CN114775351A - Composite grouting pile treatment process for road deep diseases - Google Patents
Composite grouting pile treatment process for road deep diseases Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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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
- E02D33/00—Testing foundations or foundation structures
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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Abstract
The invention provides a treatment process of a composite grouting pile for road deep diseases, and belongs to the technical field of road restoration. The method comprises the following steps of firstly, detecting by adopting a ground penetrating radar, accurately mastering the type and the position of the road diseases, and reasonably customizing a hole site scheme according to defects. The grouting pile of the invention forms a pile by opening a hole in the road surface of the roadbed, pouring cement composite stable broken stone materials to form a deep composite foundation, then injecting inorganic silicon compound slurry into the roadbed and the base layer through the grouting hole, discharging moisture and air in cracks in a filling, penetrating and compacting mode, occupying the space of the roadbed and improving the strength, cementing the original roadbed into a whole through chemical cementing, ion exchange, inert filling and compacting after a period of time to form a new composite supporting pile structure system, thereby reinforcing the roadbed and the base layer; the maintenance time can be 1-3 hours, and the open traffic maintenance time is short.
Description
Technical Field
The invention belongs to the technical field of road restoration, and particularly relates to a treatment process of a composite grouting pile for deep road diseases.
Background
At present, asphalt concrete pavements and cement concrete pavements are the most important pavement forms in China. However, as the load of the vehicle increases, the damage of the overweight of the vehicle to the road surface becomes more and more serious, and the road built in the early stage enters a maintenance stage in advance. Among the numerous road surface diseases, the roadbed disease is the root causing the road surface disease and is the disease which is the most difficult to eradicate. The defects of cracking, settlement, net cracking, cracking and the like of the road surface are mostly caused by deep defects of subgrade void, settlement and the like, the deep defects of the road cause great damage to the road surface structure, the deep defects of the subgrade are treated in time, the maintenance cost can be reduced, the service life of the road is prolonged, and the driving safety is ensured.
The existing grouting maintenance of the road subgrade mostly adopts polymer grouting, although the problem of the road subgrade void can be solved to a certain extent, the existing grouting maintenance of the road subgrade only can stabilize the subgrade soil body, the load bearing capacity of the road surface cannot be reinforced, the further action of the vehicle load can be realized along with the lapse of time, the bonding action can be gradually reduced, the loose property of the un-grouted area of the subgrade is further deepened, the original damage of the road is regenerated, and even new road surface damage occurs.
Disclosure of Invention
The invention aims to provide a treatment process of a composite grouting pile for deep road diseases aiming at the problems in the prior art so as to solve the technical problems of various road diseases.
The purpose of the invention can be realized by the following technical scheme: a composite grouting pile treatment process for road deep diseases comprises the following steps,
the method comprises the following steps that firstly, a ground penetrating radar is adopted for detection, the types and positions of road diseases can be accurately mastered, and then hole site schemes are reasonably customized according to defects;
step two, arranging and marking hole positions, arranging isosceles triangular piles, wherein the isosceles triangular piles comprise holes A and holes B, the diameter of the holes A is larger than that of the holes B, the distance between the holes A and the holes A is 2m, the row spacing is 2m, the distance between the holes B and the holes B is 2m, the row spacing is 2m, the holes B are arranged between every two adjacent holes A in an inserting mode, the distance between the holes A and the holes B is 1m, and the row spacing is 1 m;
drilling and cleaning holes, namely drilling holes A and holes B by adopting drilling equipment along marks arranged on the hole positions, and cleaning the drilled holes;
step four, stirring the cement composite stabilized macadam material, wherein the cementing material is an inorganic silicon compound and cement composite material, and the material can be directly mixed with macadam and water for use; burying a grouting coarse pumping pipe, inserting the grouting coarse pumping pipe into the grouting hole A, and sealing the periphery of the pipe port;
