CN110258192A - The construction method of high-speed rail route roadbed karst collapse - Google Patents
The construction method of high-speed rail route roadbed karst collapse Download PDFInfo
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- CN110258192A CN110258192A CN201910482035.6A CN201910482035A CN110258192A CN 110258192 A CN110258192 A CN 110258192A CN 201910482035 A CN201910482035 A CN 201910482035A CN 110258192 A CN110258192 A CN 110258192A
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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
- C04B28/04—Portland cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- 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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
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- Architecture (AREA)
- Soil Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of construction method of high-speed rail route roadbed karst collapse, which fills karst collapse using the method for slip casting is punched on road shoulder, not destroy the normal operation of railway, guarantees normal traffic；And it is alternately laid in the first row injected hole close to roadbed setting using the first injected hole and the second injected hole, and first injected hole perpendicular to road bed, the central axes of second injected hole and the drift angle of the vertical line perpendicular to road bed are 30 °, solve the construction technology problem for not having and carrying out regulation condition right above Business Line.
Description
Technical field
The present invention relates to highway construction fields.It is more particularly related to a kind of high-speed rail route roadbed karst collapse
Construction method.
Background technique
With the rapid development of China express railway, railway network nationwide brings pole to the trip of people
Big convenience.But it is widely distributed in Southwestern China In Limestone Area, precipitation is abundant in addition, and karst is especially developed.Business Line is high
The main reason of fast railway karst collapse is artificial karst collapse, i.e., due to human activity, such as draws water, drainage of foundation pit, ground infiltration
A series of activities such as leakage, water storage and load, train vibration, explosion, accelerate the activity of underground water, change soil cave from steady item
Part causes soil cave to expand, soil cave cap rock unstability, so that the acceleration of karst collapse be facilitated to generate and develop, drives a vehicle to high-speed railway
Safety hazard is serious.High-speed railway Business Line roadbed pavement planer has its particularity, and management is tight, risk is big, difficulty is high, effect
It is low, do not have the execution conditions renovated right above Business Line especially.These factors give treatment construction band in practice
A series of poly-talented problems are carried out.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is an object of the present invention to provide a kind of construction method of high-speed rail route roadbed karst collapse, which is adopted
Karst collapse is filled with the method for slip casting is punched on road shoulder, not destroy the normal operation of railway, guarantees normal traffic；
And it is alternately laid in the first row injected hole close to roadbed setting using the first injected hole and the second injected hole, and the first injected hole
Perpendicular to road bed, the drift angle of the central axes of the second injected hole and the vertical line perpendicular to road bed is 30 °, is solved not
Has the construction technology problem that regulation condition is carried out right above Business Line.
In order to realize purposes and other advantages according to the present invention, a kind of applying for high-speed rail route roadbed karst collapse is provided
Work method, comprising the following steps:
S1, use green mesh sheet that security isolation construction area is set on existing line road shoulder, and on existing roadbed side slope
Full framing platform is set up with steel pipe；
S2, the part of path for having shoulder protector lay the length with route from inside to outside at the road shoulder slope foot away from route two sides 5.5m
Spend the parallel two rows of injected holes in direction；Part of path without shoulder protector, the cloth from inside to outside at the road shoulder slope foot away from route two sides 4.0m
If the two rows of injected holes parallel with the length direction of route, two rows of injected holes are followed successively by first row injected hole and second from inside to outside
Injected hole is arranged, and injected hole is divided into the first injected hole and the second injected hole, first row injected hole is the first injected hole and the second note
It starches hole alternately to lay, injected hole arrangement are as follows: the spacing between the two neighboring injected hole in easy subsidence area is 5m, and easily subsidence area is adjacent
Spacing between two injected holes is 3.5m, the first injected hole perpendicular to road bed, the central axes of the second injected hole with it is vertical
In road bed vertical line drift angle be 30 °；
S3, it is inserted into grouting pipe respectively in the first injected hole and the second injected hole, and is consolidated grouting pipe with cement slurry
It is fixed, wherein cement slurry is that 1:0.6~1 is prepared by portland cement and water by weight；
S4, the grouting liquid being stirred is uniformly injected into injected hole through grouting pipe, is sealed after completing slip casting with cement mortar
Close the necessary Feng Manzhi injected hole entrance of injected hole, hole sealing depth >=2m, and sealing of hole, cement mortar final set rear enclosed grouting pipe
On grouting stop-valve envelope, then level construction article, remove green mesh sheet.
