CN207177920U - A kind of shallow-depth-excavation tunnel fall changes arch processing unit - Google Patents
A kind of shallow-depth-excavation tunnel fall changes arch processing unit Download PDFInfo
- Publication number
- CN207177920U CN207177920U CN201720539892.1U CN201720539892U CN207177920U CN 207177920 U CN207177920 U CN 207177920U CN 201720539892 U CN201720539892 U CN 201720539892U CN 207177920 U CN207177920 U CN 207177920U
- Authority
- CN
- China
- Prior art keywords
- shelf
- arch
- steel arch
- vault
- haunch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of shallow-depth-excavation tunnel fall to change arch processing unit, including below massif pitfall and for Shed-pipe Advanced Support, the vault steel arch-shelf below Shed-pipe Advanced Support, the haunch steel arch-shelf being connected with vault steel arch-shelf both sides, the inverted arch steel arch-shelf being connected with the haunch steel arch-shelf bottom of vault steel arch-shelf both sides of supporting massif, the inner bottom part of inverted arch steel arch-shelf has poured inverted arch concrete, and the inner side of vault steel arch-shelf and haunch steel arch-shelf has poured secondary lining concrete；Vault steel arch-shelf, haunch steel arch-shelf, the installation connection of inverted arch steel arch-shelf form closed hoop structure.The shallow-depth-excavation tunnel fall changes arch processing unit and its processing method after tunnel generation fall accident, can obtain timely and effectively technical finesse, it is ensured that construction quality and construction safety.
Description
Technical field
A kind of technical field of mountain tunnel shallow burial hidden digging construction is the utility model is related to, especially mainly for shallow embedding
Bored tunnel, after excavating stage massif and fall occurs, how to handle one kind that landslide section and vault sinking section propose
Shallow-depth-excavation tunnel fall changes arch processing unit.
Background technology
Mountain tunnel, particularly those height above sea level are not high, buried depth is shallower short and small tunnel when being excavated using benching tunnelling method, due to
Up/down steps are too long for gap, and inverted arch bow member is installed not in time, and arch ring can not close as early as possible, the reasons such as secondary lining does not catch up with, then
Rainy season construction is met, rainwater is largely assembled in massif, and vault load-bearing increases severely, and it is common engineering that the landslide of roof fall formula, which occurs, for tunnel
Accident.
The direct result that tunnel occurs to present after fall is that mountain upper ground surface huge pitfall occurs, and a large amount of soil bodys pour in
In hole, landslide Duan Chuzhi steelframe almost all collapses, and landslide section front and rear sides vault sinking, first branch steelframe invades tunnel clearance circle
Limit.
The method for handling such Tunnel Landslide accident is more, but treatment effect is very different, cannot definitely protect safely
Card.For standard construction, improve treatment effect, improve operating efficiency, increase safety guarantee, research and probe is a kind of safely and effectively,
Practicable tunnel fall changes arch handling process to be had very for the construction risk for reducing shallow buried covered excavation mountain tunnel
Important meaning.
The content of the invention
The purpose of this utility model is solve the shortcomings that above-mentioned prior art and deficiency, there is provided a kind of shallow-depth-excavation tunnel
Fall changes arch processing unit, and the shallow-depth-excavation tunnel fall, which changes arch processing unit, fall accident is occurring
Shallow buried covered excavation mountain tunnel is carried out afterwards, can obtain timely and effectively technical finesse, it is ensured that construction quality and construction safety, safety
Reliability is high, construction quality is guaranteed.
The utility model solve technical scheme that its technical problem uses for：A kind of shallow-depth-excavation tunnel fall changes arch
Processing unit, including the Shed-pipe Advanced Support below massif pitfall and for supporting massif, the lower section below Shed-pipe Advanced Support
Vault steel arch-shelf, the haunch steel arch-shelf being connected with vault steel arch-shelf both sides, the haunch steel arch-shelf bottom with vault steel arch-shelf both sides
The inverted arch steel arch-shelf of connection, the inner bottom part of inverted arch steel arch-shelf have poured inverted arch concrete, vault steel arch-shelf and haunch steel arch-shelf
Inner side has poured secondary lining concrete；Vault steel arch-shelf, haunch steel arch-shelf, the installation connection of inverted arch steel arch-shelf form close ring
Shape structure.
