CN106013264B - A kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking - Google Patents
A kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking Download PDFInfo
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- CN106013264B CN106013264B CN201610538478.9A CN201610538478A CN106013264B CN 106013264 B CN106013264 B CN 106013264B CN 201610538478 A CN201610538478 A CN 201610538478A CN 106013264 B CN106013264 B CN 106013264B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention discloses a kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking, including step：Step S01：The interstitital texture protuberance cracking section at tunnel bottom, is staggeredly spaced and lays mini pile and sleeve valve barrel grouting stake position；Step S02：Drilled in order at mini pile and sleeve valve barrel grouting stake position to projected depth using rig；Step S03：Embedded mini pile, is in the milk using slurry feeding pump by Grouting Pipe to miniature stake holes in miniature stake holes, after grout cures, sets backing plate in mini pile termination, and apply certain pretightning force；Step S04：The embedded mini-valve tube in sleeve valve barrel grouting hole, the injection sleeve valve sleeve shell material in mini-valve tube, segmented grouting and reinforcing is carried out to substrate country rock by mini-valve tube.The present invention can Strengthening Tunnel substrate country rock, reduce tunnel bottom structure tension, effectively renovate tunnel bottom interstitital texture protuberance cracking disease, and easy construction is quick.
Description
Technical field
The invention belongs to Curing of Tunnel Diseases technical field, is applied to tunnel bottom interstitital texture protuberance more particularly to one kind and opens
The regulation method split.
Background technology
Most of China's Tunnel Engineering is not provided with splash guard at tunnel bottom, and also the row of being not provided with leads pervious bed, and tunnel base concrete is straight
The contact of same country rock is connect, to below phreatic line or rainfall makes the tunnel that tunnel is in below level of ground water, its inverted arch
The water pressure of certain value can be acted in structure.In the last few years, as China Express Railway, highway are repaiied on a large scale
Build, tunnel bottom interstitital texture protuberance cracking disease work example increased under effect of water pressure.Tunnel bottom rhegma, railway roadbed are lifted and had a strong impact on
Traffic safety is just bigger for the Railway Tunnel using ballastless track bed, its harmfulness.
For the tunnel defect of the tunnel bottom interstitital texture protuberance cracking as caused by inverted arch water pressure, splash guard is laid at tunnel bottom
It is maximally effective solution method to lead pervious bed with row, can not only improve the waterproof condition in tunnel, and can alleviate inverted arch
Water pressure.But splash guard is laid at tunnel bottom, the row of applying leads pervious bed, and construction acquires a certain degree of difficulty, and at present both at home and abroad for this
The mechanism understanding of kind novel tunnel disease is still not thorough enough, therefore in structure design of tunnel, underground water is not generally set still under inverted arch
Exhaust system.From the point of view of domestic and international present Research, domestic and foreign scholars swell cracking research to tunnel bottom interstitital texture seldom at present, special
It is not the research and analysis to its Cracking Mechanism, and then lacks the regulation method to such tunnel defect mature and feasible.
Under inverted arch not the row of setting lead can cause underground water can not effectively along inverted arch and the unimpeded discharge in country rock interface, or even if
Inverted arch exhaust system is devised, but due to some objective factors, causes exhaust system to be failed in construction time or operation phase, can also make
Certain water pressure is acted on tunnel inverted arch.Concrete grade is higher, and anti-permeability performance is preferable, make underground water be difficult to ooze inverted arch and
Interstitital texture is penetrated into tunnel.Therefore, after tunnel inverted arch closes or after the completion of construction, as country rock seepage field tends towards stability,
The water pressure acted on inverted arch can gradually increase, and ultimately resulting in inverted arch can be by the effect of water pressure of certain value, if faced upward
Hydraulic pressure force value suffered by arch exceedes the critical hydraulic pressure force value that inverted arch can bear, then can cause tunnel bottom interstitital texture under effect of water pressure
The appearance of protuberance cracking disease.
