CN107120124A - A kind of method for protecting support for tunnel - Google Patents
A kind of method for protecting support for tunnel Download PDFInfo
- Publication number
- CN107120124A CN107120124A CN201710165792.1A CN201710165792A CN107120124A CN 107120124 A CN107120124 A CN 107120124A CN 201710165792 A CN201710165792 A CN 201710165792A CN 107120124 A CN107120124 A CN 107120124A
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- CN
- China
- Prior art keywords
- corrugated plating
- tunnel
- ring
- board component
- plating ring
- 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
-
- 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
Abstract
The present invention proposes a kind of method for protecting support in tunnel, including：Make ripple board component as the supporting construction in tunnel, this method can preferably utilize the characteristics such as the good bearing capacity height of corrugated plating so that tunnel has easy construction, the advantages of good in economic efficiency.
Description
Technical field
The present invention relates to technical field of tunnel construction, and in particular to a kind of method for protecting support for tunnel.
Background technology
With the quickening of transport development speed, Tunnel Engineering is also developed rapidly.No matter for railway tunnel or
Vcehicular tunnel, its security requirement is high, then the supporting construction in tunnel must is fulfilled for safe and reliable and life requirement.
In the prior art, supporting is usually carried out to tunnel using concrete composite lining method, its preliminary bracing is main
Undertake the whole load of construction stage and the primary load of operation stage.Secondary supporting undertakes initial stage mainly as safety stock
Additional load caused by load or creep of soft rock that supporting may be deteriorated and acted on secondary lining, changes in environmental conditions etc..
But, the problems such as concrete support often has construction complexity, long construction period
The content of the invention
For some or all of of the above-mentioned technical problem in the presence of prior art, the present invention, which proposes one kind, to be used for
The method for protecting support in tunnel.This method can make preliminary bracing and secondary supporting of the corrugated plating as tunnel, replace the first of concrete
Phase lining cutting and secondary lining, can preferably utilize the characteristics such as the good bearing capacity height of corrugated plating so that tunnel has construction letter
Just, good in economic efficiency the advantages of.
According to the method for protecting support for tunnel of the present invention, including：Make ripple board component as the supporting construction in tunnel.
In one embodiment, including：After tunnel excavation, matching tunnel-shaped formula lays ripple board component to form the
One corrugated plating ring, then, is in the milk in the gap between the first corrugated plating ring and stratum, wherein, the first corrugated ring enters with stratum
The row locking angle is connected.
In one embodiment, protruding-type sets friction member on the inner surface of the first corrugated plating ring.
In one embodiment, in locking angle connection, initially pass through the first corrugated plating ring and open up injected hole on stratum, then to
Insertion anchor pole in injected hole, the then slip casting into anchor pole then blocks the opening of anchor pole and is arranged pad on the termination of anchor pole
And nut.
In one embodiment, the shim constructions being arranged on anchor pole are the arcuation of matching ripple board component.
In one embodiment, into anchor pole, the pressure of slip casting is 0.4-0.5 MPas, or/and institute's injection slurry is cement mortar.
In one embodiment, on tunnel cross-section, using being excavated stage by stage, excavated again in corresponding positions per the stage
Ripple board component is installed, the ripple board component set afterwards and the ripple board component first set splice,
Or/and on tunnel longitudinal direction, using being excavated stage by stage, the first corrugated plating ring for setting afterwards and first set the
One corrugated plating ring is overlapped.
In one embodiment, the ripple of 3/4ths ripple board components is at least overlapped between the first adjacent corrugated plating ring
Peak, and collision mat is set in the lap-joint of the first corrugated plating ring.
In one embodiment, after tunnel formation upper level supporting, matching upper level supporting shape formula lays corrugated plating
Component is to form the second corrugated plating ring of non-close, then, is filled in the gap between the second corrugated plating ring and upper level supporting
Slurry, wherein, the second corrugated ring is fixedly connected with the inverted arch in tunnel.
In one embodiment, ground connection operation is carried out to the second corrugated plating ring.
Compared with prior art, it is an advantage of the current invention that using ripple board component as the supporting construction in tunnel, exactly
It make use of ripple board component bearing capacity high, the good advantage of mechanical condition so that tunnel support has simple to operate, economic benefit
The benefit such as good.
