CN109372525B - TBM shield rolling and sliding type combined walking device and method - Google Patents
TBM shield rolling and sliding type combined walking device and method Download PDFInfo
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- CN109372525B CN109372525B CN201811142017.5A CN201811142017A CN109372525B CN 109372525 B CN109372525 B CN 109372525B CN 201811142017 A CN201811142017 A CN 201811142017A CN 109372525 B CN109372525 B CN 109372525B
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- 238000005096 rolling process Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 235000014121 butter Nutrition 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- 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)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention provides a TBM shield rolling sliding type combined walking device and a method, which comprises a bottom plate arranged at the bottom of a tunnel excavation section, wherein an anchor plate is fixedly arranged on the bottom plate through an anchor bolt, a roller path is fixedly arranged on the anchor plate through an inner rod piece, slide rails are symmetrically fixed on the anchor plate at two sides of the roller path, and anti-rolling support rails are symmetrically fixed on the anchor plate at two outer sides of the slide rails through an outer rod piece; a plurality of rolling rods are prevented from being arranged on the sliding rail through rolling matching support; and a front shield of the TBM shield body is supported at the tops of the roller path, the sliding rail and the anti-rolling supporting rail. The device solves the difficult construction problem that the shield body of the TBM is difficult to slide and walk in a tunnel with narrow space. The method can be widely applied to construction of similar projects such as water conservancy tunnels.
Description
Technical Field
The invention relates to the field of shield body hole dismounting devices, in particular to a TBM shield body rolling sliding type combined walking device and method.
Background
The diameter of a tunneling hole of the TBM is 8.13m, the center height of the hole is 4.065m, a gap of only 35mm is formed between a front shield shell and the hole wall, and a gap of only 80mm is formed between a support shield and the hole wall. In such a small excavation hole, it is impossible to remove the shield body part of the TBM excavator, so the shield body must be moved from the excavation hole with the hole diameter of 8.13m, slid by 20m, and moved into an urban portal type expanded excavation hole with the hole top height of 14.2 m. In the expanded excavation, the bottom of the hole is a plane, which can not meet the requirement that the wear-resistant sliding plate at the bottom of the anterior shield and the support shield can walk in a circle with the diameter of 8.13 m.
The TBM shield body mainly comprises a cutter head, a front shield, an inner telescopic shield, an outer telescopic shield, a support shield, a finger-shaped shield, a main beam and other members, wherein the front shield and the support shield are equivalent to two support legs of the TBM. The shield body of the TBM is about 18m in total length and weighs about 680 tons. The 680 tons weight of the shield body is borne by an anterior shield and a support shield, wherein the anterior shield is 1780mm long, bears 400 tons of load, and generates 1118 (Kg/cm) of average linear pressure on the sliding rail. The support shield is 3000mm long, bears 280 tons of load, and generates 467 (Kg/cm) of average linear pressure to the slide rail. The linear pressure generated by the front shield and the support shield to the steel slide is too large, and the slide rail cannot bear the pressure. In addition, the shield body with the diameter of 8.06m, the length of about 18m and the weight of 680 tons can roll towards two sides in the sliding and walking process, damage can be caused to equipment and tools such as a gantry crane in the expanded excavation hole, and injury can be caused to construction operators on site.
The combined sliding and traveling track consists of a side rolling preventing support track, a slideway and a raceway, and is a combined sliding and traveling device designed for reducing the linear pressure of a front shield and a support shield on the unit length of a sliding rail and preventing a circular shield from rolling to two sides.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rolling and sliding type combined walking device and method for a TBM shield, which solve the difficult construction problem that the TBM shield is difficult to slide and walk in a tunnel with a narrow space. The method can be widely applied to construction of similar projects such as water conservancy tunnels.
In order to achieve the technical features, the invention is realized as follows: the TBM shield rolling sliding type combined traveling device comprises a bottom plate arranged at the bottom of a tunnel excavation section, wherein an anchor plate is fixedly arranged on the bottom plate through an anchor bolt, a roller path is fixedly arranged on the anchor plate through an inner rod piece, slide rails are symmetrically fixed on the anchor plate at two sides of the roller path, and anti-rolling supporting rails are symmetrically fixed on the anchor plate at two outer sides of the slide rails through outer rod pieces; a plurality of rolling rods are supported on the sliding rail in a rolling fit manner; and a front shield of the TBM shield body is supported at the tops of the roller path, the sliding rail and the anti-rolling supporting rail.