step five, injecting cement composite stable broken stone materials into the hole A, wherein the depth of a working area of the roadbed bearing the load action is generally 80cm below the top surface of the roadbed, and the depth of a grouting pile is required to be at least 80cm deep below the top surface of the roadbed, so that the working area of the roadbed mainly bearing the load can be reinforced, and the roadbed is reinforced to the maximum extent without waste;
step six, sealing the hole A after grouting, and pulling out a grouting rough pumping pipe;
mixing thin slurry, performing inorganic silicon compound grouting reinforcement construction, continuously stirring to obtain slurry, testing fluidity after stirring is finished, and grouting the hole B after the fluidity is qualified;
step eight, stably grouting a soil body, namely injecting the thin slurry into a roadbed through grouting thin tubes, wherein the roadbed reinforcement depth is set to be 1.5m, and the grouting pressure is controlled to be 0.3-0.5 MPa;
grouting and repairing the base course, wherein the reinforcing depth of the base course penetrates through the base course of the pavement to reach a roadbed supporting layer;
step ten, sealing the hole B, plugging the grouting hole B after grouting is finished, pulling out the grouting tubules, and completely flushing the tube cores and the outer walls of the tubes for storage after the grouting tubules are pulled out;
step eleven, curing, namely covering the roadbed, preserving moisture and curing, covering the concrete by using plastic cloth, and opening the traffic after curing for 1-3 h.
By adopting the technical scheme, the grouting pile forms a pile by opening a hole in the road surface of the roadbed, cement composite stable broken stone materials are poured into the pile to form a deep composite foundation, then inorganic silicon compound slurry is poured into the roadbed and the base layer through the grouting hole, water and air in cracks are discharged in a filling, penetrating and compacting mode, and the space is occupied, so that the pore ratio is reduced, the strength is improved, after a period of time, the original roadbed is cemented into a whole through the functions of chemical cementation, ion exchange, inert filling and compacting to form a new composite supporting pile structure system, and the roadbed and the base layer are reinforced; the maintenance time can be opened within 1-3 hours, the traffic maintenance time can be opened under special conditions, the maintenance time is short, and the road traffic is not influenced.
In the process for treating the road deep disease composite grouting pile, in the fourth step, the cement composite stable macadam material comprises 0.04 part of inorganic silicon compound, 0.03 part of cement, 0.88 part of macadam and 0.05 part of water in a construction mixing ratio.
In the treatment process of the road deep disease composite grouting pile, the inorganic silicon compound grouting reinforcement construction mixing proportion in the seventh step is 1 part of ultrafast inorganic silicon compound, 0.5 part of inorganic silicon compound curing agent and 0.32-0.35 part of water.
In the treatment process of the road deep disease composite grouting pile, in the eighth step, when the maximum grouting pressure exceeds 0.5MPa, grouting is immediately stopped and grouting is performed again, and if the maximum grouting pressure still exceeds 0.5MPa, the grouting is finished.
In the treatment process of the composite grouting pile for the road deep disease, grouting slurry in the eighth step is distributed, crossed and overlapped in a range from the width of the road surface to 80cm below the road surface to form integral strength, and holes are distributed along cracks if the cracks are met; if the position of the cloth holes is found to be not suitable, the hole positions can be adjusted properly, and the distance between the hole positions should be smaller than 30 cm.
In the treatment process of the road deep disease composite grouting pile, in the grouting process in the step eight, if slurry flees, the hole distance needs to be increased, the interval of the construction time of two adjacent sequential holes is prolonged, so that after the slurry of the hole in the previous sequence is basically solidified or has certain strength, the subsequent drilling is started, and if the slurry fleeing hole is a hole to be groud, the simultaneous parallel grouting method is adopted for treatment; and if the slurry mixing hole is drilled, stopping drilling and sealing the hole, and recovering after grouting.
By adopting the technical scheme, the pile column type grouting pile can be used for roadbed reinforcement and base layer deep layer repair, can be well mixed with base layer materials, can re-bond a newly-built road and a loose base layer of an original road, and forms a new composite supporting pile with a roadbed-pile foundation structure system; therefore, the strength of the roadbed material is improved, the roadbed material can be better fused with soil, and the bearing capacity of soft soil is improved.