For existing tunnel, remedied it is difficult to be led to the underground water row under inverted arch in measure, it is necessary to take other works
Journey measure could swell cracking disease to inverted arch and effectively be renovated, and ensure tunnel safety operation.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of regulation side suitable for tunnel bottom interstitital texture protuberance cracking
Method, can Strengthening Tunnel substrate country rock, reduce tunnel bottom structure tension, effectively renovate tunnel bottom interstitital texture protuberance cracking disease,
And easy construction is quick.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking, including step：
Step S01：The interstitital texture protuberance cracking construction area surveying setting-out at tunnel bottom, staggeredly interval lay miniature stake holes with
The stake position in sleeve valve barrel grouting hole；
Step S02：Drilled in order at miniature stake holes and sleeve valve barrel grouting hole stake position to projected depth using rig；
Step S03：Embedded mini pile, is filled using slurry feeding pump by Grouting Pipe to miniature stake holes in miniature stake holes
Slurry, after grout cures, backing plate is set in mini pile termination, and apply certain pretightning force；
Step S04：The embedded mini-valve tube in sleeve valve barrel grouting hole, injection sleeve valve sleeve shell material, utilizes valve of tucking inside the sleeve in mini-valve tube
Pipe carries out segmented grouting and reinforcing to substrate country rock.
Substrate country rock can be effectively reinforced by sleeve valve barrel grouting, and can reduces the interstitital texture drawing of tunnel bottom by mini pile should
Power.
It is further that step S03 includes step：Mini pile bottom hole portion will be arrived under Grouting Pipe ozzle, starts slurries conveying
Pump is in the milk by Grouting Pipe to miniature stake holes, after a certain amount of slurries are poured into, slow hoisting grouting pipe until slurries fill it is miniature
Stake holes.
It is further to be embedded in mini pile in step S03 in miniature stake holes, after miniature stake holes slip casting terminates, treat slurries
After solidification, backing plate is set in mini pile and inverted arch filling intersection, and apply certain pretightning force.Mini pile and backing plate are formed
One entirety, make system entirety stress, strengthen steadiness.Miniature stake holes is in the milk by Grouting Pipe using slurry feeding pump.
Be further, in step S04 segmented slip casting include step：Grouting Pipe is put into sleeve valve barrel grouting；To valve of tucking inside the sleeve
The first segment of pipe carries out slip casting；Hoisting grouting pipe carries out slip casting to next section mini-valve tube, until carrying out slip casting to minor details mini-valve tube；
Slip casting effect is checked, slip casting finishes.
It is further that the slip casting step pitch length of the mini-valve tube chooses 0.6-1.0m.
On the other hand, the present invention proposes a kind of tunnel bottom structure for being applied to suppress tunnel bottom interstitital texture protuberance cracking, described
Tunnel bottom structure includes tunnel bottom interstitital texture, mini pile and sleeve valve barrel grouting structure, the miniature stake holes and mini-valve tube of the mini pile
The sleeve valve barrel grouting hole interval array of slip casting structure is laid on the interstitital texture protuberance fracture area of tunnel bottom, miniature stake holes and sleeve valve
Pipe injected hole is arranged in blossom type；
Mini pile is embedded in the miniature stake holes, and the mini pile is anchored by slip casting and substrate country rock；In the sleeve valve
Embedded mini-valve tube in pipe injected hole, and the injection sleeve valve sleeve shell material in mini-valve tube, substrate is reinforced by mini-valve tube delamination pour slurry and enclosed
Rock.
It is further that the miniature stake holes is arranged at the longitudinal midline of tunnel bottom interstitital texture.
It is further that backing plate is set in the mini pile and tunnel bottom interstitital texture intersection.
Using the beneficial effect of the technical program：
The invention is intended to by the way that mini pile and slurry injection technique of sleeve valve tube are applied in combination；Regulation is as caused by inverted arch water pressure
Tunnel bottom interstitital texture protuberance cracking tunnel defect, makes full use of mini pile and sleeve valve barrel grouting two methods features, passes through
It is applied in combination, optimized construction procedure, more reasonably regulation existing tunnel tunnel bottom interstitital texture swells cracking disease problem；It is one
Kind easy construction, substrate country rock can be reinforced, reduce tunnel bottom structure tension, effectively renovating the group that tunnel bottom interstitital texture protuberance ftractures
Box-like Disease Treatment method.
