CN108643944A - One kind being based on third system rich water fine sand layer constructing tunnel initial stage support device - Google Patents
One kind being based on third system rich water fine sand layer constructing tunnel initial stage support device Download PDFInfo
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- CN108643944A CN108643944A CN201810457294.9A CN201810457294A CN108643944A CN 108643944 A CN108643944 A CN 108643944A CN 201810457294 A CN201810457294 A CN 201810457294A CN 108643944 A CN108643944 A CN 108643944A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000004576 sand Substances 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000014759 maintenance of location Effects 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 17
- 239000011435 rock Substances 0.000 abstract description 7
- 230000002829 reductive effect Effects 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural 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 present invention relates to technical field of tunnel construction, more particularly to one kind being based on third system rich water fine sand layer constructing tunnel initial stage support device.The technical problem to be solved by the present invention is to third system rich water thin silt substrate soft rock phenomenons to be easy to damage support device, lead to the generation of tunnel cave phenomenon.In order to solve the above-mentioned technical problem, it is based on third system rich water fine sand layer constructing tunnel initial stage support device the present invention provides such a, including bottom plate, the top of the bottom plate is fixedly connected with interior shield and outer shield respectively, it is fixedly connected between the interior shield and outer shield and inhibits deformation mechanism, first support bar and second support bar have been respectively fixedly connected with from the bottom up between the interior shield inner wall.Ponding on face can be expelled to outside tunnel by the present invention, substantially reduce the water pressure of face, and sandy-silt seepage is preferably controlled, and met the requirement of Tunnel Construction Schedule, reduced the risk of tunnel construction.
Description
Technical field
The present invention relates to technical field of tunnel construction, more particularly to one kind being based on third system rich water fine sand layer constructing tunnel
With initial stage support device.
Background technology
When constructing tunnel, because of its particularity, the tunnel for construction is needed to give initial stage support, to ensure work progress
In safety, it is ensured that it is perfectly safe, as Chinese patent CN201720781967.7 provide it is a kind of applied to constructing tunnel
Support device, including tunnel foundation and tunnel body, the tunnel body are fixed at the top of tunnel foundation, the tunnel foundation
Top is movably installed with supporting beam, and the supporting beam bottom end is fixedly mounted there are four universal wheel, and four universal wheels are located at branch
Beam corner location is supportted, and four universal wheels are in contact with tunnel foundation, the supporting beam top is installed with mounting blocks, institute
It states mounting blocks top to open up there are two through-hole, two through-holes are based on supporting beam center symmetric setting, and activity in two through-holes
Supporting rod is installed, fluted, side of two grooves far from opening is opened up on two through-holes side inner wall close to each other
Spring is fixedly welded on inner wall.
The support device of present constructing tunnel is preferable to the face initial stage support effect in common landform tunnel, but the
Three be that rich water fine sand layer chance water easily softens, and is easy to lose bearing capacity, leads to tunnel deformation, and third system rich water thin silt
Substrate soft rock phenomenon is easy to damage initial stage support device, leads to the generation of tunnel cave phenomenon, influences the progress of construction,
The difficulty and risk of construction are increased, we have proposed one kind thus is used just based on third system rich water fine sand layer constructing tunnel
Phase support device.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides one kind is used just based on third system rich water fine sand layer constructing tunnel
Phase support device has the advantages of flexible fastening and dredging protection, it is existing to solve third system rich water thin silt substrate soft rock
As being easy to damage to support device, leads to the generation of tunnel cave phenomenon, influence the progress of construction, increase the difficulty of construction
The problem of degree and risk.
(2) technical solution
To realize above-mentioned technical problem, it is based on third system rich water fine sand layer constructing tunnel the present invention provides such a
It is fixedly connected with interior shield and outer shield, the interior shield respectively with the top of initial stage support device, including bottom plate, the bottom plate
It is fixedly connected between outer shield and inhibits deformation mechanism, be respectively fixedly connected with the between the interior shield inner wall from the bottom up
One supporting rod and second support bar, the both sides at the top of the first support bar have been respectively fixedly connected with head rod and second and have connected
The both sides of second support bar bottom are fixedly connected at the top of extension bar, the head rod and the second connecting rod, and first connects
Extension bar, which is intersected with the middle part of the second connecting rod by shaft, to be flexibly connected, and flexible fastening machine is provided on the outside of the outer shield
Structure, the interior shield are provided with dredging protection mechanism with outer shield.
Preferably, the inhibition deformation mechanism includes reinforced column, and fixed plate is fixedly connected at the top of the reinforced column,
The inside of outer shield is fixedly connected at the top of the fixed plate, the bottom of the reinforced column is fixedly connected with securing plate, described
The both sides of securing plate have been respectively fixedly connected with the first fixed link and the second fixed link, first fixed link and the second fixed link
Bottom, which is respectively fixedly connected in the middle part of the outside of interior shield, the securing plate bottom, is fixedly connected with elastomeric spring, the bullet
The bottom of property spring is fixedly connected in the outside of interior shield.
Preferably, the flexible retention mechanism includes to be opened in perforative mounting hole on the outside of outer shield, the mounting hole
Internal activity be plugged with threaded rod, the bottom thread of the screw thread rod outer surface is socketed with fixing nut, the fixing nut
Top and outer shield interior side contacts, the top of the threaded rod passes through mounting hole and extends to the outside of outer shield, described
The middle part movable sleeve of screw thread rod outer surface is connected to stiffening ring, and flexible pipe, the flexibility are fixedly connected at the top of the stiffening ring
The outer surface of pipe is inlaid with the first flexibility bar and the second flexibility bar respectively, and passes through in the middle part of the first flexibility bar and the second flexibility bar
Shaft intersects flexible connection, is fixedly connected with flexible section at the top of the flexible pipe, the outer surface of the threaded rod is fixedly attached
There is half round block, trapezoid block is fixedly connected at the top of the threaded rod, half round block is located at the lower section of trapezoid block, described trapezoidal
Circular arc block is fixedly connected at the top of block, the outer surface of the circular arc block is fixedly connected with corner block.
Preferably, the quantity of the flexible section is six, and six flexible sections are fixedly connected on flexibility with equidistant
The top of pipe, is fixedly connected on the outside of the flexible section jagged, and burr rotates to be cross, and the length of burr is one li
Meter, it is fixedly connected with arc block at the top of the flexible section.
Preferably, the dredging protection mechanism includes mounting plate, and the bottom of the mounting plate is fixedly connected in interior shield
Outside, the both sides at the top of the mounting plate have been movably connected with first annular piece and the second ring block by shaft, described
Both sides at the top of mounting plate offer holding tank, and two holding tanks are located at first annular piece and the second ring block
The inner bottom wall of underface, the holding tank is fixedly connected with spring washer, and the first annular piece of top is opposite with the second ring block
Side is fixedly connected with locating piece, and the second ring block top offers location hole with first annular piece of opposite side, institute
It states location hole to be adapted with locating piece, the top movable in the first annular piece of outside is connected with protective ring, second annular
Top on the outside of block offers limit hole, and the protective ring is plugged on far from first annular piece of side activity in limit hole
Portion has been fixedly connected with protective pad, described first annular piece and the second ring on the inside of described first annular piece and the second ring block
Internal activity between shape block is plugged with dredging pipe, the outer surface of the dredging pipe and the interior side contacts of protective pad, and described first
Middle part on the outside of ring block and the second ring block is connected with the first adjusting rod, and the bottom activity of first adjusting rod connects
It is connected to the second adjusting rod, the bottom of second adjusting rod and the top movable of mounting plate connect, on the right side of first adjusting rod
Middle part be fixedly connected with adjustment spring, the bottom of the adjustment spring is fixedly connected on the top of mounting plate, the outer shield
Inside be inlaid with soakaway trench, the bottom of the soakaway trench is fixedly connected with connection water pipe, the bottom of the connection water pipe with dredge
Siphunculus is fixedly connected by three-way connection, and filter screen is fixedly connected between the infiltration inside pipe wall.
Preferably, reinforcing plate is fixedly connected on the outside of the outer shield, side of the reinforcing plate far from outer shield is solid
Surely it is connected with non-slipping block.
(3) advantageous effect
The present invention provides one kind being based on third system rich water fine sand layer constructing tunnel initial stage support device, has following
Advantageous effect：
1, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, by the basis of interior shield
The improvement for increasing outer shield improves holding for tunnel tunnel face support when third system rich water fine sand layer is met water and easily softened
Power is carried, double layer support carrying avoids initial stage support device from being destroyed.
2, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, by inhibiting deformation mechanism
It improves, elastomeric spring is compressed when outer shield is larger by bearing capacity while supporting fixed to outer shield, on face
Ponding discharge after so that outer shield restore, improve the effect of support.
3, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, by dredging changing for protection mechanism
Into the ponding on face can be expelled to outside tunnel, substantially reduce the water pressure of face, sandy-silt seepage obtains preferably
Control avoids the problem that third system rich water fine sand layer is met water and easily softened, and efficiently solves tunnel and easily cave in and dash forward the feelings gushed
Condition ensure that the integrally-built safety of the stability of face and tunnel, meet the requirement of Tunnel Construction Schedule, reduce
The risk of tunnel construction.
4, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, by first annular piece and the
Dredging pipe is effectively carried out arrangement constraint by the improvement of second ring block, is met and is realized and compares conjunction on the basis of dredging pipe is firm
The arrangement of reason.
5, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, pass through first annular piece and second
Increased protective pad on the inside of ring block, dredging pipe can be expanded in heated state, can be reduced in the state of being cooled, protective pad
It is elastic preferable, it is preferable to the fixed effect of dredging pipe, avoid the position installed to dredging pipe from making a difference.
6, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, pass through the first adjusting rod, second
The improvement of adjusting rod and adjustment spring facilitates and pulls first annular piece and the second ring block outward, pacifies to dredging pipe
The inside that post-positioning block is plugged on location hole is unclamped in dress arrangement, is ensured to the fixed effect of dredging pipe.
7, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, pass through changing for flexible retention mechanism
Into, enhance the grasp between outer shield and tunnel tunnel face, increase outer shield carrying pulling force so that outside
Shield and rock face it is closer.
8, it should be scratched by the improvement of flexible section based on third system rich water fine sand layer constructing tunnel initial stage support device
A property stress is easy to happen deformation, increase with the contact area inside face, avoid outer shield and be subjected to displacement.
9, it should be based on third system rich water fine sand layer constructing tunnel initial stage support device, by solid at the top of trapezoid block
Surely the setting of connection circular arc block facilitates flexible retention mechanism being inserted into aperture after face drills out suitable aperture
Inside, it is more time saving and laborsaving.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is that the present invention inhibits deformation mechanism structure schematic diagram；
Fig. 3 is partial enlarged view at the A of structure of the invention Fig. 1；
Fig. 4 is partial enlarged view at the B of structure of the invention Fig. 1.
In figure：1 bottom plate, shield, 3 outer shields, 4 inhibit deformation mechanisms, 401 reinforced columns, 402 fixed plates, 403 to reinforce in 2
Plate, 404 first fixed links, 405 second fixed links, 406 elastomeric springs, 5 first support bars, 6 head rods, 7 second connections
Bar, 8 second support bars, 9 flexible retention mechanisms, 901 mounting holes, 902 threaded rods, 903 fixing nuts, 904 stiffening rings, 905 are scratched
Property pipe, 906 first flexibility bars, 907 second flexibility bars, 908 flexible sections, 909 burrs, 910 arc blocks, 911 half round blocks, 912 ladder
Shape block, 913 circular arc blocks, 914 corner blocks, 10 dredging protection mechanisms, 1001 mounting plates, 1002 first annular pieces, 1,003 second rings
Shape block, 1004 holding tanks, 1005 spring washers, 1006 locating pieces, 1007 location holes, 1008 protective rings, 1009 limit holes, 1010 protection
Pad, 1011 dredging pipes, 1,012 first adjusting rods, 1,013 second adjusting rods, 1014 adjustment springs, 1015 soakaway trench, 1016 connections
Water pipe, 1017 filter screens, 11 reinforcing plates, 12 non-slipping blocks.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 4 are please referred to Fig.1, one kind being based on third system rich water fine sand layer constructing tunnel initial stage support device, including bottom plate
1, the top of bottom plate 1 is fixedly connected with interior shield 2 and outer shield 3 respectively, by increasing outer shield on the basis of interior shield 2
3 improvement improves the bearing capacity of tunnel tunnel face support, bilayer branch when third system rich water fine sand layer is met water and easily softened
Support carrying avoids initial stage support device from being destroyed, and is fixedly connected between interior shield 2 and outer shield 3 and inhibits deformation mechanism 4, suppression
Deformation mechanism 4 processed includes reinforced column 401, and the top of reinforced column 401 is fixedly connected with fixed plate 402, the top of fixed plate 402
It is fixedly connected on the inside of outer shield 3, the bottom of reinforced column 401 is fixedly connected with securing plate 403, the both sides point of securing plate 403
It is not fixedly connected with the first fixed link 404 and the second fixed link 405, the bottom point of the first fixed link 404 and the second fixed link 405
It is not fixedly connected in the outside of interior shield 2, when mounted, fixed plate 402 can be mounted on outer shield 3 by fixed screw
Inside, after interior shield 2 is fixed, in the inside of interior shield 2 by fixed screw by the first fixed link 404 and the second fixed link
405 are fixed, and elastomeric spring 406 is fixedly connected in the middle part of 403 bottom of securing plate, and the bottom of elastomeric spring 406, which is fixed, to be connected
It is connected on the outside of interior shield 2, by the improvement to inhibiting deformation mechanism 4, elastomeric spring while supporting fixed to outer shield 3
406 compress when outer shield 3 is larger by bearing capacity, after the ponding discharge on face so that outer shield 3 restores, and improves
The effect of support.
It has been respectively fixedly connected with first support bar 5 and second support bar 8 between 2 inner wall of interior shield from the bottom up, first
The both sides at 5 top of strut have been respectively fixedly connected with head rod 6 and the second connecting rod 7, head rod 6 and the second connecting rod
7 top is fixedly connected on the both sides of 8 bottom of second support bar, and the middle part of head rod 6 and the second connecting rod 7 is by turning
Axis intersects flexible connection, and the outside of outer shield 3 is provided with flexible retention mechanism 9, and flexible retention mechanism 9 includes to be opened in outer shield
The 3 perforative mounting hole 901 in outside of cover, the internal activity of mounting hole 901 are plugged with threaded rod 902, the bottom of 902 outer surface of threaded rod
Portion's screw thread is socketed with fixing nut 903, the interior side contacts at the top and outer shield 3 of fixing nut 903, the top of threaded rod 902
Across mounting hole 901 and the outside of outer shield 3 is extended to, the middle part movable sleeve of 902 outer surface of threaded rod is connected to stiffening ring 904,
The top of stiffening ring 904 is fixedly connected with flexible pipe 905, and the outer surface of flexible pipe 905 is inlaid with 906 He of the first flexibility bar respectively
Second flexibility bar 907, and the first flexibility bar 906 is intersected by shaft with the middle part of the second flexibility bar 907 and is flexibly connected, flexible pipe
905 top is fixedly connected with flexible section 908, and by the improvement of flexible section 908,908 stress of flexible section is easy to happen deformation, increases
It is big with the contact area inside face, avoid outer shield 3 and be subjected to displacement, the quantity of flexible section 908 is six, and six
With equidistant top for being fixedly connected on flexible pipe 905, the outside of flexible section 908 is fixedly connected jagged flexible section 908
909, and burr 909 rotates to be cross, the length of burr 909 is one centimetre, the top of flexible section 908 is fixedly connected with arc
Shape block 910, when tightening fixing nut 903, can make flexible section 908 that shape occur outward by the setting of arc block 910
Becoming, the outer surface fixing sleeve of threaded rod 902 is connected to semicircle block 911, and the top of threaded rod 902 is fixedly connected with trapezoid block 912, and half
Round block 911 is located at the lower section of trapezoid block 912, and the top of trapezoid block 912 is fixedly connected with circular arc block 913, by trapezoid block 912
Top be fixedly connected with the setting of circular arc block 913 and facilitated flexible retention mechanism 9 after face drills out suitable aperture
It is inserted into the inside in aperture, more time saving and laborsaving, the outer surface of circular arc block 913 is fixedly connected with corner block 914, by scratching
Property retention mechanism 9 improvement, enhance the grasp between outer shield 3 and tunnel tunnel face, increase outer shield 3 carrying drawing
Power, so that outer shield 3 and rock face is closer.
Interior shield 2 is provided with dredging protection mechanism 10 with outer shield 3, and dredging protection mechanism 10 includes mounting plate 1001,
The bottom of mounting plate 1001 is fixedly connected in the outside of interior shield 2, and the both sides at 1001 top of mounting plate pass through shaft activity respectively
It is connected with first annular piece 1002 and the second ring block 1003, passes through changing to first annular piece 1002 and the second ring block 1003
Into dredging pipe 1011 is effectively carried out arrangement constraint, meets and realizes relatively more rational on the basis of dredging pipe 1011 is firm
The both sides of arrangement, 1001 top of mounting plate offer holding tank 1004, and two holding tanks 1004 are located at first annular piece
1002 and second ring block 1003 underface, the inner bottom wall of holding tank 1004 is fixedly connected with spring washer 1005, first annular piece
The 1002 tops side opposite with the second ring block 1003 are fixedly connected with locating piece 1006,1003 top of the second ring block and the
The opposite side of one ring block 1002 offers location hole 1007, and location hole 1007 is adapted with locating piece 1006, first annular
The top movable in 1002 outside of block is connected with protective ring 1008, and the top in 1003 outside of the second ring block offers limit hole
1009, protective ring 1008 is plugged on the inside of limit hole 1009 far from first annular piece 1002 of side activity, first annular piece
1002 and second the inside of ring block 1003 be fixedly connected with protective pad 1010, pass through first annular piece 1002 and the second annular
The 1003 increased protective pad 1010 in inside of block, dredging pipe 1011 can be expanded in heated state, can be reduced in the state of being cooled,
The elasticity of protective pad 1010 is preferably, preferable to 1011 fixed effect of dredging pipe, avoids the position hair installed to dredging pipe 1011
Raw to influence, the internal activity between first annular piece 1002 and the second ring block 1003 is plugged with dredging pipe 1011, dredging pipe
The middle part of the interior side contacts of 1011 outer surface and protective pad 1010, first annular piece 1002 and the outside of the second ring block 1003 is equal
It is connected with the first adjusting rod 1012, the bottom of the first adjusting rod 1012 is connected with the second adjusting rod 1013, and second adjusts
The bottom of pole 1013 is connect with the top movable of mounting plate 1001, and the middle part on 1012 right side of the first adjusting rod is fixedly connected with tune
Spring 1014 is saved, the bottom of adjustment spring 1014 is fixedly connected on the top of mounting plate 1001, passes through the first adjusting rod 1012, the
The improvement of two adjusting rods 1013 and adjustment spring 1014 facilitates first annular piece 1002 and 1003 outside layback of the second ring block
It is dynamic, installation arrangement is carried out to dredging pipe 1011, unclamps the inside that post-positioning block 1006 is plugged on location hole 1007, is ensured to dredging
The inside of 1011 fixed effect of pipe, outer shield 3 is inlaid with soakaway trench 1015, and the bottom of soakaway trench 1015 is fixedly connected with connection
Water pipe 1016, connection water pipe 1016 bottom be fixedly connected by three-way connection with dredging pipe 1011,1015 inner wall of soakaway trench it
Between be fixedly connected with filter screen 1017, by dredge protection mechanism 10 improvement, the ponding on face can be expelled to tunnel
Outside road, the water pressure of face is substantially reduced, sandy-silt seepage is preferably controlled, and third system rich water fine sand layer is avoided to meet water
Easily softening the problem of, efficiently solve tunnel and easily cave in and dash forward the case where gushing, ensure that the stability of face and tunnel are whole
The safety of body structure meets the requirement of Tunnel Construction Schedule, reduces the risk of tunnel construction, and the outside of outer shield 3 is fixed
It is connected with reinforcing plate 11, side of the reinforcing plate 11 far from outer shield 3 is fixedly connected with non-slipping block 12.
Operation principle：When carrying out constructing tunnel to third system rich water fine sand layer, need to carry out curtain note in construction surface
Slurry is reinforced, and is then carried out excavation operation, after tunnelling is good, suitable aperture will be drilled out on face, by flexible retention mechanism 9
It is inserted into the inside in aperture, the mounting hole 901 on outer shield 3 is sleeved on threaded rod 902,903 screw thread of fixing nut is socketed
On threaded rod 902, fixing nut 903 is constantly tightened so that half round block 911 and trapezoid block 912 constantly move forward, will
Flexible section 908 struts deform upon outward so that half round block 911 is located at the inside of flexible pipe 905, and trapezoid block 912 is located at flexibility
The inside of item 908 so that outer shield 3 is fixed, in the presence of having ponding on face, ponding can be from 1015 row of soakaway trench
Enter into dredging pipe 1011, the outside in tunnel is then expelled to from dredging pipe 1011, facilitates the discharge of ponding.
In conclusion third system rich water fine sand layer constructing tunnel initial stage support device should be based on, by interior shield 2
On the basis of increase the improvement of outer shield 3, when third system rich water fine sand layer is met water and easily softened, improve tunnel tunnel face
The bearing capacity of support, double layer support carrying avoid initial stage support device from being destroyed, by the improvement to inhibiting deformation mechanism 4,
Elastomeric spring 406 is compressed when outer shield 3 is larger by bearing capacity while supporting fixed to outer shield 3, on face
Ponding discharge after so that outer shield 3 restore, improve the effect of support.
By being fixedly connected with the setting of circular arc block 913 at the top of trapezoid block 912, suitable aperture is drilled out in face
Afterwards, the inside that flexible retention mechanism 9 is inserted into aperture is facilitated, it is more time saving and laborsaving, pass through flexible retention mechanism 9
Improve, enhance the grasp between outer shield 3 and tunnel tunnel face, increase outer shield 3 carrying pulling force, so as to so that
Outer shield 3 and rock face it is closer, by the improvement to first annular piece 1002 and the second ring block 1003, effectively
Dredging pipe 1011 carries out to arrangement constraint, meet and realize relatively more rational arrangement on the basis of dredging pipe 1011 is firm, lead to
Cross first annular piece 1002 and the 1003 increased protective pad 1010 in inside of the second ring block, dredging pipe 1011 is in heated state meeting
Expansion, can reduce in the state of being cooled, and the elasticity of protective pad 1010 is preferably, preferable to 1011 fixed effect of dredging pipe, keeps away
Exempt to make a difference to the position that dredging pipe 1011 is installed.
By the improvement of the first adjusting rod 1012, the second adjusting rod 1013 and adjustment spring 1014, facilitating will be first annular
Block 1002 and the second ring block 1003 pull outward, and installation arrangement is carried out to dredging pipe 1011, unclamp post-positioning block 1006 and insert
It is connected on the inside of location hole 1007, ensures to 1011 fixed effect of dredging pipe, it, can be with by dredging the improvement of protection mechanism 10
Ponding on face is expelled to outside tunnel, the water pressure of face is substantially reduced, sandy-silt seepage is preferably controlled, and is kept away
Exempt from third system rich water fine sand layer and meet the problem of water easily softens, efficiently solves tunnel and easily cave in and prominent the case where gushing, guarantee
The integrally-built safety of stability and tunnel of face, meets the requirement of Tunnel Construction Schedule, reduces tunnel and apply
Work risk.
The configuration of the present invention is simple, reasonable design and easy to operate, solve third system rich water thin silt substrate soft rock
Phenomenon is easy to damage support device, leads to the generation of tunnel cave phenomenon, influences the progress of construction, increases construction
The problem of difficulty and risk.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. one kind being based on third system rich water fine sand layer constructing tunnel initial stage support device, including bottom plate (1), feature exists
In：The top of the bottom plate (1) is fixedly connected with interior shield (2) and outer shield (3), the interior shield (2) and outer shield respectively
(3) it is fixedly connected between and inhibits deformation mechanism (4), be respectively fixedly connected with from the bottom up between interior shield (2) inner wall
First support bar (5) and second support bar (8), the both sides at the top of the first support bar (5) have been respectively fixedly connected with the first company
Extension bar (6) and the second connecting rod (7) are fixedly connected on second at the top of the head rod (6) and the second connecting rod (7)
The both sides of strut (8) bottom, and head rod (6) is intersected by shaft with the middle part of the second connecting rod (7) and is flexibly connected, institute
It states and is provided with flexible retention mechanism (9) on the outside of outer shield (3), the interior shield (2) is provided with dredging protection with outer shield (3)
Mechanism (10).
2. one kind according to claim 1 is based on third system rich water fine sand layer constructing tunnel initial stage support device,
It is characterized in that：The inhibition deformation mechanism (4) includes reinforced column (401), is fixedly connected at the top of the reinforced column (401)
Fixed plate (402) is fixedly connected on the inside of outer shield (3) at the top of the fixed plate (402), the reinforced column (401)
Bottom is fixedly connected with securing plate (403), and the both sides of the securing plate (403) have been respectively fixedly connected with the first fixed link (404)
With the second fixed link (405), including the bottom of first fixed link (404) and the second fixed link (405) is respectively fixedly connected with
The outside of shield (2) is fixedly connected with elastomeric spring (406), the elastomeric spring in the middle part of securing plate (403) bottom
(406) bottom is fixedly connected with the outside in interior shield (2).
3. one kind according to claim 2 is based on third system rich water fine sand layer constructing tunnel initial stage support device,
It is characterized in that：The flexibility retention mechanism (9) includes to be opened in perforative mounting hole (901) on the outside of outer shield (3), described solid
The internal activity for determining hole (901) is plugged with threaded rod (902), and the bottom thread of threaded rod (902) outer surface is socketed with admittedly
Determine nut (903), the interior side contacts at the top and outer shield (3) of the fixing nut (903), the top of the threaded rod (902)
Portion passes through mounting hole (901) and extends to the outside of outer shield (3), the middle part pivot bush unit of threaded rod (902) outer surface
Have stiffening ring (904), be fixedly connected with flexible pipe (905) at the top of the stiffening ring (904), the flexible pipe (905) it is outer
Surface is inlaid with the first flexibility bar (906) and the second flexibility bar (907), and the first flexibility bar (906) and the second flexibility bar respectively
(907) middle part is intersected by shaft to be flexibly connected, and flexible section (908), institute are fixedly connected at the top of the flexible pipe (905)
The outer surface fixing sleeve for stating threaded rod (902) is connected to semicircle block (911), and ladder is fixedly connected at the top of the threaded rod (902)
Shape block (912), half round block (911) are located at the lower section of trapezoid block (912), are fixedly connected at the top of the trapezoid block (912)
There are circular arc block (913), the outer surface of the circular arc block (913) to be fixedly connected with corner block (914).
