CN207212366U - A kind of tunnel main tunnel, which is caunched, excavates temporary support structures - Google Patents
A kind of tunnel main tunnel, which is caunched, excavates temporary support structures Download PDFInfo
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- CN207212366U CN207212366U CN201721290695.7U CN201721290695U CN207212366U CN 207212366 U CN207212366 U CN 207212366U CN 201721290695 U CN201721290695 U CN 201721290695U CN 207212366 U CN207212366 U CN 207212366U
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Abstract
Caunched the utility model discloses a kind of tunnel main tunnel and excavate temporary support structures, the front side rigid protection structure and rear side rigid protection structure caunched including supporting in main tunnel in section, the front side rigid protection structure and rear side rigid protection structure are on symmetrical before and after main tunnel center line, the front side rigid protection structure and rear side rigid protection structure include multiple steel frames, the both sides of each steel frame are provided with multiple long lock foot anchoring stocks from the bottom to top, and the caunch arch of section of the main tunnel is injected with concrete layer.The utility model is designed reasonably, it is simple in construction, weak broken wall rock during by setting multiple steel frames to tunnel excavation carries out timely sectional supporting, and per 0.5~1.0m of cyclic advance during excavation, supporting is soon carried out after the excavation of a circulation is completed, the distance between two neighboring steel frame is 0.5m~1.0m, in construction, supporting is more beneficial for ensureing the safety of construction, prevents from caving in during tunnel excavation, and reliability is high, it is practical, it is easy to promote the use of.
Description
Technical field
The utility model belongs to technical field of tunnel construction, and in particular to a kind of tunnel main tunnel, which is caunched, excavates gib knot
Structure.
Background technology
Nowadays during tunnel construction, carry out tunnel excavation during, for control surrouding rock stress in right amount release and
Deformation, increase strcture safety and facilitates the safety of subsequent construction, and tunnel excavation process should apply that rigidity is less to face immediately
When bearing structure, referred to as gib.To weak broken wall rock location, deformed before Tunnel often occurs, its
Main cause may have：1st, tunnel excavation section is too big, and excavating makes the relaxation circle of country rock become big；2nd, gib is come to nothing behind
Problem, gib do not play one's part to the full, area's country rock relaxation of coming to nothing, and influence peripheral rock relaxation deformation；3rd, interim branch
Shield can not meet to be actually needed；4th, because above-mentioned synthesis and other factorses cause tunnel deformation.
Therefore, a kind of reasonable in design, weak broken during by setting multiple steel frames to tunnel excavation is nowadays lacked
Country rock carries out timely sectional supporting, per 0.5~1.0m of cyclic advance during excavation, after the excavation of a circulation is completed soon
Progress the distance between supporting, two neighboring steel frame is 0.5m~1.0m, while construction while supporting be more beneficial for ensure construction
Safety, prevents from caving in during tunnel excavation；, can by setting multiple connection reinforcing bars between two neighboring steel frame
Multiple steel frames are connected as an entirety, add the stability of steel frame, at the same connect reinforcing bar can be to adjacent steel frame
Between tunnel surrounding carry out supporting, avoid and falling rocks occur between adjacent steel frame or caves in.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of tunnel
Main tunnel, which is caunched, excavates temporary support structures, and its is reasonable in design, simple in construction, during by setting multiple steel frames to tunnel excavation
Weak broken wall rock carries out timely sectional supporting, per 0.5~1.0m of cyclic advance during excavation, completes the excavation of a circulation
It is 0.5m~1.0m soon to carry out the distance between supporting, two neighboring steel frame afterwards, while construction while supporting be more beneficial for protecting
The safety of construction is demonstrate,proved, prevents from caving in during tunnel excavation；By setting multiple connections between two neighboring steel frame
Reinforcing bar, multiple steel frames can be connected as an entirety, add the stability of steel frame, at the same connect reinforcing bar can be to phase
Tunnel surrounding between adjacent steel frame carries out supporting, avoids and falling rocks occurs between adjacent steel frame or caves in, and reliability is high,
It is practical, it is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of tunnel main tunnel excavation that caunches faces
When supporting construction, it is characterised in that：Front side rigid protection structure and the rear side rigid protection to be caunched including supporting in main tunnel in section
