CN110094216A - A kind of separate tunnel stratum compensation and grouting system - Google Patents
A kind of separate tunnel stratum compensation and grouting system Download PDFInfo
- Publication number
- CN110094216A CN110094216A CN201910471669.1A CN201910471669A CN110094216A CN 110094216 A CN110094216 A CN 110094216A CN 201910471669 A CN201910471669 A CN 201910471669A CN 110094216 A CN110094216 A CN 110094216A
- Authority
- CN
- China
- Prior art keywords
- grouting
- compensation
- slip casting
- steel pipe
- tunnel
- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Abstract
The invention discloses a kind of separate tunnel stratum compensation and grouting systems, including steel pipe (4), two sets of moveable slip casting units are symmetrically arranged in the steel pipe (4), it is realized and is flexibly connected by plunger distance control-rod (10) between two slip casting units, compensation and grouting cavity is constituted between two slip casting units, the steel pipe (4) of the compensation and grouting cavity is equipped with slip casting aperture (11), the slip casting unit includes stopping at least two grouting devices (7) that slurry piston (6) is fixedly connected set on only slurry piston (6) of compensation and grouting cavity end and with this, mortar injects the soil body and the solidification to reinforcing area by the slip casting aperture (11), it realizes and the compensation and grouting of stabilization zone (3) is reinforced.Compensation and grouting system of the invention improves grouting and reinforcing efficiency and quality, solves the problems such as traditional grouting system is limited by constructing tunnel space, it can be achieved that needing reinforcement the accurate positioning grouting and reinforcing of position to tunnel in minimum construction space.
Description
Technical field
The invention belongs to bored tunnel class auxiliary method technical fields, more particularly, to a kind of separate tunnel stratum
Compensation and grouting system.
Background technique
Bored tunnel construction is to carry out excavating the process for taking native operation in the closing underground space.Bored tunnel common at present
Construction method mainly has: shield method, push bench process, drilling and blasting method, TBM method etc., either uses which kind of excavation method, due to applying branch
Protection structure can be different degrees of the process for lagging behind tunnel excavation, the process of excavation inevitably results in Rock And Soil deformation and stratum
Loss.Under normal conditions, this deformation and Stratum Loss are all harmful, it is necessary to be reduced as far as possible.In dense city and again
When the regions constructions such as highway, railway, the sensitive construction of structures wanted, it is especially desirable to control earth's surface deformation.
The method of common control Stratum Loss mainly has reinforces in advance, and synchronous grouting increases compensation and grouting (secondary injection
Slurry), using isolation pile protection etc..Wherein control method of the compensation and grouting as a kind of settlement after construction of instantaneity, has obtained work
The generally approval of journey circle is all in most cases effective, economic flexible tunnel auxiliary method.Compensation and grouting can be with
It is reinforced out of tunnel or outside tunnel, existing main compensation grouting and reinforcing has following methods in general:
(1) secondary grouting hole can be reserved in precast construction for shield method, push bench process tunnel, in shield tunnel construction
(space for just having construction after mechanical equipment all passes through is had to wait for) after a period of time, as needed from tunnel internal using in advance
The secondary grouting hole stayed compensates mortar depositing construction.
(2) for drill+blast tunnel, what be can be convenient before Second Lining Construction carries out bore hole compensated slip casting in tunnel,
But after secondary lining and splash guard construction, bored grouting, the water-proof system that otherwise will lead to entire tunnel it should not just fail again,
Cause bigger hidden danger.
(3) mortar depositing construction is compensated outside tunnel, is at present usually to squeeze at a certain angle on the ground to need reinforcement
Mini-valve tube (band check (non-return) valve, the Grouting Pipe that repeatable slip casting uses), carries out primary or multiple slip casting as needed, carries out stratum
It reinforces, as shown in Figure 1.
But all there is also certain deficiencies for the method that above-mentioned compensation and grouting is reinforced:
(1) when use compensates slip casting in tunnel, since the space of construction is limited, it is difficult to use large scale equipment, add
Admittedly being limited in scope；Bored grouting construction direction is all that upward, the quality of reinforcing is difficult to ensure；Compensation and grouting construction needs to occupy big
Quantity space interferes constructing tunnel process, influences the duration.
(2) deformation of the earth's surface as caused by tunnel excavation is the process slowly developed, the tunnel especially in soil layer,
Since the plastic deformation of the soil body may last longer.Once and constructing tunnel just exposes problem after the completion, supplements note in hole
Slurry construction just will be very limited.