4. one kind according to claim 3 is based on third system rich water fine sand layer constructing tunnel initial stage support device,
It is characterized in that：The quantity of the flexible section (908) is six, and six flexible sections (908) are fixedly connected on equidistant
The top of flexible pipe (905) is fixedly connected jagged (909) on the outside of the flexible section (908), and the rotation of burr (909)
Length for cross, burr (909) is one centimetre, and arc block (910) is fixedly connected at the top of the flexible section (908).
5. one kind according to claim 4 is based on third system rich water fine sand layer constructing tunnel initial stage support device,
It is characterized in that：The dredging protection mechanism (10) includes mounting plate (1001), and the bottom of the mounting plate (1001), which is fixed, to be connected
It is connected on the outside of interior shield (2), the both sides at the top of the mounting plate (1001) have been movably connected with first annular by shaft
Block (1002) and the second ring block (1003), the both sides at the top of the mounting plate (1001) offer holding tank (1004), and two
A holding tank (1004) is located at the underface of first annular piece (1002) and the second ring block (1003), the receiving
The inner bottom wall of slot (1004) is fixedly connected with spring washer (1005), first annular piece (1002) top and the second ring block
(1003) opposite side is fixedly connected with locating piece (1006), at the top of second ring block (1003) with first annular piece
(1002) opposite side offers location hole (1007), and the location hole (1007) is adapted with locating piece (1006), described
Top movable on the outside of first annular piece (1002) is connected with protective ring (1008), the top on the outside of second ring block (1003)
Portion offers limit hole (1009), and side activity of the protective ring (1008) far from first annular piece (1002) is plugged on limit
The inside in hole (1009) has been fixedly connected with protective pad on the inside of first annular piece (1002) and the second ring block (1003)
(1010), the internal activity between first annular piece (1002) and the second ring block (1003) is plugged with dredging pipe
(1011), the interior side contacts of the outer surface and protective pad (1010) of the dredging pipe (1011), it is described first annular piece (1002)
It is connected with the first adjusting rod (1012), first adjusting rod (1012) with the middle part on the outside of the second ring block (1003)
Bottom be connected with the second adjusting rod (1013), the top of the bottom and mounting plate (1001) of second adjusting rod (1013)
Portion is flexibly connected, and the middle part on the right side of first adjusting rod (1012) is fixedly connected with adjustment spring (1014), the adjusting bullet
The bottom of spring (1014) is fixedly connected on the top of mounting plate (1001), and the inside of the outer shield (3) is inlaid with soakaway trench
(1015), the bottom of the soakaway trench (1015) is fixedly connected with connection water pipe (1016), the bottom of the connection water pipe (1016)
Portion is fixedly connected with dredging pipe (1011) by three-way connection, and filter screen is fixedly connected between soakaway trench (1015) inner wall
(1017)。
6. one kind according to claim 5 is based on third system rich water fine sand layer constructing tunnel initial stage support device,
It is characterized in that：Reinforcing plate (11) is fixedly connected on the outside of the outer shield (3), the reinforcing plate (11) is far from outer shield (3)
Side be fixedly connected with non-slipping block (12).
Priority Applications (1)
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| CN201810457294.9A CN108643944B (en) | 2018-05-14 | 2018-05-14 | One kind being based on third system rich water fine sand layer constructing tunnel initial stage support device |
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| CN201810457294.9A CN108643944B (en) | 2018-05-14 | 2018-05-14 | One kind being based on third system rich water fine sand layer constructing tunnel initial stage support device |
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Cited By (1)
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| CN109595017A (en) * | 2018-11-23 | 2019-04-09 | 贵州大学 | A kind of tunnel top support device of the constructing tunnel with defencive function |
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| Publication number | Publication date |
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| CN108643944B (en) | 2019-12-03 |
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Effective date of registration: 20191113 Address after: 225400 west side of Daiwang Road, Taixing high tech Industrial Development Zone, Jiangsu Province Applicant after: Jiangsu yuan Qing Environmental Protection Technology Co., Ltd. Address before: 230601 Anhui road University, 292 Ziyun Road, Hefei economic and Technological Development Zone, Anhui Applicant before: Zhang Guiyong |