CN106014456A - Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof - Google Patents
Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof Download PDFInfo
- Publication number
- CN106014456A CN106014456A CN201610585497.7A CN201610585497A CN106014456A CN 106014456 A CN106014456 A CN 106014456A CN 201610585497 A CN201610585497 A CN 201610585497A CN 106014456 A CN106014456 A CN 106014456A
- Authority
- CN
- China
- Prior art keywords
- lining cutting
- lining
- double
- section
- mining method
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000005065 mining Methods 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 133
- 239000010959 steel Substances 0.000 claims description 133
- 238000005520 cutting process Methods 0.000 claims description 65
- 230000005641 tunneling Effects 0.000 claims description 47
- 239000004567 concrete Substances 0.000 claims description 34
- 210000003205 muscle Anatomy 0.000 claims description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- 230000007547 defect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000011378 shotcrete Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 2
- 229910000746 Structural steel Inorganic materials 0.000 abstract 2
- 238000009412 basement excavation Methods 0.000 description 11
- 238000004062 sedimentation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 210000000003 hoof Anatomy 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000013632 homeostatic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- -1 model: work 22a Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a double-layer lining special quasi-circular sectional mining method tunnel structure and a construction method thereof, and aims to achieve a double-layer lining structure of a quasi-circular section as well as a secondary lining and a third lining, meet the requirements of procedures of dismounting temporary internal structural steel support after the secondary lining meets strength requirements, ensure controllable deformation and ambient environment safety in the tunnel construction process, and achieve a mining tunnel structure of special requirements. According to the technical scheme, a conventional tunnel section is optimized to be a quasi-circular section, meanwhile a conventional lining structure is of a composite structure of a secondary lining and a third lining, and moreover, the temporary internal structural steel support is dismounted after the secondary lining meets strength requirements, so that the double-layer lining special quasi-circular sectional mining method tunnel structure has the advantages that the outline of the section is smooth, the stress is reasonable, the section is flexibly arranged, the internal space adjusting amplitude is large, and the support structure system is reliably stressed.
Description
Technical field
The invention belongs to tunnel construction technical field, be specifically related to a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method knot
Structure and construction method thereof.
Background technology
For the railway traffic engineering of current cities in China, along with the continuous encryption of subway gauze, when follow-up subway line is built,
Affected with surrounding enviroment by built subway line, in line alignment and paving mode, spatial relationship and structural shape and construction
Method is stricter with the requirement of the aspects such as engineering measure.The conventional shape of a hoof or stalk arch Tunneling by mining method structural shape may be subject to
Periphery existing buildings limits does not has a required space that performs, and conventional Tunneling by mining method lining cutting perform before interim type steel support remove,
Stress system changes the sedimentation caused and cannot be effectively controlled with deformation, and similar round Tunneling by mining method section structure has excavation wheel
Wide relatively small feature, construction method has flexible and changeable, strong adaptability, a feature such as safe and reliable, special secondary lining+
The double linings pattern of three lining cutting and secondary lining remove the operation of internal interim type steel support again after reaching requirement of strength
Requirement, it is ensured that the monolithic stability of tunnel structure and safety of surrounding environment.
Summary of the invention
In order to solve the problems of the prior art, the present invention propose a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure and
Its construction method, by similar round section and secondary lining, the double-deck lining structure of three lining cutting, and secondary lining reaches intensity
The procedure calls of internal interim type steel support is removed again, it is ensured that during constructing tunnel, deform controlled and surrounding enviroment peace after requirement
Entirely, it is achieved that the Tunneling by mining method structural shape under particular/special requirement.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure, the preliminary bracing set gradually including ecto-entad, secondary
Lining cutting and three lining cutting, the overall structure that described preliminary bracing, secondary lining and three lining cutting are constituted, its profiled outline is by upper and lower
The circular arc composition that two sections of radius of curvature are different, is connected by straightway transition between two sections of circular arcs, and described preliminary bracing includes along tunnel
The grid steel frame being arranged circumferentially and gunite concrete, grid steel frame includes that the main muscle of reinforcing bar and waling, the main muscle of reinforcing bar add with longitudinal
Strong muscle is welded to each other that fixing the inside of secondary lining is provided with interim type steel support in grid-like, type steel support to grid steel frame corresponding
Position is fixing to be connected, and described secondary lining and three lining cutting use water-proof concrete to pour, and spread between secondary lining and three lining cutting
It is provided with tunneling boring waterproof material, forms typical composite structure.