Structure, the main tunnel caunch section for tunnel intersect section upper hole body section, the tunnel intersect section be main tunnel in intersect with horizontal hole
Tunnel construction sections, the tunnel intersect section width be equal to horizontal hole width, the tunnel intersect section vault be higher than horizontal hole vault,
The front side rigid protection structure and the rear side rigid protection structure are on symmetrical before and after main tunnel center line, the front side rigidity
Supporting construction and the rear side rigid protection structure include multiple steel frames, and each steel frame is along main tunnel bearing of trend cloth
If the parallel laying of multiple steel frames, in the bottoms of multiple steel frames is generally aligned in the same plane, the two neighboring steel canopy
The spacing of frame is 0.5m~1.0m, and multiple steel frames of the front side rigid protection structure gradually increase from front to back, after described
Multiple steel frames of side rigid protection structure are gradually reduced from front to back, and multiple tracks is connected between the top of the adjacent steel frame
Reinforcing bar is connected, connecting parallel reinforced steel bar described in multiple tracks is laid, and connection reinforcing bar is uniformly laid along main tunnel length direction described in multiple tracks, each
The both sides of the steel frame are provided with multiple long lock foot anchoring stocks from the bottom to top, and the rear end of the long lock foot anchoring stock is anchored at steel canopy
On frame, the long lock foot anchoring stock is tilted down by anchor pole rear end to anchor pole front end, and the caunch arch of section of the main tunnel is injected with mixing
Solidifying soil layer, the steel frame are covered in the concrete layer.
A kind of above-mentioned tunnel main tunnel, which is caunched, excavates temporary support structures, it is characterized in that：The steel frame is i-beam frame, institute
It is door cabinet frame to state steel frame.
A kind of above-mentioned tunnel main tunnel, which is caunched, excavates temporary support structures, it is characterized in that：The long lock foot anchoring stock is symmetrical arranged
In the left and right sides of each steel frame, the long lock foot anchoring stock is in each side setting two of each steel frame, the length
The length of lock foot anchoring stock is 3m.
A kind of above-mentioned tunnel main tunnel, which is caunched, excavates temporary support structures, it is characterized in that：The caunch bottom surface of section of the main tunnel is
Rectangular horizontal.
The utility model has advantages below compared with prior art：
1st, weak broken wall rock when the utility model is by setting multiple steel frames to tunnel excavation is timely divided
Section supporting, per 0.5~1.0m of cyclic advance during excavation, soon carry out supporting after the excavation of a circulation is completed, adjacent two
The distance between individual steel frame is 0.5m~1.0m, while construction while supporting be more beneficial for ensure construction safety, prevent tunnel from opening
Caved in during digging, be easy to promote the use of.
2nd, the utility model is on steel frame by setting multiple long lock foot anchoring stocks, by long lock foot anchoring stock by steel frame anchor
Gu on the side that the main tunnel caunches section both sides, the stability of steel frame is ensure that, further ensures the steady of supporting construction
Qualitative and security, reliable and stable, using effect is good.
4th, the utility model, can be by multiple steel frames by setting multiple connection reinforcing bars between two neighboring steel frame
An entirety is connected as, adds the stability of steel frame, while connects reinforcing bar to enclose the tunnel between adjacent steel frame
Rock carries out supporting, avoids and falling rocks occurs between adjacent steel frame or caves in.
5th, the utility model by main tunnel caunch section vault spray strength grade be C20 concrete layer, can be right
Vault is reinforced, while weak broken wall rock is solidified as into overall structure, is avoided work progress medium stone and is dropped and jeopardizes people
Member's safety.
In summary, the utility model is designed reasonably, it is simple in construction, during by setting multiple steel frames to tunnel excavation
Weak broken wall rock carries out timely sectional supporting, per 0.5~1.0m of cyclic advance during excavation, completes the excavation of a circulation
It is 0.5m~1.0m soon to carry out the distance between supporting, two neighboring steel frame afterwards, while construction while supporting be more beneficial for protecting
The safety of construction is demonstrate,proved, prevents from caving in during tunnel excavation；By setting multiple connections between two neighboring steel frame
Reinforcing bar, multiple steel frames can be connected as an entirety, add the stability of steel frame, at the same connect reinforcing bar can be to phase
Tunnel surrounding between adjacent steel frame carries out supporting, avoids and falling rocks occurs between adjacent steel frame or caves in, and reliability is high,
It is practical, it is easy to promote the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 A-A sectional views.
