A kind of Grouting Pipe and grouting process improving slip casting effect
Technical field
The present invention relates to a kind of Grouting Pipes and grouting process for improving slip casting effect.
Background technique
Tunnel section and barrel are in weak surrounding rock band, and rock crushing easily collapses, and slip casting measure improvement is generally taken to enclose
Rock, but many situation slip castings of existing technology fall flat, and do not know slurries place to go, especially water rich strata etc. poorly
Mortar is easy to be taken away by the water in matter, and processing effect is undesirable, is more intractable problem.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, a kind of Grouting Pipe that can effectively improve slip casting effect is provided and using should
The grouting process of Grouting Pipe.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows:
A kind of Grouting Pipe improving slip casting effect, including hollow tubular ontology, one end are pulp inlet, if the body side is equipped with
Dry the first grout outlet that can discharge slurries outward, characterized in that further include the branch pipe spiraled about in the outer body, institute
State branch pipe and also be provided with branch pipe pulp inlet close to one end of ontology pulp inlet, and the pipe shaft of the branch pipe be equipped with it is several can be outside
Discharge the second grout outlet of slurries.
Preferably, first grout outlet is equipped with one layer of thin-walled that can be broken through by grouting pressure.
Preferably, second grout outlet is equipped with one layer of thin-walled that can be broken through by grouting pressure.
Preferably, the circumferential direction of the ontology and axial direction are uniformly distributed first grout outlet.
Preferably, it is small in the first grout outlet axis is outside greatly.
Preferably, first grout outlet is round table-like, and the trapezoidal base angle angle in longitudinal section is at 60 ° -90 °.
Preferably, the ontology is axial, and the distance between identical two neighboring described first grout outlet of phase is described
4 times -6 times of first grout outlet average diameter.
Preferably, the circumferential direction of the branch pipe and axial direction are uniformly distributed second grout outlet.
Preferably, the branch pipe diameter is 1/6-1/3 times of the ontology pipe diameter.
Preferably, the ontology is equipped with stop grouting plug close to one end of pulp inlet, and the stop grouting plug works with a curved
Face.
Preferably, the vacuum absorption device for being fixed on work surface is additionally provided on the ontology.
Preferably, the vacuum absorption device includes vacuum chuck and the vacuum evacuation device that is connected.
Preferably, the branch pipe is divided into rigid pipe portion and the connection rigid pipe being removably arranged on the body
The soft pipe portion in portion;The ontology includes the end to end tubular body unit of several axial directions, the two neighboring body unit
It is removably plugged in together, there is overlapping portion, and open up first grout outlet on overlapping portion.
Preferably, it is embedded a tubular connection in the first grout outlet of overlapping portion of the two neighboring body unit, it is described
There is flange at the both ends of tubular connection respectively to which two body units link together.
The present invention also provides a kind of tunnel grouting techniques, characterized in that includes the following steps:
(1) preparation, tunnel target position process injected hole;
(2) Grouting Pipe described in any of the above-described technical solution of the present invention is inserted into injected hole;
(3) above-mentioned stop grouting plug is headed into the injected hole, checks sealing, and pass through the fixed slip casting of the vacuum absorption device
Pipe is on operative goals;
(4) mortar is injected by the ontology of the Grouting Pipe, accelerator is injected by the branch pipe.
Preferably, the step (4), specific first slow slip casting fills the Grouting Pipe inner end first, then gradually infuses
The full entire slip casting tube chamber.
Advantageous effects of the invention:
1. Grouting Pipe of the invention, including hollow tubular ontology, and body side is equipped with several can discharge the of slurries outward
One grout outlet further includes the branch pipe spiraled about in outer body, and the pipe shaft of branch pipe can discharge slurry equipped with several outward
Integrally there are two channels of ontology and branch pipe can each lead into mortar and rapid hardening simultaneously for second grout outlet of liquid, such Grouting Pipe
Agent, the two combine after to the consolidation effect of rock stratum more preferably, in particular for the rock stratum of rich water.
One layer of thin-walled that can be broken through by grouting pressure is set on the first grout outlet, then both can guarantee that slurries normally flowed out note
Slurry pipe, while being avoided that the sandstone before slip casting in injected hole enter Grouting Pipe and result in blockage again.Similarly also on the second grout outlet
It is also similarly to act on that such thin-walled, which is arranged,.
2. the circumferential direction and axial direction of slip casting tube body are uniformly distributed the first grout outlet, pulp can be made uniform, further enhanced
Consolidation effect avoids partial region weak.Similarly, branch pipe, which may also set up, circumferentially and is axially uniformly distributed the second grout outlet.
Be arranged the first grout outlet axis it is big outward in it is small, be conducive to slurries quickly through.It is preferred that the first grout outlet be it is round table-like,
And the trapezoidal base angle angle in longitudinal section is at 60 ° -90 °.
Ontology is axial, and the distance between identical two neighboring first grout outlet of phase is the first grout outlet average diameter
4 times -6 times, then it can preferably take into account the density of the second grout outlet in the density of the first grout outlet and branch pipe on ontology.
In addition, setting branch pipe diameter is 1/6-1/3 times of ontology pipe diameter, the pulp of body side also can be preferably taken into account
The pulp area of area and branch tube side part.
3. ontology can set stop grouting plug close to one end of pulp inlet, and stop grouting plug has a curved working face, can so protect
The sealing for demonstrate,proving Grouting Pipe, avoids slurries from being lost, and guarantees slip casting effect, and the curved working face of stop grouting plug can easily be caught in
Weaken impact of the slurries to stop grouting plug during injected hole and slip casting, keeps the installation of Grouting Pipe stronger.
4. can be also set on slip casting tube body for fixing it in the vacuum absorption device of work surface, without manually in slip casting
It is whole in the process to help, it is connected and fixed without in addition drilling, it is more convenient effective.Especially vacuum absorption device can be including true
Suction disk has certain flexibility with the vacuum evacuation device being connected, vacuum chuck, can the relative engagement work more coarse with adaptation
Industry face.
5. branch pipe can be divided into the soft tube for being removably arranged rigid pipe portion and the rigid pipe portion of a connection on the body
Portion;Ontology may include the end to end tubular body unit of several axial directions, and two neighboring body unit is removably plugged on one
Rise, at this time by changing the quantity of body unit being plugged in together, just adapt to the needs of different slip casting hole depths, branch pipe by
In with soft pipe portion therefore can also length of fit adjust, it is extra that be placed on injected hole outer.In addition, two neighboring be plugged on
Body unit together can open up the first grout outlet in its overlapping portion, without specially avoiding, make full use of body tube and branch pipe
Length.
Especially two neighboring body unit is embedded tubular connection in its first grout outlet of overlapping portion to reach connection mesh
, pulp and connection have been taken into account, it is economical and practical.
6. tunnel grouting technique of the invention can be realized more easily same due to having used Grouting Pipe of the invention
When logical mortar and accelerator, simple process can but obtain the consolidation effect more preferably to rock stratum.
It is preferred that first slow slip casting fills Grouting Pipe inner end first, then gradually fills entire Grouting Pipe when slip casting step
Cavity reaches slip casting effect more sufficiently, firm.
Detailed description of the invention
Fig. 1 is the status diagram that 1 Grouting Pipe of the embodiment of the present invention is plugged in injected hole;
Fig. 2 be in the embodiment of the present invention 1 on slip casting tube body on the first grout outlet and branch pipe the second grout outlet in vertical axial
Perspective view;
Fig. 3 is the enlarged diagram of the first grout outlet on 1 slip casting tube body of the embodiment of the present invention;
Fig. 4 is the enlarged diagram of the second grout outlet on 1 Grouting Pipe branch pipe of the embodiment of the present invention;
Fig. 5 is the status diagram that 2 Grouting Pipe of the embodiment of the present invention is plugged in injected hole;
Fig. 6 is the grafting schematic diagram of 2 Grouting Pipe, two body units of the embodiment of the present invention;
Fig. 7 is the enlarged diagram of part A shown in Fig. 6;
Wherein: 1, work surface, 3, injected hole;
2, ontology, 22, pulp inlet, 24, grout outlet, the 26, first grout outlet, 262, thin-walled, 27, screw, 28, body unit,
282, overlapping portion, 284, gap, 29, tubular connection, 292, annular flange, 294, flange;
4, branch pipe, 412, rigid pipe portion, 414, soft pipe portion, 42, branch pipe pulp inlet, 44, branch pipe grout outlet, the 46, second pulp
Mouthful, 462, thin-walled;
6, stop grouting plug, 62, working face;
8, vacuum absorption device, 82, vacuum chuck, 84, vacuum evacuation device.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Embodiment 1
As shown in Figs 1-4, a kind of Grouting Pipe improving slip casting effect, including hollow tubular ontology 2, one end are pulp inlet 22, separately
One end is grout outlet 24, and in addition 2 side of ontology is additionally provided with several the first grout outlets 26 that can discharge slurries outward.In addition, note
Slurry pipe further includes the branch pipe 4 spiraled about in 2 outside of ontology, and branch pipe 4 also is provided with branch pipe close to one end of 2 pulp inlet 22 of ontology and enters
Mouth 42 is starched, the other end is branch pipe grout outlet 44, and the pipe shaft of branch pipe 4 is equipped with several the second pulps that can discharge slurries outward
Mouth 46.
Specifically, the first grout outlet 26 can be by the thin-walled 262 that grouting pressure is broken through, the second grout outlet 46 equipped with one layer
On also be provided with one layer can be by thin-walled 462 that grouting pressure is broken through.When slip casting, slurry pressure can break through thin-walled 262 and thin-walled 462
Normal outflow Grouting Pipe.