And anti-rolling supporting columns are symmetrically fixed on two sides of the bottom of the lower front shield block of the front shield, are respectively matched with the anti-rolling supporting rails on the corresponding sides, and support the whole front shield.
The roller shield is characterized in that an outer telescopic shield is sequentially arranged behind the front shield, an inner telescopic shield is arranged inside the outer telescopic shield, the tail of the inner telescopic shield is connected with a support shield, a lower support shield block of the support shield is supported on the sliding rail, and the bottom of the lower support shield block is not in contact with the roller.
The sliding rail is made of steel plate materials, H-shaped steel is supported at the bottom of the sliding rail and supported at the top of the steel plate, and an outer side reinforcing rib plate and an inner side reinforcing rib plate are arranged on two sides of the H-shaped steel respectively.
And high-grade concrete is poured into the upper cavity and the lower cavity inside the H-shaped steel.
The anti-rolling support rail is placed inside the channel steel and made of I-shaped steel materials, the two sides of the bottom of the anti-rolling support rail are limited by the stop blocks, and the bottom of the anti-rolling support rail is pressed inside the channel steel through the pressing plate.
And grease is coated on the sliding rail and the roller path.
The use method of any one of the TBM shield rolling and sliding type combined traveling device is characterized by comprising the following steps:
step 1: fixing a bottom plate at the bottom of the tunnel expanding excavation section through an anchor bolt;
step 2: the anti-rolling support rail is characterized in that an anchor plate is fixedly installed on a bottom plate through anchor bolts, a raceway is fixedly installed on the anchor plate through an inner rod piece, slide rails are symmetrically fixed on the anchor plate on two sides of the raceway, and anti-rolling support rails are symmetrically fixed on the anchor plate on two outer sides of the slide rails through outer rod pieces;
step 3: the anti-rolling support upright posts are symmetrically and fixedly welded on two sides of the bottom of the front shield;
step 4: mounting rolling rods are uniformly distributed on the rolling path, and butter is coated on the rolling path and the sliding rail;
step 5: supporting the anti-rolling support upright post on the anti-rolling support track;
step 6: supporting the bottoms of the outer telescopic shield, the inner telescopic shield and the support shield at the tops of the raceway and the slide rail;
step 7: the shield body is dragged by the traction mechanism to slide along the roller path, the sliding rail and the anti-rolling support rail.
The invention has the following beneficial effects:
in a narrow expanding excavation section city gate tunnel, holes are drilled at the bottom of the tunnel, anchor rods are buried underground to install anchor plates, and components such as a slide rail, a roller path, an anti-rolling support rail and the like are welded and fixed with the anchor plates through section steel rod pieces. When the cylindrical shield body which is huge in size, heavy in weight of 680 tons and 8.13m in diameter slides forwards, the front shield, the support shield and the combined track cannot be displaced, deformed and damaged due to the action of friction force; 4 groups of anti-rolling supporting upright posts (12) and walking wheel boxes which are symmetrically arranged on the lower block of the anterior shield can support part of the weight of the anterior shield and can ensure that the shield body does not roll and lose stability to two sides in the forward sliding and walking process. The round steel rolling rods are arranged on the steel plate roller path according to the calculated distance, so that the pressure of the front shield on the slideway can be reduced. The invention solves the construction problem that the shield body of the TBM is difficult to slide and walk in a tunnel with a narrow space. The method can be widely applied to construction of similar projects such as water conservancy tunnels.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural diagram of a shield and a combined track of a TBM.
FIG. 2 is a schematic view of the anterior shield and the combined track structure.
FIG. 3 is a schematic view of the support shield and the combined track structure.
Fig. 4 is a schematic view of a combined track structure.
Fig. 5 is a schematic view of an H-shaped slide rail structure.
Fig. 6 is a schematic view of the structure of the anti-rolling support track.
Fig. 7 is a schematic diagram of the structure of the roller track.
In the figure: the device comprises a roller path 1, a slide rail 2, an anti-rolling supporting rail 3, a gantry crane rail 4, a front shield 5, a supporting shield 6, an inner telescopic shield 7, an outer telescopic shield 8, an anchor bolt 9, a rolling rod 10, a bottom plate 11, an anti-rolling supporting upright post 12, a front shield lower block 13, a supporting shield lower block 14, section steel 15, an outer rod piece 16, an anchor plate 17, an inner rod piece 18, a steel plate 19, an outer reinforcing rib plate 20, H-shaped steel 21, high-grade concrete 22, an inner reinforcing rib plate 23, a stop block 24 and a pressing plate 25.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-7, the TBM shield rolling sliding type combined traveling device comprises a bottom plate 11 arranged at the bottom of a tunnel excavation section, anchor plates 17 are fixedly mounted on the bottom plate 11 through anchor bolts 9, raceways 1 are fixedly mounted on the anchor plates 17 through inner rods 18, slide rails 2 are symmetrically fixed on the anchor plates 17 at two sides of the raceways 1, and anti-rolling support rails 3 are symmetrically fixed on the anchor plates 17 at two outer sides of the slide rails 2 through outer rods 16; a plurality of rolling rods 10 are supported on the slide rail 2 in a rolling fit manner; the front shield 5 of the TBM shield body is supported on the top of the roller path 1, the sliding rail 2 and the anti-rolling support rail 3. Through adopting the running gear of above-mentioned structure, according to TBM shield body structural parameter and weight, expand and dig section hole bottom drilling in city gate opening type tunnel, bury anchor rod 9 underground and install anchor slab 17, with slide rail 2 and raceway 1, 3 components of anti-roll support track, through shaped steel pole outer member 16, interior pole piece 18 and anchor slab 17 welded fastening, TBM's anterior shield 5 erects on raceway 1, slide rail 2, track 3, prepares to drive inside and outside flexible shield 8, and inside flexible shield 7 supports the shield 6 and slides the walking forward along the combination track.
Further, anti-rolling support columns 12 are symmetrically fixed to two sides of the bottom of a front shield lower block 13 of the front shield 5, and the anti-rolling support columns 12 are respectively matched with the anti-rolling support rails 3 on the corresponding sides and support the whole front shield 5. And a front shield 5 weighing about 400 tons, and loads of the front shield are borne by the roller path 1, the sliding rail 2 and the rail 3 respectively and are transmitted to the ground.
Further, the front shield 5 is followed in proper order by outer flexible shield 8, is provided with interior flexible shield 7 in outer flexible shield 8 is inside, and the connection of the afterbody of interior flexible shield 7 has support shield 6, support shield 6's support shield lower block 14 supports on slide rail 2, and support shield lower block 14's bottom does not contact with roller 10. Because the bottom of the support shield lower block 14 is provided with a water drainage groove, the roller path 1 and the roller 10 are not in contact with the support shield lower block 14 and do not participate in load distribution of the support shield 6 weighing 280 tons, and the weight of the support shield 6 is only born by the slide rail 2.
Further, the slide rail 2 is made of a steel plate material, the bottom of the slide rail 2 is supported by H-shaped steel 21, the H-shaped steel 21 is supported on the top of the steel plate 19, and two sides of the H-shaped steel 21 are respectively provided with an outer reinforcing rib plate 20 and an inner reinforcing rib plate 23. The components in the slide rail 2 are spliced together by electric welding, and the structural stability of the slide rail is further ensured.
Further, the upper and lower cavities inside the H-beam 21 are filled with high-grade concrete 22. In order to increase the compressive strength of the slide rail 2 and the local strength of the H-shaped steel 21, high-grade concrete 22 is poured into the upper cavity and the lower cavity of the H-shaped steel 21.
Further, the anti-rolling support rail 3 is placed inside the channel steel 15, the anti-rolling support rail 3 is made of an I-shaped steel material, two sides of the bottom of the anti-rolling support rail 3 are limited by the stop blocks 24, and the bottom of the anti-rolling support rail 3 is pressed inside the channel steel 15 through the pressing plates 25. The anti-rolling support rail 3 is controlled not to shift in the channel steel 15, and the fixing effect is further ensured. Ensuring the stability of the device.
Furthermore, grease is coated on the sliding rail 2 and the roller path 1. The friction force of the shield body to the sliding rail 2 and the roller path 1 can be reduced.