On the basis of the offer integral system stress of mini pile, substrate is reinforced with sleeve valve barrel grouting, makes mini pile more preferable
The effect that the system of having given play to is received, good uplift effect can be provided using mini pile, prevent inverted arch interstitital texture from continuing protuberance and open
Split, reduce inverted arch institute tension stress, effectively regulation is due to the disease of tunnel bottom interstitital texture protuberance cracking caused by inverted arch water pressure.
Mini pile has simple in construction a, quick construction, system entirety stress, the features such as its reasonable stress；Sleeve valve barrel grouting
With the features such as simple in construction, easy for construction, occupied ground is few, consolidation effect is good.This method is noted using mini pile and mini-valve tube
Combined type regulation method is starched, substrate is effectively on the one hand reinforced by sleeve valve barrel grouting；On the other hand can be provided very using mini pile
Good uplift effect, prevent inverted arch interstitital texture from continuing protuberance cracking, reduce inverted arch institute tension stress, renovate well by inverted arch
Water pressure causes tunnel bottom interstitital texture protuberance cracking tunnel defect.
Brief description of the drawings
Fig. 1 is a kind of regulation method schematic flow sheet suitable for tunnel bottom interstitital texture protuberance cracking of the present invention；
Fig. 2 is the schematic flow sheet of mini pile slip casting in the present invention；
Fig. 3 is the schematic flow sheet of sleeve valve barrel grouting in the present invention；
Fig. 4 is a kind of structural representation for being applied to suppress the tunnel bottom structure of tunnel bottom interstitital texture protuberance cracking in the present invention
Figure；
Fig. 5 is a kind of side view for being applied to suppress the tunnel bottom structure of tunnel bottom interstitital texture protuberance cracking in the present invention；
Wherein, 1 is tunnel bottom interstitital texture, and 2 be miniature stake holes, and 3 be sleeve valve barrel grouting hole, and 4 be backing plate.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with the accompanying drawings into one
Step illustrates.
In the present embodiment, shown in Figure 1, the present invention proposes a kind of tunnel bottom interstitital texture that is applied to and swells cracking
Regulation method, including step：
Step S01：The protuberance of the interstitital texture 1 cracking construction area surveying setting-out at tunnel bottom, is staggeredly spaced and lays miniature stake holes 2
With the stake position in sleeve valve barrel grouting hole 3.
Cracking construction area is swelled to tunnel bottom interstitital texture and measures unwrapping wire, mini pile is accurately carried out by design requirement
Laid with sleeve valve barrel grouting stake position.During the design of stake position, miniature stake holes 2 is laid with the interval of sleeve valve barrel grouting hole 3, micro- in blossom type
Type stake lays spacing with sleeve valve barrel grouting to be advisable with 1.0~1.5m, and mini pile is made up of 3 reinforcement weldings.Stake bit plane is laid
Signal is as shown in Figure 4.
Mini pile is applied at the longitudinal midline of tunnel bottom interstitital texture protuberance cracking section, referring to Fig. 4.
Step S02：Drilled in order at miniature stake holes (2) and sleeve valve barrel grouting hole (3) stake position to design using rig
Depth.
Rig, which is marched into the arena, to be placed on the stake position of laying, does level correction, drilling rod head align piles position, rig drill afterwards in place to
Projected depth.
Step S03：The embedded mini pile in miniature stake holes (2), using slurry feeding pump by Grouting Pipe to miniature stake holes
(2) it is in the milk, after grout cures, backing plate 4 is set in mini pile termination, and apply certain pretightning force.