Preferably, the construction method of the high-speed rail route roadbed karst collapse, step S2 Green mesh sheet are fixed on
On steel pipe post, mesh sheet height is 1.8m, a length of 2.0m of steel pipe post, and the buried depth of steel pipe post is 0.5m, between steel pipe post
Spacing be 3m, at interval of a steel pipe post be arranged a diagonal brace.
Preferably, the construction method of the high-speed rail route roadbed karst collapse, slip casting process is in two times in step S5
It carries out, slip casting process is successively uniformly injected into thin cement slurry and concentrated water mud through grouting pipe twice, and slip casting process is not interrupted twice
Carry out, thin cement slurry the preparation method comprises the following steps: taking the asphalt mixtures modified by epoxy resin of the portland cement of 200~300 parts by weight, 30~50 parts by weight
Rouge, 40~60 parts by weight partial size be the fine sand of 6~8mm, the sodium metasilicate of 20~30 parts by weight, 200~300 parts by weight water,
It stirs evenly to obtain the final product；Concentrated water mud the preparation method comprises the following steps: taking the portland cement of 200~300 parts by weight, 30~50 parts by weight
Epoxy resin, the sodium metasilicate of 20~30 parts by weight, 100~150 parts by weight water, stir evenly to obtain the final product.
Preferably, the construction method of the high-speed rail route roadbed karst collapse, the second injected hole use pipe-following drilling,
Opening diameter cannot be less than 110mm, and whole bore dia cannot be less than 91mm.
Preferably, the construction method of the high-speed rail route roadbed karst collapse, the grouting pipe is with cement slurry
It is supported before fixation using bracket, the bracket includes:
Pedestal；
Support column is vertically arranged, and the top surface of lower end and the pedestal is rotatablely connected；
L shaped plate, is set to the top of the support column vertically, and the L shaped plate includes integrally formed level board and vertical
Plate, the bottom surface of the level board and the upper end of the support column are affixed, the top surface of the level board be provided along its length with
The vertically disposed first sliding groove of vertical plate, the vertical plate are equipped with horizontal perforative through-hole；
L shape stick is arranged close to the through-hole, and a free end of the L shape stick and the vertical plate are far from the water
The vertical side rotation connection of the one of plate；
Mobile mechanism, is set to the top of the level board, and the mobile mechanism includes:
Rotor plate, one end and the free end of the level board along its length are hinged, the central axis of hinged place
In the length direction of the first sliding groove, the bottom surface of the rotor plate is equipped with second sliding slot along its length, the second sliding slot
Central axis intersects with the central axis of the first sliding groove；
Fixed column, the top surface of the rotor plate is fixedly arranged on perpendicular to the rotor plate, and the upper end of the fixed column is affixed
There is an anchor ear mechanism for being used to support grouting pipe；
Mobile column is set to vertically between the level board and the rotor plate, the upper end of the mobile column and described the
The sliding clamping of two sliding slots, the lower end of the movable plate and first sliding groove sliding are clamped；
Push rod is horizontally disposed with, and one end of the push rod is affixed by the through-hole and the lateral wall of the mobile column, institute
State the annular groove for being equipped at intervals with multiple coaxial arrangements on the lateral wall of push rod along its length, the push rod setting are as follows: the L
Another free end alternative of shape stick and any annular groove are clamped.
Preferably, the construction method of the high-speed rail route roadbed karst collapse, the length of the rotor plate are not more than
The length of the level board.
The present invention is include at least the following beneficial effects:
It 1, is that the first injected hole and the second injected hole are alternately laid by first row injected hole in the present invention, the first injected hole
Perpendicular to road bed, the drift angle of the central axes of the second injected hole and the vertical line perpendicular to road bed is 30 °, is solved not
Has the construction technology problem that regulation condition is carried out right above Business Line.
2, the present invention does not construct on roadbed significantly shortens the time of high-speed railway Business Line block route, both saves
Save labour, equipment uses, and saved cost, reduced the interference caused by railway operation.