Further, the Shed-pipe Advanced Support top, which has poured, is oriented to wall or is erected with guiding trestle, and Shed-pipe Advanced Support is provided with pipe
Canopy drills；It is oriented to wall or guiding trestle is able to ensure that the drilling of pipe canopy without departing from supporting scope.
Further, after described vault steel arch-shelf, haunch steel arch-shelf, the installation of inverted arch steel arch-shelf are connected and inverted arch mixes
Closely coupled integral type closed hoop structure is formed after solidifying soil and secondary lining concreting, after ensureing each steel arch-shelf cyclization
Supporting is strong.
Further, the pipe canopy of described Shed-pipe Advanced Support use a diameter of 108mm, wall thickness for 6mm hot rolled seamless steel tube,
The supporting length of Shed-pipe Advanced Support exceeds 5~8m of process range.
In addition, the utility model, which further relates to a kind of shallow-depth-excavation tunnel fall, changes arch processing method, the step of the processing
Suddenly it is：
（1）Massif pitfall backfills：After fall occurs for tunnel, that reconnoitres massif original ground first collapses scope, on mountain
Set up a cordon around body pitfall, and protection network is set, prevent that people and poultry crash into pitfall on mountain；Excavate and cut on massif pitfall periphery
Ditch, prevent surface water from importing in massif pitfall, penetrate into tunnel, secondary landslide occurs；After execution conditions possess, using cement or
Cement earthen backfill massif pitfall, one layer is often backfilled, must spray appropriate water into massif pitfall, ensure that cement or soil cement can be with
Hardening, if rain work, can remove watering link from；
（2）Shed-pipe Advanced Support：It should first construct to be formed before the drilling of pipe canopy and be oriented to wall or set up guiding trestle, pipe canopy uses diameter
108mm, wall thickness 6mm hot rolled seamless steel tube, supporting length exceeds 5~8m of process range, to being starched in hot rolled seamless steel tube
For liquid to full closely knit, final grouting pressure is not less than 1.0MPa；
（3）Haunch excavates and the installation of haunch steel arch-shelf：After pipe canopy strength of cement grout reaches design strength, opened by Pin slottings
Hole both sides haunch part, installation haunch steel arch-shelf and combined bolting and shotcrete synchronous coordination is carried out, make the arch springing of haunch steel arch-shelf with
Lock pin anchor tube firm welding；
（4）Inverted arch excavates and the installation of inverted arch steel arch-shelf：Inverted arch is excavated in slotting, installs inverted arch steel arch-shelf, makes inverted arch steel arch-shelf
Firmly it is connected with haunch steel arch-shelf；
（5）Vault excavates and the installation of vault steel arch-shelf：Vault is excavated by Pin slottings, vault steel arch-shelf is installed and sprays anchor branch
Shield, the connection with haunch steel arch-shelf is completed, haunch steel arch-shelf, inverted arch steel arch-shelf and vault steel arch-shelf is closed into the steel arch of ring-type
Circle；
（6）Inverted arch concreting：Excavation supporting often completes four circulations, Excavation Length about 2m, inverted arch concreting
Once, or situation of change can be restrained according to country rock, adjusts inverted arch concreting length；
（7）Secondary lining：After inverted arch concreting length reaches the length of a lining trolley, secondary lining of constructing,
After the completion of secondary lining, construction is completed, processing terminates.
Further, described step（3）In, haunch is excavated and haunch steel arch-shelf is arranged on before preliminary bracing construction,
Lining trolley is promoted into the scope of operation, serves as the emergent protection place of operating personnel；Excavation uses slotting local excavation, reduces as far as possible
Disturbance to the periphery soil body.
