CN108131144A - A kind of construction method for widening traffic tunnel and uninterrupted traffic - Google Patents
A kind of construction method for widening traffic tunnel and uninterrupted traffic Download PDFInfo
- Publication number
- CN108131144A CN108131144A CN201711268427.XA CN201711268427A CN108131144A CN 108131144 A CN108131144 A CN 108131144A CN 201711268427 A CN201711268427 A CN 201711268427A CN 108131144 A CN108131144 A CN 108131144A
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- Prior art keywords
- traffic
- tunnel
- widening
- shield
- construction
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
-
- 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
- E21D11/14—Lining predominantly with metal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of construction methods for widening traffic tunnel and uninterrupted traffic, and existing traffic and the serious disturbance tunnel periphery soil body are interrupted when solving the problems, such as in the prior art to widen existing tunnel.The present invention includes the following steps：Traffic shield, precutting trough construction, section excavation, strengthening supporting, prefabricated pipe section assembly, setting tunnel inverted arch are laid with, more than working cycles is repeated and is widened until completing original tunnel.The present invention does not only interfere with existing traffic, but also the soil body around tunnel will not be caused to disturb, and construction safety when being widened to existing tunnel, has very big application value.
Description
Technical field
The present invention relates to technical field of tunnel construction, particularly relate to a kind of construction for widening traffic tunnel and uninterrupted traffic
Method.
Background technology
At present, it is higher and higher to the through-current capacity requirement of road with the development of society, the magnitude of traffic flow is increasing, in order to
The unimpeded of road is kept, it is very necessary that existing traffic tunnel is widened.Existing traffic tunnel is widened, it is necessary to consider such as
What maintains current traffic, if suspends traffic or changes its course.But suspend traffic, it can be brought sternly to current traffic
The adverse effect of weight, causes the congestion of existing traffic；Or change its course, it can occupied space resource increase land seizure amount.Meanwhile
It must also consider how broadening mode copes with the soil body around the tunnel disturbed when building old tunnel, how to avoid to tunnel
The soil body of road profile periphery is disturbed again.
Invention content
For the deficiency in above-mentioned background technology, the present invention proposes a kind of construction for widening traffic tunnel and uninterrupted traffic
Method solves and existing traffic is interrupted when being widened in the prior art to existing tunnel and the serious disturbance tunnel periphery soil body is asked
Topic.
The technical proposal of the invention is realized in this way：A kind of construction method for widening traffic tunnel and uninterrupted traffic,
Include the following steps：
Step 1：Traffic shield is laid with, traffic shield is laid in existing tunnel, traffic shield is original traffic route and will
The construction and excavation region segmentation widened comes, and traffic shield is circular for traffic aisle, periphery and the original of traffic shield
It is construction reserved space between tunnel Internal periphery；
Step 2：Precutting trough is constructed, and is continuously cut along the predetermined tunnel cross-section periphery widened using pre-cut scouring machine, while
Casting concrete in cutting groove forms the protective case of dome-shaped after the concrete setting in precutting trough；
Step 3, section excavation carry out widening the excavation driving in face, excavate pick under the shielding of the protective case described in step 2
Into excavation face of the position between protective case and former tunnel Internal periphery, what the process that driving is excavated in face of widening covered always in protective case
It is carried out in length；
Step 4, strengthening supporting carry out widening after face excavates driving for step 3, along exposed protective case installation support steel arch-shelf,
Gunite concrete carries out strengthening supporting in support steel arch-shelf, along the inside of protective case after setting support steel arch-shelf and gunite concrete
Face forms smoother branch sheath；
Step 5, prefabricated pipe section are assembled, along the branch sheath medial surface assembly prefabricated pipe section described in step 4, after prefabricated pipe section assembly
Section of jurisdiction Load -carring arch is formed on the inside of branch sheath；
Step 6 sets tunnel inverted arch, and inverted arch link block is set between the bottom of the section of jurisdiction Load -carring arch described in step 5, makes pipe
Piece Load -carring arch and inverted arch form a complete section of jurisdiction carrying arcuation ring；
Step 7 repeats step 2 to the constructing operation of step 6, until complete whole tunnel widen and lining cutting, it is whole
The dismounting traffic shield after the completion of widening lining cutting in tunnel.
Further, the traffic shield described in step 1 disposably spreads complete strips tunnel, and whole tunnel to be done is opened up
All traffic shields are disposably removed after wide and lining cutting.
Further, the traffic shield described in step 1 is the prefabricated shield of pin-connected panel.
Further, the prefabricated shield of the pin-connected panel is the prefabricated component of steel machine-shaping or is what armored concrete made
Prefabricated component.
