CN106437760A - Large-section tunnel novel multi-layer lining structure - Google Patents

Large-section tunnel novel multi-layer lining structure Download PDF

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Publication number
CN106437760A
CN106437760A CN201610573181.6A CN201610573181A CN106437760A CN 106437760 A CN106437760 A CN 106437760A CN 201610573181 A CN201610573181 A CN 201610573181A CN 106437760 A CN106437760 A CN 106437760A
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CN
China
Prior art keywords
arch
lining
layer
tunnel
supporting
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Pending
Application number
CN201610573181.6A
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Chinese (zh)
Inventor
高杨
卿伟宸
朱勇
林本涛
郑伟
陶伟明
杨昌宇
游旭
李敬
要美芬
刘鹏
于茂春
郑杰元
舒俊良
张慧玲
吴华
巩江峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Eryuan Engineering Group Co Ltd CREEC
Original Assignee
China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway Eryuan Engineering Group Co Ltd CREEC filed Critical China Railway Eryuan Engineering Group Co Ltd CREEC
Priority to CN201610573181.6A priority Critical patent/CN106437760A/en
Publication of CN106437760A publication Critical patent/CN106437760A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating

Abstract

The invention discloses a large-section tunnel novel multi-layer lining structure which is capable of effectively controlling tunnel clearance deformation and ground surface settlement, reducing construction risks in the supporting and protecting system conversion process and achieving safe and rapid construction of large-section tunnels under harsh geological environment conditions. The large-section tunnel novel multi-layer lining structure comprises a pre-reinforcement supporting and protecting structure and a primary supporting and protecting structure which are arranged from inside to outside. A secondary supporting and protecting structure is arranged outside the primary supporting and protecting structure. A tertiary supporting and protecting structure is arranged outside the secondary supporting and protecting structure. A waterproof layer is laid between the secondary supporting and protecting structure and the tertiary supporting and protecting structure. The primary supporting and protecting structure is a sprayed concrete structure internally provided with steel frames. The secondary supporting and protecting structure is a reinforced concrete structure or a sprayed concrete structure internally provided with steel frames. The tertiary supporting and protecting structure is a concrete structure or a reinforced concrete structure.

