurry is flush with the top edge of the grouting hole 5, the reinforcement cage 1 and the sealing plate 2 are taken out, and finally a plurality of reinforcing steel bars are inserted into the grouting hole 5, and the grouting of one grouting hole 5 is completed after the solidification of the filling slurry, so that the strength and the stability of the ground are improved.
The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An anti-settling grouting process is characterized in that: the method comprises the following steps:
step1, selecting a position with a loose soil layer, drilling vertically downwards by adopting a drilling machine, rotating outwards after drilling a certain distance, and taking out and cleaning soil dug out of the drilled hole;
step2, after drilling downwards to a preset depth, cleaning the bottom of the grouting hole (5) and discharging soil residues;
step3, placing a reinforcement cage (1) with a proper size into a grouting hole (5), enabling the outer wall of the reinforcement cage (1) to be tightly attached to the inner wall of the grouting hole (5), arranging a sealing plate (2) in the bottom end of the reinforcement cage (1), communicating a grouting pipe (4) on the sealing plate (2), communicating the grouting pipe (4) to a grouting machine storing grouting liquid, conveying the grouting liquid into the grouting hole (5) below the sealing plate (2) through the grouting pipe (4) by the grouting machine, filling the space between the sealing plate (2) and the bottom of the grouting hole (5), and continuously conveying the grouting liquid to enable the grouting liquid to permeate into a soil layer from the side wall of the grouting hole (5);
step4, after filling the filling slurry between the sealing plate (2) and the bottom of the grouting hole (5), moving the sealing plate (2) upwards to increase the distance between the sealing plate (2) and the bottom of the grouting hole (5), continuously conveying the filling slurry to the lower part of the sealing plate (2), filling the space between the sealing plate (2) and the bottom of the grouting hole (5) again until the liquid level of the filling slurry is flush with the top edge of the grouting hole (5), and taking the reinforcement cage (1) and the sealing plate (2) out of the grouting hole (5);
step5, inserting reinforcing steel bars for reinforcement into the filling slurry, limiting the reinforcing steel bars for reinforcement through foam boards or a plurality of reinforcing steel bars which are staggered transversely and longitudinally, and fixing the reinforcing steel bars for reinforcement in the solidified filling slurry;
and Step6, covering a layer of fine aggregate concrete on the surface of the solidified filling slurry, and filling the surface of the solidified filling slurry to be flush, namely finishing the anti-settling grouting of one grouting hole (5).
2. The anti-settling grouting process according to claim 1, characterized in that: step1, keeping the bottom of the drill bit of the drilling machine wet, comprises the following steps:
step1A, when the drill bit of the drilling machine rotates to the outside of the grouting hole (5) and soil excavated by the drill hole is cleaned, injecting water to the bottom of the grouting hole (5) until the bottom of the grouting hole (5) is wet, so that the drill bit of the drilling machine keeps wet and cool when drilling downwards.
3. The anti-settling grouting process according to claim 1, characterized in that: in Step1, keeping the side wall of a grouting hole (5) dug by drilling wet, the method comprises the following steps:
step1B, in the process of drilling downwards by the drilling machine, spraying slurry to the side wall of the grouting hole (5) by using a rotary spray head to wet the formed side wall of the grouting hole (5) and form a retaining wall, so as to prevent soil blocks on the side wall of the grouting hole (5) from falling and collapsing.
4. The anti-settling grouting process according to claim 1, characterized in that: in Step2, the method for improving the compactness of the soil layer at the bottom of the grouting hole (5) comprises the following steps:
and Step2A, tamping the bottom of the grouting hole (5) downwards by using a tamper to ensure that the bottom of the grouting hole (5) reaches a certain compactness.
5. The anti-settling grouting process according to claim 1, characterized in that: in Step2, cleaning the protective wall of the side wall of the grouting hole (5) comprises the following steps:
and Step2B, scraping the protecting wall formed by the mud on the side wall of the grouting hole (5) and cleaning the protecting wall to the outside of the grouting hole (5) to expose the soil layer on the side wall of the grouting hole (5).