3, grouting pipe is used to support using bracket in the present invention, the gradient of grouting pipe is adjusted, convenient in cement
The gradient that grouting pipe is adjusted before starching fixed grouting pipe, avoids the note being put by the first injected hole and the second injected hole
The gradient for starching conduit is different, and the bracket setting for fixing grouting pipe it is different caused by frequently setting support and waste of manpower object
The case where power.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram of the bracket of the present invention in one embodiment；
Fig. 2 is the side structure schematic diagram of the mobile mechanism of the present invention in another embodiment.
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention is described in further detail, to enable those skilled in the art's reference
Specification word can be implemented accordingly.
It should be noted that experimental method described in following embodiments is unless otherwise specified conventional method, institute
Reagent and material are stated, unless otherwise specified, is commercially obtained；In the description of the present invention, term " transverse direction ", " vertical
To ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", the instructions such as "outside" side
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present invention and simplification of the description,
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.
The present invention provides a kind of construction method of high-speed rail route roadbed karst collapse, which comprises the following steps:
It should be noted that the underground installations such as existing pipe, gauze are collected in investigation before S1, construction and in construction, and stop safety work away from
From, if drilling machine has an impact to comprehensive pipeline, answer scene adjustment drilling machine hole site, avoid influence comprehensive pipeline causes safety accident；
" water flowing, energization, access " work is carried out before construction, is arranged special messenger to carry out safety and performance checking to construction machinery before constructing, is prevented
The continuity of mechanical breakdown influence slip casting only occurs during slip casting and slip casting tracheal rupture causes slurries to spray during slip casting
Phenomena such as shooting people wounded；Fence opening formality is handled to station, while declaring track blockade construction plan, installation is faced in block point
When fence be physically separated, interim fence by every 200~500m segmentation be configured, construction finishes, dismounting move on to next apply
Work area section, interim fence both ends connect with existed concrete bridge roll guard, guarantee that route is in all fronts closed state, to be onstructed complete
Restore permanent fence after finishing, i.e., security isolation construction area is set with green mesh sheet on existing line road shoulder, and on existing road
The full framing drilling platform auxiliary construction of 3m wide is set up in base side slope with steel pipe；
S2, drilled using anchoring drilling machine by design requirement, due to can not coring, so according in boring procedure bore soil
Drill bits different with diamond replacement and being determined according to run of steel and drill into whether rock depth reaches design at interface of stone and earth
The requirement of depth, and carry out borehole log；There is the part of path of shoulder protector, at the road shoulder slope foot away from route two sides 5.5m from inside to outside
The two rows of injected holes parallel with the length direction of route are laid, two rows of injected holes are not located at one of green mesh sheet far from roadbed
Side；Part of path without shoulder protector is laid flat with the length direction of route from inside to outside at the road shoulder slope foot away from route two sides 4.0m
Capable two rows of injected holes, two rows of injected holes are followed successively by first row injected hole and second row injected hole, and injected hole point from inside to outside
For the first injected hole and the second injected hole, first row injected hole is that the first injected hole and the second injected hole are alternately laid, injected hole
Arrangement are as follows: the spacing between the easy two neighboring injected hole in subsidence area is 5m, easily between the two neighboring injected hole in subsidence area between
Away from for 3.5m, the first injected hole is perpendicular to road bed, the central axes of the second injected hole and the vertical line perpendicular to road bed
Drift angle be 30 °, be arranged the second injected hole scheme, solve the construction for not having and carrying out regulation condition right above Business Line
Technical problem is split with bored grouting for main management measure by soil cave, solution cavity and the corrosion near grouting filling soil stone interface
Gap obstructs the hydraulic connection between surface and ground water, prevents the generation of karst ground subsidence；By exploratory bore-hole technical requirements
Brill is applied, anchoring drilling machine is by the drilling depth situation in drilling process, to judge rock-soil layer interface, it is ensured that drilling at least enters rock 5m
Or 2m below solution cavity bottom plate；
S3, it is inserted into grouting pipe respectively in the first injected hole and the second injected hole, and is consolidated grouting pipe with cement slurry
It is fixed, wherein cement slurry is that 1:0.6~1 is prepared by portland cement and water by weight；
S4, the grouting liquid being stirred is uniformly injected into injected hole through grouting pipe, is sealed after completing slip casting with cement mortar
Injected hole is closed, the grouting stop-valve envelope in cement mortar final set rear enclosed grouting pipe, hole sealing depth >=2m, and sealing of hole must Feng Manzhi
Injected hole entrance；When probing discloses and has that solution cavity development, corrosion are broken and leak is serious, using orifice tube dynamic congestion method,
Aperture pipe diameter is 110mm, and when coating is cohesive soil, hole sealing depth is not less than 4m；When coating is sandy soil and land pebble
When, it should be sealed to native stone interface, once orifice tube is set as floral tube to earth's surface 4m；Then construction article is leveled, green mesh sheet is removed.