Brief description of the drawings
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing, in figure：
Fig. 1 shows the construction schematic diagram of the preliminary bracing according to the present invention；
Fig. 2 shows the construction schematic diagram of the secondary supporting according to the present invention；
Fig. 3 shows the adjacent corrugated plating ring connection top view of the present invention；
Fig. 4 shows the overlap joint profile of one embodiment between the adjacent corrugated plating ring according to the present invention；
In the accompanying drawings, identical part uses identical reference, and accompanying drawing is not drawn according to actual ratio.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Method for tunnel support is discussed in detail according to Fig. 1 and 2.In constructing tunnel, using ripple board component conduct
The supporting in tunnel.Ripple board component may be used as preliminary bracing, substitute lining cutting at initial stage.Ripple board component is also used as later stage branch
Shield, and replace secondary lining.In specific constructing tunnel, can according to different requirement of engineering, supporting in the early stage or/and after
Ripple board component is used in phase supporting.This form of construction work can be excellent all than larger using corrugated plating bending strength and compression strength
Point, adds the stability in tunnel so that tunnel has bearing capacity high, the characteristics of shock resistance is strong.Meanwhile, corrugated plating can be with
Installed using scene, it is easy with transport, construction simply, the advantages of short time limit.
In one embodiment, ripple board component is used with preliminary bracing, replaces exemplified by first lining cutting, discuss the branch in tunnel
Maintaining method.As shown in figure 1, after the excavation of tunnel 1, the matching shape formula of tunnel 1 lays ripple board component 2 to form the first corrugated plating
Ring 3.Then, it is in the milk in the gap between the first corrugated plating ring 3 and stratum.
Specifically, exemplified by carrying out three-level benching tunnelling method excavation by tunnel.First, the first order step of tunneling is (namely
A part is represented in Fig. 1).The splicing ripple board component 2 in first step part, to match the arcuate part in tunnel.It is being installed to
After the ripple board component 2 of position, carry out locking angle operation in the lower end of ripple board component 2 and (locking angle tool hereinafter will be described in detail
Body mode of operation) so that ripple board component 2 and stratum to be fixed.Then, the second step of tunneling (represents B in namely Fig. 1
Part).The shape at splicing ripple board component 2, the second step to match tunnel in second step part.Corrugated plating group at this
Part 2 is fixedly connected with the ripple board component 2 at already installed first step.And after the ripple board component 2 is installed,
The lower end of ripple board component 2 carries out locking angle operation.Similarly, then, the 3rd step of tunneling (represents C in namely Fig. 1
Part).The shape at the 3rd step part splicing ripple board component 2, the 3rd step to match tunnel.Corrugated plating group at this
Part 2 is fixedly connected with the ripple board component 2 at already installed second step.And after the ripple board component 2 is installed,
The lower end of ripple board component 2 carries out locking angle operation.Subsequently, the inverted arch part (D parts in Fig. 1) of tunneling.In inverted arch portion
Set up separately and put ripple board component 2, to be connected with the ripple board component 2 being arranged at the 3rd step.And in the upper of the ripple board component 2
End carries out locking angle operation.So far, on the section in tunnel, ripple board component 2 forms the first corrugated plating ring 3.
It should be noted that in said one digging process, tunnel extends about 1.5 to 2.5 meters in the vertical.Then
Aforesaid operations are repeated, to promote the length in tunnel in the vertical.In tunnel progradation, the first corrugated plating ring being correspondingly formed
3 the first corrugated plating rings 3 formed with a upper digging process are overlapped, so that the corrugated plating for being longitudinally formed similar tubulose in tunnel
Ring group.When the length of the first corrugated plating ring 3 of splicing reaches first size, between the first corrugated ring 3 and the gap on stratum
Concrete perfusion.Preferably, first size is 10 to 12 meters.
It is between the first corrugated ring 3 and the gap on stratum after concrete perfusion, also to carry out the filling of tunnel bottom.It is,
Concrete perfusion at E in Fig. 1.
After using the formation preliminary bracing of ripple board component 2, later stage supporting is set on the basis of supporting in the early stage.Without
It is to use concrete lining mode or corrugated plating modularity by later stage supporting, the first corrugated plating ring 3 of preliminary bracing is both needed to
Fixation is contacted with concrete.In a preferred embodiment, in order to increase the friction between concrete and ripple board component
Power, it is ensured that the stability in tunnel.Friction member (not shown) is set on the inner side table of the first corrugated plating ring 3.The friction member
It is so structured that convex type is arranged on the reinforcing bar on the inner side table of the first corrugated plating ring 3.For example, in the first corrugated plating ring 3
On side surface, reinforcing bar can be laid in blossom type.Specific size of space etc. can be set according to the difference of engineering.