Described every ring grid steel frame includes four main muscle of curved reinforcing bar, is distributed in the shape of a spiral if being fixed with between four main muscle of reinforcing bar
Dry waling.
Described type steel support includes that two sections of arc I-steel, one section of I-steel are fixed with preliminary bracing vault and the arch end and are connected, another section
I-steel is fixing with preliminary bracing haunch to be connected.
Described two sections of I-steel muscle (7) main with the reinforcing bar of relevant position is fixing to be connected, main by two pieces of steel plates with holes (6) and spiral shell
Bolt realizes.
The structure section profile that described preliminary bracing, secondary lining and three lining cutting are constituted is made up of upper and lower two sections of circular arcs, two sections of circles
Arc radius of curvature is different.
The construction method of a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure, comprises the following steps:
1) interfix curved grid-like grid steel frame by main for reinforcing bar muscle and waling, timely frame during tunneling
If grid steel frame；
2) at the timely gunite concrete in grid steel frame surface, it is ensured that preliminary bracing is closely connected with tunnel surrounding；
3) setting up inner bracing members, type steel support was connected with fixing at haunch with grid steel arch top, the arch end, formed entirety
Support body system；
4), inside supporting in the early stage, use little template to pour water-proof concrete and form secondary lining；
5) after secondary lining reaches intensity, remove type steel support, lay tunneling boring waterproof material, and according to first encircleing vault behind the end
Order pours water-proof concrete, and the section of the arch end and vault all pours in arc-shaped, and the circular arc of the arch end and vault is by straightway mistake
Degree connects, and forms three lining cutting, i.e. forms double-deck lining cutting similar round special cross section Tunneling by mining method structure.
Described step 1) in the main muscle of reinforcing bar and waling use three grades of Ribbed Bar.
Described step 2) on grid steel frame the concrete of injection be C25 concrete.
Described step 3) Shaped Steel supports that to use material be the 22a type I-steel of Q235.
Described secondary lining and three lining cutting use C35 water-proof concrete, and described waterproof material uses EVA drainage systems.
Compared with prior art, the structure of the present invention has special similar round cross-sectional configuration pattern, and proposes a kind of secondary lining
The novel double-layer lining cutting Tunneling by mining method structure of+three lining cutting, enriches existing tunnel method for designing and construction technology, has widened tunnel
Road mentality of designing.By conventional tunnel cross-section pattern is optimized for similar round section, conventional liner structure is divided into secondary simultaneously
+ three lining cutting of lining cutting, and after secondary lining reaches design strength, remove internal interim type steel support again so that double-deck lining cutting is special
Similar round section Tunneling by mining method structure has that profiled outline line style is smoother, reasonable stress, section flexible arrangement and inner space adjust
Amplitude is big, the reliable advantage of supporting structure system stress, is not only able to avoid the conventional shape of a hoof or stalk arch Tunneling by mining method excavation
Profile is relatively large but shortcoming that stress performance is relatively poor, and before conventional Tunneling by mining method lining cutting can be overcome to pour, inside is faced
Time supporting removal, the stress system Vault settlement that causes of conversion or deformation, make tunnel from excavate to the whole process finally completed, the beginning
Being in eventually under reliable support system effect, the most perfect tunnel stress system is changed the mechanism, to maintaining tunnel homeostasis
With safety of surrounding environment, there is significant impetus, under the background that environmental benefit more highlights, have higher economic benefit and
Social benefit, has wide practical use in the engineerings such as urban track traffic, railway, highway.
Further, the main muscle of reinforcing bar and the spiral some walings that use four arcs constitute grid steel frame, wet shot coagulation
After soil, the overall bending rigidity of grid steel frame can improve 8 times, is effectively increased the bearing capacity of preliminary bracing, further increases
The load-carrying properties of present configuration.
Further, when secondary lining pours, inner bracing members is not yet removed, and removes after secondary lining reaches design strength again
Type steel support, make tunnel from excavate to finally complete whole during, be in all the time under reliable support system effect, from all
The most perfect upper tunnel stress system is changed the mechanism, to maintaining tunnel homeostasis and safety of surrounding environment to have significant impetus,
Can effectively ensure that tunnel-liner performs the sedimentation of period controlled with deformation, safety of surrounding environment is controlled.