In the above-mentioned technical solutions, the construction method of the high-speed rail route roadbed karst collapse, the construction method was both
Have and do provisional protection fence with steel pipe and the green mesh sheet of steel wire on the inside of road shoulder injected hole and both wired will be isolated with construction area,
At the inside that route road shoulder lays two rows of injected holes, be then arranged on the outside of provisional protection fence drilling machine platform carry out drilling and
Slip casting operation, all construction personnel's operations on the outside of provisional protection fence when drilling with slip casting are forbidden to cross, walk and temporarily prevent
Barrier shielding should stop the construction of drilling, could continue to construct after waiting trains to pass through when there is train to pass through；When slip casting, in correspondence
The green mesh sheet of steel wire on hang up colour bar cloth or geomembrane, prevent dust and cement slurry from polluting railway roadbed.The present invention is used in road shoulder
The method of upper punching slip casting fills karst collapse, not destroy the normal operation of railway, guarantees normal traffic；And close
The first row injected hole of roadbed setting is alternately laid using the first injected hole and the second injected hole, and the first injected hole is perpendicular to road
The drift angle of primary surface, the central axes of the second injected hole and the vertical line perpendicular to road bed is 30 °, solves not to have and seek
The construction technology problem of regulation condition is carried out right above industry line.
In another technical solution, the construction method of the high-speed rail route roadbed karst collapse, step S2 Green
Mesh sheet is fixed on steel pipe post, buries a steel pipe post, every steel pipe post 2.0m, buried depth along the every 3m of line direction
0.5m, while diagonal brace is arranged in steel pipe post interval 5m, provisional protection column height is 1.5m, guarantees the stabilization of provisional protection fence
Property.
In another technical solution, the construction method of the high-speed rail route roadbed karst collapse, slip casting in step S5
Process carries out in two times, and slip casting process is successively uniformly injected into thin cement slurry and concentrated water mud through grouting pipe twice, twice slip casting
Process does not interrupt progress, and grouting pressure (orifice pressure gage reading) is 0.2~0.4Mpa, 0.3~0.5Mpa of whole injection pressure power, infuses eventually
Condition are as follows: when the injection rate of continuous grouting 10min is not more than 5L/min under grouting pressure, slip casting can be terminated, thin cement slurry
The preparation method comprises the following steps: take 42.5 grades of ordinary portland cements of 200~300 parts by weight, the epoxy resin of 30~50 parts by weight, 40~
The partial size of 60 parts by weight be the fine sand of 6~8mm, the sodium metasilicate of 20~30 parts by weight, 200~300 parts by weight water, stir evenly
To obtain the final product；Concentrated water mud the preparation method comprises the following steps: taking 42.5 grades of ordinary portland cements of 200~300 parts by weight, 30~50 parts by weight
Epoxy resin, the sodium metasilicate of 20~30 parts by weight, 100~150 parts by weight water, stir evenly to obtain the final product.
In another technical solution, the construction method of the high-speed rail route roadbed karst collapse, it is contemplated that both wired
Safety problem and roadbed pavement planer be disposable regulation, do not need to visit to fill and combine, can not coring, so inclined hole selects anchoring
Drilling machine construction, the first injected hole are constructed using geological drilling rig；Second injected hole uses pipe-following drilling, and opening diameter cannot be less than
110mm, whole bore dia cannot be less than 91mm；Notice that karst cavity will appear to fall the danger of drilling tool when drilling, cavity should be measured
Depth, size, record are detailed；Business Line condition of construction Special complex, the method for not using water to rinse pore-forming, using air compressor machine
Pore-forming is rinsed, is collapsed to avoid secondary.