The circumferential direction of ontology 2 is uniformly distributed the first grout outlet 26 in the present embodiment.Specifically, uniformly distributed three column of the circumferential direction of ontology 2
First grout outlet 26, preferably the first grout outlet 26 are axially also uniformly distributed in ontology 2.
It is small in first grout outlet, 26 axis is big outward, more specifically, be it is round table-like, the trapezoidal base angle angle in longitudinal section exists
60°-90°。
Ontology 2 is axial, and the distance between identical two neighboring first grout outlet 26 of phase d is average for the first grout outlet 26
4 times -6 times of diameter.
The circumferential direction of 4 conveyor screw of branch pipe is uniformly distributed the second grout outlet 46, and specific is also circumferential uniformly three the second grout outlets of column
46, preferably the second grout outlet 46 is axially also uniformly distributed in branch pipe 4.4 diameter of branch pipe is preferably the 1/6-1/3 of 2 pipe diameter of ontology
Times, then it can preferably take into account the pulp area of 4 side of pulp area and branch pipe of 2 side of ontology.
As shown in Fig. 2, it is preferred that on ontology 2 on the circumferentially distributed and branch pipe 4 of first grout outlet 26 second grout outlet 46 week
To being distributed positive 60 ° of good job, pulp can preferably cooperate, quick and high-quality filling target.
In addition, ontology 2 is equipped with stop grouting plug 6 close to one end of pulp inlet 22, stop grouting plug 6 has a curved working face 62,
The specific working face 62 is annular, and is a part of spherical surface.
It is additionally provided on ontology 2 for fixing slip casting tube body 2 and 4 end of branch pipe in the vacuum absorption device 8 of work surface 1.
Vacuum absorption device 8 includes vacuum chuck 82 and the vacuum evacuation device 84 that is connected.Wherein vacuum chuck 82 can be industry universal
Flexible plastic material.Branch pipe 4 is fixed on 2 periphery of slip casting tube body, and 42 one end of branch pipe pulp inlet passes through stop grouting plug 6, is pierced by very
Suction adsorption device 8, facilitates slip casting.
Embodiment 2
As illustrated in figs. 2-7, a kind of Grouting Pipe improving slip casting effect, the difference from embodiment 1 is that: slip casting tube body 2 includes
Several end to end tubular body units 28 of axial direction, two neighboring body unit 28 are removably plugged in together, and have weight
Folded portion 282, and the first grout outlet 26 is opened up on overlapping portion 282.A tubulose is also embedded in the first grout outlet 26 on overlapping portion 282
There is flange at connector 29, the both ends of tubular connection 29 respectively to which two body units 28 link together.Specifically, pipe
The flange of 29 one end of shape connector is fixed annular flange 292, and the other end is three to four independent flange 294 of separate type,
Flange 294 is foldable metal or plastic sheet, is made of industry universal material, in use, flange 294 is opened and tubulose
Connector 29 is axial can to make tubular connection 29 integrally be inserted into corresponding first grout outlet 26 in parallel, later turn down flange 294
It is close to 28 outer wall of body unit to complete to fix.
Branch pipe 4 divides rigid pipe portion 412 to be removably set on ontology 2 and one is connected to the soft of rigid pipe portion 412
Property pipe portion 414.
Needed to adapt to different 3 depth of injected hole, can body unit 28 through this embodiment increase and decrease quantity and change this
The length of body 2.For example, as shown, branch pipe 4 is removed first to adapt to a shallower injected hole 3, reduction body unit 28
Usage quantity, shorten the length of slip casting tube body 2, then branch pipe 4 put on again, branch pipe 4 has more than certain length at this time
Amount, but since it is with soft pipe portion 414, which can suitably be pulled out other than more to vacuum absorption device 8, this
24 end of grout outlet of body 2 can also be arranged screw 27 and fix to the tail end progress detent of branch pipe 4.
Embodiment 3
A kind of tunnel grouting technique of the invention, includes the following steps:
(1) preparation, tunnel target position process injected hole 3;
(2) Grouting Pipe of embodiment 1 is inserted into injected hole 3;
(3) stop grouting plug 6 is headed into injected hole 3, checks sealing, and by the fixed Grouting Pipe of vacuum absorption device 8 in operative goals
On;
(4) mortar is injected by the ontology 2 of Grouting Pipe, accelerator is injected by branch pipe 4.Specific first slow slip casting makes slip casting as far as possible
Pipe inner end first fills, then gradually fills entire slip casting tube chamber.
Embodiment 4
A kind of tunnel grouting technique of the invention, the difference with embodiment 3 are: step (2) is inserted into embodiment in injected hole 3
2 Grouting Pipe.Notice that the overlapping portion 282 of two neighboring body unit 28 has the gap 284, towards the phase of direction of insertion A when insertion
Opposite direction is introduced into blocking Grouting Pipe with sand proof etc..
The general prior art of the industry can be used in mortar, accelerator and the two slip casting proportion in the present invention.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.