Further, the tunnel structure of the present invention has the similar round cross-section structure pattern not waiting circle, passes through between upper and lower circular arc
Straightway transition, overall symmetrical, have that profiled outline line style is smoother, reasonable stress, section flexible arrangement and inner space are adjusted
View picture degree is big, the reliable advantage of supporting structure system stress.
Grid steel frame, secondary lining, three lining cutting and the secondary lining arranged in supporting in the early stage in the construction method of the present invention
The interim type steel support of interior setting, the steel related to, water-proof concrete, waterproof material, and a just spray mix and water with secondary lining
Building plant equipment etc. used and be conventional material, equipment, its corresponding size is general type, it is simple to processing and manufacturing；And interim type
The arrangement of bracing members, longitudinal pitch can adjust accordingly according to tunnel excavation operation, can decide whether as required temporarily simultaneously
Type steel support carries out linked network, the mixed sealing treatment of spray.By the double-deck lining structure of similar round section Yu+three lining cutting of secondary lining,
And secondary lining reaches to remove after requirement of strength the procedure calls of internal interim type steel support again, tunnel can be ensured to a certain extent
Work progress deforms controlled and safety of surrounding environment, it is achieved that the Tunneling by mining method structural shape under particular/special requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of tunnel structure of the present invention；
Fig. 2 is the layout schematic diagram of type steel support；
Fig. 3 is the schematic diagram at the link position A of type steel support and grid steel frame；
Fig. 4 is the schematic diagram at the link position A of type steel support and grid steel frame along A-A direction；
Wherein, 1-preliminary bracing, 2-secondary lining, tri-lining cutting of 3-, 4-grid steel frame, 5-type steel support, 6-steel plate with holes, 7-
The main muscle of reinforcing bar, 8-waling, 9-φ 24 hole, 10-straightway.
Detailed description of the invention
Below in conjunction with specific embodiment and Figure of description, the present invention is further explained.
Seeing Fig. 1, the structure of the present invention includes preliminary bracing 1, secondary lining 2 and three lining cutting 3 that ecto-entad sets gradually,
The structure section profile that preliminary bracing 1, secondary lining 2 and three lining cutting 3 are constituted, mainly includes different upper and lower of radius of curvature
Two sections of circular arcs, are connected by straightway 10 transition between two sections of circular arcs, preliminary bracing 1 include circumferentially disposed grid steel frame 4 with
Gunite concrete, grid steel frame 4 includes the main muscle of reinforcing bar 7 and waling 8, and the main muscle of reinforcing bar 7 is the most solid with waling 8
Fixed in grid-like, every ring grid steel frame 4 includes four main muscle of curved reinforcing bar 7, is fixed with helically between four main muscle of reinforcing bar 7
Some walings 8 of shape distribution.Seeing Fig. 2, the inside of secondary lining 2 is provided with interim type steel support 5, type steel support 5
Fixing with grid steel frame 4 and be connected, type steel support 5 includes two sections of arc I-steel, one section of I-steel and preliminary bracing 1 vault and arch
The fixing connection in the end, another section of I-steel is fixed with preliminary bracing 1 haunch and is connected.Seeing Fig. 3 and Fig. 4, two sections of I-steel are with corresponding
The main muscle of reinforcing bar 7 of position is connected, and fixing connection of shaped steel muscle main with reinforcing bar 7 is mainly realized by two blocks of steel plates 6 with holes and bolt.
Secondary lining 2 uses water-proof concrete to pour with three lining cutting 3, is equipped with tunneling boring and prevents between secondary lining 2 and three lining cutting 3
Water material.
The construction method of the present invention, comprises the following steps:
1) interfix curved grid-like grid steel frame 4 by main for reinforcing bar muscle 7 and waling 8, during tunnel excavation
Setting up grid steel frame 4 in time, the main muscle of reinforcing bar 7 and waling 8 use three grades of Ribbed Bar；
2) the wettest C25 concrete of penetrating on grid steel frame 4 surface, forms preliminary bracing 1；
3) internal interim type steel support 5, the 22a type I-steel that type steel support 5 uses material to be Q235, type steel support 5 are set up
Fix with grid steel frame 4 relevant position and be connected, it is achieved integrated support system；
4) supporting in the early stage 1 is internal uses little template to pour C35 water-proof concrete formation secondary lining 2；
5) after secondary lining 2 reaches design strength, remove type steel support 5, lay tunneling boring waterproof material, and according to first encircleing at the end
The order of rear vault pours C35 water-proof concrete, and the section of the arch end and vault all pours in arc-shaped, and encircles the end and the circle of vault
Arc is excessively connected by straightway, forms three lining cutting 3, i.e. forms double-deck lining cutting similar round special cross section Tunneling by mining method structure.
The tunnel structure of the present invention, has the similar round cross-section structure pattern not waiting circular arc, passes through straight line between upper and lower circular arc
Section transition, overall symmetrical, concrete radius of curvature size and practical range, requirement can be used according to structure function with inner space
Determining, the double-deck lining structure pattern of the most special+three lining cutting of secondary lining, secondary lining are removed after reaching design strength again
The procedure calls of inner bracing members, can effectively ensure that tunnel-liner performs the monolithic stability of the stress system of period, and surrounding enviroment are pacified
The most controlled.
Secondary lining 2 all uses C35 water-proof concrete to pour with three lining cutting 3, complete between secondary lining 2 and three lining cutting 3
Section lays waterproof material, and secondary lining 2 is internal simultaneously is provided with interim type steel support 5, and secondary lining 2 is outside is provided with preliminary bracing
1, do not do waterproof requirement between preliminary bracing and secondary lining.Preliminary bracing is mainly by the main muscle of reinforcing bar 7 with waling 8 on request
Welding, colligation become grid steel frame 4, and gunite concrete is formed the most on request, type steel support 5 and the connection of grid steel frame 4,
Mainly being realized by two blocks of steel plates 6 with holes, steel plate 6 bore size with holes is φ 24 hole 9.Grid steel frame 4 uses grade III steel,
Type steel support 5 and steel plate 6 with holes all use Q235 steel, and gunite concrete 8 uses C25 early strength concrete, and waterproof material is adopted
Use EVA drainage systems.Grid steel frame 4 and the general desirable 0.5m of type steel support 5 longitudinal pitch, with tunnel longitudinally excavation step pitch
Identical.
Tunnel structure of the present invention is mainly constructed and the double-deck lining structure of+three lining cutting of secondary lining by upper and lower radius unequal circular arc
Pattern, meets structure function under specific environment and uses requirement with inner space, construction specifically include following steps:
Step one: according to Tunneling by mining method construction requirement, arranges a number of dewatering well and water level observation hole, fall in both sides, tunnel
The spacing of well can make the appropriate adjustments according to stratum permeability by considering along about tunnel longitudinal direction 15m, and both sides, tunnel are respectively arranged one
Row, carries out dewatering construction, it is ensured that level of ground water is about 1m below tunnel structure base plate, needs strictly to control sand production rate in precipitation, control
The Stratum Loss that precipitation processed causes；
Step 2: control to control requirement with surrounding enviroment according to structure sedimentation, carry out the stratum pre-reinforcement before tunnel excavation and process；
Step 3: according to design requirement, by main for reinforcing bar muscle 7 with waling 8 by certain radian requirement bending machining, then pass through
Welding, colligation form grid steel frame 4, and based on grade III steel, locally colligation uses two grades of steel, and reinforcement welding uses the weldering of E50 series
Bar；
Step 4: carry out tunnel excavation by engineering method requirement, and set up grid steel frame 4 in time, form preliminary bracing after gunite concrete
1, preliminary bracing 1 should be the most closely connected with country rock, and grid steel frame 4 joint need to firmly weld, and gunite concrete need to carry out wet on request
Spray；
Step 5: after supporting in the early stage 1 is formed, welds on the haunch relevant position main muscle of reinforcing bar 7 at tunnel vault, the arch end on request
Tape splicing hole steel plate 6, and by bolt, two blocks of steel plates 6 with holes are connected into an entirety；
Step 6: by tunnel cross-section pattern and excavation technology, by regulation radian requirement processing type bracing members 5, the arc of type steel support 5
Degree with tunnel cross-section pattern match, and need to set up type steel support 5 according to excavation progress in time, need between type steel support 5 and steel plate 6 into
The reliable welding of row, uses E43 series welding rod；
Step 7: on the premise of not removing type steel support 5, the little template of supporting in the early stage 1 inner utilization carries out secondary lining 2
Pour, use C35 water-proof concrete, little template need to be adjusted according to the position of tunnel internal type steel support 5, at shaped steel
Support 5 and preliminary bracing 1 connecting portion reserving hole；
Step 8: after secondary lining 2 reaches prescribed strength, tunneling boring cuts off type steel support 5, and by cement mortar by secondary lining
The 2 floating process in surface, tunneling boring lays waterproof material subsequently, three lining cutting in tunnel is divided into upper and lower two parts and pours, according to first encircleing
The principle of vault at the end, first pours and divides bottom arch, after-pouring vault part, uses straightway 10 transition, really between lower circle and upper circle
Structure-preserving surface smoothes out, and forms three lining cutting 3, completes the construction of double-deck lining cutting similar round special cross section Tunneling by mining method structure.
