CN103573270A - TBM (Tunnel Boring Machine) arc-shaped top shield and method for carrying out surrounding rock supporting by using top shield - Google Patents
TBM (Tunnel Boring Machine) arc-shaped top shield and method for carrying out surrounding rock supporting by using top shield Download PDFInfo
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- CN103573270A CN103573270A CN201310333531.8A CN201310333531A CN103573270A CN 103573270 A CN103573270 A CN 103573270A CN 201310333531 A CN201310333531 A CN 201310333531A CN 103573270 A CN103573270 A CN 103573270A
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Abstract
The invention discloses a TBM (Tunnel Boring Machine) arc-shaped top shield and a method for carrying out surrounding rock supporting by using the top shield. The TMB arc-shaped top shield comprises an arc-shaped shield, wherein a series of angle iron which is welded in parallel is arranged above the arc-shaped shield; a plurality of storable separation cabins which are separated mutually are formed between the angle iron and the arc-shaped shield. The method comprises the following steps: a steel bar row is inserted into the storable separation cabins and the steel bar row is gradually exposed out of the storable separation cabins when a TBM tunnels forwards; the exposed part of the steel bar row is supported and fixed by a steel arch frame and an anchor rod; the TBM tunnels continually; after the steel bar row is exposed out of the top shield, the next section of the steel bar row is inserted and is continually supported and fixed by using the steel arch frame and the anchor rod; the steps are repeated to form a combined supporting system for continuously supporting the tunneling. According to the top shield, a steel bar row storage interlayer is arranged above a previous TBM arc-shaped top shield to form a plurality of the storable separation cabins and the anchor rod and the arch frame are used for supporting to form the combined supporting system so as to prevent rocks of a fault fracture zone from falling off.
Description
Technical field
The present invention relates to a kind of TBM(tunnel machine) tunnel excavation construction technology, specifically a kind of improved TBM arched top shield and the method for carrying out reinforcing bar row supporting by this top shield when the tunnel excavation.
Background technology
An important technical problem that in the past restricted Open TBM Tunnel Construction Schedule and safety is exactly; while running into fault belt unfavorable geology hole section; once excavation section exposure TBM top, hole shield; can produce a large amount of slump rubbles; not only can bring safely threat to TBM device security and operating personnel; and at the bottom of the rock deposit hole of a large amount of slumps, greatly increased scarfing cinder amount at the bottom of hole, after usually making TBM shut down to wait for scarfing cinder, could tunnel.Like this, just reduce TBM excavation operation utilization rate, reduced TBM construction drilling depth, increased TBM construction period and cost.Main cause is that Open TBM construction supporting technical method existed defect in the past, when construction runs into zone of fracture, take steel arch frame, steel mesh reinforcement and bolt support, with TBM, tunnel forward, between TBM top shield and supporting, be interrupted and discontinuous, form firm exposure top shield kata-rocks pit hole section and can not support continuously in time and form slump.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of TBM arched top shield with storage silo;
The present invention has further proposed to adopt above-mentioned top arc shield to carry out the supporting method of tunnel excavation.
For solving the problems of the technologies described above, the technical scheme that top of the present invention shield is taked is: a kind of TBM arched top shield, it comprises arc shield, its key technology is: described arc shield be provided with above a series of seam side by side that length is consistent with arc shield angle steel together, between described angle steel and arc shield, form several and spaced apart from each otherly hold the storage compartment that reinforcing bar is arranged.
TBM tunnel excavation support method of the present invention completes by above-mentioned top shield, the steps include:
1) when construction runs into zone of fracture, reinforcing bar socket is entered in the storage compartment of top shield, along with TBM tunnels forward, reinforcing bar row exposes storage compartment gradually, and the part that now reinforcing bar row exposes adopts steel arch frame and anchor pole to support and is fixing;
2) continue driving, treat that reinforcing bar row exposes before the shield of top, insert next and save reinforcing bar row, and continue to adopt steel arch frame and anchor pole support and fix;
3) repeat above-mentioned steps, can form the combined support system of reinforcing bar row, anchor pole and steel arch frame, tunneling is realized to continuously uninterrupted supporting.
The beneficial effect that adopts technique scheme to produce is: this top shield arranges reinforcing bar row and stores interlayer above former TBM arched top shield, forms some storage compartments.When construction meets with zone of fracture, reinforcing bar socket is entered to store interlayer compartment, and support and form combined support system with anchor pole, bow member, with TBM, tunnel forward and the reach of top shield, the exclusive end of reinforcing bar is supported by steel arch frame and anchor pole, and disengage gradually from store compartment inner end, inserts next reinforcing bar row before stretching out completely again, like this, TBM top shield and reinforcing bar row just uninterruptedly support broken hole section continuously.Therefore, can prevent the slump of fault belt rock.
Accompanying drawing explanation
Fig. 1 is the structural representation of top of the present invention shield;
Fig. 2 is the view of the present invention while constructing;
Fig. 3 is the structural representation of reinforcing bar row in Fig. 2;
Wherein, 1, cutterhead; 2, steel arch frame; 3, reinforcing bar row; 4, top shield, 4-1, arc shield, 4-2, angle steel, 4-3, storage compartment.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Referring to accompanying drawing 1, the present invention includes arc shield 4-1, it is characterized in that: the outside of described arc shield 4-1 is provided with a plurality of seam angle steel 4-2 together, between described angle steel 4-2 and arc shield 4-1, form several storage compartment 4-3 that holds reinforcing bar row spaced apart from each other.
Referring to accompanying drawing 2 and accompanying drawing 3, job practices is as follows:
1) when construction runs into zone of fracture, reinforcing bar row 3 is inserted in the storage compartment 4-3 of top shield, along with TBM driving, reinforcing bar row 3 exposes storage compartment 4-3 gradually, and the part that now reinforcing bar row 3 exposes adopts steel arch frame and anchor pole to support and is fixing;
2) continue driving, treat that reinforcing bar row 3 exposes before the shield of top, insert next and save reinforcing bar row, and continue to adopt steel arch frame and anchor pole support and fix;
3) repeat above-mentioned steps, can form the combined support system of reinforcing bar row, anchor pole and steel arch frame, tunneling is realized to continuously uninterrupted supporting.
The present invention can be used for Open TBM construction and prevents rock falls by fault belt; Also can be used for low middling rock burst hole section construction supporting, prevent that rock burst from damaging equipment and personnel.
Claims (2)
1. a TBM arched top shield, it comprises arc shield (4-1), it is characterized in that: the outside of described arc shield (4-1) is provided with a series of seam side by side that length is consistent with arc shield (4-1) angle steel (4-2) together, between described angle steel (4-2) and arc shield (4-1), form several storage compartments (4-3) that holds reinforcing bar row spaced apart from each other.
2. a TBM tunnel surrounding supporting method, is characterized in that: it completes by the top shield described in claim 1, and this supporting method is:
1) when construction runs into zone of fracture, reinforcing bar row (3) is inserted in the storage compartment (4-3) of top shield, along with TBM development machine tunnels forward, reinforcing bar row (3) exposes storage compartment (4-3) gradually, and the part that now reinforcing bar row (3) exposes adopts steel arch frame and bolt support;
2) continue driving, treat that reinforcing bar row (3) exposes before the shield of top, insert next and save reinforcing bar row, and continue to adopt steel arch frame and anchor pole support and fix;