(3) deficiency reinforced in hole can be made up to a certain extent by being reinforced using the sleeve valve barrel grouting of earth's surface, but be tucked inside the sleeve
Valve pipe is reinforced to need to gather in earth's surface and be drilled, and does not have the road of borehole conditions, railway, the rings such as intensive construction of structures group in earth's surface
It is also difficult to carry out under border.It can not also accomplish to compensate immediately simultaneously and excavate caused Stratum Loss, it is stringent not adapt to settlement request
The construction demand in location
In conclusion compensation and grouting has played great function as a kind of effective means in tunnel construction really,
But existing compensation and grouting construction method still has certain limitation, is difficult to effectively implement under given conditions,
Due function cannot be played.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of separate tunnel stratum compensation and grouting
System, high degree of automation, structure integrated level is high, it can be achieved that needing reinforcement position to tunnel in minimum construction space
It is accurately positioned grouting and reinforcing, substantially increases grouting and reinforcing efficiency and quality, solves traditional grouting system by constructing tunnel sky
Between the problems such as limiting.
To achieve the above object, the present invention provides a kind of separate tunnel stratum compensation and grouting system, comprising:
Play a row or multi-row steel pipe in advance in tunnel excavation range inner top, be symmetrically arranged in the steel pipe two sets it is moveable
Slip casting unit realized between two slip casting units by plunger distance control-rod and is flexibly connected, and can be integrally in the steel pipe
It is moved to the stabilization zone that tunnel needs reinforcement and locking, and constitutes compensation and grouting cavity between two slip casting units, the compensation note
The steel pipe for starching cavity is equipped with slip casting aperture；
The slip casting cellular construction is identical, including being set to the only slurry piston of compensation and grouting cavity end and stopping with this
At least two grouting devices that slurry piston is fixedly connected, the grouting device are nipple-like structure, are set across the only slurry piston
In in the compensation and grouting cavity, mortar is continually provided for the compensation and grouting cavity, the mortar passes through the slip casting
The soil body and solidification of the aperture injection to reinforcing area, realize and reinforce to the compensation and grouting of stabilization zone.
Further, the slip casting unit includes location control bar, is used to control the slip casting unit along the steel pipe
Inner wall is moved to the neighbouring tunnel tunnel face to need reinforcement or other operating positions and locks.
Further, the slip casting unit includes hose, which complies with the location control bar setting, and quantity is equal to institute
State the quantity of grouting device, and with the mating connection of the grouting device.
Further, the slip casting unit includes flushing device for inner wall, which is set to the compensation and grouting
In cavity, and it is fixedly connected with the only slurry piston.
Further, the steel pipe is according to requirement of engineering in horizontally arranged, arc shooting or inverted V type arrangement or other rows
Column mode.
Further, the slip casting aperture is arranged along the circle of steel tube week array of the compensation and grouting cavity.
Further, the slip casting aperture is round hole, square hole, tri-angle-holed or other structures form through-hole knot
Structure.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
1. compensation and grouting system of the invention, high degree of automation, structure integrated level is high, in minimum construction space,
The accurate positioning grouting and reinforcing of position of needing reinforcement to tunnel can be achieved, substantially increase grouting and reinforcing efficiency and quality, solve
The problems such as traditional grouting system is limited by constructing tunnel space.
2. compensation and grouting system of the invention, the packaged type slip casting unit including being set to steel duct, the slip casting unit
It is two sets, and symmetrically in the steel pipe, and is moved to the position to need reinforcement along steel pipe inner wall and carries out slip casting operation.
3. compensation and grouting system of the invention only starches the end that piston is set to location control bar, when carrying out slip casting operation
Guarantee that slurries can not leak completely into stabilization zone, improve the quality of slip casting and increases the service efficiency of grouting serous fluid.
4. compensation and grouting system of the invention, plunger distance control-rod is located at two and only starches on the inside of piston, with location control bar
It connects and is controlled by it, control two is only starched between piston after the inner wall that slip casting unit prolongs steel pipe is moved to designated position and locks
Distance improve slip casting precision and quality to realize to the precise positioning of tunnel reinforcement position.
5. compensation and grouting system of the invention, flushing device for inner wall is symmetrically disposed on two and only starches on the inside of piston, the inside
The side positioned at slip casting workspace, before slip casting operation starts or after it is internal by flushing device for inner wall injection high pressure water
Wall is rinsed operation, clears up the slip casting aperture in steel pipe walls, it is ensured that slip casting aperture is unobstructed, to guarantee the multiple of the grouting system
It uses.