In construction:
The main muscle of reinforcing bar 7 and waling 8 all use grade III steel, diameter 25mm, i.e. φ 25, and every ring grid steel frame 4 comprises 4
The main muscle of root reinforcing bar 7 and 25 walings 8.Wet shot C25 concrete after grid steel frame 4 erection, the preliminary bracing 1 of formation
It is ensured that it is closely connected with tunnel surrounding.
Type steel support 5 uses Q235 steel, model: work 22a, and steel plate 6 with holes is also adopted by Q235 steel, and size: 250mm ×
250mm × 10mm, grid steel frame 5 realizes being connected by two blocks of steel plates 6 with holes with type steel support 6, passes through between steel plate 6 with holes
The diameter 22mm bolt penetrated in φ 24 hole is attached, and steel plate 6 size with holes can be big according to concrete load with bore size etc.
Little it is adjusted.
Secondary lining 2 uses C35 water-proof concrete, and period does not remove the internal interim type steel support 5 of preliminary bracing 1, it is impossible to set up
Formwork jumbo, therefore needs to use little template to construct, and little template need to be at type steel support 5 and grid steel frame 4 junction perforate, tool
Body position of opening and bore size can according to grid steel frame 4 model, erection situation is corresponding adjusts.
Three lining cutting 3 use C35 water-proof concrete, remove the interim type steel support 5 within secondary lining 2, need simultaneously before construction
Carrying out after secondary lining 2 reaches the 80% of design strength, secondary lining 2 needs to use the floating process of cement mortar after removing, subsequently
Tunneling boring lays waterproof material, according to principle casting concrete from the bottom up.
To find out theoretically and to adapt to the tunnel structure that arbitrary cross-section pattern requires, can meet structural safety can with surrounding enviroment
Control, also can meet inside configuration space and use requirement, but also need to meet the Tunneling by mining method structural shape of conventional construction technological requirement
And construction method, under the conditions of existing theoretical level with construction technology, still there is sizable difficulty, because Tunneling by mining method knot
Bucket wheel exterior feature must be tried one's best smoother to meet force request, reduces structure sediment and deformation as far as possible, but circular cross section is meeting tunnel internal
All kinds of gauge requesting party masks have obvious inferior position, and Tunneling by mining method is when internal temporary support is removed simultaneously, will necessarily cause stress
The transformation of system and the reassignment of stress, and then be inevitable on the disturbance of surrounding formations to a certain extent with the impact of environment
's.And Tunnel Engineering protection requires in addition to oneself factor, in addition it is also necessary in view of the different requirements of surrounding enviroment, especially closing on
In the case of existing subway station lays special stress on protecting object with tunnel, underground commerce synthesis and hospital, school with laboratory etc.,
Current Tunneling by mining method structure design and construction, still need to according to " manage slip casting advanced, tight, short excavation, strong supporting, early close,
Diligent measuring " basic principle of ten Eight Terms Guidelines carries out.
The present invention " double-deck lining cutting special defects circular cross section Tunneling by mining method structure " refers mainly to up-small and down-big similar round tunnel cross-section pattern,
And the double-deck lining structure pattern of+three lining cutting of secondary lining, there is section flexible arrangement, inner space adjust amplitude big,
Protection structure system stress is reliable and changes feature that is flexible and that adapt to all kinds of environmental requirement.Both the conventional shape of a hoof or stalk had been avoided
Arch Tunneling by mining method outline excavation is relatively large but shortcoming that stress performance is relatively poor, solves again shaped steel under the conditions of common process
Supporting removal stage, sedimentation that flexible grid steel frame causes with preliminary bracing stress redistribution and deformation.Can realize working as city underground
Gauze begins to take shape, urban rail corridor has already taken up below major urban arterial highway in the case of main space, and underground engineering remains to adopt
The purpose implemented with double-deck lining cutting special defects this conventional means of circular cross section Tunneling by mining method, has higher economic benefit and society
Benefit, has wide practical use in the engineerings such as urban track traffic, railway, highway.