3) repeat above-mentioned steps, can form the combined support system of reinforcing bar row, anchor pole and steel arch frame, tunneling is realized to continuously uninterrupted supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310333531.8A CN103573270A (en) | 2013-08-02 | 2013-08-02 | TBM (Tunnel Boring Machine) arc-shaped top shield and method for carrying out surrounding rock supporting by using top shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310333531.8A CN103573270A (en) | 2013-08-02 | 2013-08-02 | TBM (Tunnel Boring Machine) arc-shaped top shield and method for carrying out surrounding rock supporting by using top shield |
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| CN103573270A true CN103573270A (en) | 2014-02-12 |
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| CN201310333531.8A Pending CN103573270A (en) | 2013-08-02 | 2013-08-02 | TBM (Tunnel Boring Machine) arc-shaped top shield and method for carrying out surrounding rock supporting by using top shield |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156123A (en) * | 2015-08-27 | 2015-12-16 | 山东万广建设工程有限公司 | Open shield tunneling machine and method for applying same |
| CN105464683A (en) * | 2015-12-22 | 2016-04-06 | 中国葛洲坝集团第三工程有限公司 | TBM shoring operation movable shield and application method thereof |
| CN105822314A (en) * | 2016-05-23 | 2016-08-03 | 中铁隧道集团有限公司 | TBM shield tail supporting device and method |
| CN107269287A (en) * | 2017-08-11 | 2017-10-20 | 中铁十八局集团有限公司 | A kind of open type TBM steel tile installs support system and method |
| CN108397208A (en) * | 2018-05-07 | 2018-08-14 | 中国铁建重工集团有限公司 | A kind of double-shielded TBM |
| CN108547620A (en) * | 2018-04-27 | 2018-09-18 | 铁建重工新疆有限公司 | A kind of reinforcing bar row installation system |
| CN108547636A (en) * | 2018-03-15 | 2018-09-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Double-shield TBM (Tunnel boring machine) shotcrete and anchor support structure and construction method thereof |
| CN108915712A (en) * | 2018-07-02 | 2018-11-30 | 石家庄铁道大学 | Open type TBM passes through strong rock burst hole section driving method |
| 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 |
| CN109681221A (en) * | 2019-02-21 | 2019-04-26 | 中水北方勘测设计研究有限责任公司 | The shield tail supporting construction of open type TBM |
| CN112065411A (en) * | 2020-08-26 | 2020-12-11 | 黄河勘测规划设计研究院有限公司 | Method for protecting rock burst by adopting rotary containment during open type TBM construction |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156123A (en) * | 2015-08-27 | 2015-12-16 | 山东万广建设工程有限公司 | Open shield tunneling machine and method for applying same |
| CN105464683A (en) * | 2015-12-22 | 2016-04-06 | 中国葛洲坝集团第三工程有限公司 | TBM shoring operation movable shield and application method thereof |
| CN105822314A (en) * | 2016-05-23 | 2016-08-03 | 中铁隧道集团有限公司 | TBM shield tail supporting device and method |
| CN107269287A (en) * | 2017-08-11 | 2017-10-20 | 中铁十八局集团有限公司 | A kind of open type TBM steel tile installs support system and method |
| CN108547636A (en) * | 2018-03-15 | 2018-09-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Double-shield TBM (Tunnel boring machine) shotcrete and anchor support structure and construction method thereof |
| CN108547620A (en) * | 2018-04-27 | 2018-09-18 | 铁建重工新疆有限公司 | A kind of reinforcing bar row installation system |
| CN108397208A (en) * | 2018-05-07 | 2018-08-14 | 中国铁建重工集团有限公司 | A kind of double-shielded TBM |
| CN108397208B (en) * | 2018-05-07 | 2024-05-07 | 中国铁建重工集团股份有限公司 | Double-shield TBM |
| CN108915712A (en) * | 2018-07-02 | 2018-11-30 | 石家庄铁道大学 | Open type TBM passes through strong rock burst hole section driving method |
| 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 |
| CN109372557B (en) * | 2018-11-21 | 2024-08-16 | 中铁工程装备集团有限公司 | Tunnel boring machine tunnel excavation arc plate and supporting method thereof |
| CN109681221A (en) * | 2019-02-21 | 2019-04-26 | 中水北方勘测设计研究有限责任公司 | The shield tail supporting construction of open type TBM |
| CN112065411A (en) * | 2020-08-26 | 2020-12-11 | 黄河勘测规划设计研究院有限公司 | Method for protecting rock burst by adopting rotary containment during open type TBM construction |
| CN112065411B (en) * | 2020-08-26 | 2022-03-18 | 黄河勘测规划设计研究院有限公司 | Method for protecting rock burst by adopting rotary containment during open type TBM construction |
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Application publication date: 20140212 |