6. The anti-settling grouting process according to claim 1, characterized in that: step3 is a method for improving the sealing property between a sealing plate (2) and the side wall of a grouting hole (5), comprising the steps of:
step3A, an elastic gasket (3) is connected to the outer edge of the sealing plate (2), the elastic gasket (3) fills the gap between the sealing plate (2) and the side wall of the grouting hole (5) as well as the gap between the reinforcing cages (1), and filling slurry is prevented from overflowing upwards from the gap between the sealing plate (2) and the side wall of the grouting hole (5) when the filling slurry is conveyed to the lower part of the sealing plate (2).
7. The anti-settling grouting process according to claim 1, characterized in that: in Step3, the method for improving the stability of the connection between the sealing plate (2) and the reinforcement cage (1) comprises the following steps:
step3B, the outer edge of the sealing plate (2) is provided with an embedding groove (21) which is matched with the steel bar embedding of the steel bar cage (1), the sealing plate (2) and the steel bar cage (1) are embedded and connected through a plurality of embedding grooves (21), and the sealing plate (2) is prevented from being separated from the steel bar cage (1) in the grouting process.
8. The anti-settling grouting process according to claim 1, characterized in that: in Step3, the method for increasing the pressure applied to the filling slurry during grouting comprises the following steps:
and Step3C, after the space between the sealing plate (2) and the bottom of the grouting hole (5) is filled with the filling slurry, moving the sealing plate (2) downwards, and further extruding the filling slurry below the sealing plate (2) into the soil layer on the side wall of the grouting hole (5).
9. The anti-settling grouting process according to claim 1, characterized in that: in Step4, the method for reducing the damage to the side wall of the grouting hole (5) when the sealing plate (2) moves upwards comprises the following steps:
step4A, the top surface of the sealing plate (2) is connected with a protective cylinder with a smaller radius than that of the sealing plate (2), so that the outer wall of the protective cylinder is tightly attached to the inner wall of the reinforcement cage (1), the side wall of the grouting hole (5) is resisted, and soil on the side wall of the grouting hole (5) is prevented from being peeled off from the side wall of the grouting hole (5).
10. The anti-settling grouting process according to claim 1, characterized in that: in Step4, the reinforcement cage (1) and the sealing plate (2) are synchronously taken out, and the method comprises the following steps:
step4B, after the space between the sealing plate (2) and the bottom of the grouting hole (5) is filled with the grouting liquid, the reinforcement cage (1) is lifted upwards, and the sealing plate (2) is driven to move upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991199.9A CN113699978B (en) | 2021-08-26 | 2021-08-26 | Anti-settling grouting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991199.9A CN113699978B (en) | 2021-08-26 | 2021-08-26 | Anti-settling grouting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113699978A CN113699978A (en) | 2021-11-26 |
| CN113699978B true CN113699978B (en) | 2022-08-16 |
Family
ID=78655527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110991199.9A Active CN113699978B (en) | 2021-08-26 | 2021-08-26 | Anti-settling grouting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113699978B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075224B (en) * | 2022-07-12 | 2023-07-07 | 中建八局第一建设有限公司 | Steel-flexible combined multifunctional baffle for prefabricated pipe piles and implementation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444516A (en) * | 1990-06-12 | 1992-02-14 | Tokyu Constr Co Ltd | Grouting method in front end of cast-in place concrete pile |
| CN1540104A (en) * | 2003-10-30 | 2004-10-27 | 北京城建集团有限责任公司 | Post mudjack construction technics for sidewal and bottom of bore of filling pile |
| JP2009036010A (en) * | 2007-07-12 | 2009-02-19 | Shimizu Corp | Method of building subsidence prevention pile and subsidence prevention pile |