The present invention by the most not equivalent section pattern of double-deck lining cutting special defects circular cross section Tunneling by mining method structure, secondary lining+
The special lining structure pattern of three lining cutting, and the carrying effect in advance of secondary lining, not only can meet tunnel contour smoother
With force request, and in can avoiding tunnel, interim type steel support is removed and is become with the Stress Release of stress system transition period and sedimentation thereof
Shape, it is achieved that tunnel cross-section form and the improvement of stress system.
Present disclosure is not limited to cited by embodiment, those of ordinary skill in the art by read description of the invention and to this
The conversion of any equivalence that bright technical scheme is taked, the claim being the present invention is contained.
Claims (10)
1. a double-deck lining cutting special defects circular cross section Tunneling by mining method structure, it is characterised in that include along tunnel radial direction by
Preliminary bracing (1), secondary lining (2) and three lining cutting (3), described preliminary bracing (1), the secondary set gradually outside to inside
The section of the tunnel structure that lining cutting (2) and three lining cutting (3) are constituted includes upper and lower two sections of circular arcs, by straight between two sections of circular arcs
Line segment transition connects, and described preliminary bracing (1) includes circumferentially disposed grid steel frame (4) and gunite concrete, grid steel frame (4)
Including the main muscle of reinforcing bar (7) and waling (8), the main muscle of reinforcing bar (7) interfixes in grid-like with waling (8),
The inside of secondary lining (2) is provided with type steel support (5), and type steel support (5) is fixing with grid steel frame (4) to be connected, and described two
Secondary lining cutting (2) uses water-proof concrete to pour with three lining cutting (3), lays between secondary lining (2) and three lining cutting (3)
There is tunneling boring waterproof material.
2. want a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure described in 1 according to right, it is characterised in that institute
State every ring grid steel frame (4) and include the four main muscle of curved reinforcing bars (7), be fixed with in the shape of a spiral between the four main muscle of reinforcing bars (7)
Some walings (8) of distribution.
A kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 2, it is characterised in that
Described type steel support (5) includes that two arc I-steel, an I-steel are fixed be connected with vault and the arch end of preliminary bracing (1),
Another root I-steel is fixing with the haunch of preliminary bracing (1) to be connected.
A kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 3, it is characterised in that
Described two I-steel muscle (7) main with the reinforcing bar of relevant position is connected by two pieces of steel plates with holes (6) and bolt are fixing.
A kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 1, it is characterised in that
Upper and lower two sections of the integrally-built profiled outline that described preliminary bracing (1), secondary lining (2) and three lining cutting (3) are constituted
The radius of curvature of circular arc is different.
6. the construction method of a double-deck lining cutting special defects circular cross section Tunneling by mining method structure, it is characterised in that include following step
Rapid:
1) interfix curved grid-like grid steel frame (4) by main for reinforcing bar muscle (7) and waling (8), and is opening
Grid steel frame (4) is set up in time when holing；
2) at the timely wet shotcreting in grid steel frame (4) surface, and formation preliminary bracing (1) closely connected with tunnel surrounding；
3) set up at the type steel support (5) of arc, type steel support (5) and the vault of grid steel frame (4), the arch end and haunch solid
Fixed connection, forms integrated support system with preliminary bracing (1)；
4) supporting in the early stage (1) is internal uses little template to pour water-proof concrete formation secondary lining (2)；
5) after secondary lining (2) reaches hardening strength, type steel support (5) is removed, at tunneling boring laying waterproof material, and according to
, the order of vault pours water-proof concrete at first the arch end, and the section of the arch end and vault all pours in arc-shaped, and logical between the arch end and vault
Cross straightway excessive, form three lining cutting (3), i.e. form double-deck lining cutting similar round special cross section Tunneling by mining method structure.