Example 2:
the use method of any one of the TBM shield rolling and sliding type combined traveling device is characterized by comprising the following steps:
step 1: fixing a bottom plate 11 at the bottom of the tunnel expanding excavation section through an anchor bolt 9;
step 2: an anchor plate 17 is fixedly installed on the bottom plate 11 through an anchor bolt 9, the raceway 1 is fixedly installed on the anchor plate 17 through an inner rod piece 18, the slide rails 2 are symmetrically fixed on the anchor plate 17 at two sides of the raceway 1, and the anti-rolling support rails 3 are symmetrically fixed on the anchor plate 17 at two outer sides of the slide rails 2 through an outer rod piece 16;
step 3: the anti-rolling support upright posts 12 are symmetrically and fixedly welded on two sides of the bottom of the front shield 5;
step 4: the roller paths 1 are uniformly provided with roller rods 10, and the roller paths 1 and the sliding rails 2 are coated with butter;
step 5: supporting the anti-roll support post 12 on the anti-roll support track 3;
step 6: the bottoms of the outer telescopic shield 8, the inner telescopic shield 7 and the support shield 6 are supported at the tops of the raceway 1 and the slide rail 2;
step 7: the shield body is dragged by a traction mechanism to slide along the roller path 1, the sliding rail 2 and the anti-rolling supporting track 3.
Structural technical measures are taken on the supporting rails, so that the weight of 400 tons of the anterior shield is 24 percent borne by 4 groups of anti-rolling supporting rails, 96 tons are counted, and 24 tons are borne by each group of wheel boxes; 26% of the weight of the anterior shield allows 104 tons of raceway rolling rods to be borne; arranging round steel rolling rods on a steel plate roller path according to the calculated data and reducing the pressure of a front shield on a slideway; the weight of the front shield is 50 percent and is 200 tons, two H-shaped sliding rails are used for bearing, and the linear stress of a single sliding rail is reduced from 1118 (Kg/cm) to 382 (Kg/cm); the support shield adopts structural technical measures to change the linear contact of the support shield and the slide rail into surface contact, and the linear pressure per unit length of 467 (Kg/cm) into 39 (Kg/cm) per unit area2）。
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (6)
- TBM shield roll slippage formula combination running gear, its characterized in that: the tunnel expanding excavation device comprises a bottom plate (11) arranged at the bottom of a tunnel expanding excavation section, wherein an anchor plate (17) is fixedly arranged on the bottom plate (11) through an anchor bolt (9), a roller path (1) is fixedly arranged on the anchor plate (17) through an inner rod piece (18), slide rails (2) are symmetrically fixed on the anchor plate (17) at two sides of the roller path (1), and anti-rolling support rails (3) are symmetrically fixed on the anchor plate (17) at two outer sides of the slide rails (2) through an outer rod piece (16); a plurality of rolling rods (10) are supported on the roller path (1) in a rolling fit manner; a front shield (5) of the TBM shield body is supported at the tops of the roller path (1), the sliding rail (2) and the anti-rolling supporting track (3);anti-rolling supporting columns (12) are symmetrically fixed on two sides of the bottom of a front shield lower block (13) of the front shield (5), and the anti-rolling supporting columns (12) are respectively matched with the anti-rolling supporting rails (3) on the corresponding sides and support the whole front shield (5);the sliding rail (2) is made of a steel plate material, H-shaped steel (21) is supported at the bottom of the sliding rail (2), the H-shaped steel (21) is supported at the top of a steel plate (19), and an outer side reinforcing rib plate (20) and an inner side reinforcing rib plate (23) are respectively arranged on two sides of the H-shaped steel (21).
- 2. The TBM shield rolling and sliding type combined walking device according to claim 1, wherein: the roller shield is characterized in that an outer telescopic shield (8) is sequentially arranged behind the front shield (5), an inner telescopic shield (7) is arranged inside the outer telescopic shield (8), a support shield (6) is connected to the tail of the inner telescopic shield (7), a lower support shield block (14) of the support shield (6) is supported on the sliding rail (2), and the bottom of the lower support shield block (14) is not in contact with the roller bar (10).
- 3. The TBM shield rolling and sliding type combined walking device according to claim 1, wherein: the upper cavity and the lower cavity inside the H-shaped steel (21) are filled with high-grade concrete (22).
- 4. The TBM shield rolling and sliding type combined walking device according to claim 1, wherein: the anti-rolling support rail (3) is placed inside the channel steel (15), the anti-rolling support rail (3) is made of I-shaped steel materials, the two sides of the bottom of the anti-rolling support rail (3) are limited through the stop blocks (24), and the bottom of the anti-rolling support rail (3) is pressed inside the channel steel (15) through the pressing plates (25).
