CN217632452U - Weak surrounding rock super large section tunnel excavation supporting construction - Google Patents
Weak surrounding rock super large section tunnel excavation supporting construction Download PDFInfo
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- CN217632452U CN217632452U CN202221197994.7U CN202221197994U CN217632452U CN 217632452 U CN217632452 U CN 217632452U CN 202221197994 U CN202221197994 U CN 202221197994U CN 217632452 U CN217632452 U CN 217632452U
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Abstract
The utility model relates to a weak country rock super large section tunnel excavation supporting construction relates to the technical field of tunnel excavation, including protecting the mechanism, supporting mechanism includes: the main supporting frames are detachably spliced together through the first positioning assembly and are used for supporting the tunnel; and the auxiliary support frames are detachably spliced together through the second positioning assembly and are used for supporting the main support frame. This application is in the same place a plurality of main support frame fixed connection through first locating component, support the tunnel with this, then be in the same place a plurality of auxiliary stay frames fixed connection through second locating component, support the main tributary strut with this, thereby support the tunnel, and when needing to dismantle, reverse operation can be dismantled main tributary strut and auxiliary stay frame, thereby the convenience when having improved strutting the tunnel, consequently, the efficiency of construction when tunnel excavation has been improved.
Description
Technical Field
The utility model belongs to the technical field of tunnel excavation's technique and specifically relates to a weak country rock super large section tunnel excavation supporting construction is related to.
Background
In the construction process of the tunnel with the ultra-large section and the weak surrounding rock, the traditional excavation method is a double-side-wall pit guiding method, a CD method, a CRD method and the like, and the double-side-wall pit guiding method and the CRD method have good adaptability aiming at the tunnel with the ultra-large section and the poor surrounding rock, but support bodies are supported for stability and are difficult to dismount, so that the construction efficiency is reduced during tunnel excavation.
SUMMERY OF THE UTILITY MODEL
In order to improve the efficiency of construction when the tunnel excavation, this application provides weak country rock super large section tunnel excavation supporting construction.
The application provides a weak country rock super large section tunnel excavation supporting construction adopts following technical scheme:
weak country rock super large section tunnel excavation supporting construction, including supporting mechanism, supporting mechanism includes:
the tunnel supporting device comprises a plurality of main supporting frames, a plurality of supporting frames and a plurality of positioning assemblies, wherein the main supporting frames are detachably spliced together through the first positioning assemblies and are used for supporting a tunnel;
the auxiliary support frames are detachably spliced together through the second positioning assembly and are used for supporting the main support frame.
Through adopting above-mentioned technical scheme, through first locating component with a plurality of main support frame fixed connection together, support the tunnel with this, then be in the same place a plurality of auxiliary stay frame fixed connection through second locating component, support the main tributary strut with this, thereby support the tunnel, and when needing to dismantle, reverse operation can be dismantled main tributary strut and auxiliary stay frame, thereby the convenience when having improved strutting the tunnel, consequently, the efficiency of construction when tunnel excavation has been improved.
Optionally, the inserting grooves have been all seted up on main tributary strut both ends, first positioning component includes:
the two ends of the positioning block are inserted and installed on the insertion grooves of the two adjacent main support frames;
and the two positioning screws penetrate through the two main support frames and are in threaded connection with the positioning blocks for positioning.
By adopting the technical scheme, two ends of the positioning block are respectively inserted into the insertion grooves of the two adjacent main support frames, and then the two positioning screws are screwed to penetrate through the main support frames and are connected to the positioning block through threads, so that the two main support frames are fixedly connected together.
Optionally, a guide angle convenient for being inserted and installed on the insertion groove is formed in the positioning block.
Through adopting above-mentioned technical scheme, the direction angle is gone on the inserting groove is installed in the locating piece grafting to this convenience when having improved two main support frames of installation.
Optionally, each of the main support frame and the auxiliary support frame is provided with a support rod, and two ends of each two adjacent support rods are abutted together to form a splayed shape.
Through adopting above-mentioned technical scheme, the bracing piece carries out the component to main tributary strut and auxiliary stay frame to this has improved the effect of strutting of supporting construction to the tunnel.
Optionally, the second positioning assembly includes:
the positioning plate is erected on the side wall of one side, away from the main support frame, of each of the two auxiliary support frames;
the two positioning bolts penetrate through the two auxiliary supporting frames and the positioning plate;
and the two positioning nuts are in threaded connection with the two positioning bolts and are tightly abutted against the positioning plate for positioning.