6. compensation and grouting system of the invention, location control bar control the slip casting unit be moved to along the inner wall of steel pipe it is specified
Position simultaneously locks, and to realize the accurate positioning for reinforcing position to tunnel band, improves slip casting precision and quality.
Detailed description of the invention
Fig. 1 is earth's surface mini-valve tube stratum consolidation construction method schematic diagram in the prior art；
Fig. 2 is that separate tunnel of embodiment of the present invention stratum compensation and grouting system arranges front schematic view；
Fig. 3 is that separate tunnel of embodiment of the present invention stratum compensation and grouting system arranges side schematic view；
Fig. 4 is that the embodiment of the present invention moves grouting system structural schematic diagram；
Fig. 5 is used the structural schematic diagram of steel pipe by the embodiment of the present invention.
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: the tunnel 1-, the ground 2-, 3-
It is living that stabilization zone, 4- steel pipe, 5- location control bar, 6- only starch piston, 7- grouting device, 8- cleaner for inner wall, 9- hose, 10-
Fill in distance controlling bar, 11- slip casting aperture, 12- tunnel tunnel face.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 2 is that separate tunnel of embodiment of the present invention stratum compensation and grouting system arranges front schematic view,
Fig. 3 is that separate tunnel of embodiment of the present invention stratum compensation and grouting system arranges side schematic view.Such as Fig. 2 and Fig. 3
Shown, which includes setting a row or multi-row steel pipe 4 in advance in the top of tunnel excavation range, as shown in figure 5, steel pipe 4
On be disposed with slip casting aperture 11, the tube wall that water, air, grouting serous fluid etc. can be allowed to pass through steel pipe 4 enters in the soil body, and to the soil body
It is reinforced.Preferably, steel pipe 4 can be in horizontally arranged, arc shooting or inverted V type arrangement etc., and arrangement mode can be according to work
Journey needs to arrange spacing to be arranged and quantity is required according to strengthening quality, this field engineering staff can be true by simple computation
It is fixed.
Specifically, as shown in figure 4, the grouting system includes the packaged type slip casting unit inside steel pipe 4, preferably
Ground, the slip casting unit are two sets, and symmetrically in the steel pipe 4, and the position to need reinforcement is moved to along steel pipe inner wall simultaneously
Carry out slip casting operation.The slip casting unit includes only starching piston 6, grouting device 7, flushing device for inner wall 8, hose 9, plunger distance control
Bar 10 and location control bar 5 processed.Wherein, only for slurry piston 6 set on the end of location control bar 5, which is location control bar 5
One end in steel pipe 4 guarantees that slurries can not leak completely into stabilization zone 3 when carrying out slip casting operation, improves
The quality of slip casting and the service efficiency for increasing grouting serous fluid.Meanwhile grouting device 7 and hose 9 form slip casting module, design pressure
Grouting serous fluid by hose 9 using grouting device 7 reach stabilization zone 3 in 4 lumen of steel pipe in, then pass through slip casting aperture 11
Stabilization zone 3 is reached to complete reinforcement operation.In addition, plunger distance control-rod 10, which is located at two, only starches 6 inside of piston, controlled with positioning
Bar 5 processed is connected and is controlled by it, and only slurry is lived for control two after the inner wall that slip casting unit prolongs steel pipe 4 is moved to designated position and locks
The distance between plug 6 improves slip casting precision and quality to realize the precise positioning to tunnel reinforcement position.Flushing device for inner wall 8
Being symmetrically disposed on two, only 6 inside of slurry piston, the inside before slip casting operation starts or are tied positioned at the side of slip casting workspace
High pressure water is sprayed by flushing device for inner wall 8 after beam, operation is rinsed to inner wall, clears up the slip casting aperture 11 in steel pipe walls, really
It is unobstructed to protect slip casting aperture 11, to guarantee being used for multiple times for the grouting system.Further, location control bar 5 controls the slip casting list
Member is moved to designated position along the inner wall of steel pipe 4 and locks, and to realize the accurate positioning for reinforcing position to tunnel band, improves slip casting
Precision and quality.