Wherein, in above-mentioned locking angle operation, initially pass through the first corrugated plating ring 3 and open up injected hole on stratum, then to note
Starch and anchor pole 4 is inserted in hole, the then slip casting into anchor pole 4 then blocks the opening of anchor pole 4 and is arranged pad and spiral shell on anchor pole 4
It is female.Stratum and the first corrugated plating ring 3 can be connected by aforesaid operations, the stability of ripple board component supporting construction is added.
Preferably, the pad being arranged on anchor pole 4 can be structured as the arcuation of matching ripple board component.This setup can cause solid
Fixed operation is more laborsaving, connects more firm.It is further preferred that the pressure of slip casting is 0.4-0.5 MPas into anchor pole 4, it is, for example,
0.45 MPa.The injection slurry injected into anchor pole 4 is cement mortar, and this slip casting economy, slip casting effect is good, can save and be constructed into
This.Can also be according to different geological conditions, from the anchor pole 4 of different sizes and model.For example, the length of anchor pole 4 is 4 meters.
Wherein, it is provided with the gap to the first corrugated ring 3 and stratum before concrete perfusion on ripple board component 2
Grout hole.Certainly, it can also be preset on corrugated plating that grout hole, which can be that scene opens up,.In order to reach good grouting effect
Really, it is preferable that distribution of the grout hole on corrugated plating ring 3 can be blossom type.For example, grout hole set-point can for vault,
Abutment wall middle part, abutment wall and inverted arch junction and inverted arch center.The distribution distance of grout hole can be 4-6 meters.It is, in arch
The distance between two adjacent grout holes on top are 4-6 meters, such as 5 meters.By grout hole to the first corrugated ring 3 and stratum
Concrete perfusion in gap.Wherein, the pressure of concrete perfusion can be 0.4-0.5 MPas.
According to Tunnel Engineering needs, the first corrugated plating ring 3 can do zinc-plated processing, to increase its antiseptic power.
In another embodiment, ripple board component is used with later stage supporting, replaces exemplified by secondary lining, discuss tunnel
Method for protecting support.As shown in Fig. 2 in the early stage (it should be noted that preliminary bracing can use concrete lining shape after the completion of supporting
Formula can also use corrugated plating form), the shape that preliminary bracing is matched in tunnel lays ripple board component 2 to form non-close
The second corrugated plating ring 5.The second corrugated plating ring 5 can be spliced at the scene.Then, the second corrugated plating ring 5 is consolidated
It is fixed.Finally, the concrete perfusion between the second corrugated plating ring 5 and preliminary bracing.
On the specific fixed form of the second corrugated plating ring 5, as shown in Figure 2.Specifically, reserved after inverted arch construction solid
Determine part 6.Meanwhile, in the lower end of the second corrugated plating ring 5, angle steel 7 is set.After the second corrugated plating ring 5 is installed in place so that angle steel 7
It is fixedly connected with fixture 6, the second corrugated plating ring 5 is fixed.Preferably, fixture 6 is reinforcing bar.This attachment structure letter
It is single, it is easy to accomplish.In a preferred embodiment, the also pre-buried finite place piece 8 on inverted arch, for limiting the second corrugated plating ring
5 position, prevents the excessive deformation of the second corrugated plating ring 5 from being moved to the both sides in tunnel.In the horizontal, locating part 8 is located at fixture 6
Outside.Preferably, locating part 8 is the reinforcing bar being implanted on inverted arch.On the longitudinal direction in tunnel, two can be set with compartment
Placing of reinforcement fixes the second corrugated plating ring 5 and prevents the excessive deformation of the second corrugated plating ring 5 as fixture 6 and locating part 8 to play
Effect.It is further preferred that after the second corrugated plating ring 5 is fixed with fixture 6, can also increase and take root in part 9, by angle steel
7 are fixed on inverted arch, and this mode improves the connective stability of the second corrugated plating ring 5.
The mode of operation of concrete perfusion is referred to above-mentioned first between the second corrugated plating ring 5 and preliminary bracing
The mode of concrete perfusion between corrugated plating ring 3 and stratum, will not be repeated here.
No matter preliminary bracing or later stage supporting, supporting is formed by corrugated plating ring overlap joint, and corrugated plating ring is by corrugated plating group
Part is spliced, and ripple board component 2 is spliced further through corrugated plating.In the circumferential, different ripple board components 2 splices from beginning to end
It is linked to be ring (can be closing according to different needs, or non-close).In the vertical, corrugated plating ring is (for example, first
Corrugated plating ring 3) multiple corrugated platings between splicing seams and adjacent corrugated plating ring multiple corrugated platings between splicing seams it is wrong
Open, as shown in Figure 3.This method optimizing stress of ripple board component, improves its bearing capacity.