After the completion of drilling, mini pile is put into miniature stake holes 2, Grouting Pipe is inserted in miniature stake holes 2, then again by slip casting
The miniature bottom of stake holes 2 is arrived under pipe ozzle, starts slurry feeding pump, miniature stake holes 2 is in the milk, after a certain amount of slurries are poured into, is delayed
Slow hoisting grouting pipe, until slurries fill miniature stake holes 2, miniature pile construction flow is as shown in Figure 2.
After the miniature slip casting of stake holes 2 terminates in step S03, after grout cures, set in mini pile and inverted arch filling intersection
Backing plate 4 is put, and applies certain pretightning force.Mini pile and backing plate 4 are formed into an entirety, make system entirety stress, is strengthened steady
Solidity.
Step S04：The embedded mini-valve tube in sleeve valve barrel grouting hole (3), segmented is carried out to substrate country rock using mini-valve tube
Slip casting.
After the completion of drilling, mini-valve tube is inserted in sleeve valve barrel grouting hole 3, the injection sleeve valve sleeve shell material in mini-valve tube, using water
Bellows stop grouting plug retrusive segmenting slip casting, until slip casting terminates, sleeve valve barrel grouting construction process is as shown in Figure 3.
As shown in figure 3, segmented slip casting includes step in step S04：Grouting Pipe is put into sleeve valve barrel grouting；To mini-valve tube
First segment carry out slip casting；Hoisting grouting pipe carries out slip casting to next section mini-valve tube, until carrying out slip casting to minor details mini-valve tube；Inspection
Slip casting effect is looked into, slip casting finishes.
The slip casting step pitch length of the mini-valve tube chooses 0.6-1.0m.
To coordinate the realization of the inventive method, based on identical inventive concept, as shown in Figure 4 and Figure 5, the present invention also provides
A kind of tunnel bottom structure for being applied to suppress tunnel bottom interstitital texture protuberance cracking, the tunnel bottom structure include tunnel bottom interstitital texture 1,
Mini pile and sleeve valve barrel grouting structure, the miniature stake holes 2 of the mini pile and the interval of sleeve valve barrel grouting hole 3 row of sleeve valve barrel grouting
Battle array is laid in tunnel bottom interstitital texture 1 and swelled on fracture area, and miniature stake holes 2 is arranged with sleeve valve barrel grouting hole 3 in blossom type；
Mini pile is embedded in the miniature stake holes 2, and the mini pile is anchored by slip casting and substrate country rock；In the sleeve valve
Embedded mini-valve tube in pipe injected hole 3, the injection sleeve valve sleeve shell material in mini-valve tube, substrate is reinforced by mini-valve tube delamination pour slurry and enclosed
Rock.
As the prioritization scheme of such scheme, the miniature stake holes is arranged at the longitudinal midline of tunnel bottom interstitital texture 1
2。
In the mini pile and the intersection of tunnel bottom interstitital texture 1, backing plate 4 is set.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of this reality invention by appended claims and
Its equivalent thereof.
Claims (8)
1. a kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking, it is characterised in that including step：
Step S01：Cracking construction area surveying setting-out is swelled in tunnel bottom interstitital texture (1), staggeredly miniature stake holes (2) is laid at interval
With the stake position of sleeve valve barrel grouting hole (3)；
Step S02：Drilled in order at miniature stake holes (2) and sleeve valve barrel grouting hole (3) stake position to projected depth using rig；
Step S03：The embedded mini pile in miniature stake holes (2), miniature stake holes (2) is filled by Grouting Pipe using slurry feeding pump
Slurry, after grout cures, backing plate (4) is set in mini pile termination, and apply certain pretightning force；
Step S04：The embedded mini-valve tube in sleeve valve barrel grouting hole (3), injection sleeve valve sleeve shell material, utilizes mini-valve tube in mini-valve tube
Segmented grouting and reinforcing is carried out to substrate country rock.