Description of reference numerals:
1-horizontal hole；2-main tunnel；3-steel frame；
4-long lock foot anchoring stock；5-connection reinforcing bar.
Embodiment
As depicted in figs. 1 and 2, the utility model include supporting front side rigid protection structure that main tunnel is caunched in section and after
Side rigid protection structure, the main tunnel caunch section for tunnel intersect section upper hole body section, the tunnel intersect section be main tunnel 2 in
The tunnel construction sections intersected with horizontal hole 1, the tunnel intersect width of the width equal to horizontal hole 1 of section, and the tunnel intersects the vault of section
Higher than the horizontal vault of hole 1, the front side rigid protection structure and the rear side rigid protection structure are on right before and after the center line of main tunnel 2
Claim, the front side rigid protection structure and the rear side rigid protection structure include multiple steel frames 3, each steel frame
3 lay along the bearing of trend of main tunnel 2, multiple 3 parallel layings of steel frame, and the bottom of multiple steel frames 3 is positioned at same flat
In face, the spacing of the two neighboring steel frame 3 is 0.5m~1.0m, multiple steel frames 3 of the front side rigid protection structure
Gradually increase from front to back, multiple steel frames 3 of the rear side rigid protection structure gradually reduce from front to back, the adjacent steel
Multiple tracks connection reinforcing bar 5 is connected between the top of frame 3,5 parallel laying of reinforcing bar is connected described in multiple tracks, reinforcing bar is connected described in multiple tracks
5 uniformly lay along the length direction of main tunnel 2, and the both sides of each steel frame 3 are provided with multiple long lock foot anchoring stocks from the bottom to top
4, the rear end of the long lock foot anchoring stock 4 is anchored on steel frame 3, the long lock foot anchoring stock 4 from anchor pole rear end to anchor pole front end to
Lower inclination, the caunch arch of section of the main tunnel are injected with concrete layer, and the steel frame 3 is covered in the concrete layer.
Weak broken wall rock when in actual use, by setting multiple steel frames 3 to tunnel excavation is carried out
Timely sectional supporting, per 0.5~1.0m of cyclic advance during excavation, soon propped up after the excavation of a circulation is completed
Shield, the distance between two neighboring steel frame 3 be 0.5m~1.0m, in construction supporting be more beneficial for ensureing the safety constructed,
Prevent from caving in during tunnel excavation；By setting multiple long lock foot anchoring stocks 4 on the steel frame 3, pass through the length
Lock foot anchoring stock 4 by steel frame 3 be anchored at the main tunnel caunch section both sides side on, ensure that the stability of steel frame 3, enter one
Step ensure that the stability and security of supporting construction；By setting multiple connection reinforcing bars 5 between two neighboring steel frame 3,
Multiple steel frames 3 can be connected as an entirety, add the stability of steel frame 3, at the same connect reinforcing bar 5 can be to adjacent
Tunnel surrounding between steel frame 3 carries out supporting, avoids and falling rocks occurs between adjacent steel frame 3 or caves in；By institute
State main tunnel caunch section vault injection strength grade be C20 concrete layer, vault can be reinforced, while will be weak broken
Broken country rock is solidified as overall structure, avoids work progress medium stone and drops and jeopardizes personal security.
As depicted in figs. 1 and 2, in the present embodiment, the steel frame 3 is i-beam frame, and the steel frame 3 is door cabinet frame.
In actual use, the i-beam frame disclosure satisfy that section of being caunched to the main tunnel carries out the intensity of gib
Demand, the security that the main tunnel is caunched in section work progress is ensure that, prevent main tunnel section of caunching to cave in.
As depicted in figs. 1 and 2, in the present embodiment, the long lock foot anchoring stock 4 is symmetricly set on the left and right of each steel frame 3
Both sides, in each side setting two of each steel frame 3, the length of the long lock foot anchoring stock 4 is the long lock foot anchoring stock 4
3m。
In actual use, two long lock foot anchoring stock 4 is respectively set on the both sides of each steel frame 3, can be to steel frame 3
Play good anchorage effect, ensure that steel frame 3 main tunnel is caunched section carry out supporting stability, avoid steel frame
3 collapse.
As depicted in figs. 1 and 2, in the present embodiment, the caunch bottom surface of section of the main tunnel is rectangular horizontal.