In order to ensure to be overlapped between the fastness of connection, adjacent corrugated plating ring.It is, on the longitudinal direction in tunnel, phase
Overlapped between adjacent corrugated plating ring.As shown in Figure 4, it is preferable that adjacent corrugated plating ring is (for example, the first corrugated plating ring 3 or the second
Corrugated plating ring 5) between at least overlap the crest of 3/4ths corrugated platings, and be bolted adjacent corrugated plating ring.For
Leak is prevented, the lap-joint between corrugated plating ring sets collision mat 10.The collision mat 10 is rubber parts, and passes through bolt quilt
Compression is arranged between two corrugated plating rings.
During tunnel support, connect to form corrugated plating ring in ad-hoc location often between ripple board component.And
Ripple board component can be attached using bolt.In this case, in order to which human users are convenient, nut can be fixed in advance
In the outside for the corrugated plating for needing to overlap.During attended operation, operating personnel sequentially pass through two from inside to outside using bolt
Block corrugated plating and fixed with nut driving.This mode of operation is fairly simple, requires low to operating space.
According to different Tunnel Engineering needs, in addition it is also necessary to carry out ground connection operation to the second corrugated plating ring.Such as the second corrugated plating
Ring is connected with Through ground wire in tunnel ditch or insulated terminal, or is connected with the aerial earth wire of vault.According to engineering need
Will, insulation processing also is done to the second corrugated plating ring, for example, spraying two component polyurethane combination on the surface of the second corrugated plating ring
Thing, to improve the insulation effect of corrugated plating ring.
Similarly, it is necessary between the second corrugated plating ring 5 and preliminary bracing concrete perfusion, then can be in the second corrugated plating
Ring 5 is provided with for increasing the friction member (not shown) of frictional force.The reinforcing bar that friction member can be set for protruding-type.When
So, friction member can also be reserved in preliminary bracing.
The preferred embodiment of the present invention is these are only, but the scope of the present invention is not limited thereto, any this area
Technical staff in technical scope disclosed by the invention, easily can be changed or change, and this be altered or varied all
It should be included within the scope of the present invention.Therefore, protection scope of the present invention should using the protection domain of claims as
It is accurate.
Claims (10)
1. a kind of method for protecting support for tunnel, it is characterised in that including：Make ripple board component as the supporting construction in tunnel.
2. according to the method described in claim 1, it is characterised in that including：After tunnel excavation, matching tunnel-shaped formula is laid
The ripple board component is to form the first corrugated plating ring, then, is filled in the gap between the first corrugated plating ring and stratum
Slurry, wherein, first corrugated ring carries out the locking angle with stratum and is connected.
3. method according to claim 2, it is characterised in that the protruding-type on the inner surface of the first corrugated plating ring
Friction member is set.
4. according to the method in claim 2 or 3, it is characterised in that in locking angle connection, initially pass through the first corrugated plating ring and exist
Injected hole is opened up on stratum, then inserts into the injected hole anchor pole, the then slip casting into the anchor pole then blocks the anchor
The opening of bar is simultaneously arranged pad and nut on the termination of the anchor pole.
5. method according to claim 4, it is characterised in that the shim constructions being arranged on anchor pole are the matching ripple
The arcuation of board component.
6. the method according to claim 4 or 5, it is characterised in that the pressure of slip casting is 0.4-0.5 million into the anchor pole
Handkerchief, or/and institute's injection slurry are cement mortar.
7. the method according to any one of claim 2 to 6, it is characterised in that on tunnel cross-section, using entering stage by stage
Row is excavated, and has been excavated per the stage and has been set the ripple board component, the ripple board component set afterwards and elder generation in relevant position again
The ripple board component splicing set,
Or/and on tunnel longitudinal direction, using being excavated stage by stage, the first corrugated plating ring set afterwards and the institute first set
State the first corrugated plating ring overlap joint.
8. method according to claim 7, it is characterised in that at least overlap four between adjacent the first corrugated plating ring
The crest of/tri- ripple board components, and collision mat is set in the lap-joint of the first corrugated plating ring.
9. the method according to any one of claim 1 to 8, it is characterised in that after tunnel formation upper level supporting,
The ripple board component is laid to form the second corrugated plating ring of non-close with the upper level supporting shape formula, then, in institute
State in the gap between the second corrugated plating ring and upper level supporting and be in the milk, wherein, the inverted arch of second corrugated ring and tunnel is consolidated
Fixed connection.