In another technical solution, as shown in Fig. 1~2, the construction method of the high-speed rail route roadbed karst collapse,
The grouting pipe is supported before being fixed with cement slurry using bracket, and the bracket includes:
Pedestal 1；
Support column 2, is vertically arranged, and the top surface of lower end and the pedestal 1 is rotatablely connected, in order to which the pedestal 1 is solid
After fixed, the support column 2, which can rotate, adjusts direction；
L shaped plate 3, is set to the top of the support column 2 vertically, and the L shaped plate 3 includes integrally formed level board and erects
Straight panel, the bottom surface of the level board and the upper end of the support column 2 are affixed, and the top surface of the level board is provided along its length
With the vertically disposed first sliding groove of the vertical plate, the vertical plate is equipped with horizontal perforative through-hole；
L shape stick 301 is set to the surface of the through-hole, a free end of the L shape stick 301 and the vertical plate
A vertical side rotation connection far from the level board, connects so that the L shape stick 301 can be rotated around it with the vertical plate
The central axis rotation of the part connect；
Mobile mechanism, is set to the top of the level board, and the mobile mechanism includes:
Rotor plate 4, one end and the free end of the level board along its length are hinged, the central axis of hinged place
In the length direction of the first sliding groove, the bottom surface of the rotor plate 4 is equipped with second sliding slot along its length, the second sliding slot
Central axis intersects with the central axis of the first sliding groove, projection and the first sliding groove weight of the second sliding slot in horizontal plane
It closes；
Fixed column 5 is fixedly arranged on the top surface of the rotor plate 4, the upper end of the fixed column 5 perpendicular to the rotor plate 4
It is connected with an anchor ear mechanism 7 for being used to support grouting pipe 6, with the fixation grouting pipe；
Mobile column 8 is set to vertically between the level board and the rotor plate 4, the upper end of the mobile column 8 with it is described
Second sliding slot sliding clamping, the lower end of the movable plate and first sliding groove sliding are clamped；
Push rod 9 is horizontally disposed with, and one end of the push rod 9 is solid by the through-hole and the lateral wall of the mobile column 8
It connects, is equipped at intervals with the annular groove of multiple coaxial arrangements on the lateral wall of the push rod 9 along its length, the push rod 9 is arranged
Are as follows: another free end alternative of the L shape stick 301 and any annular groove are clamped, with the position of the fixation push rod 9 and admittedly
The position of the fixed mobile column 8 to determine the tilt angle of the rotor plate 4, and then controls what the anchor ear mechanism 7 was fixed
The tilt angle of grouting pipe.
In another technical solution, the construction method of the high-speed rail route roadbed karst collapse, the rotor plate 4
Length is not more than the length of the level board, when mobile close to the vertical plate to avoid the mobile column 8, the rotor plate 4
It is interfered with the vertical plate.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (6)
1. the construction method of high-speed rail route roadbed karst collapse, which comprises the following steps:
S1, it uses green mesh sheet that security isolation construction area is set on existing line road shoulder, and uses steel on existing roadbed side slope
Pipe sets up full framing platform；
S2, the part of path for having shoulder protector lay the length side with route from inside to outside at the road shoulder slope foot away from route two sides 5.5m
To parallel two rows of injected holes；Part of path without shoulder protector, at the road shoulder slope foot away from route two sides 4.0m from inside to outside lay with
The parallel two rows of injected holes of the length direction of route, two rows of injected holes are followed successively by first row injected hole and second row note from inside to outside
Hole is starched, and injected hole is divided into the first injected hole and the second injected hole, first row injected hole is the first injected hole and the second injected hole
It alternately lays, injected hole arrangement are as follows: the spacing between the two neighboring injected hole in easy subsidence area is 5m, and easily subsidence area is two neighboring
Spacing between injected hole is 3.5m, and the first injected hole is perpendicular to road bed, the central axes of the second injected hole and perpendicular to road
The drift angle of the vertical line of primary surface is 30 °；
S3, it is inserted into grouting pipe respectively in the first injected hole and the second injected hole, and is fixed grouting pipe with cement slurry,
In, cement slurry is that 1:0.6~1 is prepared by portland cement and water by weight；
S4, the grouting liquid being stirred is uniformly injected into injected hole through grouting pipe, is infused after completing slip casting with cement mortar closing
Starch hole, hole sealing depth >=2m, and sealing of hole must Feng Manzhi injected hole entrance, in cement mortar final set rear enclosed grouting pipe
Grouting stop-valve envelope, then levels construction article, removes green mesh sheet.