In the treatment process of the road deep disease composite grouting pile, if grouting occurs in the grouting process of the step eight, grouting pressure needs to be reduced, and meanwhile, the slurry concentration is increased; limiting grouting and controlling unit slurry suction amount; and (3) an intermittent grouting method, namely stopping grouting after grout is emitted, and grouting after about 15 min.
By adopting the technical scheme, after the grouting pile is adopted for grouting reinforcement, the defect or weak part of the road base is reinforced, the bearing capacity is improved, the slurry has high strength, large fluidity and good groutability, and has good cohesiveness, and particularly has more outstanding cohesiveness for various alkaline materials.
In the treatment process of the road deep disease composite grouting pile, the grouting pile in the fifth step is made of cement composite stable broken stone materials, the depth of the grouting pile is 180cm, the vertical load of a roadbed structure is borne, and the grouting pile and the grouting stable layer in the eighth step form a composite support pile structure system together.
In the above-mentioned road deep disease composite grouting pile treatment process, the aperture of the hole A in the second step is 140-160mm, and the aperture of the hole B is 40-60 mm. Preferably, the aperture of the hole A is 150mm, and the aperture of the hole B is 50 mm.
In the treatment process of the road deep disease composite grouting pile, the crushed stone material in the fourth step is graded crushed stone with the grain diameter of 0-13.2 mm.
Compared with the prior art, the invention has the following advantages:
1. the grouting pile of the invention forms a pile by opening a hole in the road surface of the roadbed, fills cement composite stable broken stone materials to form a deep composite foundation, then mixes 1 part of ultrafast inorganic silicon compound, 0.5 part of ultrafast inorganic silicon compound curing agent and 0.32-0.35 part of water, continuously stirs the slurry, injects the slurry into the roadbed and the base layer through a grouting hole, discharges water and air in cracks in a filling, penetrating and compacting mode, occupies the space, reduces the void ratio and improves the strength, and after a period of time, cements the original roadbed into a whole through the actions of chemical cementation, ion exchange, inert filling and compacting compaction to form a new composite supporting pile structure system, thereby reinforcing the roadbed and the base layer; the maintenance time can be short within 1-3 hours, the traffic can be opened while the traffic is opened under special conditions, the maintenance time is short, and the road traffic is not influenced;
2. according to the invention, the ultrafast inorganic silicon compound slurry can be well mixed with the base material, and can re-bond the loose base of a newly-built road and an original road, so that the strength of the base can be improved, the loose base can be better fused with soil, the bearing capacity of soft soil can be improved, the fluidity is better, and the grouting material has better water retention performance and volume stability under pressure;
3. according to the method, the ground penetrating radar is adopted for detection before construction, so that the defects and the trend of the cracks of the roadbed can be accurately mastered, then the scheme is reasonably customized according to the defects, and meanwhile, pipelines in the ground can be detected, so that the pipelines are prevented from being damaged, and the method is worry-saving, time-saving and labor-saving;
4. the novel sound absorption and insulation material is added into the slurry, the raw material of the sound insulation material contains melamine resin, the melamine resin is a three-dimensional net structure with high open pores, the opening rate is 99 percent, the slurry can be filled with the interconnected tiny small pores after being cured, a large amount of noise can be absorbed and consumed in a short time, and the noise reduction effect is good.
