CN110118091A - One kind having the lining cutting of cushion performance tunnel support and construction method - Google Patents
One kind having the lining cutting of cushion performance tunnel support and construction method Download PDFInfo
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- CN110118091A CN110118091A CN201910561180.3A CN201910561180A CN110118091A CN 110118091 A CN110118091 A CN 110118091A CN 201910561180 A CN201910561180 A CN 201910561180A CN 110118091 A CN110118091 A CN 110118091A
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 141
- 229910052742 iron Inorganic materials 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000008093 supporting effect Effects 0.000 claims abstract description 35
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 98
- 238000007747 plating Methods 0.000 claims description 41
- 230000006837 decompression Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 9
- 230000005764 inhibitory process Effects 0.000 claims description 8
- 238000003032 molecular docking Methods 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 32
- 230000008859 change Effects 0.000 abstract description 11
- 239000000872 buffer Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000013456 study Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses one kind to have the lining cutting of cushion performance tunnel support and construction method, it is installed on outer layer prop, middle layer prop and the internal layer prop to match in tunnel palisades and with its shape, tunnel initial-stage caused by frost heave and rock burst after tunnel excavation is adapted to and deforms；First mechanism of decompressor, can be in steelframe in the pressure generated by tunnel palisades, and the first jacking block slides into first shell and compresses the first elastic component makes steelframe still have supporting performance so that the pressure is released and buffers；Second mechanism of decompressor can not only improve the bonding strength and stability of axially adjacent two fashioned iron, and be used cooperatively with first mechanism of decompressor and be able to bear stronger pressure；Internal layer decompressor in internal layer prop makes it guarantee there is supporting performance so that retaining-plate can adapt to tunnel generation rock burst, frost heave or soft rock large deformation and cause change in shape.
Description
Technical field
The present invention relates to Tunnel Engineering fields, more particularly to one kind to have the lining cutting of cushion performance tunnel support and construction party
Method.
Background technique
With a large amount of construction of tunneling and underground engineering, " depth ", " length ", " danger ", " big " have become current tunnel engineering
Main feature, high-ground stress environment also bring a series of problems.Be mainly manifested in: one, hard rock Rockburst Problem buries greatly with passing through
Long tunnel deep, under large ground pressure increases year by year, and China's Rock-burst in Underground Rock Engineering is in the trend that takes place frequently；Two, soft rock large deformation is asked
Topic, such rock mass have the characteristics that intensity is low, character is poor, meets water and easily soften that large deformation disaster is asked in underground chamber process of construction
Topic protrudes, and seriously jeopardizes the construction and operation security of underground chamber.
So far, for the rock burst and soft rock tunnel large deformation problem occurred in railway, highway engineering construction, although opening
Opened up numerous correlative studys, but and not formed a set of effective technical guarantee system, applied in the changeable engineering of even more complex
Under the conditions of work, traditional supporting construction receives great challenge, meanwhile, extremely frigid zones railway, vcehicular tunnel are easy to produce jelly
Swollen harm；Existing tunnel support reinforcement structure and construction method cannot effectively adapt to tunnel rock burst, frost heave or soft rock large deformation and draw
The shape risen changes, and cannot be released effectively the additional load that tunnel causes rock burst, frost heave or soft rock large deformation.
Existing tunnel support is to be easily installed and make, and is spliced to form on circumferential direction, by tunnel rock
When the pressure of wall, the position of splicing easily deforms or is broken, so that tunnel support be made to lose support capacity.
Summary of the invention
It can adapt to tunnel technical problem to be solved by the invention is to provide one kind and rock burst, frost heave or the big change of soft rock occur
Shape causes change in shape, and can alleviate the pressure that release tunnel-shaped variation generates, and can be improved after construction molding
The tunnel support lining cutting of supporting performance and construction method.