10. method according to claim 9, it is characterised in that ground connection operation is carried out to the second corrugated plating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710165792.1A CN107120124A (en) | 2017-03-20 | 2017-03-20 | A kind of method for protecting support for tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165792.1A CN107120124A (en) | 2017-03-20 | 2017-03-20 | A kind of method for protecting support for tunnel |
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| CN201710165792.1A Pending CN107120124A (en) | 2017-03-20 | 2017-03-20 | A kind of method for protecting support for tunnel |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806349A (en) * | 2017-10-13 | 2018-03-16 | 北京工业大学 | A kind of steel FRP complex waves card tunnel secondary liner structure and its apply method |
| CN108397215A (en) * | 2018-04-11 | 2018-08-14 | 云南公建科技有限公司 | A kind of tunnel assembled corrugated steel preliminary bracing structure and its installation method |
| CN108518229A (en) * | 2018-04-24 | 2018-09-11 | 中铁五局集团第五工程有限责任公司 | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure and construction method |
| CN108561158A (en) * | 2018-07-17 | 2018-09-21 | 中铁二院昆明勘察设计研究院有限责任公司 | Rapidly-assembled Tunnel structure and construction method |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN110410099A (en) * | 2019-05-09 | 2019-11-05 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | It is a kind of using corrugated plating come the construction method of Strengthening Tunnel |
| CN110593905A (en) * | 2019-09-29 | 2019-12-20 | 同济大学 | Method for constructing full section of tunnel with advanced pre-reinforcement, primary lining and secondary lining |
| CN110593890A (en) * | 2019-08-16 | 2019-12-20 | 同济大学 | Tunnel corrugated steel double-layer primary lining supporting method and structure |
| CN111119948A (en) * | 2019-11-26 | 2020-05-08 | 中铁第一勘察设计院集团有限公司 | Rock burst prevention supporting structure of high-ground-stress hard rock tunnel and construction method of rock burst prevention supporting structure |
| CN111472814A (en) * | 2020-04-08 | 2020-07-31 | 北京交通大学 | Method for rapidly sealing primary branch |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806349B (en) * | 2017-10-13 | 2019-07-05 | 北京工业大学 | A kind of steel-FRP complex wave card tunnel secondary liner structure and its apply method |
| CN107806349A (en) * | 2017-10-13 | 2018-03-16 | 北京工业大学 | A kind of steel FRP complex waves card tunnel secondary liner structure and its apply method |
| CN108397215A (en) * | 2018-04-11 | 2018-08-14 | 云南公建科技有限公司 | A kind of tunnel assembled corrugated steel preliminary bracing structure and its installation method |
| CN108518229A (en) * | 2018-04-24 | 2018-09-11 | 中铁五局集团第五工程有限责任公司 | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure and construction method |
| CN108561158B (en) * | 2018-07-17 | 2023-08-29 | 中铁二院昆明勘察设计研究院有限责任公司 | Quick assembly type tunnel primary support structure and construction method |
| CN108561158A (en) * | 2018-07-17 | 2018-09-21 | 中铁二院昆明勘察设计研究院有限责任公司 | Rapidly-assembled Tunnel structure and construction method |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN110410099A (en) * | 2019-05-09 | 2019-11-05 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | It is a kind of using corrugated plating come the construction method of Strengthening Tunnel |
| CN110410099B (en) * | 2019-05-09 | 2021-10-19 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Construction method for reinforcing tunnel by corrugated plate |
| CN110593890A (en) * | 2019-08-16 | 2019-12-20 | 同济大学 | Tunnel corrugated steel double-layer primary lining supporting method and structure |
| CN110593905B (en) * | 2019-09-29 | 2020-08-18 | 同济大学 | Method for constructing full section of tunnel with advanced pre-reinforcement, primary lining and secondary lining |
| CN110593905A (en) * | 2019-09-29 | 2019-12-20 | 同济大学 | Method for constructing full section of tunnel with advanced pre-reinforcement, primary lining and secondary lining |
| CN111119948A (en) * | 2019-11-26 | 2020-05-08 | 中铁第一勘察设计院集团有限公司 | Rock burst prevention supporting structure of high-ground-stress hard rock tunnel and construction method of rock burst prevention supporting structure |
| CN111119948B (en) * | 2019-11-26 | 2022-04-22 | 中铁第一勘察设计院集团有限公司 | Construction method of rock burst prevention supporting structure of high-ground-stress hard rock tunnel |
| CN111472814A (en) * | 2020-04-08 | 2020-07-31 | 北京交通大学 | Method for rapidly sealing primary branch |
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Application publication date: 20170901 |