Drawings
FIG. 1 is a schematic diagram of performance indexes of an ultrafast inorganic silicon compound grouting material of the present invention;
FIG. 2 is a schematic diagram of the arrangement of the hole sites of the road grouting piles according to the present invention;
FIG. 3 is a schematic elevation view of a grouted borehole of the present invention;
FIG. 4 is a schematic view of the present invention before repair of the road bed;
FIG. 5 is a schematic view of a repaired road bed according to the present invention;
fig. 6 is a schematic elevation of the pile of the present invention.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-6, a composite grouting pile treatment process for road deep diseases comprises the following steps:
the method comprises the following steps that firstly, a ground penetrating radar is adopted for detection, the types and positions of road diseases can be accurately mastered, and then hole site schemes are reasonably customized according to defects;
step two, arranging and marking hole positions, and arranging isosceles triangular piles, wherein the isosceles triangular piles comprise holes A and holes B, the diameter of the holes A is larger than that of the holes B, the distance between the holes A and the holes A is 2m, the row spacing is 2m, the hole diameter of the hole A is selected to be 150mm, the distance between the hole B and the hole B is 2m, the row spacing is 2m, the hole diameter of the hole B is selected to be 50mm, the holes B are arranged between every two adjacent holes A in an inserting mode, the distance between the holes A and the holes B is 1m, and the row spacing is 1 m;
drilling and cleaning holes, namely drilling holes A and B by adopting drilling equipment along marks arranged on the holes, and cleaning the drilled holes;
step four, mixing cement composite stabilized macadam materials, wherein the cementing materials are inorganic silicon compounds and cement composite materials, the materials can be directly mixed with macadam and water for use, the macadam materials are graded macadams with the particle size of 0-13.2mm, and the reinforcing and matching ratio of the roadbed grouting piles is shown in table 1; burying a grouting coarse pumping pipe, inserting the grouting coarse pumping pipe into the grouting hole A, and sealing the periphery of the pipe port;
table 1 roadbed grouting pile reinforcement proportion (by weight)
Step five, cement composite stabilized macadam materials are injected into the hole A, the depth of a working area of the roadbed bearing the load action is generally 80cm below the top surface of the roadbed, and the depth of a grouting pile is required to be at least 80cm deep below the top surface of the roadbed, so that the working area of the roadbed mainly bearing the load can be reinforced, and the roadbed is reinforced to the maximum extent without waste;
step six, sealing the hole A, plugging the hole A after grouting is finished, and pulling out the grouting rough pumping pipe;
mixing dilute slurry, performing inorganic silicon compound grouting reinforcement construction, continuously stirring the slurry to prepare ultrafast inorganic silicon compound grouting reinforcement construction matching ratio shown in table 2, performing fluidity test after stirring is finished, and grouting the hole B after the slurry is qualified;
TABLE 2 ultra-fast inorganic silicon compound grouting reinforcement construction mixing proportion
Step eight, stably grouting soil, namely grouting dilute slurry into a roadbed through grouting thin pipes, wherein the reinforcing depth of the roadbed is set to be 1.5m, and the grouting pressure is controlled to be 0.3-0.5 MPa;
grouting and repairing the base course, wherein the reinforcing depth of the base course penetrates through the base course of the pavement to reach a roadbed supporting layer;
step ten, sealing the hole B, plugging the hole B after grouting, pulling out the grouting tubule, and washing the tube core and the outer wall of the tube to be clean for storage after the grouting tubule is pulled out;
step eleven, curing, namely covering the roadbed, preserving moisture and curing, covering the concrete by using plastic cloth, and opening the traffic after curing for 1-3 h.
By adopting the technical scheme, the grouting pile forms a pile by opening a hole in the road surface of the roadbed, cement composite stable broken stone materials are poured into the pile to form a deep composite foundation, then inorganic silicon compound slurry is poured into the roadbed and the base layer through the grouting hole, water and air in cracks are discharged in a filling, penetrating and compacting mode, and the space is occupied, so that the pore ratio is reduced, the strength is improved, after a period of time, the original roadbed is cemented into a whole through the functions of chemical cementation, ion exchange, inert filling and compacting to form a new composite supporting pile structure system, and the roadbed and the base layer are reinforced; the maintenance time can be opened within 1-3 hours, the traffic maintenance time can be opened under special conditions, the maintenance time is short, and the road traffic is not influenced.