Through adopting above-mentioned technical scheme, pass auxiliary stay frame and locating plate with two positioning bolt, then with set nut threaded connection to positioning bolt for set nut supports tightly to fix a position on the locating plate, fixes two auxiliary stay frames together with this.
Optionally, be located peg graft on two adjacent bracing pieces on the main tributary strut and install the first fixed plate that is used for fixing, be located peg graft on two adjacent bracing pieces on the assistant support frame and install the second fixed plate that is used for fixing, two positioning screw passes first fixed plate and supports to press and fix a position on first fixed plate, and two positioning bolt passes the second fixed plate and supports to press and fix a position on the second fixed plate.
Through adopting above-mentioned technical scheme, peg graft first fixed plate and install and fix a position on two bracing pieces, then pass first fixed plate threaded connection to the locating piece with positioning screw to this comes to fix a position the one end of two bracing pieces, then peg graft the second fixed plate and install one of two bracing pieces and serve, then pass the second fixed plate and support to press and fix a position on the second fixed plate with positioning bolt, come the one end of two bracing pieces of fixed mounting with this, thereby realize the fixed and installation of a plurality of bracing pieces.
Optionally, the joint of the two main support frames and the joint of the two auxiliary support frames are arranged in a staggered manner.
By adopting the technical scheme, the probability that the two main supporting frames or the two auxiliary supporting frames are separated from the joint is reduced, so that the supporting effect of the supporting structure on the tunnel is improved.
Optionally, the two auxiliary support frames located at the lowest position are fixedly connected together through a fixing rod, and the fixing rod is detachably connected through a fixing screw.
Through adopting above-mentioned technical scheme, contradict the lateral wall of two opposite one sides of assistant support frame with the dead lever both ends on, then pass assistant support frame threaded connection to the dead lever with set screw to this comes fixed mounting dead lever, consequently the dead lever fixes a position assistant support frame, thereby has improved the effect of strutting of supporting construction to the tunnel.
In summary, the present application includes at least one of the following beneficial technical effects:
through first locating component with a plurality of main support frame fixed connection together, support the tunnel with this, then through second locating component with a plurality of auxiliary stay frames fixed connection together, support the main tributary strut with this, thereby support the tunnel, and when needing to dismantle, the reversal operation can be dismantled main tributary strut and auxiliary stay frame, thereby the convenience when having improved strutting the tunnel, consequently, the efficiency of construction when tunnel excavation has been improved.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic view of the first positioning assembly and the second positioning assembly of the present application;
fig. 3 is a partial structural view of the present application, mainly illustrating the second fixing plate and the structure on the second fixing plate, wherein the second fixing plate, the positioning bolt and the second plugging rod are exploded;
reference numerals: 2. a support mechanism; 21. a main supporting frame; 22. a secondary support frame; 23. inserting grooves; 3. a support bar; 31. a first fixing plate; 32. a first plug-in rod; 33. a second fixing plate; 34. a second plug-in rod; 4. a first positioning assembly; 41. positioning blocks; 42. positioning a screw rod; 5. a second positioning assembly; 51. positioning a plate; 52. positioning the bolt; 53. positioning a nut; 6. fixing the rod; 61. and fixing the screw.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses weak country rock super large section tunnel excavation supporting construction.
Referring to fig. 1, the supporting structure for excavating the weak surrounding rock tunnel with the ultra-large section comprises a supporting mechanism 2 for supporting the tunnel, wherein the tunnel comprises an arched part and a horizontal bottom wall part.
Referring to fig. 1 and 2, the supporting mechanism 2 includes a plurality of main supporting frames 21 and a plurality of auxiliary supporting frames 22, the plurality of main supporting frames 21 are detachably spliced together through the first positioning assembly 4, the plurality of main supporting frames 21 are pressed against the tunnel arch for supporting the tunnel arch, and the two ends of the main supporting frames 21 are respectively provided with an inserting groove 23; the plurality of auxiliary support frames 22 are detachably spliced together through the second positioning assembly 5, and the plurality of auxiliary support frames 22 are used for supporting and positioning the main support frame 21.