Description

Large cross-section tunnel novel multi-layer lining structure
Technical field
The present invention relates to tunnel lining structure, both wear particularly under a kind of weakness unfavorable geology, special geology or shallow embedding Large cross-section tunnel lining structure under the conditions of having structure (building) to build thing.
Background technology
For adapting to the fast development of China's economy and society, alleviate transport capacity anxiety, realize big ability fast transportation, subtract Few environmental pollution, enters railway construction in China high speed development after 21st century, and speed per hour 160km and more than 200km high standard are big Section double track railway is built more and more.Meanwhile, with high standard railway to mountain development, due to by sweep is big, landform The restriction of the many factors such as complex geologic conditions, environmental requirement height, it is extremely difficult that Along Railway part location sets station condition, disconnected greatly Building of face station tunnel also will get more and more.
For large cross-section tunnel, when positioned at Shallow Section, pass through soil layer, rock decay layer or under wear existing structure (building) and build thing, Need in construction strictly to control ground settlement, during construction, can not possibly once excavate cavitation;When positioned at buried section, pass through weakness poorly Plastid, structure development band, crustal stress complex ground, Support Deformation is wayward, also can not possibly once excavate cavitation during construction.
Therefore, for case above, should follow in construction " hierarchical block excavate, pilot tunnel quick closure, gradually form tunnel The principle of the design bodily form ", using branch's excavation methods such as CRD method, two side-wall pilot tunnel, after the completion of tunnel excavation, forms " cross ", " groined type " or even increasingly complex gib system.But it is necessary to remove tunnel first before applying secondary lining Temporary support in road, the dismounting of temporary support will necessarily break the original balance of structural system, and it is outer that gib is undertaken Power can only carry out two times transfer to reaching new poised state by preliminary bracing.In system conversion process, due to interim The unexpected release of support earth pressure, is likely to result in the destruction of preliminary bracing, leads to the entirety in tunnel to collapse, and constructs the most dangerous In the moment, therefore often it is referred to as " Window time " by people.How to ensure the stability of the supporting construction of " Window time ", except Outside single is torn open and is optimized in support distance, also there is no more preferable method.
How to reduce support system transfer process risk it is ensured that construction safety, " will safely and fast pass through " principle, prop System's conversion risk control and " brevity and lucidity " are unified under a kind of support system structure, become the weak unfavorable geology of reply, special Wear existing structure (building) under geology or shallow embedding and build the active demand that large cross-section tunnel under the conditions of thing is built.
Content of the invention
The technical problem to be solved is to provide a kind of large cross-section tunnel novel tunnel lining structure, is controlled with effective Tunnel clearance deformation processed and ground settlement, reduce support system transfer process construction risk, realize in severe geological conditions Lower safe, quickly build large cross-section tunnel.
The technical solution adopted for the present invention to solve the technical problems is as follows:
The large cross-section tunnel novel multi-layer lining structure of the present invention, including the pre-reinforcement supporting construction arranging from inside to outside, Preliminary bracing structure, is characterized in that:Outside described preliminary bracing structure, secondary supporting structure is set, outside secondary supporting structure, arranges three Secondary liner structure, lays waterproof layer between secondary supporting structure and three liner structures;Described preliminary bracing structure is set using interior The gunite concrete structure of steelframe, described secondary supporting structure is using reinforced concrete structure or the interior gunite concrete setting steelframe Structure, described three liner structures adopt xoncrete structure or reinforced concrete structure.
The invention has the beneficial effects as follows, before applying secondary supporting, do not remove gib system, constructed in secondary supporting Become after reaching design strength, excise all gibs, then apply waterproof layer, finally pour three lining cutting, with reach waterproof and The effect of safety stock;Efficiently solve the less problem of preliminary bracing rigidity, control and wear existing structure (building) under Shallow Section and build The deformation of thing tunnel clearance and ground settlement, reduce deep tunnel and pass through at the beginning of weak rich water, structure development, crustal stress disorder location Prop up the risk that deformation greatly, easily occurs to cave in;Evade " Window time " in traditional lining construction, greatly reduce support system Transfer process construction risk is it is ensured that construction safety.
Brief description
This specification includes following seven width accompanying drawings:
Fig. 1 is the section structure schematic diagram of large cross-section tunnel novel multi-layer lining structure embodiment one of the present invention;
Fig. 2 is the enlarged drawing of A local in Fig. 1;
Fig. 3 is the enlarged drawing of B local in Fig. 1;
Fig. 4 is the section structure schematic diagram that large cross-section tunnel novel multi-layer lining structure of the present invention makes embodiment two;
Fig. 5 is the enlarged drawing of C local in Fig. 2;
Fig. 6 is the Construction State schematic diagram of embodiment 1;
Fig. 7 is the Construction State schematic diagram of embodiment 2;
Preliminary bracing arch wall section 10, arch wall shotcrete layer 10a, arch wall steelframe 10b, arch wall system anchor bolt 10c, lock pin Anchor pole 10d;Inverted arch of primary support section 11, inverted arch shotcrete layer 11a, inverted arch steelframe 11b;Secondary supporting arch wall section 20, two Secondary supporting inverted arch section 21;Three lining cutting arch wall sections 30, three lining cutting inverted arch sections 31;Arch pre-reinforcement supporting construction 40, abutment wall is pre- Its support reinforcement structure 41, inverted arch pre-reinforcement supporting construction 42, waterproof layer 50.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Reference Fig. 1 and Fig. 2, the large cross-section tunnel novel multi-layer lining structure of the present invention, pre- including arrange from inside to outside Its support reinforcement structure, preliminary bracing structure.Secondary supporting structure, secondary supporting structure peripheral hardware are set outside described preliminary bracing structure Put three liner structures, between secondary supporting structure and three liner structures, lay waterproof layer.Described preliminary bracing structure adopts Inside set the gunite concrete structure of steelframe, described secondary supporting structure is mixed using reinforced concrete structure or the interior injection setting steelframe Xtah Crude Clay structure, described three liner structures adopt xoncrete structure or reinforced concrete structure.After the completion of excavating, apply two Gib system is not removed, after secondary supporting structure construction completes to reach design strength, excision is interim before secondary supporting construction Support system, then lays waterproof layer, finally pours three liner structures.
See figures.1.and.2, according to different geological conditions, described pre-reinforcement supporting construction includes arch pre-reinforcement supporting At least one structure in structure 40, abutment wall pre-reinforcement supporting construction 41 and inverted arch pre-reinforcement supporting construction 42, by advanced levels Rotary jet strengthening body, surface grouting surrounding rock consolidation body, advanced curtain-grouting reinforcing body or Shed-pipe Advanced Support grouting support are independent or compound Constitute.
See figures.1.and.2, according to different geological conditions, described pre-reinforcement supporting construction includes arch pre-reinforcement supporting Structure 40, or include arch pre-reinforcement supporting construction 40 and abutment wall pre-reinforcement supporting construction 41, or include arch pre-reinforcement Supporting construction 40, abutment wall pre-reinforcement supporting construction 41 and inverted arch pre-reinforcement supporting construction 42, described pre-reinforcement supporting construction is by surpassing Front tube shed grouting supporting, advanced levels rotary jet strengthening body, surface grouting surrounding rock consolidation body or advanced curtain-grouting reinforcing body are independent Or it is combined composition.
With reference to Fig. 1, Fig. 3 and Fig. 4, described inverted arch of primary support section 11 includes covering the inverted arch gunite concrete of inverted arch country rock Layer 11a and along tunnel excavation direction be spaced lay and be embedded in the inverted arch steelframe 11b in inverted arch shotcrete layer 11a.Inverted arch Bar-mat reinforcement is added in shotcrete layer 11a.
See figures.1.and.2, described secondary supporting structure includes secondary supporting arch wall section 20 and secondary supporting inverted arch section 21, Secondary supporting arch wall section 20 and inverted arch section 21 are using reinforced concrete structure or the interior gunite concrete structure setting steelframe.Described three Secondary liner structure includes three lining cutting arch wall sections 30, or includes three lining cutting arch wall sections 30 and three lining cutting inverted arch sections 31, and three Secondary 30, three lining cutting inverted arch sections 31 of lining cutting arch wall section adopt concrete or reinforced concrete structure.
Embodiment 1
Reconstructed railway expensive (positive) elder brother's (bright) line six Pan Shui is to Zhanyi County Duan Sanlian tunnel.
This three tunnels total length 12214m, at import DK300+419.12 under wear existing operation in elder brother's circuit base segment, buried depth About 3.7m, and artificial earth fill is passed through on this section of hole top.DK300+387~+445 section section lining structure is as shown in figure 1, concrete supporting is joined Number is as follows:
1st, this section adopts two side-wall pilot tunnel to construct, and after the completion of excavation, forms " groined type " support system as shown in Figure 6, Before applying secondary supporting, do not remove gib in hole, after secondary supporting applies and completes to reach design strength, remove " well word Shape " gib, then apply three lining cutting.