The construction method of a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 6, its
Be characterised by, described step 1) in the main muscle of reinforcing bar (7) and waling (8) use three grades of Ribbed Bar.
The construction method of a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 6, its
Be characterised by, described step 2) in the concrete of the upper injection of grid steel frame (4) be C25 concrete.
The construction method of a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 6, its
It being characterised by, described step 3) Shaped Steel supports (5) and uses material to be the 22a type I-steel of Q235.
The construction method of a kind of double-deck lining cutting special defects circular cross section Tunneling by mining method structure the most according to claim 6, its
Being characterised by, described secondary lining (2) uses C35 water-proof concrete with three lining cutting (3), and waterproof material is EVA plastics
Splash guard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610585497.7A CN106014456A (en) | 2016-07-22 | 2016-07-22 | Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610585497.7A CN106014456A (en) | 2016-07-22 | 2016-07-22 | Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106014456A true CN106014456A (en) | 2016-10-12 |
Family
ID=57116353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610585497.7A Pending CN106014456A (en) | 2016-07-22 | 2016-07-22 | Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014456A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761851A (en) * | 2017-01-10 | 2017-05-31 | 西南交通大学 | A kind of tunnel water proofing subregion construction and its implementation using spraying waterproof technique |
| CN107023308A (en) * | 2017-05-27 | 2017-08-08 | 中国水利水电第四工程局有限公司 | A kind of hard rock large cross-section tunnel construction supporting structure and construction method |
| CN107701203A (en) * | 2017-10-18 | 2018-02-16 | 中铁第勘察设计院集团有限公司 | Pile foundation underpinning system and its construction method based on double-deck permanent lining, secondary lining structure |
| CN108180025A (en) * | 2018-01-31 | 2018-06-19 | 中铁二十局集团轨道交通工程有限公司 | A kind of circular cross section tunnel lining construction method three times |
| CN108301843A (en) * | 2018-03-02 | 2018-07-20 | 北京交通大学 | Underwater shield tunnel shock resisting composite lining structure |
| CN108716404A (en) * | 2018-05-17 | 2018-10-30 | 西安建筑科技大学 | A kind of Frozen Area freezing damage in tunnel prevention device and installation method |
| CN110080802A (en) * | 2019-04-03 | 2019-08-02 | 核工业井巷建设集团有限公司 | A kind of quick reinforcement construction method in tunnel |
| CN112901205A (en) * | 2021-03-15 | 2021-06-04 | 中铁第六勘察设计院集团有限公司 | Soft rock large-span tunnel double-layer superposed lining support removing method and structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100549691B1 (en) * | 2004-10-28 | 2006-02-07 | 재단법인 포항산업과학연구원 | A steel- concrete composite lining system for road tunnel and construction method |
| CN102182474A (en) * | 2011-05-10 | 2011-09-14 | 湖南省交通规划勘察设计院 | Reinforcing method for processing excessive deformation of primary support in tunnel construction |
| CN202132053U (en) * | 2011-06-22 | 2012-02-01 | 中铁二院工程集团有限责任公司 | VI-level surrounding-rock double track tunnel lining support structure |
| CN105537886A (en) * | 2015-12-03 | 2016-05-04 | 申志军 | Automatic manufacturing process for butterfly rebars of tunnel grid rebar truss |
| CN105649653A (en) * | 2016-03-11 | 2016-06-08 | 中铁第勘察设计院集团有限公司 | Special-section mine tunnel structure with unequal upper and lower semicircles and construction method thereof |
-
2016
- 2016-07-22 CN CN201610585497.7A patent/CN106014456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100549691B1 (en) * | 2004-10-28 | 2006-02-07 | 재단법인 포항산업과학연구원 | A steel- concrete composite lining system for road tunnel and construction method |
| CN102182474A (en) * | 2011-05-10 | 2011-09-14 | 湖南省交通规划勘察设计院 | Reinforcing method for processing excessive deformation of primary support in tunnel construction |
| CN202132053U (en) * | 2011-06-22 | 2012-02-01 | 中铁二院工程集团有限责任公司 | VI-level surrounding-rock double track tunnel lining support structure |
| CN105537886A (en) * | 2015-12-03 | 2016-05-04 | 申志军 | Automatic manufacturing process for butterfly rebars of tunnel grid rebar truss |