A kind of 2. regulation method suitable for tunnel bottom interstitital texture protuberance cracking according to claim 1, it is characterised in that
Step S03 includes step：Miniature stake holes (2) bottom will be arrived under Grouting Pipe ozzle, starts slurry feeding pump by Grouting Pipe to micro-
Type stake holes (2) is in the milk, and after a certain amount of slurries are poured into, slow hoisting grouting pipe is until slurries fill miniature stake holes (2).
A kind of 3. regulation method suitable for tunnel bottom interstitital texture protuberance cracking according to claim 2, it is characterised in that
Mini pile is embedded in step S03 in miniature stake holes (2), after miniature stake holes (2) slip casting terminates, after grout cures, miniature
Stake sets backing plate (4) with inverted arch filling intersection, and applies certain pretightning force.
A kind of 4. regulation method suitable for tunnel bottom interstitital texture protuberance cracking according to claim 1, it is characterised in that
Segmented slip casting includes step in step S04：Grouting Pipe is put into sleeve valve barrel grouting；Slip casting is carried out to the first segment of mini-valve tube；
Hoisting grouting pipe carries out slip casting to next section mini-valve tube, until carrying out slip casting to minor details mini-valve tube；Inspection slip casting effect, slip casting are complete
Finish.
A kind of 5. regulation method suitable for tunnel bottom interstitital texture protuberance cracking according to claim 4, it is characterised in that
The slip casting step pitch length of the mini-valve tube chooses 0.6-1.0m.
A kind of 6. tunnel bottom structure for being applied to suppress tunnel bottom interstitital texture protuberance cracking, it is characterised in that the tunnel bottom structure bag
Include tunnel bottom interstitital texture (1), mini pile and sleeve valve barrel grouting structure, the miniature stake holes (2) and sleeve valve barrel grouting of the mini pile
Sleeve valve barrel grouting hole (3) the interval array of structure is laid on tunnel bottom interstitital texture (1) protuberance fracture area, miniature stake holes (2)
Arranged with sleeve valve barrel grouting hole (3) in blossom type；
Mini pile is embedded in the miniature stake holes (2), and the mini pile is anchored by slip casting and substrate country rock；In the mini-valve tube
Embedded mini-valve tube in injected hole (3), and the injection sleeve valve sleeve shell material in mini-valve tube, and substrate is reinforced by mini-valve tube delamination pour slurry
Country rock.
7. a kind of tunnel bottom structure for being applied to suppress tunnel bottom interstitital texture protuberance cracking according to claim 6, its feature
It is, the miniature stake holes (2) is arranged at the longitudinal midline of tunnel bottom interstitital texture (1).
8. a kind of tunnel bottom structure for being applied to suppress tunnel bottom interstitital texture protuberance cracking according to claim 7, its feature
It is, backing plate (4) is set in the mini pile and tunnel bottom interstitital texture (1) intersection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538478.9A CN106013264B (en) | 2016-07-08 | 2016-07-08 | A kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538478.9A CN106013264B (en) | 2016-07-08 | 2016-07-08 | A kind of regulation method suitable for tunnel bottom interstitital texture protuberance cracking |
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| CN106013264A CN106013264A (en) | 2016-10-12 |
| CN106013264B true CN106013264B (en) | 2018-03-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013231B (en) * | 2017-05-07 | 2021-05-25 | 中铁十八局集团有限公司 | Construction method for controlling grouting reinforcement range in large-porosity giant rock pile loose body |
| CN107269292A (en) * | 2017-05-22 | 2017-10-20 | 中铁第勘察设计院集团有限公司 | The stake beam composite construction and its construction method reinforced for Tunnel Base |
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| JPH09228347A (en) * | 1996-02-27 | 1997-09-02 | Maeda Corp | Construction method of temporary drainage canal in concrete dam bank |
| KR20050079372A (en) * | 2004-02-05 | 2005-08-10 | (주)신성엔지니어링 | Grouting method to the underdrain-installed point in a hillside road |
| CN202644591U (en) * | 2011-12-28 | 2013-01-02 | 中铁十九局集团轨道交通工程有限公司 | A reinforced bridge pile foundation in tunnel construction under the geological condition of water-rich quicksand |
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