2nd, arch pre-reinforcement supporting construction 40 adoptsSteel tube shed, wall thickness is 5.5mm.0 ° of Guan Peng inclination angle, using leading To system positioning.Set of tunneling construction can be carried out after the completion of daguanpeng construction.
3rd, arch wall preliminary bracing structure 10 adopts C25 spray concrete to form shotcrete layer 10a, and thickness is 25cm, sets in it PutBar-mat reinforcement, mesh spacing 20cm × 20cm, longitudinally spaced setting I20b profile steel frame 10b strengthening supporting, spacing 0.6m mono- Pin, circumferentially spaced-apart setting between adjacent two Pin steelframesLongitudinally connected reinforcing bar, circumferential distance 1.0m.Abutment wall pin sets PutLock pin anchor tube 10d, long 5m.Arch wall system anchor bolt adoptsDuctule, long 3.5m, spacing 1.0m.
4th, inverted arch preliminary bracing structure 11 adopts C25 spray concrete to form shotcrete layer 11a, and thickness is 25cm, sets in it PutBar-mat reinforcement, mesh spacing 20cm × 20cm, longitudinally spaced setting I20b profile steel frame 11b strengthening supporting, spacing 0.6m mono- Pin, circumferentially spaced-apart setting between adjacent two Pin steelframesLongitudinally connected reinforcing bar, circumferential distance 1.0m.
5th, secondary supporting arch wall section 20 and inverted arch section 21 are using using C30 armored concrete.The thick 40cm of arch wall section 20, inverted arch The thick 80cm of section 21.
6th, three lining cutting only arrange arch wall section, using C30 armored concrete, thick 40cm.
Using the supporting construction of the present invention, in construction, the deformation of effective control tunnel clearance and ground settlement, effectively control Make support system transfer process construction risk, both ensure that construction safety, in turn ensure that both wired operation security.
Embodiment 2
Special line for passenger trains Liangshan, Xiamen to Shenzhen tunnel.
Liangshan tunnel total length 9888m, a rich water buried weakness structural belt (L7) is developed in this tunnel DK96+495~535 section, wide Degree about 25m, about 75 ° of inclination angle, filling material is grittiness, stickiness soil body alternating layers, buried depth 270m, and weathering is to earth's surface, and this tunnel is adopted On the left of when being constructed with conventional method, roundabout base tunnel fails to pass through, and there occurs large-scale water bursting factor and surface subsidence, leads Construction is caused to be absorbed in pause.After the liner structure of the present invention, according to the country rock carrying out in work progress and structural deformation monitoring Display, situations such as do not find malformation, application solutions tunnel passes through the insertion on this stratum.This section of lining structure such as Fig. 2 institute Show, concrete supporting parameter is as follows:
1st, this section, using tearing the construction of formula engineering method behind right-angled intersection next door open, after the completion of excavation, is formed as shown in Figure 7 " cross " Support system, after secondary supporting applies and completes to reach design strength, removes " cross " gib in hole, then applies three times Lining cutting.
2nd, adopt the advanced pre-reinforcement of loopful horizontal jet grouting, i.e. arch pre-reinforcement supporting construction 40, abutment wall pre-reinforcement supporting knot Structure 41 and inverted arch pre-reinforcement supporting construction 42, all using horizontal rotary jet strengthening, adoptDrill bit creeps into, initial perforate angle Degree 1%.
3rd, arch wall preliminary bracing structure 10 adopts C25 corrosion resistant fiber spray concrete to form shotcrete layer 10a, and thickness is 35cm, setting in itBar-mat reinforcement, mesh spacing 20cm × 20cm, longitudinally spaced setting I25a profile steel frame 10b is strengthened Supporting, spacing 0.5m mono- Pin, circumferentially spaced-apart setting between adjacent two Pin steelframesLongitudinally connected reinforcing bar, circumferential distance 1.0m.Arch springing pin is arrangedLock pin anchor tube 10d, long 5m.Arch wall system anchor bolt adoptsDuctule, long 5m, Away from 1.0m.
4th, inverted arch preliminary bracing structure 11 adopts C25 corrosion resistant fiber spray concrete to form shotcrete layer 11a, and thickness is 35cm, setting in itBar-mat reinforcement, mesh spacing 20cm × 20cm, longitudinally spaced setting I25a profile steel frame 11b is strengthened Supporting, spacing 0.5m mono- Pin, circumferentially spaced-apart setting between adjacent two Pin steelframesLongitudinally connected reinforcing bar, circumferential distance 1.0m.
5th, secondary supporting arch wall section 20 and inverted arch section 21 are using using C35 corrosion resisting steel reinforced concrete, thick 80cm.
6th, three lining cutting arch wall sections 30 and inverted arch section 31, all using C30 corrosion resisting steel reinforced concrete, thick 50cm.
Some principles of the above large cross-section tunnel novel multi-layer lining structure of the present invention that simply explains through diagrams, not Be intended to by the present invention be confined to shown in and described concrete structure and the scope of application in, therefore every be possible to be utilized corresponding Modification and equivalent, belong to the apllied the scope of the claims of the present invention.

Claims (8)

1. large cross-section tunnel novel multi-layer lining structure, including the pre-reinforcement supporting construction arranging from inside to outside, preliminary bracing knot Structure and secondary liner structure, is characterized in that:Described secondary liner structure lays waterproof layer, arranges three lining cutting knot outside waterproof layer Structure.
2. large cross-section tunnel novel multi-layer lining structure as claimed in claim 1, is characterized in that:Described pre-reinforcement supporting construction Including in arch pre-reinforcement supporting construction (40), abutment wall pre-reinforcement supporting construction (41) and inverted arch pre-reinforcement supporting construction (42) At least one structure, by advanced levels rotary jet strengthening body, surface grouting surrounding rock consolidation body, advanced curtain-grouting reinforcing body or advanced Tube shed grouting supporting individually or is combined composition.
3. large cross-section tunnel novel multi-layer lining structure as claimed in claim 1, is characterized in that:Described preliminary bracing structure It is made up of preliminary bracing arch wall section (10), inverted arch of primary support section (11), preliminary bracing arch wall section (10) includes covering arch wall and encloses The arch wall shotcrete layer (10a) of rock and along tunnel excavation direction be spaced lay and be embedded in arch wall shotcrete layer (10a) the arch wall steelframe (10b) in, and the arch wall system anchor bolt (10c) along arch wall quincuncial arrangement.
4. large cross-section tunnel novel multi-layer lining structure as claimed in claim 3, is characterized in that:Described arch wall gunite concrete Bar-mat reinforcement is added in layer (10a).
5. large cross-section tunnel novel multi-layer lining structure as claimed in claim 3, is characterized in that:Described inverted arch of primary support section (11) include covering the inverted arch shotcrete layer (11a) of inverted arch country rock and be spaced along tunnel excavation direction and lay and be embedded in and face upward Inverted arch steelframe (11b) in arch shotcrete layer (11a).
6. large cross-section tunnel novel multi-layer lining structure as claimed in claim 5, is characterized in that:Described inverted arch gunite concrete Bar-mat reinforcement is added in layer (11a).
7. large cross-section tunnel novel multi-layer lining structure as claimed in claim 1, is characterized in that:Described secondary liner structure bag Include secondary lining arch wall section (20) and secondary lining inverted arch section (21), secondary lining arch wall section (20) and inverted arch section (21) adopt steel Tendon concrete structure or the interior gunite concrete structure setting steelframe.
8. large cross-section tunnel new-type tunnel lining construction as claimed in claim 1, is characterized in that:Three times described liner structures include Three lining cutting arch wall section (30), or include three lining cutting arch wall section (30) and three lining cutting inverted arch section (31), three lining arches Wall section (30), three lining cutting inverted arch section (31) adopt reinforced concrete structure.
CN201610573181.6A 2016-07-20 2016-07-20 Large-section tunnel novel multi-layer lining structure Pending CN106437760A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107178379A (en) * 2017-07-19 2017-09-19 北京军秀咨询有限公司 A kind of tunnel support structure
CN108361049A (en) * 2018-01-31 2018-08-03 中铁二十局集团轨道交通工程有限公司 A kind of tunnel waterproofing construction construction method
CN108952783A (en) * 2018-08-01 2018-12-07 中铁十九局集团第六工程有限公司 A kind of dual supporting pre-embedded construction method in 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
CN111236983A (en) * 2018-11-29 2020-06-05 中国石油天然气集团有限公司 Tunnel primary support method

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JP2013002141A (en) * 2011-06-16 2013-01-07 Shimizu Corp Structure of lining wall of large-section tunnel
CN103195455A (en) * 2013-03-11 2013-07-10 中铁二院工程集团有限责任公司 Large section tunnel construction support and protection system and construction method under flabby geological environment
CN203296780U (en) * 2013-06-07 2013-11-20 西南交通大学 Supporting and protecting lining device used for preventing surrounding rock from large deformation in underground cavern construction
CN203867589U (en) * 2014-06-11 2014-10-08 长安大学 Karst tunnel supporting structure
CN105443132A (en) * 2015-12-02 2016-03-30 中国建筑第五工程局有限公司 Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel
CN205936642U (en) * 2016-07-20 2017-02-08 中铁二院工程集团有限责任公司 Big novel multilayer lining cutting of section tunnel structure

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Publication number Priority date Publication date Assignee Title
CN102155240A (en) * 2011-04-29 2011-08-17 中铁第四勘察设计院集团有限公司 Shield tunnel lining structure by adopting non-closed secondary lining
JP2013002141A (en) * 2011-06-16 2013-01-07 Shimizu Corp Structure of lining wall of large-section tunnel
CN103195455A (en) * 2013-03-11 2013-07-10 中铁二院工程集团有限责任公司 Large section tunnel construction support and protection system and construction method under flabby geological environment
CN203296780U (en) * 2013-06-07 2013-11-20 西南交通大学 Supporting and protecting lining device used for preventing surrounding rock from large deformation in underground cavern construction
CN203867589U (en) * 2014-06-11 2014-10-08 长安大学 Karst tunnel supporting structure
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CN205936642U (en) * 2016-07-20 2017-02-08 中铁二院工程集团有限责任公司 Big novel multilayer lining cutting of section tunnel structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107178379A (en) * 2017-07-19 2017-09-19 北京军秀咨询有限公司 A kind of tunnel support structure
CN107178379B (en) * 2017-07-19 2019-10-15 中庆建设有限责任公司 A kind of tunnel support structure
CN108361049A (en) * 2018-01-31 2018-08-03 中铁二十局集团轨道交通工程有限公司 A kind of tunnel waterproofing construction construction method
CN108952783A (en) * 2018-08-01 2018-12-07 中铁十九局集团第六工程有限公司 A kind of dual supporting pre-embedded construction method in tunnel
CN111236983A (en) * 2018-11-29 2020-06-05 中国石油天然气集团有限公司 Tunnel primary support method
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
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

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Application publication date: 20170222