| CN105649653A (en) * | 2016-03-11 | 2016-06-08 | 中铁第勘察设计院集团有限公司 | Special-section mine tunnel structure with unequal upper and lower semicircles and construction method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵立财: "梁山隧道结构自动监测系统的设计与应用", 《工程研究-跨学科视野中的工程》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761851A (en) * | 2017-01-10 | 2017-05-31 | 西南交通大学 | A kind of tunnel water proofing subregion construction and its implementation using spraying waterproof technique |
| CN107023308A (en) * | 2017-05-27 | 2017-08-08 | 中国水利水电第四工程局有限公司 | A kind of hard rock large cross-section tunnel construction supporting structure and construction method |
| CN107701203A (en) * | 2017-10-18 | 2018-02-16 | 中铁第勘察设计院集团有限公司 | Pile foundation underpinning system and its construction method based on double-deck permanent lining, secondary lining structure |
| CN108180025A (en) * | 2018-01-31 | 2018-06-19 | 中铁二十局集团轨道交通工程有限公司 | A kind of circular cross section tunnel lining construction method three times |
| CN108301843A (en) * | 2018-03-02 | 2018-07-20 | 北京交通大学 | Underwater shield tunnel shock resisting composite lining structure |
| CN108716404A (en) * | 2018-05-17 | 2018-10-30 | 西安建筑科技大学 | A kind of Frozen Area freezing damage in tunnel prevention device and installation method |
| CN110080802A (en) * | 2019-04-03 | 2019-08-02 | 核工业井巷建设集团有限公司 | A kind of quick reinforcement construction method in tunnel |
| CN112901205A (en) * | 2021-03-15 | 2021-06-04 | 中铁第六勘察设计院集团有限公司 | Soft rock large-span tunnel double-layer superposed lining support removing method and structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014456A (en) | Double-layer lining special quasi-circular sectional mining method tunnel structure and construction method thereof | |
| CN101737063B (en) | Ground fissure tunnel asphalt concrete composite lining and supporting method thereof | |
| CN101864959B (en) | Method for tunneling construction of main structure of underground station | |
| CN104533446B (en) | Construction method and its structure that a kind of big cross section Support System in Soft Rock Tunnels bilayer pre- Geological disaster prevention of preliminary bracing occurs | |
| CN105649653B (en) | Circle special cross section Tunneling by mining method structure and its construction method are not waited up and down | |
| CN105909268B (en) | Prestressing combination formula well tunnel modular structure construction method and modular structure | |
| CN107091101A (en) | Mine shield handing-over tunnel folded type joint design and construction method in the middle part of marine site | |
| CN111365017B (en) | Construction method of underground intercommunication tunnel | |
| CN111520145B (en) | Underground excavation tunnel primary support slope adjusting and arch changing construction method | |
| CN108843342A (en) | Realize the assembled preliminary bracing structure of tunnel quick closure | |
| CN111794774A (en) | Rapid entering protection structure of half cut single-pressure open cut tunnel and construction method | |
| CN207033463U (en) | Mine shield handing-over tunnel folded type joint design in the middle part of marine site | |
| CN205990921U (en) | Double-deck lining cutting special defects circular cross section Tunneling by mining method structure | |
| CN111365036A (en) | I-steel-corrugated steel (GB) combined supporting structure for soft rock large-deformation tunnel | |
| CN208633847U (en) | A kind of corrugated steel supporting construction suitable for circular arch stalk formula tunnel full-section excavation | |
| CN112012763B (en) | Construction method of double-layer primary support multi-arch tunnel structure | |
| CN108374674B (en) | Six pilot tunnels, 12 step Underground Space Excavation method for protecting support | |
| CN112012762B (en) | Construction method of double-layer secondary lining multi-arch tunnel structure | |
| CN201883453U (en) | Combined pipe jacking working well | |
| CN212958666U (en) | Multi-arch tunnel structure of double-layer primary support | |
| CN206144569U (en) | Confined is advance in advance and is protected tunnel structure | |
| CN112012761B (en) | Construction method of anti-disturbance double-arch tunnel structure | |
| CN213175669U (en) | Disturbance-resistant double-arch tunnel structure | |
| CN209704560U (en) | Build the scaffolding structure that an ultra shallow buries Large Underground space | |
| CN208816133U (en) | A kind of assembled preliminary bracing structure for realizing tunnel quick closure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |