CN212837813U - Open type TBM telescopic anti-rock burst containment vessel - Google Patents
Open type TBM telescopic anti-rock burst containment vessel Download PDFInfo
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- CN212837813U CN212837813U CN202021808776.3U CN202021808776U CN212837813U CN 212837813 U CN212837813 U CN 212837813U CN 202021808776 U CN202021808776 U CN 202021808776U CN 212837813 U CN212837813 U CN 212837813U
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Abstract
The utility model discloses an open TBM telescopic anti-rock burst containment vessel, which comprises a first protection part, a second protection part and a third protection part, wherein the first protection part is used for protecting the rear part of a shield of a cutter head of the open TBM; a second guard for protecting the open TBM support shoe to the equipment bridge; a power part and a guide part; the first protection part slides back and forth above the second protection part through the guide part under the action of the power part. The utility model provides better safety protection for the part from the tail end of the open type TBM shield to the bridge part of the frame, when rock burst is predicted or about to occur, the first protective steel plate at the front end is completely extended out, and the rapid tunneling can be realized on the premise of ensuring the safety of constructors; meanwhile, the first protective steel plate is of a telescopic structure, normal operation of equipment such as an advanced drilling machine, a steel arch erector, a roof-bolter and an emergency spraying and mixing device which are carried on the TBM is not affected, construction safety of the open TBM at a rock burst section which is easy to generate holes can be improved, safety of personnel and equipment is guaranteed, and tunneling efficiency is improved.
Description
Technical Field
The utility model relates to an uncovered TBM construction technology especially relates to a telescopic anti-rock burst containment of open TBM.
Background
With the rapid development of underground engineering construction technology, the TBM technology is increasingly applied to the construction of long and large tunnels. In the tunnel construction process, sometimes a tunnel section with large buried depth, high ground stress and good rock integrity is encountered, and rock burst is very easy to occur at the moment. The tunnel rock burst is mainly concentrated in the range of 120 degrees of a top arch and mainly shows the forms of rib spalling, falling, ejection and the like. The tunnel rock burst not only seriously threatens the safety of constructors and equipment, but also influences the construction progress and increases the construction cost.
Due to the specific structure and working mode of the open type TBM, compared with a shield type TBM, a supporting construction space is exposed, so that the safety threat to constructors is large, and rock burst is frequently generated in high ground stress areas. At present, measures commonly adopted for preventing rock burst include steel arch frames, reinforcing steel bar rows, high-strength concrete spraying and the like, and the protection methods are low in construction speed and high in construction cost, so that unnecessary cost and waste of construction period are caused. Therefore, it is necessary to design a rock burst prevention device for an open type TBM.
Disclosure of Invention
An object of the utility model is to provide a telescopic anti-rock burst containment of open type TBM to the defect that prior art exists.
In order to achieve the above purpose, the utility model can adopt the following technical proposal:
open-type TBM telescopic anti-rock burst containment vessel, include:
the first protection part is used for protecting the rear part of the open type TBM cutter head shield;
a second guard for protecting the open TBM support shoe to the equipment bridge;
a power section;
a guide portion;
the first protection part slides back and forth above the second protection part through the guide part under the action of the power part.
The utility model discloses a first protection part includes:
a first protective steel plate for protecting the first side of the steel plate,
a first support rib plate for supporting the first support rib plate,
the first supporting rib plates are welded on the inner surface of the first protection steel plate at intervals and provide support for the first protection steel plate.
The protection range of the first protection steel plate is 120 degrees +/-5 degrees; the plate surface is provided with a plurality of circular through holes.
The utility model discloses a second protection part includes:
a second protective steel plate for protecting the steel plate,
a second support rib plate for supporting the first support rib plate,
a plurality of support bar frames;
the second support rib plates are welded on the inner surface of the second protection steel plate at intervals to provide support for the second protection steel plate;
one end of the support rod frame is welded on the inner surface of the second protective steel plate, and the other end of the support rod frame is connected with the TBM rack.
The protection range of the second protection steel plate is 180-240 degrees.
In practice, the first and second armor plates may have a circular arc, elliptical arc, or polygonal cross-section, with a top having a slope of about 1: 50.
The utility model discloses a power portion is including flexible hydro-cylinder, the cylinder of flexible hydro-cylinder link firmly in on the second protection portion, its piston rod with first protection portion is articulated mutually.
The utility model discloses a guide part includes:
a T-shaped beam, wherein the T-shaped beam is provided with a plurality of T-shaped grooves,
a pair of L-shaped beams having a pair of,
a slide block, the material can select engineering plastic alloy;
a sliding plate is arranged on the top of the sliding plate,
the L-shaped beams are oppositely welded on the inner side of the first protection part at intervals to form a sliding chute, and the sliding plate is welded at the bottom of the sliding chute;
the bottom of a vertical plate of the T-shaped beam is fixedly connected with the outer side of the second protection part, a transverse plate at the upper part of the T-shaped beam is inserted into the sliding groove, and the sliding block is connected to the transverse plate through a bolt;
the sliding plate is in sliding fit with the sliding block.
And a first protection part positioning device is arranged at the rear part of the cutter head shield.
The first protection positioning device is a positioning steel plate which is welded at the rear side opening of the cutter shield and has a V-shaped backward section.
The utility model has the advantages that: the telescopic anti-rock burst containment provides good safety protection for the part from the tail end of the open type TBM shield to the bridge of the frame, when rock burst is predicted or about to occur, the first protection steel plate at the front end extends out completely, and rapid tunneling can be realized on the premise of ensuring the safety of constructors; meanwhile, the first protective steel plate is of a telescopic structure, normal operation of equipment such as an advanced drilling machine, a steel arch erector, a roof-bolter and an emergency spraying and mixing device which are carried on the TBM is not affected, construction safety of the open TBM at a rock burst section which is easy to generate holes can be improved, safety of personnel and equipment is guaranteed, and tunneling efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged sectional view taken along line a-a of fig. 1.
Fig. 3 is an enlarged view of a portion I of fig. 2.
Fig. 4 is an enlarged view of a portion J in fig. 1.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings so as to facilitate understanding for those skilled in the art.
It should be noted that, in the description of the present invention, the terms "front", "back", "inside", "outside", "upper", "lower" and "horizontal", "vertical" indicate the orientation and position relationship based on the drawings, which are used to help those skilled in the art understand the present application and should not be construed as limiting the technical solution of the present application.
As shown in figure 1, the telescopic anti-rock burst containment of open-type TBM, include:
the first protection part 1 is used for protecting the rear part of the open type TBM cutter head shield;
a second guard part 2 for protecting the open TBM support shoe to the equipment bridge;
a power section 3;
a guide part 4;
the first guard part 1 slides back and forth over the second guard part 2 by the guide part 4 under the action of the power part 3.
Specifically, as shown in fig. 1 and 2:
the utility model discloses a first protection part includes: the first protection steel plate 101, first support rib plate 102 interval welding are at first protection steel plate 101 internal surface, provide the support for first protection steel plate. Preferably, the protection range of the first protection steel plate 101 is about 120 °; the plate surface is provided with a plurality of circular through holes.
The utility model discloses a second protection part includes: a second protective steel plate 201, a second support rib plate 202, a plurality of (four in the present application) support rod frames 203; the second support rib plates 202 are welded on the inner surface of the second protection steel plate 201 at intervals to provide support for the second protection steel plate 201; one end of the support rod frame 203 is welded on the inner surface of the second protective steel plate 201, and the other end thereof is connected with the TBM frame. Preferably, the protection range of the second protection steel plate 201 is 180-240 °.
In actual manufacturing, the cross section of the first protection steel plate 101 and the second protection steel plate 201 can be arc-shaped, elliptic arc-shaped or polygonal, and the top of the first protection steel plate and the second protection steel plate keeps an inclination of about 1:50, so that falling rocks are prevented from being clamped between the rock wall and the containment vessel and can smoothly fall below the TBM.
The utility model discloses a power portion 3 includes telescopic cylinder 301 (this application adopts two), and telescopic cylinder 301's cylinder links firmly on second protection steel sheet 201, and its piston rod is articulated mutually with first protection steel sheet 101.
The utility model discloses a guide part 4 is as shown in fig. 3 (this application adopts five groups) to a set of example, its structure includes: a T-beam 401, a pair of L-beams 402, a slide 403 (made of engineering plastic alloy, as an alternative), a slide 404 (made of stainless steel); a pair of L-shaped beams 402 are welded on the inner surface of the first protective steel plate 101 at intervals in an opposite direction to form a sliding chute, and a sliding plate 404 is welded at the bottom of the sliding chute; the bottom of the vertical plate of the T-shaped beam 401 is welded with the outer surface of the second protective steel plate 201, the transverse plate at the upper part of the T-shaped beam is inserted into the sliding groove, and the sliding block 403 is fixedly connected to the transverse plate of the T-shaped beam 401 through a bolt; when the first protection steel plate 101 moves back and forth, the sliding plate 404 and the sliding block 403 are in sliding fit, so that effective support is provided for the first protection steel plate 101, and the friction coefficient can be reduced. Meanwhile, the T-shaped beams 401 and the second support rib plates 202 respectively increase the longitudinal and circumferential strength and rigidity of the second protective steel plate 201; the L-beam 402 and the first support rib 102 increase the strength and rigidity of the first armor plate 101 in the longitudinal and circumferential directions, respectively.
The rear part of the cutter head shield is provided with a first protection part positioning device, and the specific structure is as shown in fig. 4: the V-shaped positioning steel plate 5 (arranged according to the radian of the first protection steel plate 101) with the backward opening is welded on the rear side of the cutter shield 1001, and when the first protection steel plate 101 extends forwards, the first protection steel plate 101 is overlapped in the groove of the V-shaped positioning steel plate 5, so that the first protection steel plate 101 can be effectively supported.
Adopt the utility model discloses a method that telescopic anti-rock burst containment protected the rockburst does:
before construction, a support rod frame 203 of a second protection part of the telescopic anti-rock burst containment vessel is fixedly connected to a rack from a TBM supporting shoe to an equipment bridge, and a first protection steel plate 101 can slide back and forth above a second protection steel plate 201;
when the open type TBM tunnels to a tunnel section where rock burst is likely to occur, the telescopic oil cylinder 301 pushes the first protection steel plate 101 to extend forwards, the front end of the first protection steel plate 101 is lapped in a groove of the V-shaped positioning steel plate 5 at the rear part of the cutter head shield to be positioned, broken stone generated by the rock burst slides down along two sides of the first protection steel plate 101 and the second protection steel plate 201 to fall into the bottom of the tunnel, and is conveyed out of the tunnel by a belt conveyor through manual cleaning, so that quick tunneling is realized on the premise of safety of constructors;
when the open TBM is tunneled to a weak crushing zone:
when anchor rod supporting is needed, the telescopic oil cylinder 301 pushes the first protective steel plate 101 to extend forwards, the front end of the first protective steel plate 101 is lapped in a groove of the V-shaped positioning steel plate 5 at the rear part of the cutter head shield for positioning, and an anchor rod is arranged on the anchor rod drilling machine through a circular through hole formed in the first protective steel plate 101;
when a steel arch support is needed, the telescopic oil cylinder 301 pushes the first protective steel plate 101 to a position 50-60 cm away from the cutter head shield, and the steel arch is installed through a steel arch installer;
when the reinforcing mesh support is needed, the first protection steel plate 101 is completely or partially retracted to vacate the reinforcing mesh support
The space is convenient for constructors to work.
Claims (9)
1. An open type TBM telescopic rockburst-proof containment vessel is characterized in that: the method comprises the following steps:
the first protection part is used for protecting the rear part of the open type TBM cutter head shield;
a second guard for protecting the open TBM support shoe to the equipment bridge;
a power section;
a guide portion;
the first protection part moves back and forth outside the second protection part through the guide part under the action of the power part.
2. The open-type TBM telescopic rockburst containment vessel of claim 1, wherein:
the first guard portion includes:
a first protective steel plate for protecting the first side of the steel plate,
a first support rib plate for supporting the first support rib plate,
the first supporting rib plates are welded on the inner surface of the first protection steel plate at intervals and provide support for the first protection steel plate.
3. The open-type TBM telescopic rockburst containment vessel of claim 2, wherein:
the protection range of the first protection steel plate is 120 degrees +/-5 degrees; the plate surface is provided with a plurality of circular through holes.
4. The open-type TBM telescopic rockburst containment vessel of claim 1, wherein: the second guard portion includes:
a second protective steel plate for protecting the steel plate,
a second support rib plate for supporting the first support rib plate,
a plurality of support bar frames;
the second support rib plates are welded on the inner surface of the second protection steel plate at intervals to provide support for the second protection steel plate;
one end of the support rod frame is welded on the inner surface of the second protective steel plate, and the other end of the support rod frame is connected with the TBM rack.
5. The open-type TBM telescopic rockburst containment vessel of claim 4, wherein: the protection range of the second protection steel plate is 180-240 degrees.
6. The open-type TBM telescopic rockburst containment vessel of claim 1, wherein:
the power part comprises a telescopic oil cylinder, a cylinder barrel of the telescopic oil cylinder is fixedly connected to the second protection part, and a piston rod of the telescopic oil cylinder is hinged to the first protection part.
7. The open-type TBM telescopic rockburst containment vessel of claim 1, wherein: the guide portion includes:
a T-shaped beam, wherein the T-shaped beam is provided with a plurality of T-shaped grooves,
a pair of L-shaped beams having a pair of,
a slide block, a first slide block and a second slide block,
a sliding plate is arranged on the top of the sliding plate,
the L-shaped beams are oppositely welded on the inner side of the first protection part at intervals to form a sliding chute, and the sliding plate is welded at the bottom of the sliding chute;
the bottom of a vertical plate of the T-shaped beam is fixedly connected with the outer side of the second protection part, a transverse plate at the upper part of the T-shaped beam is inserted into the sliding groove, and the sliding block is connected to the transverse plate through a bolt;
the sliding plate is in sliding fit with the sliding block.
8. The open-type TBM telescopic rockburst containment vessel of claim 1, wherein: a first protection part positioning device is arranged on the rear side of the cutter head shield.
9. The open-type TBM telescopic rockburst containment vessel of claim 8, wherein: the first protection positioning device is a positioning steel plate which is welded at the rear side opening of the cutter shield and has a V-shaped backward section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021808776.3U CN212837813U (en) | 2020-08-26 | 2020-08-26 | Open type TBM telescopic anti-rock burst containment vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021808776.3U CN212837813U (en) | 2020-08-26 | 2020-08-26 | Open type TBM telescopic anti-rock burst containment vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212837813U true CN212837813U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021808776.3U Active CN212837813U (en) | 2020-08-26 | 2020-08-26 | Open type TBM telescopic anti-rock burst containment vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212837813U (en) |
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2020
- 2020-08-26 CN CN202021808776.3U patent/CN212837813U/en active Active
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