The working principle of grouting system of the invention, compensation strengthening construction includes the following steps:
It (1) is that top sets a row or multi-row steel pipe 4 in advance in tunnel excavation range, steel pipe 4 can be in horizontally arranged, arc
Arrangement, inverted V type arrangement etc., arrangement mode can be arranged according to requirement of engineering, arrange spacing and quantity is wanted according to strengthening quality
It asks, this field engineering staff can be determined by simple computation, as shown in Figure 2.
(2) by location control bar 5 by removable grouting system position to the face 12 to need reinforcement nearby or other
Operating position, while the position for only starching piston 6 is adjusted by plunger distance control-rod 10, so that it is reached assigned work area.
(3) high pressure water is sprayed using flushing device for inner wall 8 and carry out steel pipe inner wall flushing, clear up the slip casting aperture in steel pipe walls
11, it is ensured that slip casting aperture 11 is unobstructed.
(4) using grouting device 7 by the cavity between the slurries of design pressure injection piston 6, due to the barrier of piston 6,
Slurries will be in the soil body around can only being pressed into from the steel pipe slip casting aperture 11 between piston 6.Slurries here can be with as needed
Using various reasonable reinforcement materials, the present invention is without limitation.
(5) after the completion of slip casting, the high pressure water cleaning steel pipe inner wall of flushing device for inner wall 8 is reused, positioning is then utilized
Grouting system is moved to next operating position by control-rod 5, or continues to reinforce, until meeting design requirement.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of separate tunnel stratum compensation and grouting system characterized by comprising
It excavates range inner top in tunnel (1) to beat in advance a row or multi-row steel pipe (4), being symmetrically arranged with two sets in the steel pipe (4) can
Mobile slip casting unit is realized between two slip casting units by plunger distance control-rod (10) and is flexibly connected, and can integrally existed
It is moved to the stabilization zone (3) that tunnel needs reinforcement in the steel pipe (4) and locks, and constitutes compensation and grouting between two slip casting units
The steel pipe (4) of cavity, the compensation and grouting cavity is equipped with slip casting aperture (11)；
The slip casting cellular construction is identical, including being set to only slurry piston (6) of compensation and grouting cavity end and stopping with this
At least two grouting devices (7) that slurry piston (6) is fixedly connected, the grouting device (7) are nipple-like structure, pass through described stop
Slurry piston (6) is placed in the compensation and grouting cavity, continually provides mortar for the compensation and grouting cavity, the mortar is logical
The soil body and solidification of slip casting aperture (11) injection to reinforcing area are crossed, realizes and the compensation and grouting of stabilization zone (3) is reinforced.
2. a kind of separate tunnel stratum compensation and grouting system according to claim 1, which is characterized in that the slip casting list
Member includes location control bar (5), and the inner wall for being used to control the slip casting unit along the steel pipe (4) is moved to the tunnel to need reinforcement
Road face (12) nearby or other operating positions and locks.
3. a kind of separate tunnel stratum compensation and grouting system according to claim 1 or 2, which is characterized in that the note
Starching unit includes hose (9), which complies with location control bar (5) setting, and quantity is equal to the grouting device (7)
Quantity, and with the grouting device (7) mating connection.
4. a kind of separate tunnel stratum compensation and grouting system according to any one of claim 1-3, which is characterized in that
The slip casting unit includes flushing device for inner wall (8), which is set in the compensation and grouting cavity, and with
Only slurry piston (6) is fixedly connected.
5. a kind of separate tunnel stratum compensation and grouting system described in any one of -4 according to claim 1, which is characterized in that
The steel pipe (4) is according to requirement of engineering in horizontally arranged, arc shooting or inverted V type arrangement or other arrangement modes.
6. a kind of separate tunnel stratum compensation and grouting system according to any one of claims 1-5, which is characterized in that
The slip casting aperture (11) is arranged along steel pipe (4) the excircle array of the compensation and grouting cavity.
7. a kind of separate tunnel stratum compensation and grouting system according to claim 1 to 6, which is characterized in that
The slip casting aperture (11) is round hole, square hole, tri-angle-holed or other structures form through-hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471669.1A CN110094216A (en) | 2019-05-31 | 2019-05-31 | A kind of separate tunnel stratum compensation and grouting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471669.1A CN110094216A (en) | 2019-05-31 | 2019-05-31 | A kind of separate tunnel stratum compensation and grouting system |
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| Publication Number | Publication Date |
|---|---|
| CN110094216A true CN110094216A (en) | 2019-08-06 |
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| CN201910471669.1A Pending CN110094216A (en) | 2019-05-31 | 2019-05-31 | A kind of separate tunnel stratum compensation and grouting system |
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