Referring to fig. 1 and 2, the joints of the multiple sub-supporting frames 22 and the joints of the multiple main supporting frames 21 are arranged in a staggered manner, the joints of two adjacent main supporting frames 21 and the joints of two sub-supporting frames 22 are connected together through the equal supporting rods 3, two ends of two adjacent supporting rods 3 are butted together, and two adjacent supporting rods 3 are matched to form a splayed shape.
Referring to fig. 2 and 3, two ends of two adjacent support rods 3 connected with the main support rod 3 are provided with a first fixing plate 31 for fixing in a clamping manner, and the first fixing plate 31 is fixedly provided with a first inserting rod 32 inserted and installed on the two support rods 3; and two adjacent supporting rods 3 connected with the auxiliary supporting rod 3 are connected with each other at two ends and are provided with a second fixing plate 33 for fixing in a clamping manner, and second inserting rods 34 inserted and installed on the two supporting rods 3 are fixedly installed on the second fixing plates 33.
Referring to fig. 2 and 3, the first positioning assembly 4 includes a positioning block 41 and two positioning screws 42, two ends of the positioning block 41 are respectively inserted into the insertion grooves 23 of two adjacent main support frames 21, and two ends of the positioning block 41 are respectively provided with a guide angle convenient for insertion installation into the insertion grooves 23, and two ends of two main support frames 21 are abutted and spliced together; the two positioning screws 42 pass through the first fixing plate 31, then the two positioning screws 42 pass through the two first inserting rods 32, the two ends of the two adjacent supporting rods 3 and the lower surfaces of the two main supporting frames 21 respectively, and the two positioning screws 42 are connected to the two ends of the positioning block 41 in a threaded manner, so that the heads of the positioning screws 42 are abutted against the first fixing plate 31, and the first fixing plate 31 is abutted against the two ends of the two supporting rods 3 to position the supporting rods 3.
Referring to fig. 2 and 3, the second positioning assembly 5 includes a positioning plate 51, two positioning bolts 52 and two positioning nuts 53, the positioning plate 51 is erected on the side wall of one side of each of the two adjacent sub-support frames 22 away from the main support frame 21, and two ends of the positioning plate 51 are respectively erected on two ends of each of the two adjacent sub-support frames 22; two positioning bolts 52 pass through the second fixing plate 33, then the two positioning bolts 52 pass through the two second inserting rods 34, the two support rods 3 and the two auxiliary support frames 22 respectively, and finally the two positioning bolts 52 pass through the positioning plate 51; the two positioning nuts 53 are screwed on the two positioning bolts 52, and the positioning nuts 53 abut against the positioning plate 51, so that the positioning plate 51 abuts against the lower surfaces of the two auxiliary supporting frames 22, and the heads of the positioning bolts 52 abut against the second fixing plate 33, thereby fixedly connecting the two adjacent auxiliary supporting frames 22 and the two adjacent supporting rods 3 together.
Referring to fig. 1 and 3, the bottom ends of two main support frames 21 and two auxiliary support frames 22 located at the lowest position are all placed on the arched bottom wall portion, the two auxiliary support frames 22 located at the lowest position are fixedly connected together through the fixing rod 6, the two ends of the fixing rod 6 abut against the side walls on the opposite sides of the two auxiliary support frames 22, meanwhile, the two auxiliary support frames 22 are all provided with fixing screws 61, and the fixing screws 61 horizontally penetrate through the side walls on the side where the auxiliary support frames 22 deviate from the fixing rod 6 and are in threaded connection with the fixing rod 6.
The working principle of the embodiment of the application is as follows:
the two ends of the positioning block 41 are inserted into the two insertion grooves 23, so that the two main support frames 21 are butted and spliced together, thereby fixedly connecting the multiple main support frames 21 together, so that the multiple main support frames 21 are supported on the arch part of the tunnel in a pressing manner, then the two ends of the two adjacent support rods 3 are butted together, then the first insertion rod 32 on the first fixing plate 31 is inserted into the two support rods 3, and then the two positioning screws 42 are screwed onto the positioning block 41 through the first fixing plate 31 and the support rods 3, thereby fixedly mounting the multiple support rods 3 and the multiple main support frames 21.
