CN109441476B - Existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction - Google Patents
Existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction Download PDFInfo
- Publication number
- CN109441476B CN109441476B CN201811568762.6A CN201811568762A CN109441476B CN 109441476 B CN109441476 B CN 109441476B CN 201811568762 A CN201811568762 A CN 201811568762A CN 109441476 B CN109441476 B CN 109441476B
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- China
- Prior art keywords
- support
- cross bars
- bars
- tunnel
- safety protection
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 230000009194 climbing Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides an existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction, which comprises a first support and a second support horizontally connected to one side of the upper end face of the first support, wherein the first support comprises a plurality of first cross bars and a plurality of vertical bars connected to the bottom face of the end part of the first cross bars, the second support comprises a plurality of second cross bars connected with the first support and a plurality of diagonal bars connected to the middle part of the second cross bars and used for supporting a tunnel arch wall, and telescopic bars are arranged at one ends of the first cross bars and the second cross bars close to the tunnel arch wall, so that horizontal support can be provided during tunnel construction, the stability of the rack is improved, surrounding rock deformation can be controlled, and construction safety is ensured; the top surface of the bench is paved by a steel plate, the periphery of the bench is provided with a protective net, the top surface of the bench is provided with a movable slag discharging port, the flexibility of the bench is fully utilized, the slag discharging efficiency is effectively improved, the construction efficiency is accelerated, the construction period is shortened, and the economic benefit is obvious.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a multifunctional safety protection rack for an existing tunnel in-situ extension tunnel construction.
Background
Currently, china has become the country with the largest number of tunnels, the most complex situation and the fastest growing world. In some densely populated large and medium cities or on highways with huge traffic flows, the transportation capacity of tunnels has become a bottleneck restricting traffic. In order to meet the increasingly severe traffic and transportation problems, existing tunnels are reconstructed and expanded to meet the traffic and transportation requirements, and the existing tunnels have become a necessary choice for the infrastructure of some places. At present, the research in the field of tunnel reconstruction and expansion is less at home and abroad, and the research on auxiliary equipment is also lacking. The prior bench used in tunnel engineering construction has single function and lower construction efficiency, is not suitable for the expansion construction of in-situ tunnels, cannot protect the existing tunnels which are already excavated in the construction process, cannot guarantee the safety of the construction of the bottom of the bench in the excavation process, and is not suitable for long-term development and use.
Disclosure of Invention
The invention provides a multifunctional safety protection rack for an existing tunnel in-situ extension tunnel construction, which has the advantages of perfect function, convenience in assembly, flexibility, simplicity and convenience, capability of improving the construction progress, shortening the construction period and effectively protecting the existing tunnel which is already excavated.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides an existing tunnel safety protection multifunctional rack of in situ extension tunnel construction, includes first support and horizontal connection in the second support of first support up end one side, first support includes a plurality of first horizontal poles and a plurality of montants of being connected in first horizontal pole tip bottom surface, the second support includes a plurality of second horizontal poles that are used for connecting first support to and a plurality of diagonal rods that are used for with tunnel arch wall support in the middle part of the second horizontal pole, telescopic link has been arranged near tunnel arch wall one end to first horizontal pole and second horizontal pole, the backup pad has all been arranged to first support and second support up end, and has seted up in the backup pad middle part and unloaded the cinder notch, it has been arranged to unload the cinder notch bottom.
Further, first reinforcing ribs are arranged between the parallel first cross bars and between the parallel vertical bars, second reinforcing ribs are arranged between the first cross bars and the vertical bars, and third reinforcing ribs are arranged between the parallel second cross bars and between the parallel diagonal bars.
Further, a baffle is arranged above the slag discharging port and is hinged with the supporting plate.
Further, the telescopic link is hydraulic telescopic link, and telescopic link tip has arranged the rubber pad.
Further, the first support upper structural member and the second support upper structural member, and the first support and the second support are connected through high-strength bolts, and the inclination angle of the diagonal rod on the second support is adjusted through the high-strength bolts.
Further, the edges of the upper end surfaces of the first bracket and the second bracket are vertically provided with a protective net.
Furthermore, the cat ladder is arranged on the outer side wall of the vertical rod, the roller is arranged at the bottom of the vertical rod, and the traction steel cable is arranged in the middle of the vertical rod.
According to the technical scheme, the invention has the following beneficial effects: the rack is formed by connecting a first bracket and a second bracket through high-strength bolts, so that the separation and combination of the left part and the right part can be realized, the longitudinal relative position of the left part and the right part can be changed, meanwhile, the two ends of the rack are provided with telescopic rods, horizontal support can be provided during tunnel construction, the stability of the rack is improved, surrounding rock deformation can be controlled, and the construction safety is ensured; the top surface of the rack is paved by a steel plate, the periphery of the rack is provided with a protective net, the protection to constructors on the rack and transportation personnel below the rack is better, the top surface of the rack is provided with a movable slag discharging port, the flexibility of the movable slag discharging port is fully utilized, the slag discharging efficiency is effectively improved, the construction efficiency is accelerated, the construction period is shortened, and the economic benefit is obvious.
Drawings
FIG. 1 is a front view of a gantry of the present invention;
FIG. 2 is a side view of a gantry;
FIG. 3 is a top view of the gantry;
FIG. 4 is a schematic view of a slag tap and a baffle of the gantry.
In the figure: 1. the device comprises a first bracket, 2, a second bracket, 3, a first cross rod, 4, a vertical rod, 5, a second cross rod, 6, an inclined rod, 7, a telescopic rod, 8, a supporting plate, 9, a slag discharging port, 10, a slag discharging groove, 11, a first reinforcing rib, 12, a second reinforcing rib, 13, a third reinforcing rib, 14, a baffle plate, 15, a protective net, 16, a cat ladder, 17, a roller, 18 and a high-strength bolt.
Detailed Description
The following describes in detail a preferred embodiment of the present tunnel safety protection multifunctional gantry for in-situ tunnel construction by extension with reference to the accompanying drawings.
As shown in fig. 1-3, an existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction comprises a first bracket 1 and a second bracket 2 horizontally connected to one side of the upper end face of the first bracket, wherein the first bracket 1 comprises a plurality of first cross bars 3 and a plurality of vertical bars 4 connected to the bottom surface of the end parts of the first cross bars, the second bracket 2 comprises a plurality of second cross bars 5 connected with the first bracket 1, and a plurality of diagonal bars 6 connected to the middle parts of the second cross bars and used for supporting a tunnel arch wall, structural members on the first bracket 1 and structural members on the second bracket 2, and the inclination angles of the diagonal bars 6 on the second bracket 2 are all adjusted through high-strength bolts 18, the separation and combination of the left part and the right part can be realized, the longitudinal relative positions of the diagonal bars can be changed, the subsequent disassembly is convenient, the first bracket 1 and the second bracket 2 are sent into the tunnel after the connection is completed, the diagonal bars 6 are adjusted through the high-strength bolts, the end parts of the diagonal bars 6 are contacted with the tunnel arch wall, and the purpose of supporting the second bracket 2 is further improved;
The telescopic rods 7 are arranged at one ends of the first transverse rod and the second transverse rod, close to the arch wall of the tunnel, after the first transverse rod and the second transverse rod reach the preset positions, the end parts of the telescopic rods are in contact with the rock wall, horizontal constraint is applied to the tunnel through the telescopic rods 7 at the two ends of the rack, horizontal support is provided, the rack is prevented from shaking left and right, surrounding rock deformation generated after the tunnel is excavated can be controlled, construction safety is guaranteed, the telescopic rods 7 are hydraulic telescopic rods, rubber pads are arranged at the end parts of the telescopic rods, and the rubber pads can effectively improve friction force between the telescopic rods and the rock wall and avoid sliding;
As shown in fig. 4, the upper end surfaces of the first bracket 1 and the second bracket 2 are respectively provided with a supporting plate 8, rocks can be prevented from falling off in the tunneling process by using the supporting plates, meanwhile, the edges of the upper end surfaces of the first bracket 1 and the second bracket 2 are vertically provided with a protective net 15, so that the construction convenience is improved while the safety of constructors is improved, the middle part of the supporting plate 8 is provided with a slag discharging port 9, the bottom end of the slag discharging port 9 is provided with a slag discharging groove 10, a baffle 14 is arranged above the slag discharging port 9, the baffle is hinged with the supporting plate 8, the baffle 14 is closed in tunnel excavation, the baffle 14 is opened in slag discharging operation, and an operation vehicle of the operation vehicle is parked at the bottom of the slag discharging groove 10, so that the slag discharging efficiency is greatly improved, the construction progress is effectively improved, and the construction period is shortened;
A first reinforcing rib 11 is arranged between the first parallel cross bars 3 and between the vertical bars 4, the first reinforcing rib 11 is used as a connecting member between the two first cross bars 3 and between the two vertical bars 4, so that the parallel angle stability of the first parallel cross bars and the vertical bars is improved, racks with different lengths are assembled through the first reinforcing rib 11, the first cross bars 3 and the vertical bars 4 according to different places, a second reinforcing rib 12 is arranged between the first cross bars 3 and the vertical bars 4 which are connected, the vertical angle stability between the first cross bars 3 and the vertical bars 4 is improved by the second reinforcing rib 12, a third reinforcing rib 13 is arranged between the second parallel cross bars 5 and between the inclined bars 6, and the third reinforcing rib 13 is used as the parallel angle stability between the second parallel cross bars 5 and the inclined bars 6;
Meanwhile, the outer side wall of the vertical rod 4 is provided with a crawling ladder 16, constructors can conveniently climb onto the top surface of the rack smoothly, the bottom of the vertical rod 4 is provided with rollers 17, the middle of the vertical rod 4 is provided with a traction steel rope, a sliding rail is arranged in an existing tunnel, the rollers 17 can drive the rack to move by traction of the traction steel rope, flexibility of the rack is improved, horizontal force is generated after the telescopic rod is fixed with the arch wall, the rack cannot move back and forth, and accordingly safety of construction is improved.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (4)
1. The utility model provides an existing tunnel safety protection multifunctional rack of in situ extension tunnel construction which characterized in that: the device comprises a first support (1) and a second support (2) horizontally connected to one side of the upper end face of the first support, wherein the first support (1) comprises a plurality of first cross bars (3) and a plurality of vertical bars (4) connected to the bottom face of the end part of the first cross bars, the second support (2) comprises a plurality of second cross bars (5) used for connecting the first support (1) and a plurality of diagonal bars (6) connected to the middle part of the second cross bars and used for supporting a tunnel arch wall, the telescopic bars (7) are arranged at one ends, close to the tunnel arch wall, of the first cross bars and the second cross bars, supporting plates (8) are arranged at the upper end faces of the first support (1) and the second support (2), slag discharging ports (9) are formed in the middle of the supporting plates (8), and slag discharging grooves (10) are formed in the bottom ends of the slag discharging ports (9).
The first support (1) is connected with the upper structural part of the second support (2) through high-strength bolts (18), and the inclination angle of the inclined rod (6) on the second support (2) is adjusted through the high-strength bolts;
the edges of the upper end surfaces of the first bracket (1) and the second bracket (2) are vertically provided with a protective net (15);
the climbing ladder is characterized in that a ladder stand (16) is arranged on the outer side wall of the vertical rod (4), rollers (17) are arranged at the bottom of the vertical rod (4), and a traction steel cable is arranged in the middle of the vertical rod (4).
2. The multifunctional safety protection rack for an existing tunnel in-situ extension tunnel construction according to claim 1, wherein the multifunctional safety protection rack is characterized in that: first reinforcing ribs (11) are arranged between the parallel first cross bars (3) and between the parallel vertical bars (4), second reinforcing ribs (12) are arranged between the first cross bars (3) and the vertical bars (4), and third reinforcing ribs (13) are arranged between the parallel second cross bars (5) and between the parallel diagonal bars (6).
3. The multifunctional safety protection rack for an existing tunnel in-situ extension tunnel construction according to claim 1, wherein the multifunctional safety protection rack is characterized in that: a baffle (14) is arranged above the slag discharging opening (9), and the baffle is hinged with the supporting plate (8).
4. The multifunctional safety protection rack for an existing tunnel in-situ extension tunnel construction according to claim 1, wherein the multifunctional safety protection rack is characterized in that: the telescopic rod (7) is a hydraulic telescopic rod, and a rubber pad is arranged at the end part of the telescopic rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568762.6A CN109441476B (en) | 2018-12-21 | 2018-12-21 | Existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568762.6A CN109441476B (en) | 2018-12-21 | 2018-12-21 | Existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441476A CN109441476A (en) | 2019-03-08 |
| CN109441476B true CN109441476B (en) | 2024-04-26 |
Family
ID=65559734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568762.6A Active CN109441476B (en) | 2018-12-21 | 2018-12-21 | Existing tunnel safety protection multifunctional rack for in-situ extension tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441476B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044364A (en) * | 2002-05-20 | 2004-02-12 | Ando Corp | Continuous construction method for tunnel block |
| CN202039857U (en) * | 2011-03-16 | 2011-11-16 | 中铁隧道集团四处有限公司 | Lifting type tunnel excavation support operation rack |
| CN105822311A (en) * | 2016-05-17 | 2016-08-03 | 中铁十五局集团有限公司 | In-situ extension construction structure and method for extra-large-section tunnel with opening formed inside to enlarge working face |
| CN206448820U (en) * | 2017-01-06 | 2017-08-29 | 董景印 | A kind of tunnel construction trolley |
| CN209385140U (en) * | 2018-12-21 | 2019-09-13 | 中铁四局集团有限公司 | A kind of existing tunnel security protection Multifunctional bench of enlarging constructing tunnel in situ |
-
2018
- 2018-12-21 CN CN201811568762.6A patent/CN109441476B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044364A (en) * | 2002-05-20 | 2004-02-12 | Ando Corp | Continuous construction method for tunnel block |
| CN202039857U (en) * | 2011-03-16 | 2011-11-16 | 中铁隧道集团四处有限公司 | Lifting type tunnel excavation support operation rack |
| CN105822311A (en) * | 2016-05-17 | 2016-08-03 | 中铁十五局集团有限公司 | In-situ extension construction structure and method for extra-large-section tunnel with opening formed inside to enlarge working face |
| CN206448820U (en) * | 2017-01-06 | 2017-08-29 | 董景印 | A kind of tunnel construction trolley |
| CN209385140U (en) * | 2018-12-21 | 2019-09-13 | 中铁四局集团有限公司 | A kind of existing tunnel security protection Multifunctional bench of enlarging constructing tunnel in situ |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441476A (en) | 2019-03-08 |
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