And in the fifth step, the grouting pile is made of cement composite stabilized macadam materials, the depth of the grouting pile is 180cm, the grouting pile bears the vertical load of the roadbed structure, and the grouting pile and the grouting stabilizing layer in the eighth step form a composite support pile structure system together.
Step eight, when the maximum grouting pressure exceeds 0.5MPa, grouting is stopped immediately, grouting is carried out again, and if the maximum grouting pressure still exceeds 0.5MPa, grouting is finished at the time.
Step eight, slurry is distributed, crossed and overlapped within 80cm from the width of the pavement to the position below the pavement to form integral strength, and holes are distributed along the crack if the crack is met; if the position of the cloth holes is found to be not suitable, the hole positions can be properly adjusted, and the distance between the hole positions should be less than 30 cm.
In the grouting process of the step eight, if slurry flees, the hole distance needs to be increased, the interval of the construction time of two adjacent sequential holes is prolonged, after the slurry of the hole in the previous sequence is basically solidified or has certain strength, the subsequent sequential drilling is started, and if the serial slurry hole is a hole to be grouted, the simultaneous parallel grouting method is adopted for processing; and if the slurry mixing hole is drilled, stopping drilling and sealing the hole, and recovering after grouting is finished. Pile column type grouting piles are used for roadbed reinforcement and base layer deep layer repair, can be well mixed with base layer materials, can re-bond a newly-built road and a loose base layer of an original road, and form a new composite supporting pile with a roadbed-pile foundation structure system; therefore, the strength of the roadbed material is improved, the roadbed material can be better fused with soil, and the bearing capacity of soft soil is improved.
Step eight, if slurry overflows in the grouting process, the grouting pressure needs to be reduced, and the slurry concentration is increased; limiting grouting, and controlling unit slurry suction amount; and (3) an intermittent grouting method, namely stopping grouting after grout is emitted, and grouting after about 15 min. After the grouting pile is adopted for grouting reinforcement, the defect or weak part of the road base is reinforced, the bearing capacity is improved, the slurry has high strength, large fluidity and good groutability, and has good cohesiveness, and particularly has more outstanding cohesiveness for various alkaline materials.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (10)
1. A road deep disease composite grouting pile treatment process is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps of firstly, detecting by adopting a ground penetrating radar, accurately mastering the types and positions of road diseases, and reasonably customizing a hole site scheme according to defects;
step two, arranging and marking hole positions, arranging isosceles triangular piles, wherein the isosceles triangular piles comprise holes A and holes B, the diameter of the holes A is larger than that of the holes B, the distance between the holes A and the holes A is 2m, the row spacing is 2m, the distance between the holes B and the holes B is 2m, the row spacing is 2m, the holes B are arranged between every two adjacent holes A in an inserting mode, the distance between the holes A and the holes B is 1m, and the row spacing is 1 m;
drilling and cleaning the holes, namely drilling the holes A and B by adopting drilling equipment along the marks arranged on the hole positions, and cleaning the drilled holes;
step four, stirring the cement composite stabilized macadam material, wherein the cementing material is an inorganic silicon compound and cement composite material, and the material, the macadam and water can be directly mixed for use; burying a grouting coarse pumping pipe, inserting the grouting coarse pumping pipe into the grouting hole A, and sealing the periphery of the pipe orifice;
step five, cement composite stabilized macadam materials are injected into the hole A, the depth of a working area of the roadbed bearing the load action is generally 80cm below the top surface of the roadbed, and the depth of a grouting pile is required to be at least 80cm deep below the top surface of the roadbed, so that the working area of the roadbed mainly bearing the load can be reinforced, and the roadbed is reinforced to the maximum extent without waste;
step six, sealing the hole A after grouting, and pulling out a grouting rough pumping pipe;
mixing thin slurry, performing inorganic silicon compound grouting reinforcement construction, continuously stirring to obtain slurry, testing fluidity after stirring is finished, and grouting the hole B after the fluidity is qualified;
step eight, stably grouting soil, namely grouting dilute slurry into a roadbed through grouting thin pipes, wherein the reinforcing depth of the roadbed is set to be 1.5m, and the grouting pressure is controlled to be 0.3-0.5 MPa;
grouting and repairing the base course, wherein the reinforcing depth of the base course penetrates through the base course of the pavement to reach a roadbed supporting layer;
step ten, sealing the hole B, plugging the grouting hole B after grouting is finished, pulling out the grouting tubules, and completely flushing the tube cores and the outer walls of the tubes for storage after the grouting tubules are pulled out;
step eleven, curing, namely covering the roadbed, preserving moisture and curing, covering the concrete by using plastic cloth, and opening the traffic after curing for 1-3 h.