The second inserting rod 34 on the second fixing plate 33 is inserted and installed on two adjacent supporting rods 3, then the positioning bolt 52 penetrates through the second fixing plate 33, the supporting rods 3, the auxiliary supporting frames 22 and the positioning plate 51, then the positioning nut 53 is connected to the positioning bolt 52 in a threaded mode, the second fixing plate 33 is tightly abutted to one end of each of the two supporting rods 3, the positioning plate 51 is tightly abutted to the auxiliary supporting frame 22, the plurality of auxiliary supporting frames 22 and the plurality of supporting rods 3 are fixedly installed, finally the fixing rod 6 is abutted to the two adjacent auxiliary supporting frames 22, finally the fixing screw 61 penetrates through the auxiliary supporting frame 22 and is connected to the fixing rod 6 in a threaded mode, the bottom ends of the plurality of main supporting frames 21 and the auxiliary supporting frames 22 are abutted to the arched bottom wall portion, supporting is conducted on the tunnel, the supporting structure can be disassembled through reverse operation, and accordingly construction efficiency during tunnel excavation is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. Weak country rock super large section tunnel excavation supporting construction, its characterized in that: including supporting mechanism (2), supporting mechanism (2) includes:
the tunnel supporting device comprises a plurality of main supporting frames (21), wherein the main supporting frames (21) are detachably spliced together through a first positioning assembly (4) and are used for supporting a tunnel;
the auxiliary support frames (22) are detachably spliced together through the second positioning assembly (5) and are used for supporting the main support frame (21).
2. The weak surrounding rock oversized section tunnel excavation supporting structure of claim 1, characterized in that: inserting groove (23) have all been seted up on main tributary strut (21) both ends, first locating component (4) include:
the two ends of each positioning block (41) are inserted into the insertion grooves (23) of the two adjacent main support frames (21);
two positioning screws (42), wherein the two positioning screws (42) penetrate through the two main supporting frames (21) and are connected to the positioning block (41) in a threaded mode for positioning.
3. The weak surrounding rock oversized cross section tunnel excavation supporting structure of claim 2, characterized in that: and the positioning block (41) is provided with a guide angle which is convenient to be inserted and installed on the insertion groove (23).
4. The weak surrounding rock ultra-large section tunnel excavation supporting structure of claim 2, characterized in that: each main support frame (21) and each auxiliary support frame (22) are provided with a support rod (3), and two adjacent support rods (3) are abutted together at two ends to form a splayed shape.
5. The weak surrounding rock super large section tunnel excavation supporting construction of claim 4, characterized in that: the second positioning assembly (5) comprises:
the positioning plate (51) is erected on the side wall of one side, deviating from the main support frame (21), of each of the two auxiliary support frames (22);
the two positioning bolts (52), and the two positioning bolts (52) penetrate through the two auxiliary supporting frames (22) and the positioning plate (51);
the two positioning nuts (53) are in threaded connection with the two positioning bolts (52) and tightly abut against the positioning plate (51) for positioning.
6. The weak surrounding rock oversized cross section tunnel excavation supporting structure of claim 5, characterized in that: the utility model discloses a positioning bolt, including main support frame (21), be located peg graft on two adjacent bracing pieces (3) on the main support frame (21) and install first fixed plate (31) that are used for fixing, be located peg graft on two adjacent bracing pieces (3) on the auxiliary stay frame (22) and install second fixed plate (33) that are used for fixing, two positioning screw (42) pass first fixed plate (31) and support and press and fix a position on first fixed plate (31), and two positioning bolt (52) pass second fixed plate (33) and support and press and fix a position on second fixed plate (33).
7. The weak surrounding rock super large section tunnel excavation supporting construction of claim 4, characterized in that: the joint of the two main supporting frames (21) and the joint of the two auxiliary supporting frames (22) are arranged in a staggered manner.
8. The weak surrounding rock oversized section tunnel excavation supporting structure of claim 1, characterized in that: the two auxiliary support frames (22) positioned at the lowest position are fixedly connected together through a fixing rod (6), and the fixing rod (6) is detachably connected through a fixing screw (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197994.7U CN217632452U (en) | 2022-05-18 | 2022-05-18 | Weak surrounding rock super large section tunnel excavation supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197994.7U CN217632452U (en) | 2022-05-18 | 2022-05-18 | Weak surrounding rock super large section tunnel excavation supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217632452U true CN217632452U (en) | 2022-10-21 |
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ID=83654354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221197994.7U Active CN217632452U (en) | 2022-05-18 | 2022-05-18 | Weak surrounding rock super large section tunnel excavation supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217632452U (en) |
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2022
- 2022-05-18 CN CN202221197994.7U patent/CN217632452U/en active Active
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