Further, after step 2 is carried out, before step 3, glass fibre bolt anchorage is carried out to excavation face and is applied
Work.
Further, after step 2 is carried out, before step 3, pre-grouting strengthening construction is carried out to excavation face.
Further, the inverted arch link block described in step 6 mutually splices with former tunnel inverted arch.
The present invention using protection shield isolate traffic aisle and construct reserved space, can in the case where not influencing existing traffic into
It widens in row tunnel；Protection shield can not only effectively improve construction efficiency using prefabricated component assembly, but also can reduce construction pair
The influence of existing traffic；Using pre-cut channel process, the section that needs to excavate is isolated using soil layer is cut, can be dropped to the maximum extent
The disturbance that the low soil layer to around tunnel generates, ensure that the stability of soil layer around tunnel, while be poured in precutting trough mixed
The protective case that solidifying soil is formed can effectively support the soil body of precutting trough periphery, carry out advance reinforcement safeguard procedures, avoid
The soil property of the precutting trough periphery soil body is soft and ground is caused to cave in or swell and seriously affects construction speed；In precutting trough and former tunnel
Glass fibre anchor pole between road Internal periphery is set, the soil body can be effectively prevent to loosen and large area is caused to cave in, ensure that construction
It successfully carries out, the horizontal pre-grouting of carry out can further effectively prevent the soil body to loosen and large area is caused to collapse in excavation face
It collapses, ensure that excavating tunneling construction successfully carries out；Using inverted arch connection prefabricated pipe section and the inverted arch in former tunnel, can not only save
Saving construction material reduces construction cost, but also can be spliced based on former tunnel inverted arch, and then make construction more just
It is prompt.
Description of the drawings
In order to illustrate the embodiments of the present invention more clearly, attached drawing makees letter needed in being described below to embodiment
Singly introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for the common skill in this field
For art personnel, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the Construction Principle schematic diagram by longitudinal profiled outline at tunnel center；
Fig. 2 is the sectional view in A-A faces in Fig. 1；
Fig. 3 is the sectional view in the B-B faces in Fig. 1；
In figure：1- originals tunnel Internal periphery, the new tunnel Internal peripheries of 2-, 3- traffic shields, 4- precutting troughs, 5- support steel arch-shelfs, 6- are mixed
Solidifying soil, 7- sections of jurisdiction Load -carring arch, 7a prefabricated pipe sections, 7b- wedgings section of jurisdiction, 8- excavation faces, 9- glass fibre anchor poles, 10- originals tunnel is faced upward
Arch, 11- inverted arch link blocks.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of not making the creative labor
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1 to Figure 3, embodiment 1, a kind of construction method for widening traffic tunnel and uninterrupted traffic, including with
Lower step：
Step 1：Traffic shield 3 is laid with, prefabricated traffic shield 3 is laid in existing tunnel, traffic shield 3 is by reinforced concrete
Soil makes, and traffic shield 3 is through entire tunnel and original traffic route and the construction and excavation region segmentation that will be widened
It comes, traffic shield 3 is circular for traffic aisle, and the peripheral of traffic shield is left blank in advance between former tunnel Internal periphery for construction
Between.
Step 2：Precutting trough is constructed, and is continuously cut along the predetermined tunnel cross-section periphery widened using pre-cut scouring machine, together
When in precutting trough 4 casting concrete, the protective case of dome-shaped is formed after the concrete setting in precutting trough 4.Protective case is along tunnel wheel
Exterior feature plays support and protective effect in dome-shaped.
Step 3, section excavation carry out widening the excavation driving in face, are opened under the shielding of the protective case described in step 2
Excavate into excavation face 8 of the position between precutting trough 4 and former tunnel edge 1, the process that excavation face 8 excavates driving protecting always
It is carried out in the length of shell covering；The construction of precutting trough 4 is worked by the way of cutting, the soil body is not caused to disturb.
Step 4, strengthening supporting carry out widening after face excavates driving for step 3, branch are set along exposed protective case inner surface
Steel arch-shelf 5 is supportted, and gunite concrete 6 carries out strengthening supporting in support steel arch-shelf 5, setting support steel arch-shelf 5 and injection are mixed
Smoother branch sheath is formed along the medial surface of precutting trough 4 after solidifying soil 6.
Step 5, prefabricated pipe section is assembled, along the branch sheath medial surface assembly prefabricated pipe section 7a described in step 4, prefabricated pipe section
Section of jurisdiction Load -carring arch 7 is formed after 7a assembly on the inside of branch sheath, the medial surface of section of jurisdiction Load -carring arch 7 forms new tunnel Internal periphery 2.
Step 6 sets tunnel inverted arch, and inverted arch link block is set between the bottom of the section of jurisdiction Load -carring arch 7 described in step 5
11, section of jurisdiction Load -carring arch 7 and inverted arch 11 is made to form a complete section of jurisdiction carrying arcuation ring；
Step 7 repeats step 2 to the constructing operation of step 6, and the depth that the precutting trough 4 in step 2 is cut every time is
3 meters, until complete whole tunnel widen and lining cutting, widening for whole tunnel remove traffic shield 3 after the completion of lining cutting, complete tunnel
Widen work in road.
Embodiment 2, a kind of construction method for widening traffic tunnel and uninterrupted traffic, the traffic shield described in step 1
3 be the prefabricated component of steel machine-shaping, and protection shield can not only effectively improve construction efficiency using prefabricated component assembly, but also can be with
Reduce influence of the construction to existing traffic.
The depth that precutting trough 4 in step 2 is cut every time is 4 meters, after step 2 is carried out, before step 3, is excavated
Setting glass fibre anchor pole 9 is reinforced in face 8, and 8 soil body of excavation face can be effectively prevent to loosen and large area is caused to cave in, and is protected
Construction has been demonstrate,proved successfully to carry out.Other steps of the present embodiment are same as Example 1.
Embodiment 3, a kind of construction method for widening traffic tunnel and uninterrupted traffic, the precutting trough 4 in step 2 are each
The depth of cutting is 6 meters, and after step 2 is carried out, before step 3, pre-grouting reinforcing, Ke Yijin are carried out in excavation face 8
One step effectively prevent 8 soil body of excavation face to loosen and large area is caused to cave in, and ensure that construction successfully carries out.The present embodiment its
His step is same as Example 2.
Embodiment 4, a kind of construction method for widening traffic tunnel and uninterrupted traffic, the assembled prefabricated pipe described in step 5
Wedging carries out prefabricated pipe section 7a, while the back of section of jurisdiction ring 7 is carried out using conventional method using wedging section of jurisdiction 7b during piece 7a
Fill slip casting.It is used cooperatively using wedging section of jurisdiction 7b and prefabricated pipe section 7a, the fastening of prefabricated pipe section 7a assembly can be effectively ensured
Performance is filled slip casting to the back of section of jurisdiction ring 7 using conventional method, can be further ensured that the reliability of support.This implementation
Other steps of example are same as Example 1.
Embodiment 5, a kind of construction method for widening traffic tunnel and uninterrupted traffic, the inverted arch connection described in step 6
Block 11 splices with 10 phase of former tunnel inverted arch.Prefabricated pipe section 7a and former tunnel inverted arch 10 are connected using inverted arch link block 11, not only may be used
Construction cost is reduced, but also can be spliced, and then make construction based on former tunnel inverted arch 10 to save construction material
It is more convenient.Other steps of the present embodiment are same as Example 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of construction method for widening traffic tunnel and uninterrupted traffic, which is characterized in that include the following steps：
Step 1：Traffic shield is laid with, traffic shield is laid in existing tunnel, traffic shield is original traffic route and will
The construction and excavation region segmentation widened comes, and traffic shield is circular for traffic aisle, periphery and the original of traffic shield
It is construction reserved space between tunnel Internal periphery；
Step 2：Precutting trough is constructed, and is continuously cut along the predetermined tunnel cross-section periphery widened using pre-cut scouring machine, while
Casting concrete in precutting trough forms the protective case of dome-shaped after the concrete setting in precutting trough；
Step 3, section excavation carry out widening the excavation driving in face, excavate pick under the shielding of the protective case described in step 2
Into excavation face of the position between protective case and former tunnel Internal periphery, what the process that driving is excavated in face of widening covered always in protective case
It is carried out in length；
Step 4, strengthening supporting carry out widening after face excavates driving for step 3, along exposed protective case installation support steel arch-shelf,
Gunite concrete carries out strengthening supporting in support steel arch-shelf, along the inside of protective case after setting support steel arch-shelf and gunite concrete
Face forms smoother branch sheath；
Step 5, prefabricated pipe section are assembled, along the branch sheath medial surface assembly prefabricated pipe section described in step 4, after prefabricated pipe section assembly
Section of jurisdiction Load -carring arch is formed on the inside of branch sheath；
Step 6 sets tunnel inverted arch, and inverted arch link block is set between the bottom of the section of jurisdiction Load -carring arch described in step 5, makes pipe
Piece Load -carring arch and inverted arch form a complete section of jurisdiction carrying arcuation ring；
Step 7 repeats step 2 to the constructing operation of step 6, until complete whole tunnel widen and lining cutting, it is whole
The dismounting traffic shield after the completion of widening lining cutting in tunnel.
2. the construction method according to claim 1 for widening traffic tunnel and uninterrupted traffic, it is characterised in that：Step 1
Described in traffic shield disposably spread complete strips tunnel, whole tunnel to be done widen with disposably removed after lining cutting it is all
Traffic shield.
3. the construction method according to claim 1 for widening traffic tunnel and uninterrupted traffic, it is characterised in that：Step 1
Described in traffic shield be pin-connected panel prefabricated shield.
4. the construction method according to claim 3 for widening traffic tunnel and uninterrupted traffic, it is characterised in that：The spelling
The prefabricated shield of dress formula is the prefabricated component of steel machine-shaping or is the prefabricated component that armored concrete makes.
5. the construction method according to claim 1 for widening traffic tunnel and uninterrupted traffic, it is characterised in that：Carry out
After step 2, before step 3, glass fibre bolt anchorage construction is carried out to excavation face.
6. widening the construction method of traffic tunnel and uninterrupted traffic according to claim 1-5 any one of them, feature exists
In：After step 2 is carried out, before step 3, pre-grouting strengthening construction is carried out to excavation face.
7. the construction method according to claim 6 for widening traffic tunnel and uninterrupted traffic, it is characterised in that：Step 6
Described in inverted arch link block mutually splice with former tunnel inverted arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268427.XA CN108131144A (en) | 2017-12-05 | 2017-12-05 | A kind of construction method for widening traffic tunnel and uninterrupted traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268427.XA CN108131144A (en) | 2017-12-05 | 2017-12-05 | A kind of construction method for widening traffic tunnel and uninterrupted traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108131144A true CN108131144A (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268427.XA Pending CN108131144A (en) | 2017-12-05 | 2017-12-05 | A kind of construction method for widening traffic tunnel and uninterrupted traffic |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594993A (en) * | 2019-01-23 | 2019-04-09 | 四川交通职业技术学院 | A kind of tunnel enlarging construction method in the case of uninterrupted traffic |
| CN110675725A (en) * | 2019-09-11 | 2020-01-10 | 山东大学 | Lining construction device and method in segmental excavation model test of multi-arch tunnel |
| CN113279295A (en) * | 2021-05-13 | 2021-08-20 | 中铁五局集团成都工程有限责任公司 | Construction traffic fluffing method for narrow urban road station in famous-region tourist area |
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| CN102852525A (en) * | 2012-09-29 | 2013-01-02 | 中铁二局股份有限公司 | Underground tunnel enlarging and excavating method from small section of single-line tunnel to large section of double-line tunnel |
| CN103114856A (en) * | 2013-03-05 | 2013-05-22 | 福州市规划设计研究院 | Construction method for in-situ broadening and remolding of existing double-arched tunnel |
| CN103470285A (en) * | 2013-09-27 | 2013-12-25 | 福州大学 | Construction device for in-situ maintenance or extension of highway tunnel |
| CN104329095A (en) * | 2014-09-03 | 2015-02-04 | 福州市规划设计研究院 | Construction method for widening existing tunnel |
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2017
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| CN102852525A (en) * | 2012-09-29 | 2013-01-02 | 中铁二局股份有限公司 | Underground tunnel enlarging and excavating method from small section of single-line tunnel to large section of double-line tunnel |
| CN103114856A (en) * | 2013-03-05 | 2013-05-22 | 福州市规划设计研究院 | Construction method for in-situ broadening and remolding of existing double-arched tunnel |
| CN103470285A (en) * | 2013-09-27 | 2013-12-25 | 福州大学 | Construction device for in-situ maintenance or extension of highway tunnel |
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| P LUNARDI等: "A new construction method for widening highway and railway tunnels", 《CONGRESSO INTERNAZIONALE SU》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594993A (en) * | 2019-01-23 | 2019-04-09 | 四川交通职业技术学院 | A kind of tunnel enlarging construction method in the case of uninterrupted traffic |
| CN110675725A (en) * | 2019-09-11 | 2020-01-10 | 山东大学 | Lining construction device and method in segmental excavation model test of multi-arch tunnel |
| CN113279295A (en) * | 2021-05-13 | 2021-08-20 | 中铁五局集团成都工程有限责任公司 | Construction traffic fluffing method for narrow urban road station in famous-region tourist area |
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Application publication date: 20180608 |