2. The composite grouting pile treatment process for the road deep disease according to claim 1, characterized in that the cement composite stabilized macadam material in the fourth step is prepared from 0.04 parts of inorganic silicon compound, 0.03 parts of cement, 0.88 parts of macadam and 0.05 parts of water.
3. The treatment process of the composite grouting pile for the road deep disease according to claim 1, wherein the inorganic silicon grouting reinforcement construction mixture ratio in the seventh step is 1 part of ultrafast inorganic silicon, 0.5 part of inorganic silicon curing agent and 0.32-0.35 part of water.
4. The treatment process for the composite grouting pile for the road deep disease according to claim 1, characterized in that in the eighth step, when the maximum grouting pressure exceeds 0.5MPa, grouting is stopped immediately and then grouting is carried out again, and if the maximum grouting pressure still exceeds 0.5MPa, the grouting is finished.
5. The composite grouting pile treatment process for the road deep disease according to claim 1, wherein the slurry in the eight steps is distributed and overlapped in a cross way within 80cm from the width of the road surface to the position below the road surface to form an integral strength, and holes are distributed along cracks if the cracks are met; if the position of the cloth holes is found to be not suitable, the hole positions can be properly adjusted, and the distance between the hole positions should be less than 30 cm.
6. The treatment process of the composite grouting pile for the road deep disease according to claim 1, characterized in that in the grouting process of the step eight, if slurry flees, the hole distance needs to be increased, the interval of the construction time of two adjacent sequential holes is prolonged, after the slurry in the hole in the previous sequence is basically solidified or has certain strength, the subsequent drilling is started, and if the slurry fleeing hole is a hole to be groud, the simultaneous parallel grouting method is adopted for treatment; and if the slurry mixing hole is drilled, stopping drilling and sealing the hole, and recovering after grouting.
7. The treatment process for the composite grouting pile for the road deep disease according to claim 1, wherein in the eight-step grouting process, if grout overflows, grouting pressure needs to be reduced, and grout concentration is increased; limiting grouting and controlling unit slurry suction amount; and (3) an intermittent grouting method, namely stopping grouting after grout is overflowed, and grouting after about 15 min.
8. The process of claim 1, wherein the grouting pile in the fifth step is made of cement composite stabilized macadam materials, has a depth of 180cm, bears the vertical load of a roadbed structure, and forms a composite supporting pile structure system together with the grouting stabilizing layer in the eighth step.
9. The composite grouting pile treatment process for the road deep disease according to claim 1, wherein the aperture of the hole A in the step two is 140-160mm, and the aperture of the hole B is 40-60 mm.
10. The composite grouting pile treatment process for the road deep disease according to claim 1, characterized in that graded macadam with the grain diameter of 0-13.2mm is adopted as the macadam material in the fourth step.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070118565A (en) * | 2007-11-01 | 2007-12-17 | (주)청조엔지니어링 | A method of construction for mending road |
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| KR20070118565A (en) * | 2007-11-01 | 2007-12-17 | (주)청조엔지니어링 | A method of construction for mending road |
| US20140314497A1 (en) * | 2013-04-18 | 2014-10-23 | Henan Polytech Infrastructure Rehabilitation LTD. | Polymer grouting method for constructing gravel pile |
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