| CN106948340A (en) * | 2015-11-22 | 2017-07-14 | 合肥工业大学 | A kind of construction method of the Manual excavated pile structure of high polymer grouting protection |
| CN110896645A (en) * | 2018-08-03 | 2020-03-20 | 高永光 | Pile bottom grouting cavity, using method thereof, cast-in-place pile body and construction method of cast-in-place pile body |
| CN110896646A (en) * | 2018-12-25 | 2020-03-20 | 高永光 | Pile bottom grouting cavity and using method thereof, cast-in-place pile body and construction method thereof |
-
2021
- 2021-08-26 CN CN202110991199.9A patent/CN113699978B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444516A (en) * | 1990-06-12 | 1992-02-14 | Tokyu Constr Co Ltd | Grouting method in front end of cast-in place concrete pile |
| CN1540104A (en) * | 2003-10-30 | 2004-10-27 | 北京城建集团有限责任公司 | Post mudjack construction technics for sidewal and bottom of bore of filling pile |
| JP2009036010A (en) * | 2007-07-12 | 2009-02-19 | Shimizu Corp | Method of building subsidence prevention pile and subsidence prevention pile |
| CN106948340A (en) * | 2015-11-22 | 2017-07-14 | 合肥工业大学 | A kind of construction method of the Manual excavated pile structure of high polymer grouting protection |
| CN110896645A (en) * | 2018-08-03 | 2020-03-20 | 高永光 | Pile bottom grouting cavity, using method thereof, cast-in-place pile body and construction method of cast-in-place pile body |
| CN110896646A (en) * | 2018-12-25 | 2020-03-20 | 高永光 | Pile bottom grouting cavity and using method thereof, cast-in-place pile body and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113699978A (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109457735B (en) | Method for repairing concrete wall and bottom plate water seepage cracks | |
| CN110409359B (en) | Segmented construction method for bottom reservoir of inner-drainage open pit | |
| CN102071607B (en) | Railroad bed repair method without affecting existing running conditions | |
| CN100387785C (en) | Hydraulic sheeting and use method thereof | |
| CN111119128B (en) | Danger-removing, reinforcing and seepage-proofing method for natural rock-fill dam of barrier lake | |
| CN207109475U (en) | It is close to mountain high-filled subgrade stabilization and Deformation control structure | |
| CN109385992B (en) | Construction method for forming hole in artificial stone-filling layer | |
| CN104988815A (en) | Method for treating post-construction settlement disease of railroad bed | |
| CN113699978B (en) | Anti-settling grouting process | |
| CN103806433A (en) | Foundation backfill reinforcement method | |
| CN111705786A (en) | Method for vertical combination construction of composite stratum underground continuous wall and cast-in-situ bored pile | |
| CN107524141B (en) | Construction method of cast-in-situ bored pile of rock soil foundation | |
| CN110374068B (en) | Construction method of drain hole of bottom plate of sluice stilling pool capable of preventing blockage | |
| CN110735441A (en) | Construction method of building pile foundation | |
| CN109812271B (en) | Construction method for shield-crossing limited box culvert | |
| CN104294806B (en) | Excavation, diversion and drainage method for inter-pile water above water-resisting layer of deep foundation pit | |
| CN110373982A (en) | A kind of construction method administered for tunnel road surface infiltration | |
| CN107345483B (en) | Newly-built seepage-proof coal mine shaft and preparation method thereof | |
| CN210086253U (en) | Composite pile structure of water-rich super-thick sand pebble foundation pit | |
| CN113266362B (en) | Top pipe cover excavation construction method for penetrating through existing dense anchor cable area | |
| CN115748786A (en) | Drainage sinking construction method for pipe-jacking circular open caisson | |
| CN108570979A (en) | A kind of construction method for building antiseepage composite foundation on dolomite stratigraph | |
| CN112302678B (en) | Deformation control construction process for shallow tunnel of underpass building | |
| CN113605380A (en) | Construction method of cast-in-situ bored pile | |
| CN210946876U (en) | Barricade reinforced structure convenient to road surface is widened |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |