CN208702425U - Slope protection structure and tunnel advanced support structure - Google Patents
Slope protection structure and tunnel advanced support structure Download PDFInfo
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- CN208702425U CN208702425U CN201821548634.0U CN201821548634U CN208702425U CN 208702425 U CN208702425 U CN 208702425U CN 201821548634 U CN201821548634 U CN 201821548634U CN 208702425 U CN208702425 U CN 208702425U
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- anchor pole
- side slope
- slope
- concrete layer
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Abstract
The utility model provides a kind of slope protection structure and tunnel advanced support structure, belongs to technical field of tunnel construction.Wherein, the first line of defence of first protective net composition side slope protection, anchor pole is embedded in the first embedded hole and the second embedded hole and carries out slip casting to anchor pole, for more broken rock side slope, since slurries have mobility, it can be flowed into the rock mass gap near anchor pole, improve the overall stability of rock mass.Second protective net and anchor pole are connected far from one end of side slope, constitute the second defence line of side slope protection, in addition, anchor pole is fixed on the first side slope, the first concrete layer and the second concrete layer, stability is preferable, can prevent the second protective net from falling off.The stability for enhancing its slope rock mass itself using bolt grouting, in addition uses dual-protection structure, even if rock mass fragmentation forms broken loose rock blocks, will not fall, can guarantee slope stability.
Description
Technical field
The utility model relates to technical field of tunnel construction, super in particular to a kind of slope protection structure and tunnel
Preceding supporting construction.
Background technique
Currently, expressway construction is gradually shifted to western mountainous areas, mountainous area highway constructing tunnel is more and more, side
Slope is often colluvial clay, and Rock Engineering Properties are poor, and needing side slope to carry out protective treatment just can be carried out tunnel construction.
Traditional slope protection structure fails the stability for changing slope rock mass itself, arranges only with whitewashing protection
It applies, side slope is crushed loose rock blocks and is easy to fall, it is difficult to guarantee slope stability.
Utility model content
One of the purpose of this utility model is the provision of a kind of slope protection structure, it is intended to improve existing side slope protection
The stability problem of structure prevents broken loose rock blocks to be detached from side slope and falls.
The two of the purpose of this utility model are the provision of a kind of tunnel advanced support structure, it is intended to improve tunnel slope
Stability guarantees the safety of tunnel portal construction.
The three of the purpose of this utility model are the provision of a kind of tunnel slope construction method, it is desirable to provide one kind can mention
The method of High Slope Protection ability.
For one of the purpose of this utility model, the utility model the following technical schemes are provided:
A kind of slope protection structure, including side slope, the first concrete layer, anchor pole and the second concrete layer.
Wherein, the side slope opens up the first embedded hole, and the surface of the side slope is equipped with the first protective net.
First concrete layer is layed in the surface of first protective net, and first concrete layer offers and institute
State the second embedded hole that the first embedded hole is correspondingly arranged.
The anchor pole is embedded in first embedded hole and second embedded hole, and the anchor pole is far from the side slope
One end exposes to first concrete layer, and the anchor pole is connected with the second protective net, the anchor far from one end of the side slope
Bar have hollow slip casting cavity, between the outer wall of the anchor pole and the inner wall of first embedded hole, the outer wall of the anchor pole with
The first injecting cement paste is filled between the inner wall of second embedded hole and in the hollow slip casting cavity.
Second concrete layer fills between second protective net and first concrete layer.
Further, in an embodiment of the present invention, the anchor pole is arranged with far from one end of the side slope
Stop grouting plug, the outer wall of the stop grouting plug are abutted with the inner wall of second embedded hole, the inner wall of the stop grouting plug and the anchor pole
Outer wall abut.
Further, in an embodiment of the present invention, the surface of the anchor pole is provided with external screw thread, the anchor
Bar is provided with support division and locking part, the external screw thread screw thread company of the locking part and the anchor pole far from one end of the side slope
It connects, the locking part can be by rotating so that the support division is abutted with the surface of the side slope.
Further, in an embodiment of the present invention, first protective net is steel mesh.
Further, in an embodiment of the present invention, the grid aperture of the steel mesh is 20cm × 20cm.
For the two of the purpose of this utility model, the utility model the following technical schemes are provided:
A kind of tunnel advanced support structure, including slope protection structure above-mentioned, set arch skeleton, casing and set arch group
Part.
Wherein, the set arch skeleton is set to the excavation entrance in tunnel；
Described sleeve pipe is set to the surface with set arch skeleton.
The set arch component includes bed die, end mould and backform, and the bed die, end mould and backform are enclosed and pour sky
Chamber and set arch skeleton and described sleeve pipe pour in cavity described in being in, described to pour in cavity filled with concrete bodies.
Further, in an embodiment of the present invention, the set arch skeleton is by multiple spaced transverse directions
Steelframe is constituted, and is connected between the transverse direction steelframe by longitudinal connecting member.
Further, in an embodiment of the present invention, the spacing between the transverse direction steelframe is 60~
80cm。
It further, further include the first pipe canopy conduit in an embodiment of the present invention, during described sleeve pipe has
Cavity body, the first pipe canopy conduit is provided in the hollow cavity, and one end of the first pipe canopy conduit is embedded in the side
In slope, the second injecting cement paste is filled in described sleeve pipe and the first pipe canopy conduit.
Further, in an embodiment of the present invention, the side slope offers guide hole along tunnel excavation line,
The second pipe canopy conduit is buried in the guide hole, is filled with third injecting cement paste in the guide hole.
For the three of the purpose of this utility model, the utility model the following technical schemes are provided:
A kind of tunnel slope construction method, includes the following steps:
It determines top curve and when excavation height determines lower collar thread according to slope；
Staged and layered excavates face-upward slope from top to bottom, and wherein the first stage digs to interim hole face is designed, in conjunction with dark
Wide open digging is reserved into hole step, and second stage excavates rest part, forms face-upward slope；
It is laid with the first protective net on the surface of the face-upward slope, and forms first to the first protective net gunite concrete
Concrete layer；
To the face-upward slope drilling construction to form the drilling for burying anchor pole, the drilling is embedded in the anchor pole
The backward hollow slip casting chamber internal injection of anchor pole；
Second protective net is connect with the anchor pole far from one end of the side slope, and to first concrete layer and institute
Gunite concrete is stated between the second protective net to form the second concrete layer.
Further, in an embodiment of the present invention, the step of Xiang Suoshu the first protective net gunite concrete
Include:
Injection order is from the bottom to top, transversely to be moved repeatedly with S-shaped when gunite concrete.
Further, in an embodiment of the present invention, the hollow slip casting chamber internal injection of Xiang Suoshu anchor pole
Step specifically includes:
The opening that Grouting Pipe is inserted into the anchor pole is subjected to slip casting, until the slurries in the drilling overflow, at interval of pre-
If the time carries out walking around to benefit slurry into the drilling.
Further, cement and sand in an embodiment of the present invention, in the slurries of the Grouting Pipe injection
Weight ratio be 1: 1~1: 2, water: the weight ratio of cement be 0.38: 1~0.45: 1.
The beneficial effects of the utility model are: the slope protection structure that the utility model obtains by above-mentioned design, first
Protective net constitutes the first line of defence of side slope protection, and anchor pole is embedded in the first embedded hole and the second embedded hole and carries out to anchor pole
Slip casting, for more broken rock side slope, since slurries have mobility, the rock mass that can be flowed near anchor pole is empty
In gap, the overall stability of rock mass is improved.Second protective net and anchor pole are connected far from one end of side slope, constitute side slope protection
Second defence line, in addition, anchor pole is fixed on the first side slope, the first concrete layer and the second concrete layer, stability is preferable,
It can prevent the second protective net from falling off.Compared to existing technologies, which enhances its side using bolt grouting
The stability of slope rock mass itself, in addition uses dual-protection structure, even if rock mass fragmentation forms broken loose rock blocks, will not fall
It falls, can guarantee slope stability.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of slope protection structure provided by the embodiment of the utility model；
Fig. 2 is that a kind of anchor pole provided by the embodiment of the utility model buries schematic diagram；
Fig. 3 is the structural schematic diagram of another slope protection structure provided by the embodiment of the utility model；
Fig. 4 is a kind of structural schematic diagram of tunnel advanced support structure provided by the embodiment of the utility model；
Fig. 5 is a kind of structural schematic diagram of set arch skeleton provided by the embodiment of the utility model.
Icon: 10- slope protection structure；100- side slope；The first embedded hole of 110-；The first protective net of 130-；150- conduit
Hole；The first concrete layer of 300-；The second embedded hole of 310-；500- anchor pole；The second protective net of 510-；The hollow slip casting cavity of 530-；
The first injecting cement paste of 550-；570- support division；The locking part 590-；The second concrete layer of 700-；20- tunnel advanced support structure；
200- set arch skeleton；210- transverse direction steelframe；230- longitudinal connecting member；400- casing；410- the first pipe canopy conduit；430- second is managed
Canopy conduit；The second injecting cement paste of 450-；470- third injecting cement paste；600- set arch component.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.
Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the utility model of protection is sought, but is merely representative of the selected embodiment of the utility model.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Mode is fallen within the protection scope of the utility model.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Equipment or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
It is connected directly, the mutual of connection inside two elements or two elements can also be can be indirectly connected through an intermediary
Interactively；It can be electric connection, be also possible to be electrically connected.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
Embodiment
Fig. 1,2 are please referred to, the present embodiment provides a kind of slope protection structures 10, including side slope 100, the first concrete layer
300, anchor pole 500 and the second concrete layer 700.
Wherein, side slope 100 opens up the first embedded hole 110, and the surface of side slope 100 is equipped with the first protective net 130.
First concrete layer 300 is layed in the surface of the first protective net 130, and the first concrete layer 300 offers and first
The second embedded hole 310 that embedded hole 110 is correspondingly arranged.
Anchor pole 500 is embedded in the first embedded hole 110 and the second embedded hole 310, the one end of anchor pole 500 far from side slope 100
The first concrete layer 300 is exposed to, anchor pole 500 is connected with the second protective net 510 far from one end of side slope 100, and anchor pole 500 has
Hollow slip casting cavity 530, between the outer wall of anchor pole 500 and the inner wall of the first embedded hole 110, the outer wall of anchor pole 500 and second pre-
The first injecting cement paste 550 is filled between the inner wall of buried via hole 310 and in hollow slip casting cavity 530.
Second concrete layer 700 fills between the second protective net 510 and the first concrete layer 300.
In the present embodiment, the first protective net 130 constitutes the first line of defence that side slope 100 is protected, and anchor pole 500 is embedded in the
In one embedded hole 110 and the second embedded hole 310 and slip casting is carried out to anchor pole 500, for more broken rock side slope 100
Speech can flow into the rock mass gap near anchor pole 500 since slurries have mobility, improve the intensity and entirety of rock mass
Stability.Second protective net 510 is connect with anchor pole 500 far from one end of side slope 100, constitutes the second that side slope 100 is protected
Defence line, in addition, anchor pole 500 is fixed in side slope 100, the first concrete layer 300 and the second concrete layer 700, stability
Preferably, it can prevent the second protective net 510 from falling off.
The slope protection structure 10 of the present embodiment enhances the steady of its 100 rock mass of side slope itself using 500 grouting mode of anchor pole
It is qualitative, dual-protection structure is in addition used, even if rock mass fragmentation forms broken loose rock blocks, will not fall, can guarantee side
100 stability of slope.
Specifically, in the present embodiment, the first protective net 130 can be soft protecting net, such as wire rope net, wherein steel
Cord net is formed by braided steel wire.
In the present embodiment, side slope 100 and the second concrete layer 700 open up respectively by the way of drilling machine mechanical hole building
One embedded hole 110 and the second embedded hole 310, the first embedded hole 110 and the second embedded hole 310 are correspondingly arranged, and anchor pole 500 is embedded in
In first embedded hole 110 and the second embedded hole 310.
Specifically, in the present embodiment, anchor pole 500 has hollow slip casting cavity 530.When in use, with grouting mode to
Slip casting in hollow slip casting cavity 530 forms the first injecting cement paste so that hollow slip casting cavity 530 fills slurries after slurries final set
550。
It should be noted that during the slip casting, can synchronize to the outer wall of anchor pole 500 and the first embedded hole 110 and
In gap between the inner wall of second embedded hole 310 carry out slip casting, i.e., slurries by hollow slip casting cavity 530 bottom end outflow from
The bottom hole of first embedded hole 110 is gradually accumulated to the top of the second embedded hole 310, and final first embedded hole 110 and second is pre-buried
The first injecting cement paste 550 is filled in hole 310.
In the present embodiment, the outer diameter of anchor pole 500 is 20~30mm, and the anchor pole 500 of the outer diameter is reinforced relative to common
Its outer diameter of type anchor pole is smaller, primarily directed to the side slope 100 that Rock Engineering Properties are poor, is not easy to select the anchor pole of excessive outer diameter
500, reduce the disturbance to original side slope 100 to the greatest extent.
Optionally, in the present embodiment, the weight ratio of the cement in slurries and sand is 1: 1~1: 2, water: the weight of cement
Than being 0.38: 1~0.45: 1.The presetting period of the slurries of the ratio range is shorter, and the intensity after its final set is higher, in addition,
It also has preferable mobility and cohesiveness, can more fully penetrate into the gap between fragmented rock body, improve its globality,
Improve its rock mass stress condition.Wherein, cement grade, which is selected, is greater than PO32.5 or equal to grade ordinary portland cement.Sand then uses
Maximum particle diameter is less than the medium-fine sand of 2.5mm, and quality is hard, cleans.In addition, the strength grade of grouting cement mortar is greater than or waits
In 20MPa.Slip casting can select MZ-1 type grouting pump to cooperate the grout mixer slurrying of NJ-6 type using equipment.
Referring to Fig. 3, in order to improve the rock stability near anchor pole 500, in the present embodiment, the surface of anchor pole 500
It is provided with external screw thread, anchor pole 500 is provided with support division 570 and locking part 590, locking part 590 and anchor far from one end of side slope 100
The external screw thread of bar 500 is threadedly coupled, and locking part 590 can be by rotation so that the table of support division 570 and the second concrete layer 700
Face abuts.Locking part 590 is used for the rock mass near fixing anchor bar 500 for fixing support division 570, support division 570, particularly with
Rock mass is more broken, the poor side slope 100 of engineering properties, and support division 570 can play reinforcing and limit the further fragmentation of rock mass
Change.Optionally, locking part 590 is nut, and support division 570 is disk.
In other embodiments, support division 570 and locking part 590 can also be embedded in the second concrete layer 700.
Terminating rear slurry in slip casting needs certain time pre-hardening, and slurries are missed in order to prevent.In the present embodiment, anchor
Bar 500 is arranged with stop grouting plug far from one end of side slope 100, and the outer wall of stop grouting plug is abutted with the inner wall of the second embedded hole 310, only starched
The inner wall of plug is abutted with the outer wall of anchor pole 500.On the one hand stop grouting plug can prevent slurries from leaking, especially close horizontal in anchor pole 500
When direction is arranged, for example, the axis of anchor pole 500 and horizontal plane angle, at 0~10 °, setting stop grouting plug can prevent slurries
Leakage is spilt before initial set.In addition, the setting of stop grouting plug can also prevent external disturbance, avoid the position of anchor pole 500 deform or
The final position of anchor pole 500 is deviated with initial position.
Specifically, in the present embodiment, the second protective net 510 can be steel mesh, and steel mesh and anchor pole 500 are far from side slope
100 one end welding.Multiple anchor poles 500 are set in side slope 100, then weld to form side slope with one end of steel mesh and anchor pole 500
100 protection second defence lines, can greatly improve the stability of side slope 100.Optionally, the grid aperture of steel mesh be 20cm ×
20cm.The grid aperture can limit block stone of the partial size greater than 20cm and fall.
In the present embodiment, 300 surface dabbing of the first concrete layer is handled, and is conducive to improve 300 He of the first concrete layer
Stability between second concrete layer 700.The time of dabbing processing should control before 300 initial set of the first concrete layer.
The second protective net 510 and the second concrete layer 700 of rainwater excessive erosion slope foot in order to prevent, in the present embodiment
In, drain dyke is set at slope foot, for dredging surface water, prevents the lifting of slope foot water level or long-term ponding.
Referring to Fig. 4, the present embodiment separately provides a kind of tunnel advanced support structure 20, including slope protection structure 10, set
Encircle skeleton 200, casing 400 and set arch component 600.
Wherein, set arch skeleton 200 is set to the excavation entrance in tunnel.Casing 400 is set to the surface of set arch skeleton 200.
Set arch component 600 includes bed die, end mould and backform, bed die, end mould and backform be enclosed pour cavity and
Set arch skeleton 200, casing 400 are in and pour in cavity, pour in cavity filled with concrete bodies.
It needs to build advance support structure, in the present embodiment, slope protection structure to entrance construction before tunnel excavation
The rock mass of 10 side slopes 100 is protected, and guarantees construction safety.In addition, set arch skeleton 200 is set to the excavation entrance in tunnel,
Then casing 400 being set on its surface, casing 400 is used for subsequent pipe roof construction, and set arch component 600 is then used for pouring molding,
It is enclosed to pour and injects concrete in cavity to by bed die, end mould and backform when pouring.The coagulation local product is cast-in-place using C25
Concrete must control concrete slump within the scope of 120mm~160mm, and concreting speed is unsuitable too fast, prevent out
Now set encircles quick-fried mould phenomenon.
Referring to Fig. 5, in the present embodiment, set arch skeleton 200 is made of multiple spaced lateral steelframes 210, horizontal
It is connected to longitudinal connecting member 230 is passed through between steelframe 210.Optionally, the spacing between lateral steelframe 210 is 60~80cm,
Longitudinal connecting member 230 is reinforcing bar.
In the present embodiment, casing 400 has hollow cavity, is provided with the first pipe canopy conduit 410 in hollow cavity, and first
In one end insertion side slope 100 of pipe canopy conduit 410, the second injecting cement paste is filled in casing 400 and the first pipe canopy conduit 410
450.Specifically, the slurries of the second injecting cement paste 450 are neat slurry by ZJ-400 high-speed pulping machine mixing, injecting paste material.Construction
When, the slurries ratio of mud can be adjusted according to live slip casting effect.Specifically, the first pipe canopy conduit 410 uses 108~180mm
Steel pipe, one end is taper.
Casing 400 has hollow cavity, and convenient for the drilling of the first pipe canopy conduit 410, the first pipe canopy conduit 410 is embedded into side
Inside slope 100, then the rock mass near the first pipe canopy conduit 410 is further reinforced by way of slip casting, improves its stability, mention
For advance support, guarantee the safety of subsequent excavation construction.
With the digging excavation in tunnel, top plate unstability in order to prevent, in the present embodiment, side slope 100 is along tunnel excavation line
Guide hole 150 is offered, the second pipe canopy conduit 430 is buried in guide hole 150, is filled with third injecting cement paste in guide hole 150
470.Nearby rock mass is connected guide hole 150 by third injecting cement paste 470, and globality and intensity can be improved, in addition, the second pipe
Canopy conduit 430 can be equivalent to skeleton, be capable of the globality of large area raising top plate.Specifically, the slurries of third injecting cement paste 470
By ZJ-400 high-speed pulping machine mixing, injecting paste material is neat slurry.When construction, the slurries ratio of mud can be according to live slip casting effect
It is adjusted.Specifically, for the second pipe canopy conduit 430 using the steel pipe for using 70~90mm, one end is also taper.
The present embodiment also provides a kind of tunnel slope construction method, includes the following steps:
It determines top curve and when excavation height determines lower collar thread according to slope.
Staged and layered side slope 100 is excavated from top to bottom, and wherein the first stage digs to interim hole face is designed, in conjunction with dark
Wide open digging is reserved into hole step, and second stage excavates rest part, forms face-upward slope.Specifically, in the present embodiment, it uses
Cut and cover method from top to bottom excavated by staged and layered side slope 100,
In the present embodiment, face-upward slope is one kind of side slope 100, is primarily referred to as the side slope 100 positioned at tunnel exit.
It is laid with the first protective net 130 on the surface of face-upward slope, and forms first to 130 gunite concrete of the first protective net and mixes
Solidifying soil layer 300.Wherein, it can be used from the bottom to top to the injection order of 130 gunite concrete of the first protective net, the road Bing YiSXing
Line transversely moves repeatedly.
The drilling for burying anchor pole 500 is formed to face-upward slope drilling construction, to anchor after anchor pole 500 is embedded in drilling
Slip casting in the hollow slip casting cavity 530 of bar 500, forms the first injecting cement paste 550 after final set.It wherein, should be every during slip casting
Interval preset time carries out walking around to benefit slurry into drilling.Specifically, it can carry out walking around to benefit into drilling at interval of 1~2 hour
Slurry.Optionally, the weight ratio for injecting the cement and sand in the slurries in hollow slip casting cavity 530 is 1: 1~1: 2, water: cement
Weight ratio is 0.38: 1~0.45: 1.
After the completion of anchor pole 500 is constructed, forbid percussion, collision, drawing bolt 500 and suspension weight in three days.
Second protective net 510 is connect with anchor pole 500 far from one end of face-upward slope, and to the first concrete layer 300 and
Gunite concrete is between two protective nets 510 to form the second concrete layer 700.Wherein, to 510 gunite concrete of the second protective net
Injection order can be using from the bottom to top, and transversely moved repeatedly with zigzag.
In the present embodiment, it can be mentioned by the first protective net 130, the second protective net 510 and anchor pole 500 for face-upward slope
For reliable safeguard structure.Wherein, rear the first protective net 130 is first laid with and gunite concrete is formed what side slope 100 was excavated
First concrete layer 300 can play the role of tentatively protecting.Then by anchor pole 500 and into anchor pole 500 slip casting side
Formula further increases rock mass strength and globality near anchor pole 500, and one end of anchor pole 500 is additionally provided with the second protective net
510, Multiple Protective Structure can be provided for the protection of face-upward slope.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of slope protection structure, which is characterized in that including
Side slope, the side slope open up the first embedded hole, and the surface of the side slope is equipped with the first protective net；
First concrete layer, first concrete layer are layed in the surface of first protective net, first concrete layer
Offer the second embedded hole being correspondingly arranged with first embedded hole；
Anchor pole, the anchor pole are embedded in first embedded hole and second embedded hole, and the anchor pole is far from the side slope
One end expose to first concrete layer, the anchor pole is connected with the second protective net far from one end of the side slope, described
Anchor pole has hollow slip casting cavity, between the outer wall of the anchor pole and the inner wall of first embedded hole, the outer wall of the anchor pole
The first injecting cement paste is filled between the inner wall of second embedded hole and in the hollow slip casting cavity；And
Second concrete layer, second concrete layer fill between second protective net and first concrete layer.
2. slope protection structure according to claim 1, which is characterized in that an end cap of the anchor pole far from the side slope
Equipped with stop grouting plug, the outer wall of the stop grouting plug is abutted with the inner wall of second embedded hole, the inner wall of the stop grouting plug with it is described
The outer wall of anchor pole abuts.
3. slope protection structure according to claim 1, which is characterized in that the surface of the anchor pole is provided with external screw thread,
The anchor pole is provided with support division and locking part, the external screw thread spiral shell of the locking part and the anchor pole far from one end of the side slope
Line connection, the locking part can be by rotating so that the support division is abutted with the surface of the side slope.
4. slope protection structure according to claim 1, which is characterized in that first protective net is steel mesh.
5. slope protection structure according to claim 4, which is characterized in that the grid aperture of the steel mesh be 20cm ×
20cm。
6. a kind of tunnel advanced support structure, which is characterized in that including
The described in any item slope protection structures of claim 1-5；
Set arch skeleton, the set arch skeleton are set to the excavation entrance in tunnel；
Casing, described sleeve pipe are set to the surface with set arch skeleton；And
Set arch component, the set arch component include bed die, end mould and backform, and the bed die, end mould and backform are enclosed
Pour cavity and set arch skeleton and described sleeve pipe be in it is described pour in cavity, it is described to pour in cavity filled with coagulation
The soil body.
7. tunnel advanced support structure according to claim 6, which is characterized in that the set arch skeleton is set by multiple intervals
The lateral steelframe set is constituted, and is connected between the transverse direction steelframe by longitudinal connecting member.
8. tunnel advanced support structure according to claim 7, which is characterized in that the spacing between the transverse direction steelframe is equal
For 60~80cm.
9. tunnel advanced support structure according to claim 6, which is characterized in that described sleeve pipe has hollow cavity, institute
It states and is provided with the first pipe canopy conduit in hollow cavity, one end of the first pipe canopy conduit is embedded in the side slope, described sleeve pipe
With in the first pipe canopy conduit be filled with the second injecting cement paste.
10. tunnel advanced support structure according to claim 6, which is characterized in that the side slope is opened along tunnel excavation line
Equipped with guide hole, the second pipe canopy conduit is buried in the guide hole, is filled with third injecting cement paste in the guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821548634.0U CN208702425U (en) | 2018-09-20 | 2018-09-20 | Slope protection structure and tunnel advanced support structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821548634.0U CN208702425U (en) | 2018-09-20 | 2018-09-20 | Slope protection structure and tunnel advanced support structure |
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| Publication Number | Publication Date |
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| CN208702425U true CN208702425U (en) | 2019-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083164A (en) * | 2018-09-20 | 2018-12-25 | 中交公局海威工程建设有限公司 | Slope protection structure, tunnel advanced support structure and tunnel slope construction method |
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2018
- 2018-09-20 CN CN201821548634.0U patent/CN208702425U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083164A (en) * | 2018-09-20 | 2018-12-25 | 中交公局海威工程建设有限公司 | Slope protection structure, tunnel advanced support structure and tunnel slope construction method |
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