CN209195451U - A kind of rock tunnel(ling) machine tunneling arc plate - Google Patents
A kind of rock tunnel(ling) machine tunneling arc plate Download PDFInfo
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- CN209195451U CN209195451U CN201821919828.7U CN201821919828U CN209195451U CN 209195451 U CN209195451 U CN 209195451U CN 201821919828 U CN201821919828 U CN 201821919828U CN 209195451 U CN209195451 U CN 209195451U
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- lath
- thin plate
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- vertical muscle
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Abstract
The utility model discloses a kind of rock tunnel(ling) machine tunneling arc plate, solve the problems, such as that tunnel support supporting effect is poor in the prior art, low efficiency.The utility model includes lath and steel bar, and the side of lath is arranged in steel bar, and the splicing of several laths is in the arc-shaped, and the lath includes thin plate and vertical muscle, and vertical muscle is fixed at the lower surface of thin plate.The utility model solves open type TBM tunnel vault slag under the conditions of broken, rich water breaking surrounding rock；It can reduce and face sky because slag arch is formed, arch is caused to cave in, reduce subsequent scarfing cinder work, reduce the chamber grouting amount that collapses；Conducive to TBM rapid construction, construction safety coefficient is improved.
Description
Technical field
The utility model relates to technical field of tunnel construction, particularly relate to a kind of rock tunnel(ling) machine tunneling arc plate.
Background technique
In the construction process, when encountering weak broken poor strata, once country rock is shield out, without shell by open type TBM
Supporting role, country rock formation faces sky, rubble, dregs will a large amount of slumps, or even cause big landslide, seriously affect construction peace
Entirely and efficiency.
In recent years due to the application of reinforcing bar drainage technique, greatly reduce landslide falling rocks problem when TBM is excavated, but extremely broken
Broken, rich water broken formation is in application, still there is many difficulties.Major embodiment are as follows: reinforcing bar is arranged generally by three to four reinforcement weldings
It forms, there are certain gap between reinforcing bar and reinforcing bar, multiple reinforcing bar rows can not form complete circular arc.It is smashed to pieces (or stream
Sand, sand) stratum driving when, even if along hole wall circumferential direction supporting reinforcing bar row, still have a large amount of rubbles along reinforcing bar row gap fall,
Cavity is formed at reinforcing bar row back, easily causes landslide, influences construction safety and the scarfing cinder of subsequent construction bottom, top backfill grouting amount
Greatly, if meeting the generation that rich water more aggravates the above unfavorable condition.
Utility model content
For the deficiency in above-mentioned background technique, the utility model proposes a kind of rock tunnel(ling) machine tunneling arc plate and
Its method for protecting support solves the problems, such as that tunnel support supporting effect is poor in the prior art, low efficiency.
The technical solution of the utility model is achieved in that a kind of rock tunnel(ling) machine tunneling arc plate, including plate
The side of lath is arranged in item and steel bar, steel bar, and the splicing of several laths is in the arc-shaped, and the lath includes thin plate and vertical muscle,
Vertical muscle is fixed at the lower surface of thin plate.
Thin plate is stretched out in one end of the vertical muscle, and the other end of thin plate stretches out vertical muscle.
Groove width of the width of the lath no more than the lath holding tank in shield body.
A kind of method for protecting support of rock tunnel(ling) machine tunneling arc plate, includes the following steps: S1: lath is sequentially placed
In lath holding tank in shield body, the thin plate of lath is towards breaking surrounding rock；
S2: building steel arch-shelf in breaking surrounding rock, and one end that muscle stretching is indulged on lath is compacted to by steel arch-shelf has excavated
On the wall of hole；
S3: when rock tunnel(ling) machine tunnels forward, lath is drawn out lath holding tank, and lath is using shield body, steel arch-shelf as fulcrum
Simple beam structure is formed, breaking surrounding rock weight is undertaken；
S4: when first lath positioned at front end will be disengaged from shield body or just be detached from shield body, being inserted into second lath, the
Two laths and first lath are indulged in end and form overlap joint at muscle stretching, in the assembled second ring steel arch-shelf of lap-joint, the second ring
By second lath and first lath, stretching forms new simple beam structure on having excavated hole wall to steel arch-shelf simultaneously；
S5: repeating step S3 ~ S4, completes tunnel along axial continuous carry out supporting；
S6: in step s 5, encountering easily broken and water burst stratum, the small gaps between circumferentially-adjacent two laths
Middle filling steel bar is simultaneously welded and fixed with lath, and multiple laths are connected into complete arc plate, forms complete shell support and protects
Shield.
The utility model, so that the supporting construction is light, is easily installed supporting by breaking the whole up into parts to arc plate；It is mounted on
Complete circular arc slab supporting can be formed after the wall of hole, supporting effect is more preferable.Lath and shield, which exist, to be overlapped, and the country rock of shield body is vertical out
It is in the supporting range of lath, improves supporting safety.The utility model solves open type TBM and is crushed in broken, rich water
Tunnel vault slag under wall rock condition；It can reduce and face sky because slag arch is formed, cause arch to cave in, reduce subsequent clinkerer
Make, reduces the chamber grouting amount that collapses；Conducive to TBM construction, construction safety coefficient is improved.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of the utility model embodiment
It is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the utility model battened construction schematic diagram；
Fig. 2 is that the utility model lath stores schematic diagram；
Fig. 3 is lath support principle schematic diagram；
Fig. 4 is that supporting lath overlaps effect diagram；
Fig. 5 is that lath and steel bar form housings close supporting schematic diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figs. 1-2, embodiment 1, a kind of rock tunnel(ling) machine tunneling arc plate, including lath 7 and steel bar 8, steel
The side of lath 7 is arranged in item 8, according to stratum crushing and water burst situation, can fill steel bar 8 in the small gaps between lath,
And steel bar and lath are welded and fixed, multiple laths can be connected into complete arc plate by steel bar 8, are formed complete shell and are protected
Shield, reduction arch falling rocks, water burst take silt out of, arch are caused to collapse.Several laths 7 splice in the arc-shaped, formation tubular letter
Support, the lath 7 include thin plate 1 and vertical muscle 2, and vertical muscle 2 is fixed at the lower surface of thin plate 1, thin plate 1 and breaking surrounding rock phase
It is right, prevent small crushed stone or dregs from falling.
As shown in Figure 1, further, thin plate 1 is stretched out in one end of the vertical muscle 2, the other end of thin plate 1 stretches out vertical muscle 2.It is axial
Two adjacent laths of front and back form overlap joint by the vertical muscle of the thin plate and stretching that stretch out, convenient for positioning and connection, the vertical muscle 2
Distance L1=200mm of thin plate 1 is stretched out, thin plate 1 stretches out distance L2=200mm of vertical muscle 2.
As in Figure 3-5, further, groove width of the width of the lath 7 no more than the lath holding tank 4 in shield body 3, root
According to the groove width of lath reserve tank, design the width of the thin plate of lath, be subject to lath can the smooth pull in lath holding tank,
Thin plate 1 is thin plate or thin mesh sheet, and 3 ~ 4 vertical muscle 2 disposed in parallel are generally arranged on thin plate 1, indulges muscle 2 and welds with thin plate 1.
As described in figures 1 and 5, embodiment 2, a kind of rock tunnel(ling) machine tunneling arc plate, indulge muscle 2 stretch out thin plate 1 away from
From L1=260mm, thin plate 1 stretches out distance L2=260mm of vertical muscle 2, a kind of supporting side of rock tunnel(ling) machine tunneling arc plate
Method includes the following steps: S1: lath 7 being placed sequentially in the lath holding tank 4 in shield body 3, the thin plate 1 of lath 7 is towards broken
Broken country rock 6；
S2: building steel arch-shelf 5 in breaking surrounding rock 6, and one end that muscle 2 stretches out is indulged on lath 7 and is compacted to by steel arch-shelf 5
It excavates on the wall of hole；
S3: when rock tunnel(ling) machine tunnels forward, lath 7 is drawn out lath holding tank 4, and lath 7 is with shield body 3, steel arch-shelf 5
Fulcrum forms simple beam structure, undertakes breaking surrounding rock weight；Adjacent multiple lath thin plates block breaking surrounding rock outside thin plate
Side, only there are small gaps between lath, greatly reduce dregs and fall into hole；
S4: it when first lath positioned at front end will be disengaged from shield body or just be detached from shield body, is inserted from the other end of shield body 3
Enter second lath, second lath and first lath are indulged in end and form overlap joint at muscle stretching, build second in lap-joint
Ring steel arch-shelf 5, by second lath and first lath, stretching is formed new the second ring steel arch-shelf 5 on having excavated hole wall simultaneously
Simple beam structure；
S5: repeating step S3 ~ S4, completes tunnel along axial continuous carry out supporting.TBM is constantly tunneled forward, is successively followed
Ring installs lath, steel arch-shelf, along the axial constantly progress supporting in tunnel.
S6: in step s 5, encountering easily broken and water burst stratum, the narrow seam between circumferentially-adjacent two laths 7
Steel bar 8 is filled in gap and is welded and fixed with lath, multiple laths are connected into complete arc plate, forms complete shell support
Protection, reduction arch falling rocks, water burst take silt out of, arch are caused to collapse.
Other structures are same as Example 1.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. a kind of rock tunnel(ling) machine tunneling arc plate, it is characterised in that: including lath (7) and steel bar (8), steel bar (8) is set
The side in lath (7) is set, the splicing of several laths (7) is in the arc-shaped, and the lath (7) includes thin plate (1) and vertical muscle (2),
Vertical muscle (2) are fixed at the lower surface of thin plate (1).
2. rock tunnel(ling) machine tunneling arc plate according to claim 1, it is characterised in that: the one of the vertical muscle (2)
Thin plate (1) is stretched out at end, and the other end of thin plate (1) stretches out vertical muscle (2).
3. rock tunnel(ling) machine tunneling arc plate according to claim 1 or 2, it is characterised in that: the lath (7)
Groove width of the width no more than the lath holding tank (4) on shield body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919828.7U CN209195451U (en) | 2018-11-21 | 2018-11-21 | A kind of rock tunnel(ling) machine tunneling arc plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919828.7U CN209195451U (en) | 2018-11-21 | 2018-11-21 | A kind of rock tunnel(ling) machine tunneling arc plate |
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| Publication Number | Publication Date |
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| CN209195451U true CN209195451U (en) | 2019-08-02 |
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| CN201821919828.7U Active CN209195451U (en) | 2018-11-21 | 2018-11-21 | A kind of rock tunnel(ling) machine tunneling arc plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372557A (en) * | 2018-11-21 | 2019-02-22 | 中铁工程装备集团有限公司 | A kind of rock tunnel(ling) machine tunneling arc plate and its method for protecting support |
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2018
- 2018-11-21 CN CN201821919828.7U patent/CN209195451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372557A (en) * | 2018-11-21 | 2019-02-22 | 中铁工程装备集团有限公司 | A kind of rock tunnel(ling) machine tunneling arc plate and its method for protecting support |
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