2. the construction method of high-speed rail route roadbed karst collapse as described in claim 1, which is characterized in that step S2 Green
Mesh sheet is fixed on steel pipe post, and mesh sheet height is 1.8m, and a length of 2.0m of steel pipe post, the buried depth of steel pipe post is 0.5m, steel
Spacing between tube column is 3m, and a diagonal brace is arranged at interval of a steel pipe post.
3. the construction method of high-speed rail route roadbed karst collapse as described in claim 1, which is characterized in that slip casting in step S5
Process carries out in two times, and slip casting process is successively uniformly injected into thin cement slurry and concentrated water mud through grouting pipe twice, twice slip casting
Process does not interrupt progress, thin cement slurry the preparation method comprises the following steps: taking the portland cement of 200~300 parts by weight, 30~50 parts by weight
Epoxy resin, 40~60 parts by weight partial size be the fine sand of 6~8mm, the sodium metasilicate of 20~30 parts by weight, 200~300 weight
The water of part, stirs evenly to obtain the final product；Concentrated water mud the preparation method comprises the following steps: taking the portland cement of 200~300 parts by weight, 30~50
The epoxy resin of parts by weight, the sodium metasilicate of 20~30 parts by weight, 100~150 parts by weight water, stir evenly to obtain the final product.
4. the construction method of high-speed rail route roadbed karst collapse as described in claim 1, which is characterized in that the second injected hole is adopted
With pipe-following drilling, opening diameter cannot be less than 110mm, and whole bore dia cannot be less than 91mm.
5. the construction method of high-speed rail route roadbed karst collapse as described in claim 1, which is characterized in that the grouting pipe
It is supported before being fixed with cement slurry using bracket, the bracket includes:
Pedestal；
Support column is vertically arranged, and the top surface of lower end and the pedestal is rotatablely connected；
L shaped plate, is set to the top of the support column vertically, and the L shaped plate includes integrally formed level board and vertical plate, institute
The bottom surface for stating level board and the upper end of the support column are affixed, and the top surface of the level board is provided along its length erects with described
The vertically disposed first sliding groove of straight panel, the vertical plate are equipped with horizontal perforative through-hole；
L shape stick is arranged close to the through-hole, and a free end of the L shape stick and the vertical plate are far from the level board
A vertical side rotation connection；
Mobile mechanism, is set to the top of the level board, and the mobile mechanism includes:
Rotor plate, one end and the free end of the level board along its length are hinged, and the central axis of hinged place is in institute
The length direction of first sliding groove is stated, the bottom surface of the rotor plate is equipped with second sliding slot, the center of the second sliding slot along its length
Axis intersects with the central axis of the first sliding groove；
Fixed column, the top surface of the rotor plate is fixedly arranged on perpendicular to the rotor plate, and the upper end of the fixed column is connected with one
It is used to support the anchor ear mechanism of grouting pipe；
Mobile column is set to vertically between the level board and the rotor plate, and the upper end of the mobile column and described second is slided
Slot sliding clamping, the lower end of the movable plate and first sliding groove sliding are clamped；
Push rod is horizontally disposed with, and one end of the push rod is affixed by the through-hole and the lateral wall of the mobile column, described to push away
The annular groove of multiple coaxial arrangements, the push rod setting are as follows: the L shape stick are equipped at intervals on the lateral wall of bar along its length
Another free end alternative and any annular groove be clamped.
6. the construction method of high-speed rail route roadbed karst collapse as claimed in claim 5, which is characterized in that the rotor plate
Length is not more than the length of the level board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482035.6A CN110258192A (en) | 2019-06-04 | 2019-06-04 | The construction method of high-speed rail route roadbed karst collapse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482035.6A CN110258192A (en) | 2019-06-04 | 2019-06-04 | The construction method of high-speed rail route roadbed karst collapse |
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| Publication Number | Publication Date |
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| CN110258192A true CN110258192A (en) | 2019-09-20 |
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| CN201910482035.6A Pending CN110258192A (en) | 2019-06-04 | 2019-06-04 | The construction method of high-speed rail route roadbed karst collapse |
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Cited By (1)
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| CN113882195A (en) * | 2021-09-01 | 2022-01-04 | 中铁四院集团工程建设有限责任公司 | Construction method for preventing roadbed of operation railway from sliding |
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