Further, the step（7）In secondary lining should carry out after the inverted arch concrete, shorten secondary lining as far as possible
Build the distance between excavation face.
In summary, shallow-depth-excavation tunnel fall of the present utility model changes arch processing unit and had the following advantages that：
（1）Using cement or cement earthen backfill massif pitfall, massif pitfall periphery soil strength is improved, it is stable to increase it
Property, effectively prevent the secondary landslide in tunnel；
（2）Using the reliable Shed-pipe Advanced Support of supporting, change arch process for follow-up excavation and carry arch safety work barrier, and utilize lining
Platform building cart protects place as emergent, the life security of operating personnel is protected；
（3）Ring structure is closed into using each steel arch-shelf, with reference to the scheme of inverted arch concrete and secondary lining, effective enhancing
The rigidity of preliminary bracing arch ring, the deformation of country rock are controlled, and then improve the resistance to overturning in tunnel.
Brief description of the drawings
Below in conjunction with the accompanying drawings, and by reference to following detailed description, the utility model will be better understood and understand it
Advantages and features, accompanying drawing is used to illustrate the utility model, and unrestricted the utility model；Representing the accompanying drawing of structure may not press
Ratio is drawn；Also, in accompanying drawing, same or similar element indicates same or similar label：
Fig. 1 is the schematic cross-sectional view that a kind of shallow-depth-excavation tunnel fall of the present utility model changes arch processing unit；
Fig. 2 is that a kind of shallow-depth-excavation tunnel fall of the present utility model changes signal of the arch processing unit in tunnel
Figure.
Embodiment
Embodiment 1
A kind of shallow-depth-excavation tunnel fall described described in the present embodiment 1 changes arch processing unit, such as Fig. 1 and Fig. 2 institutes
Show, the Shed-pipe Advanced Support 2 positioned at the lower section of massif pitfall 1 and for supporting massif, the vault steel arch positioned at Shed-pipe Advanced Support lower section lower section
Frame 5, the haunch steel arch-shelf 3 being connected with vault steel arch-shelf both sides, it is connected with the haunch steel arch-shelf bottom of vault steel arch-shelf both sides
Inverted arch steel arch-shelf 4, the inner bottom part of inverted arch steel arch-shelf have poured the inner side of inverted arch concrete 6, vault steel arch-shelf and haunch steel arch-shelf
Secondary lining concrete seven is poured；Vault steel arch-shelf, haunch steel arch-shelf, the installation connection of inverted arch steel arch-shelf form closed hoop
Structure.
The Shed-pipe Advanced Support top, which has poured, to be oriented to wall or is erected with guiding trestle, and Shed-pipe Advanced Support drills provided with pipe canopy；It is oriented to
Wall or guiding trestle are able to ensure that the drilling of pipe canopy without departing from supporting scope.
The vault steel arch-shelf, haunch steel arch-shelf, inverted arch steel arch-shelf installation be connected after and inverted arch concrete and secondary lining
Building concrete forms closely coupled integral type closed hoop structure after pouring, supporting is strong after ensureing each steel arch-shelf cyclization.
The pipe canopy of the Shed-pipe Advanced Support uses a diameter of 108mm, wall thickness as 6mm hot rolled seamless steel tube, the branch of Shed-pipe Advanced Support
Shield length exceeds 5~8m of process range.
In addition, the utility model, which further relates to a kind of shallow-depth-excavation tunnel fall, changes arch processing method, the step of the processing
Suddenly it is：
（1）Massif pitfall backfills：After fall occurs for tunnel, that reconnoitres massif original ground first collapses scope, on mountain
Set up a cordon around body pitfall, and protection network is set, prevent that people and poultry crash into pitfall on mountain；Excavate and cut on massif pitfall periphery
Ditch, prevent surface water from importing in massif pitfall, penetrate into tunnel, secondary landslide occurs；After execution conditions possess, using cement or
Cement earthen backfill massif pitfall, one layer is often backfilled, must spray appropriate water into massif pitfall, ensure that cement or soil cement can be with
Hardening, if rain work, can remove watering link from；
（2）Shed-pipe Advanced Support：It should first construct to be formed before the drilling of pipe canopy and be oriented to wall or set up guiding trestle, pipe canopy uses diameter
108mm, wall thickness 6mm hot rolled seamless steel tube, supporting length exceeds 5~8m of process range, to being starched in hot rolled seamless steel tube
For liquid to full closely knit, final grouting pressure is not less than 1.0MPa；
（3）Haunch excavates and the installation of haunch steel arch-shelf：After pipe canopy strength of cement grout reaches design strength, opened by Pin slottings
Hole both sides haunch part, installation haunch steel arch-shelf and combined bolting and shotcrete synchronous coordination is carried out, make the arch springing of haunch steel arch-shelf with
Lock pin anchor tube firm welding；
（4）Inverted arch excavates and the installation of inverted arch steel arch-shelf：Inverted arch is excavated in slotting, installs inverted arch steel arch-shelf, makes inverted arch steel arch-shelf
Firmly it is connected with haunch steel arch-shelf；
（5）Vault excavates and the installation of vault steel arch-shelf：Vault is excavated by Pin slottings, vault steel arch-shelf is installed and sprays anchor branch
Shield, the connection with haunch steel arch-shelf is completed, haunch steel arch-shelf, inverted arch steel arch-shelf and vault steel arch-shelf is closed into the steel arch of ring-type
Circle；
（6）Inverted arch concreting：Excavation supporting often completes four circulations, Excavation Length about 2m, inverted arch concreting
Once, or situation of change can be restrained according to country rock, adjusts inverted arch concreting length；
（7）Secondary lining：After inverted arch concreting length reaches the length of a lining trolley, secondary lining of constructing,
After the completion of secondary lining, construction is completed, processing terminates.
The step（3）In, haunch is excavated and haunch steel arch-shelf is arranged on before preliminary bracing construction, and lining trolley 8 is pushed away
Enter the scope of operation, serve as the emergent protection place of operating personnel；Excavation uses slotting local excavation, reduces as far as possible to the periphery soil body
Disturbance.
The step（7）In secondary lining should carry out after the inverted arch concrete, shorten secondary lining and excavation face as far as possible
The distance between.
Label 9 in Fig. 2 is expressed as vault sinking end, and label 10 is expressed as the region that caves in, and label 11 is expressed as face,
Label 12 is expressed as IV grade of country rock.
It is described above, only it is preferred embodiment of the present utility model, not structure of the present utility model is made any
Formal limitation.Every any simple modification made according to the technical essence of the utility model to above example, it is equal
Change and modification, in the range of still falling within the technical solution of the utility model.
Claims (4)
1. a kind of shallow-depth-excavation tunnel fall changes arch processing unit, it is characterised in that including positioned under massif pitfall
Side and the Shed-pipe Advanced Support for supporting massif, the vault steel arch-shelf of lower section and vault steel arch-shelf both sides below Shed-pipe Advanced Support
The haunch steel arch-shelf of connection, the inverted arch steel arch-shelf being connected with the haunch steel arch-shelf bottom of vault steel arch-shelf both sides, inverted arch steel arch-shelf
Inner bottom part poured inverted arch concrete, the inner side of vault steel arch-shelf and haunch steel arch-shelf has poured secondary lining concrete；
Vault steel arch-shelf, haunch steel arch-shelf, the installation connection of inverted arch steel arch-shelf form closed hoop structure.
2. a kind of shallow-depth-excavation tunnel fall according to claim 1 changes arch processing unit, it is characterised in that described
Shed-pipe Advanced Support top, which has poured, to be oriented to wall or is erected with guiding trestle, and Shed-pipe Advanced Support drills provided with pipe canopy.
3. a kind of shallow-depth-excavation tunnel fall according to claim 2 changes arch processing unit, it is characterised in that described
Vault steel arch-shelf, haunch steel arch-shelf, inverted arch steel arch-shelf installation be connected after and inverted arch concrete and secondary lining concrete
Closely coupled integral type closed hoop structure is formed after pouring.
4. a kind of shallow-depth-excavation tunnel fall according to claim 3 changes arch processing unit, it is characterised in that described
The pipe canopy of Shed-pipe Advanced Support use a diameter of 108mm, wall thickness the supporting length of Shed-pipe Advanced Support surpass for 6mm hot rolled seamless steel tube
Go out 5~8m of process range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539892.1U CN207177920U (en) | 2017-05-16 | 2017-05-16 | A kind of shallow-depth-excavation tunnel fall changes arch processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539892.1U CN207177920U (en) | 2017-05-16 | 2017-05-16 | A kind of shallow-depth-excavation tunnel fall changes arch processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177920U true CN207177920U (en) | 2018-04-03 |
Family
ID=61732145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720539892.1U Expired - Fee Related CN207177920U (en) | 2017-05-16 | 2017-05-16 | A kind of shallow-depth-excavation tunnel fall changes arch processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207177920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420115A (en) * | 2017-05-16 | 2017-12-01 | 江门市政企业集团有限公司 | A kind of shallow-depth-excavation tunnel fall changes arch processing unit and its processing method |
-
2017
- 2017-05-16 CN CN201720539892.1U patent/CN207177920U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420115A (en) * | 2017-05-16 | 2017-12-01 | 江门市政企业集团有限公司 | A kind of shallow-depth-excavation tunnel fall changes arch processing unit and its processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105041333B (en) | It is a kind of first to fill out the method for digging method processing Tunnel Landslide afterwards | |
| CN205742213U (en) | Foundation pit supporting construction | |
| CN104806267B (en) | The shield end reinforcement system and its construction method of land pebble stratum super-front large pipe shed | |
| CN104278993B (en) | A kind of bias voltage Skew Tunnel enters the constructional method in hole | |
| CN106400813A (en) | Foundation pit support system and construction method thereof | |
| CN104452809A (en) | Ultra-shallow buried tunnel cover-excavation construction method | |
| CN103206219A (en) | Holed excavation supporting structure for light and dark junction section of tunnel in bias pressure state and construction method | |
| CN101914925A (en) | Basement by using optimized composite prefabricated arch wall as external wall | |
| CN107083771B (en) | A kind of drilling construction method of artificial digging pile | |
| CN202117686U (en) | Surrounding rock advanced support structure for railway tunnel at deep-buried watery and weak stratums | |
| CN102587924A (en) | Construction method for shallow-buried high-water-content clayed soil tunnel | |
| CN207633352U (en) | A kind of slope reinforcement structure for rapid rescue construction | |
| CN107420115A (en) | A kind of shallow-depth-excavation tunnel fall changes arch processing unit and its processing method | |
| CN101324071B (en) | Pervious rib type arch beam tunnel | |
| CN109812270A (en) | A kind of supporting construction and its construction method of Tunnel Passing rich water filled-type solution cavity | |
| CN108625879A (en) | Mountain Tunnels half-open and half-hidden structure and its construction method | |
| CN106703044A (en) | Flow-plastic-shaped flushing and filling soil weak stratum sloping combination support method | |
| CN103114595A (en) | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch | |
| CN109457709A (en) | A kind of supporting construction and construction method of double-row pile combination wide-angle anchor cable | |
| CN103993885A (en) | Construction method for underground excavation tunnel side-direction hole opening supporting system | |
| CN104141500A (en) | Hardened sand gravel stratum cavern construction method | |
| CN108374674B (en) | Six pilot tunnels, 12 step Underground Space Excavation method for protecting support | |
| CN213574100U (en) | Pass shallow dark half-wall semi-arch protection structure of making of bias voltage tunnel of burying of accumulation body | |
| CN104453915B (en) | Big cross section vertical shaft pre-pouring grout reinforces Rapid Excavation method | |
| CN207177920U (en) | A kind of shallow-depth-excavation tunnel fall changes arch processing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20210516 |