In order to solve the above technical problems, the technical solution used in the present invention is:
One kind having the lining cutting of cushion performance tunnel support, including being located at the supporting to match in tunnel palisades and with its arch
Body, the prop include the outer layer prop, middle layer prop and internal layer prop being arranged from outside to inside, the middle layer supporting
The both ends of body and internal layer prop circumferential direction are fixed with tunnel inverted arch；The outer layer prop includes flexible net, the flexible net
It contacts with tunnel palisades, and is fixed by more spaced decompression anchor poles with tunnel palisades；Described decompression anchor pole one end is embedding
Enter in tunnel palisades, the other end is fixed with flexible net；The middle layer prop includes steelframe, rigidity net and middle layer decompressor；
The steelframe includes fashioned iron；The fashioned iron has multiple along tunnel axial direction spaced set, and is multiple fashioned iron lists along tunnel circumferential direction
The domes that first body is successively spliced to form；The rigidity net is fixed between two adjacent fashioned iron；The middle layer decompressor
The second decompression including first mechanism of decompressor between adjacent two fashioned iron cell cube, and between two adjacent fashioned iron
Mechanism；First mechanism of decompressor includes first shell, the first jacking block and the first elastic component；The first shell and the first jacking block
It is individually fixed in the butt end of two fashioned iron cell cubes, and first shell and the first jacking block are along tunnel circumferential direction male-female engagement and sliding connects
It connects；First elastic component is located in first shell and between the first jacking block end and first shell bottom, and described first
Elastic component can play buffering inhibition when the first jacking block is slided into first shell；Second mechanism of decompressor includes the
Two shells, the second jacking block and the second elastic component；Second shell length direction both ends are individually fixed in axial corresponding one group
The end of fashioned iron cell cube, the both ends of the second jacking block length direction are individually fixed in another group of axially corresponding two fashioned iron list
The end of first body, the second shell along tunnel circumferential direction male-female engagement and are slidably connected with the second jacking block；Second elastic component
In second shell and between the second jacking block end and second shell bottom, second elastic component can be on the second top
Block plays buffering inhibition when sliding into second shell；The internal layer prop includes retaining-plate and internal layer decompressor；
The retaining-plate is successively spliced to form by multiple corrugated platings along tunnel circumferential direction and axially；The internal layer decompressor is located at circumferential phase
Between two adjacent corrugated platings；The internal layer decompressor include to body contact, docking block and third elastic component, it is described to body contact with it is right
Connect block and be individually fixed in two corrugated plating butt ends, it is described to body contact with dock block along tunnel circumferential direction male-female engagement and be slidably connected；
The third elastic component is located in body contact and between docking block end and between body contact bottom, and the third elastic component can
Buffering inhibition is played to when sliding in body contact docking block.
A further technical solution lies in: the decompression anchor pole is equipped with top plate, decompression part and nut；The top plate is in soft
Property net on the inside of and be in contact with it；The nut is connect with decompression spiral thread on anchor bolt；The decompression part is between top plate and nut.
It is I-shaped a further technical solution lies in: the fashioned iron, the web of rigidity net end and fashioned iron is solid
It is fixed.
A further technical solution lies in: be fixed with multiple supporting beams between the web of adjacent two fashioned iron, and second shell with
Second jacking block is fixed by supporting beam and two adjacent fashioned iron.
A further technical solution lies in: multiple reinforcing ribs are equidistantly fixed in the supporting beam, the reinforcing rib is
Ring structure, and fixed with rigidity net.
A further technical solution lies in: two adjacent corrugated platings are fixed with first flange in tunnel circumferential direction splice ends, institute
It states and body contact is individually fixed in the first flange of corresponding position with block is docked；Two adjacent corrugated platings are in tunnel axial direction splice bits
I-steel is installed, and corrugated plating connect blending bolt with I-steel by second flange and fixes, and in bolt in second flange
Position offers the long hole along tunnel circumferential direction.
A further technical solution lies in: the outside ripple recess of the corrugated plating is fixed with aqueduct with holes, institute
It states and is covered with pervious bed on water guide tube outer surface.
A further technical solution lies in: heating tape is equipped with inside the aqueduct.
A kind of construction method with cushion performance tunnel support lining cutting, it is characterised in that: the following steps are included:
Step S1: installing outer layer prop, install flexible net on the tunnel palisades after excavation, and wearing decompression anchor pole will
Flexible net is fixed on tunnel palisades, carries out whitewashing processing formation external protection after installing a distance；
Step S2: installing middle layer prop after tunnel bottom pours inverted arch, first installs steelframe and first mechanism of decompressor, will
First shell and the first jacking block in first mechanism of decompressor are individually fixed in each fashioned iron cell cube both ends, then install steelframe, steel
Each fashioned iron circumferential direction both ends are fixed with tunnel inverted arch in frame, and each fashioned iron cell cube is spliced into during a ring-like steel, by two
After side to top mode is spliced, and the first elastomer is placed in first shell, then the first jacking block is coupled with first shell；
Step S3: the both ends of second shell are individually fixed in axially adjacent by second mechanism of decompressor of installation and rigidity net
Two fashioned iron cell cube ends, and the second elastic component is placed in second shell, the second jacking block be coupled in second shell after,
The both ends of second jacking block are fixed with to two adjacent fashioned iron cell cube ends respectively, consolidate rigidity net after every installation a distance
Due on steelframe, and carries out whitewashing processing and form middle protective layer；
Step S4: installation internal layer prop, by internal layer decompressor to body contact with dock block be individually fixed in it is each
Type corrugated plating circumferential direction both ends, corrugated plating assembly are formed during retaining-plate, and circumferential assembly, and the two of each ring corrugated plating are first carried out
End is fixed with tunnel inverted arch, in each ring corrugated plating splicing, is spliced by two sides to top mode, and need to be by third elasticity
Part is placed in in body contact, then makes to be cooperatively connected to body contact with block is docked；Axial splicing, peace are carried out after the completion of the splicing of one ring corrugated plating
Slip casting formation inner protective layer is carried out between retaining-plate and middle protective layer after filling a distance.
A further technical solution lies in: in step s 4, during splicing corrugated plating, pacify on the outside of the corrugated plating in trough
Dress is covered with pervious bed and aqueduct with holes, and heating tape is worn inside aqueduct.
The beneficial effects of adopting the technical scheme are that
It is installed on outer layer prop, middle layer prop and the internal layer prop to match in tunnel palisades and with its shape,
Wherein, the flexible net in outer layer prop can be good at adapting to tunnel initial-stage caused by frost heave and rock burst after tunnel excavation and become
Shape；Steelframe and rigidity net in the prop of middle layer can provide the skeleton of strength support for tunnel support；In internal layer prop
Retaining-plate can further promote the supporting performance of tunnel support entirety；
First mechanism of decompressor in the prop of middle layer, can in steelframe in the pressure generated by tunnel palisades, first
Jacking block slides into shell and compresses the first elastic component, so that the pressure is released and buffers, steelframe just can adapt to tunnel
Rock burst, frost heave or soft rock large deformation occurs and causes change in shape, makes steelframe that still there is supporting performance；
Second mechanism of decompressor in the prop of middle layer can not only improve the bonding strength and stabilization of axially adjacent two fashioned iron
Property, and cooperate fashioned iron and type after the completion of construction in later period with the use of stronger pressure is able to bear with first mechanism of decompressor
The supporting that concrete structure is formed between steel, in the pressure generated by tunnel palisades, the second jacking block is determined sliding in shell to second
The second elastic component is moved and compressed, so that the pressure is released and is buffered with the cooperation of first mechanism of decompressor, so that middle layer supporting physical efficiency
It enough adapts to tunnel generation rock burst, frost heave or soft rock large deformation and causes change in shape, make it that still there is supporting performance；
Rigidity net in the prop of middle layer, can be improved bonding strength and stability between steelframe Shaped Steel, and
The supporting intensity of concrete structure between fashioned iron can be improved after the completion of construction in later period；
Internal layer decompressor in internal layer prop can dock block to docking when retaining-plate is by tunnel palisades pressure
Third elastic component is slided and compressed in shell, so that retaining-plate can adapt to tunnel generation rock burst, frost heave or soft rock large deformation and cause
Change in shape makes it guarantee there is supporting performance；
Middle layer decompressor and internal layer decompressor are the circumferential stitching position of respective prop, by tunnel palisades
Pressure when, the stitching position can be made to be buffered, avoid splicing position deform or be broken, lose tunnel support
Support capacity；
A kind of construction method with cushion performance tunnel support lining cutting can be installed convenient for the tunnel support, and can
Improve the supporting performance of the branch tunnel support.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is outer layer prop structural scheme of mechanism of the present invention；
Fig. 3 is prop structural schematic diagram in middle layer of the present invention；
Fig. 4 is decompressor structural schematic diagram in middle layer of the present invention；
Fig. 5 is decompressor the schematic diagram of the section structure in middle layer of the present invention；
Fig. 6 is internal layer prop structural schematic diagram of the present invention；
Fig. 7 is middle internal layer decompressor structural schematic diagram of the present invention；
Fig. 8 is middle internal layer decompressor the schematic diagram of the section structure of the present invention；
Fig. 9 is decompression anchor structure schematic diagram of the present invention；
Figure 10 is aqueduct structure schematic diagram of the present invention.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, those skilled in the art's every other embodiment obtained without making creative work,
It shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
Embodiment 1:
As shown in FIG. 1 to FIG. 8, one kind have the lining cutting of cushion performance tunnel support, including be located at tunnel palisades 1 in and and its
The prop that arch matches, the prop include the outer layer prop 2, middle layer prop 3 and internal layer being arranged from outside to inside
Prop 4, the middle layer prop 3 both ends circumferential with internal layer prop 4 are fixed with tunnel inverted arch；The outer layer prop
2 include flexible net 5, and the flexible net 5 is contacted with tunnel palisades 1, and by more spaced decompression anchor poles 6 and tunnel rock
Wall 1 is fixed；In 6 one end of decompression anchor pole insertion tunnel palisades 1, the other end and flexible net 5 are fixed.
As shown in Fig. 2, the flexible net 5 of 2 weight of outer layer prop is steel wire, decompression anchor pole 6 passes through flexible net 5 and squeezes into tunnel
In road palisades 1, flexible net 5 is fixed on tunnel palisades 1.
It is installed on outer layer prop 2, middle layer prop 3 and the internal layer supporting to match in tunnel palisades 1 and with its shape
Body 4, wherein the flexible net 5 in outer layer prop 2 can be good at adapting to after tunnel excavation at the beginning of tunnel caused by frost heave and rock burst
Phase deformation；Steelframe 7 and rigidity net 8 in middle layer prop 3 can provide the skeleton of strength support for tunnel support；Internal layer supporting
Retaining-plate 10 in body 4 can further promote the supporting performance of tunnel support entirety.
As shown in Figure 3-Figure 5, the middle layer prop 3 includes steelframe 7, rigidity net 8 and middle layer decompressor 9；The steel
Frame 7 includes fashioned iron 12；The fashioned iron 12 has multiple along tunnel axial direction spaced set, and is multiple fashioned iron units along tunnel circumferential direction
The domes that body is successively spliced to form；The rigidity net 8 is fixed between two adjacent fashioned iron 12；The middle layer decompressor
9 include first mechanism of decompressor 13 between adjacent two fashioned iron cell cube, and between two adjacent fashioned iron 12
Two mechanisms of decompressor 14；First mechanism of decompressor 13 includes first shell 131, the first jacking block 132 and the first elastic component 133；Institute
It states first shell 131 and the first jacking block 132 is individually fixed in the butt end of two fashioned iron cell cubes, and first shell 131 and first
Jacking block 132 is along tunnel circumferential direction male-female engagement and is slidably connected；First elastic component 133 be located in first shell 131 and between
Between 131 bottom of first jacking block, 132 end and first shell, first elastic component 133 can be in the first jacking block 132 to first
Buffering inhibition is played when sliding in shell 131；Second mechanism of decompressor 14 includes second shell 141, the second jacking block 142
With the second elastic component 143；The 141 length direction both ends of second shell are individually fixed in axial corresponding one group of fashioned iron cell cube
End, the both ends of 142 length direction of the second jacking block are individually fixed in another group of axially corresponding two fashioned iron cell cube
End, the second shell 141 along tunnel circumferential direction male-female engagement and are slidably connected with the second jacking block 142；Second elastic component
143 are located in second shell 141 and between 141 bottom of 142 end of the second jacking block and second shell, second elastic component
143 can play buffering inhibition when the second jacking block 142 is slided into second shell 141.
The circumferential both ends of each fashioned iron 12 on steelframe 7 in middle layer prop 3 are fixed with tunnel bottom inverted arch；First
Elastic component 133 and the second elastic component 143 can be the complex of spring, rubber or spring and rubber；If the first elastic component 133
With when containing rubber material in the second elastic component 143, relief hole need to be opened up in first shell 131 and second shell 141, to adapt to
The change in shape of first elastic component 133 and the second elastic component 143；The reticular structure that rigidity net 8 can be formed for reinforcement welding.
First mechanism of decompressor 13 in middle layer prop 3, can in steelframe 7 in the pressure generated by tunnel palisades 1,
First jacking block 132 slides into first shell 131 and compresses the first elastic component 133, so that the pressure is released and buffers, steel
Frame 7 just can adapt to tunnel generation rock burst, frost heave or soft rock large deformation and cause change in shape, and steelframe 7 is made still to have supporting
Energy；Second mechanism of decompressor 14 in middle layer prop 3, can not only improve the bonding strength and stabilization of axially adjacent two fashioned iron 12
Property, and cooperate fashioned iron 12 after the completion of construction in later period with the use of stronger pressure is able to bear with first mechanism of decompressor 13
The supporting that concrete structure is formed between fashioned iron 12, in the pressure generated by tunnel palisades 1, the second jacking block 142 is to the
Two determine that the second elastic component 143 is slided and compressed in shell, so that the pressure is released and is buffered with the cooperation of first mechanism of decompressor 13, make
Middle layer prop 3 can adapt to that rock burst occurs for tunnel, frost heave or soft rock large deformation cause change in shape, making it still has branch
Protect performance；Rigidity net 8 in middle layer prop 3 can be improved bonding strength and stability between 7 Shaped Steel 12 of steelframe, and
And the supporting intensity of concrete structure between fashioned iron 12 can be improved after the completion of construction in later period.