- 5. The TBM shield rolling and sliding type combined walking device according to claim 1, wherein: and grease is coated on the sliding rail (2) and the roller path (1).
- 6. The use method of the TBM shield rolling sliding type combined walking device is characterized by comprising the following steps of:step 1: a bottom plate (11) is fixed at the bottom of the tunnel expanding excavation section through an anchor bolt (9);step 2: an anchor plate (17) is fixedly installed on a bottom plate (11) through an anchor bolt (9), a raceway (1) is fixedly installed on the anchor plate (17) through an inner rod piece (18), slide rails (2) are symmetrically fixed on the anchor plate (17) on two sides of the raceway (1), and anti-rolling support rails (3) are symmetrically fixed on the anchor plate (17) on two outer sides of the slide rails (2) through an outer rod piece (16);step 3: the two sides of the bottom of the front shield (5) are symmetrically and fixedly welded with anti-rolling supporting upright posts (12);step 4: mounting rolling rods (10) are uniformly distributed on the roller path (1), and butter is coated on the roller path (1) and the sliding rail (2);step 5: supporting the anti-rolling support upright post (12) on the anti-rolling support track (3);step 6: the bottoms of the outer telescopic shield (8), the inner telescopic shield (7) and the support shield (6) are supported at the tops of the roller path (1) and the slide rail (2);step 7: the shield body is dragged by the traction mechanism to slide along the roller path (1), the sliding rail (2) and the anti-rolling supporting track (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811142017.5A CN109372525B (en) | 2018-09-28 | 2018-09-28 | TBM shield rolling and sliding type combined walking device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811142017.5A CN109372525B (en) | 2018-09-28 | 2018-09-28 | TBM shield rolling and sliding type combined walking device and method |
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| Publication Number | Publication Date |
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| CN109372525A CN109372525A (en) | 2019-02-22 |
| CN109372525B true CN109372525B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811142017.5A Active CN109372525B (en) | 2018-09-28 | 2018-09-28 | TBM shield rolling and sliding type combined walking device and method |
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| CN204703908U (en) * | 2015-05-20 | 2015-10-14 | 重庆睿安特盾构技术有限公司 | A kind of shield machine station-crossing device |
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| CN206429270U (en) * | 2017-02-10 | 2017-08-22 | 莫绍愚 | A kind of shield machine station-crossing device |
| CN206707713U (en) * | 2017-04-01 | 2017-12-05 | 中铁十一局集团城市轨道工程有限公司 | Subway shield tunnel construction technique on shield machine's station-crossing system |
| CN206753590U (en) * | 2017-05-24 | 2017-12-15 | 中隧隧盾国际建设工程有限公司 | It is adjustable to receive pedestal |
| CN207499874U (en) * | 2017-11-20 | 2018-06-15 | 中国建筑第八工程局有限公司 | Shield machine station-crossing device |
-
2018
- 2018-09-28 CN CN201811142017.5A patent/CN109372525B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202297064U (en) * | 2011-10-17 | 2012-07-04 | 广东华隧建设股份有限公司 | Device for integral translation of shield machine |
| CN104653229A (en) * | 2015-01-27 | 2015-05-27 | 粤水电轨道交通建设有限公司 | Shielding sliding shoe curvilinear pushing-up hole-passing construction method |
| CN204703908U (en) * | 2015-05-20 | 2015-10-14 | 重庆睿安特盾构技术有限公司 | A kind of shield machine station-crossing device |
| CN106640099A (en) * | 2017-01-10 | 2017-05-10 | 济南中铁重工轨道装备有限公司 | Hydraulic walking type direct-walking station-crossing mechanism of shield tunneling machine mainframe |
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| CN206707713U (en) * | 2017-04-01 | 2017-12-05 | 中铁十一局集团城市轨道工程有限公司 | Subway shield tunnel construction technique on shield machine's station-crossing system |
| CN206753590U (en) * | 2017-05-24 | 2017-12-15 | 中隧隧盾国际建设工程有限公司 | It is adjustable to receive pedestal |
| CN207499874U (en) * | 2017-11-20 | 2018-06-15 | 中国建筑第八工程局有限公司 | Shield machine station-crossing device |
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| CN109372525A (en) | 2019-02-22 |
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