In actual use, the caunch bottom surface of section of the main tunnel is rectangular horizontal, is more beneficial for carrying out the main tunnel
The excavation for section of caunching, while enough spaces can be provided for follow-up constructing tunnel.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (4)
1. a kind of tunnel main tunnel, which is caunched, excavates temporary support structures, it is characterised in that：Including supporting before main tunnel is caunched in section
Side rigid protection structure and rear side rigid protection structure, the main tunnel caunch section for tunnel intersect section upper hole body section, it is described
It is the tunnel construction sections intersected in main tunnel (2) with horizontal hole (1) that tunnel, which intersects section, and the width that the tunnel intersects section is equal to horizontal hole (1)
Width, the vault that the tunnel intersects section are higher than horizontal hole (1) vault, and the front side rigid protection structure and the rear side rigidly prop up
For protection structure on symmetrical before and after main tunnel (2) center line, the front side rigid protection structure and the rear side rigid protection structure are equal
Including multiple steel frames (3), each steel frame (3) is laid along main tunnel (2) bearing of trend, and multiple steel frames (3) are flat
Row is laid, and in the bottoms of multiple steel frames (3) is generally aligned in the same plane, the spacing of the two neighboring steel frame (3) is
0.5m~1.0m, multiple steel frames (3) of the front side rigid protection structure are gradually increased from front to back, and the rear side rigidly props up
Multiple steel frames (3) of protection structure are gradually reduced from front to back, and multiple tracks company is connected between the top of the adjacent steel frame (3)
Reinforcing bar (5) is connect, the parallel laying of reinforcing bar (5) is connected described in multiple tracks, it is equal along main tunnel (2) length direction to connect reinforcing bar (5) described in multiple tracks
Even laying, the both sides of each steel frame (3) are provided with multiple long lock foot anchoring stocks (4), the long lock pin anchor from the bottom to top
The rear end of bar (4) is anchored on steel frame (3), and the long lock foot anchoring stock (4) is tilted down by anchor pole rear end to anchor pole front end, institute
State the caunch arch of section of main tunnel and be injected with concrete layer, the steel frame (3) is covered in the concrete layer.
2. being caunched according to a kind of tunnel main tunnel described in claim 1 excavates temporary support structures, it is characterised in that：The steel canopy
Frame (3) is i-beam frame, and the steel frame (3) is door cabinet frame.
3. being caunched according to a kind of tunnel main tunnel described in claim 1 or 2 excavates temporary support structures, it is characterised in that：It is described
Long lock foot anchoring stock (4) is symmetricly set on the left and right sides of each steel frame (3), and the long lock foot anchoring stock (4) is in each steel frame
(3) each side setting two, the length of the long lock foot anchoring stock (4) is 3m.
4. being caunched according to a kind of tunnel main tunnel described in claim 1 or 2 excavates temporary support structures, it is characterised in that：It is described
The caunch bottom surface of section of main tunnel is rectangular horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721290695.7U CN207212366U (en) | 2017-09-30 | 2017-09-30 | A kind of tunnel main tunnel, which is caunched, excavates temporary support structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721290695.7U CN207212366U (en) | 2017-09-30 | 2017-09-30 | A kind of tunnel main tunnel, which is caunched, excavates temporary support structures |
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| Publication Number | Publication Date |
|---|---|
| CN207212366U true CN207212366U (en) | 2018-04-10 |
Family
ID=61820726
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721290695.7U Active CN207212366U (en) | 2017-09-30 | 2017-09-30 | A kind of tunnel main tunnel, which is caunched, excavates temporary support structures |
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| Country | Link |
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| CN (1) | CN207212366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403985A (en) * | 2018-10-18 | 2019-03-01 | 中铁十二局集团有限公司 | The gate-type of pole weak broken wall rock layer is caunched engineering method |
| CN109812270A (en) * | 2019-03-22 | 2019-05-28 | 贵州智华建设工程有限责任公司 | A kind of supporting construction and its construction method of Tunnel Passing rich water filled-type solution cavity |
-
2017
- 2017-09-30 CN CN201721290695.7U patent/CN207212366U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403985A (en) * | 2018-10-18 | 2019-03-01 | 中铁十二局集团有限公司 | The gate-type of pole weak broken wall rock layer is caunched engineering method |
| CN109812270A (en) * | 2019-03-22 | 2019-05-28 | 贵州智华建设工程有限责任公司 | A kind of supporting construction and its construction method of Tunnel Passing rich water filled-type solution cavity |
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