As Figure 6-Figure 8, internal layer prop 4 includes retaining-plate 10 and internal layer decompressor 11；The retaining-plate 10 by
Multiple corrugated platings 101 are successively spliced to form along tunnel circumferential direction and axially；The internal layer decompressor 11 is located at adjacent two of circumferential direction
Between corrugated plating 101；Internal layer decompressor 11 includes to body contact 111, docks block 112 and third elastic component 113, described to body contact
111 with dock block 112 and be individually fixed in two corrugated platings, 101 butt end, it is described to body contact 111 with dock block 112 along tunnel circumferential direction
It male-female engagement and is slidably connected；The third elastic component 113 be located in body contact 111 and between docking 112 end of block with dock
Between 111 bottom of shell, the third elastic component 113 can play buffering when docking block 112 to sliding in body contact 111 and hinder
Effect.
Corrugated plating 101 is non-fully fixed in axially splicing, enables two axially adjacent corrugated platings 101 in circumferential direction
The upper changing of the relative positions can specifically be used on connecting flange and open up 117 blending bolt of long hole and fix；Third elastic component 113 can be
The complex of spring, rubber or spring and rubber；It, need to be on to body contact 111 if when containing rubber material in third elastic component 113
Relief hole is opened up, to adapt to the change in shape of third elastic component 113.
Internal layer decompressor 11 in internal layer prop 4 can dock block when retaining-plate 10 is by tunnel 1 pressure of palisades
112 slide into body contact 111 and compress third elastic component 113, so that retaining-plate 10 can adapt to tunnel and rock burst, frost heave occurs
Or soft rock large deformation causes change in shape, it is made to guarantee there is supporting performance.
Middle layer decompressor 9 and internal layer decompressor 11 are the circumferential stitching position of respective prop, by tunnel
When the pressure of palisades, the stitching position can be made to be buffered, avoid the position of splicing from deforming or be broken, make tunnel support
Lose support capacity.
The concrete construction method of the present embodiment the following steps are included:
Step S1: outer layer prop 2 is installed, flexible net 5 is installed on the tunnel palisades 1 after excavation, and wear decompression anchor
Flexible net 5 is fixed on tunnel palisades 1 by bar 6, after installing a distance, is formed in pneumatically placed concrete in mounted flexible net 5
External protection；
Step S2:
Install middle layer prop 3, first after tunnel bottom pours inverted arch, successively install first mechanism of decompressor 13, steelframe 7,
Second mechanism of decompressor 14 and rigidity net 8；
When first mechanism of decompressor 13 is installed, first shell 131 and the first jacking block 132 are individually fixed in each fashioned iron unit
Body both ends, and the second elastic component 143 is placed in second shell 141；
When installing steelframe 7, each fashioned iron cell cube is spliced into during a ring-like steel 12, by circumferential both ends to top mode
Splicing, and fixed with tunnel inverted arch in the fashioned iron cell cube at circumferential both ends, adjacent two fashioned iron cell cube, will in splicing
The insertion of first jacking block 132 is installed in first shell 131；
When second mechanism of decompressor 14 is installed, the both ends of second shell 141 are individually fixed in two axially adjacent fashioned iron lists
First body end portion, the second jacking block 142 be coupled in second shell 141 after, by the both ends of the second jacking block 142 respectively with Xiang Xianglin
Two fashioned iron cell cube ends fix；
When rigidity net 8 is installed, after every first mechanism of decompressor 13 for installing a distance, steelframe 7 and second mechanism of decompressor 14,
Rigidity net 8 is fixed on steelframe 7, forms middle protective layer in pneumatically placed concrete on mounted rigidity net 8；
Step S3: installation internal layer prop 4 first installs internal layer decompressor 11 and installs retaining-plate 10 again
When internal layer decompressor 11 is installed, each type corrugated plating 101 will be individually fixed in block 112 is docked to body contact 111
Circumferential both ends, and third elastic component 113 is placed in in body contact 111；
When retaining-plate 10 is installed, circumferential assembly is first carried out, when each ring corrugated plating 101 splices, by circumferential both ends to top
Mode is spliced, and the corrugated plating 101 at both ends is fixed with tunnel inverted arch, is made to dock the insertion of block 112 in splicing and is installed on pair
In body contact 111；Axial splicing is carried out after the completion of the splicing of one ring corrugated plating 101；In retaining-plate 10 and middle guarantor after installation a distance
Injection concrete is carried out between sheath forms inner protective layer.
The effect of concrete is so that this layer of prop closing, supports and reinforce to the generation of tunnel palisades in above-mentioned steps
Effect, and outside prop, middle layer prop and internal layer supporting can be made to form whole support system, tunnel is played by force
The effect of power supporting.
In step s 2, the first shell 131 in first mechanism of decompressor 13 is individually fixed in the first jacking block 132 each
Fashioned iron cell cube both ends, first mechanism of decompressor 13 can also be completed to install during fashioned iron cell cube is spliced into fashioned iron 12,
Its installation process convenient and efficient can quickly form middle layer prop 3, it is made to play support action；In step s 4, by internal layer
The circumferential both ends of each type corrugated plating 101 are individually fixed in block 112 is docked to body contact 111 in decompressor 11, by ripple
In the mutual splicing of plate 101, its installation process convenient and efficient of the installation of internal layer decompressor 11 can be convenient for, it being capable of quick shape
At internal layer prop 4, it is made to play support action.
Embodiment 2:
On the basis of embodiment 1, as shown in figure 9, decompression anchor pole 6 is equipped with top plate 601, decompression part 602 and nut
603；The top plate 601 is in 5 inside of flexible net and is in contact with it；The nut 603 is threadedly coupled with decompression anchor pole 6；It is described to subtract
Casting die 602 is between top plate 601 and nut 603；Top plate 601 depressurizes part 602 for being bonded flexible net 5 with tunnel palisades 1
Buffer function can be played when tunnel deforms, depressurizing part 602 can be can be spring, rubber or spring and rubber
Complex.
Fashioned iron 12 is I-shaped, and 8 end of rigidity net and the web of fashioned iron 12 are fixed；The rigidity net after whitewashing processing
8 form high strength support with concrete, and rigidity net 8 is located at concrete medial position, plays better supporting effect.
As shown in figure 4, being fixed with multiple supporting beams 701 between the web of adjacent two fashioned iron 12, and second shell 141 and
Two jacking blocks 142 are fixed by supporting beam 701 and two adjacent fashioned iron 12；The second shell 141 and the second jacking block 142 made has
Supporter can fight stronger pressure, and supporting beam 701 can also strengthen the bonding strength of axially adjacent two fashioned iron 12.
As shown in figure 4, being equidistantly fixed with multiple reinforcing ribs 702 in supporting beam 701, the reinforcing rib 702 is ring junction
Structure, and it is fixed with rigidity net 8, after the completion of construction, the bonding strength of supporting beam 701 and concrete is improved in conjunction with concrete.
As shown in Figure 6 and Figure 7, two adjacent corrugated platings 101 are fixed with first flange 114, institute in tunnel circumferential direction splice ends
It states and body contact 111 is individually fixed in the first flange 114 of corresponding position with block 112 is docked；Two adjacent corrugated platings 101 are in tunnel
Road axial direction stitching position is equipped with I-steel 115, and corrugated plating 101 connect blending bolt with I-steel 115 by second flange 116
It is fixed, and the long hole 117 along tunnel circumferential direction is offered in bolt location in second flange 116；First flange 114 can be better
Make to body contact 111 with to dock block 112 and corrugated plating 101 fixed；I-steel 115 is capable of the supporting intensity of Enhanced support plate 10.
As shown in Figure 10, the outside ripple recess of corrugated plating 101 is fixed with aqueduct 118 with holes, the aqueduct
It is covered with pervious bed 119 on 118 outer surfaces, and is equipped with heating tape 120 inside aqueduct 118；Aqueduct 118 is used for tunnel rock
Water under wall 1 seeps is drained, and pervious bed 119 is geotextiles, and the hole on aqueduct 118 is prevented to be blocked；Heating tape 120 can prevent
Water in aqueduct 118 freezes, and causes the blocking of aqueduct 118 that cannot drain in time water, causes tunnel palisades 1 that freezing up occurs existing
As；118 both ends end of aqueduct is connected to by pipeline with the rhone of tunnel bottom two sides.
Embodiment 3:
On the basis of embodiment 2, in step s 4, during splicing corrugated plating 101, in 101 outside trough of corrugated plating
Interior installation is covered with pervious bed 119 and aqueduct 118 with holes, and wears heating tape inside it when installing aqueduct 118
120。
The above is only presently preferred embodiments of the present invention, anyone content according to the present invention makes the present invention a little
Simple modification, deformation and equivalent replacement each fall within protection scope of the present invention.
Claims (10)
1. one kind has the lining cutting of cushion performance tunnel support, including being located at the branch to match in tunnel palisades (1) and with its arch
Watch box, it is characterised in that: the prop includes the outer layer prop (2), middle layer prop (3) and internal layer being arranged from outside to inside
Prop (4), the middle layer prop (3) and the both ends of internal layer prop (4) circumferential direction are fixed with tunnel inverted arch；
The outer layer prop (2) includes flexible net (5), and the flexible net (5) contacts with tunnel palisades (1), and by more
Spaced decompression anchor pole (6) and tunnel palisades (1) are fixed；The decompression anchor pole (6) one end is embedded in tunnel palisades (1),
The other end and flexible net (5) are fixed；
The middle layer prop (3) includes steelframe (7), rigidity net (8) and middle layer decompressor (9)；The steelframe (7) includes type
Steel (12)；The fashioned iron (12) have along tunnel axial direction spaced set it is multiple, and along tunnel circumferential direction be multiple fashioned iron cell cubes according to
The secondary domes being spliced to form；The rigidity net (8) is fixed between adjacent two fashioned iron (12)；The middle layer decompressor
(9) include first mechanism of decompressor (13) between adjacent two fashioned iron cell cube, and positioned at adjacent two fashioned iron (12) it
Between second mechanism of decompressor (14)；
First mechanism of decompressor (13) includes first shell (131), the first jacking block (132) and the first elastic component (133)；It is described
First shell (131) and the first jacking block (132) are individually fixed in the butt end of two fashioned iron cell cubes, and first shell (131) with
First jacking block (132) is along tunnel circumferential direction male-female engagement and is slidably connected；First elastic component (133) is located at first shell
(131) in and between the first jacking block (132) end and first shell (131) bottom, first elastic component (133) can
Buffering inhibition is played in the first jacking block (132) sliding into first shell (131)；
Second mechanism of decompressor (14) includes second shell (141), the second jacking block (142) and the second elastic component (143)；It is described
Second shell (141) length direction both ends are individually fixed in the end of axial corresponding one group of fashioned iron cell cube, second top
The both ends of block (142) length direction are individually fixed in the end of another group of axial corresponding two fashioned iron cell cube, the second shell
Body (141) along tunnel circumferential direction male-female engagement and is slidably connected with the second jacking block (142)；Second elastic component (143) is located at the
In two shells (141) and between the second jacking block (142) end and second shell (141) bottom, second elastic component
(143) buffering inhibition can be played in the second jacking block (142) sliding into second shell (141)；
The internal layer prop (4) includes retaining-plate (10) and internal layer decompressor (11)；The retaining-plate (10) is by multiple waves
Card (101) is successively spliced to form along tunnel circumferential direction and axially；The internal layer decompressor (11) is located at circumferential two adjacent waves
Between card (101)；
The internal layer decompressor (11) includes to body contact (111), docking block (112) and third elastic component (113), the docking
Shell (111) with dock block (112) and be individually fixed in two corrugated platings (101) butt end, it is described to body contact (111) with dock block
(112) it along tunnel circumferential direction male-female engagement and is slidably connected；The third elastic component (113) be located in body contact (111) and between
Block (112) end is docked between body contact (111) bottom, the third elastic component (113) can dock block (112) to right
Buffering inhibition is played when sliding in body contact (111).
2. according to claim 1 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: the decompression anchor pole
(6) top plate (601), decompression part (602) and nut (603) are equipped with；The top plate (601) on the inside of the flexible net (5) and and its
Contact；The nut (603) is threadedly coupled with decompression anchor pole (6)；The decompression part (602) is located at top plate (601) and nut
(603) between.
3. according to claim 1 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: the fashioned iron (12)
For I-shaped, rigidity net (8) end and the web of fashioned iron (12) are fixed.
4. according to claim 3 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: adjacent two fashioned iron
(12) it is fixed between web multiple supporting beams (701), and second shell (141) and the second jacking block (142) are by support
Beam (701) and adjacent two fashioned iron (12) are fixed.
5. according to claim 4 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: the supporting beam
(701) it is equidistantly fixed on multiple reinforcing ribs (702), the reinforcing rib (702) is ring structure, and solid with rigidity net (8)
It is fixed.
6. according to claim 1 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: two adjacent ripples
Plate (101) is fixed with first flange (114) in tunnel circumferential direction splice ends, it is described to body contact (111) with to dock block (112) solid respectively
Due in the first flange (114) of corresponding position；Adjacent two corrugated platings (101) are equipped with I-steel in tunnel axial direction stitching position
(115), and corrugated plating (101) connect blending bolt with I-steel (115) by second flange (116) and fixes, and second flange
(116) long hole (117) along tunnel circumferential direction is offered in bolt location on.
7. according to claim 1 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: the corrugated plating
(101) outside ripple recess is fixed with aqueduct with holes (118), is covered on aqueduct (118) outer surface permeable
Layer (119).
8. according to claim 7 a kind of with the lining cutting of cushion performance tunnel support, it is characterised in that: the aqueduct
(118) internal to be equipped with heating tape (120).
9. applying a kind of construction method with cushion performance tunnel support lining cutting described in claim 1, it is characterised in that: packet
Include following steps:
Step S1: installing outer layer prop (2), installs flexible net (5) on the tunnel palisades (1) after excavation, and wear decompression
Flexible net (5) is fixed on tunnel palisades (1) by anchor pole (6), after installing a distance, is sprayed on mounted flexible net (5)
Concrete forms external protection；
Step S2:
It installs middle layer prop (3), first after tunnel bottom pours inverted arch, first mechanism of decompressor (13), steelframe is successively installed
(7), second mechanism of decompressor (14) and rigidity net (8)；
When first mechanism of decompressor (13) are installed, first shell (131) and the first jacking block (132) are individually fixed in each fashioned iron list
First body both ends, and the second elastic component (143) is placed in second shell (141)；
When installing steelframe (7), each fashioned iron cell cube is spliced into during a ring-like steel (12), by circumferential both ends to top mode
Splicing, and fixed with tunnel inverted arch in the fashioned iron cell cube at circumferential both ends, adjacent two fashioned iron cell cube, will in splicing
First jacking block (132) insertion is installed in first shell (131)；
When second mechanism of decompressor (14) are installed, the both ends of second shell (141) are individually fixed in two axially adjacent fashioned iron lists
First body end portion, the second jacking block (142) be coupled with second shell (141) in after, by the both ends of the second jacking block (142) respectively with
It is fixed to two adjacent fashioned iron cell cube ends；
When rigidity net (8) are installed, first mechanism of decompressor (13), steelframe (7) and second mechanism of decompressor of every installation a distance
(14) after, rigidity net (8) is fixed on steelframe (7), forms middle protective layer in pneumatically placed concrete on mounted rigidity net (8)；
Step S3: installation internal layer prop (4) first installs internal layer decompressor (11) and installs retaining-plate (10) again；
When internal layer decompressor (11) are installed, each type corrugated plating will be individually fixed in block (112) is docked to body contact (111)
(101) circumferential both ends, and third elastic component (113) is placed in in body contact (111)；
When retaining-plate (10) are installed, circumferential assembly is first carried out, when each ring corrugated plating (101) is spliced, by circumferential both ends to top
Mode is spliced, and the corrugated plating (101) at both ends is fixed with tunnel inverted arch, makes to dock block (112) insertion installation in splicing
In in body contact (111)；Axial splicing is carried out after the completion of the splicing of one ring corrugated plating (101)；In retaining-plate after installation a distance
(10) injection concrete is carried out between middle protective layer forms inner protective layer.
10. a kind of construction method with cushion performance tunnel support lining cutting according to claim 8, it is characterised in that:
In step s3, during splicing corrugated plating (101), on the outside of the corrugated plating (101) in trough installation be covered with pervious bed (119) and
Aqueduct (118) with holes, and heating tape (120) are worn inside aqueduct (118).
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| CN201910561180.3A CN110118091B (en) | 2019-06-26 | 2019-06-26 | Tunnel support lining with buffer performance and construction method |
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| CN201910561180.3A CN110118091B (en) | 2019-06-26 | 2019-06-26 | Tunnel support lining with buffer performance and construction method |
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| CN111075477A (en) * | 2020-01-17 | 2020-04-28 | 中铁工程装备集团有限公司 | Semi-rigid supporting structure system of large-section soft rock tunnel and construction method of semi-rigid supporting structure system |
| CN111734441A (en) * | 2020-07-24 | 2020-10-02 | 沈阳促晋科技有限公司 | Anti-deformation shock-absorbing protection structure for tunnel top |
| CN112963169A (en) * | 2021-02-25 | 2021-06-15 | 西华大学 | Tunnel excavation large deformation strong support device |
| CN113090310A (en) * | 2021-04-06 | 2021-07-09 | 中南大学 | Multidirectional supporting system for tunnel |
| CN113137242A (en) * | 2021-03-16 | 2021-07-20 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Assembled combined supporting structure for deep underground space tunnel |
| CN113605928A (en) * | 2021-09-17 | 2021-11-05 | 辽宁工程技术大学 | Negative-rigidity roadway O-shaped shed support capable of repeatedly buffering vibration attenuation and energy absorption coupling effect |
| CN115110966A (en) * | 2022-08-30 | 2022-09-27 | 中铁十六局集团地铁工程有限公司 | Tunnel supporting structure and construction method |
| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
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| CN113605928A (en) * | 2021-09-17 | 2021-11-05 | 辽宁工程技术大学 | Negative-rigidity roadway O-shaped shed support capable of repeatedly buffering vibration attenuation and energy absorption coupling effect |
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| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116291603B (en) * | 2023-03-10 | 2023-11-28 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116950687A (en) * | 2023-09-20 | 2023-10-27 | 太原西北二环高速公路发展有限公司 | Tunnel supporting system penetrating through multilayer goaf and construction method thereof |
| CN116950687B (en) * | 2023-09-20 | 2023-12-01 | 太原西北二环高速公路发展有限公司 | Tunnel supporting system penetrating through multilayer goaf and construction method thereof |
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