CN109519183A - A kind of primary and secondary shield machine - Google Patents
A kind of primary and secondary shield machine Download PDFInfo
- Publication number
- CN109519183A CN109519183A CN201910030953.5A CN201910030953A CN109519183A CN 109519183 A CN109519183 A CN 109519183A CN 201910030953 A CN201910030953 A CN 201910030953A CN 109519183 A CN109519183 A CN 109519183A
- Authority
- CN
- China
- Prior art keywords
- handset
- shield
- machine tool
- machine
- shield body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 26
- 235000009566 rice Nutrition 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 241000209094 Oryza Species 0.000 claims description 25
- 239000002689 soil Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 235000013312 flour Nutrition 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000005641 tunneling Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004992 fission Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
- E21D9/03—Driving non-circular tunnels
-
- 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- 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
-
- 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
- E21D9/124—Helical conveying means therefor
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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention proposes a kind of primary and secondary shield machine, including handset shield body, and the handset shield body is located in machine tool shield body, and handset shield body is detachably connected with machine tool shield body, and dregs transportation system is equipped in handset shield body, is equipped with dismountable reaction frame in machine tool shield body.The present invention solves the problems, such as subway tunnel base station tunnel excavation, the advantage of primary and secondary shield is combined by double-O-tube shield design, innovative proposes a kind of double dumpling made of glutinous rice flour mother shield machines, the primary excavation formation problems being able to ascend in on-circular cross-section tunnel shield tunneling process save spatial surface, shorten the construction period, improve drivage efficiency and economy.
Description
Technical field
The present invention relates to constructing tunnel equipment, particularly relate to a kind of primary and secondary shield machine.
Background technique
Shield tunnel construction is widely used in urban subway tunnel, underground vcehicular tunnel and various underground engineering constructions, with
The increase of demand, shield machine design develops towards polynary shield direction.Subway is built a station to be made with the docking base station construction of various tunnels
For the important component of underground integral construction, part construction at present is independently carried out with tunnel piercing, due to underground mistake
Tunnel space of standing is on-circular cross-section, needs conventional shield repeatedly to tunnel to be formed, efficiency is lower, costly.Accordingly, it is considered to underground base
It stands and one-pass molding and continuously originates double dumpling made of glutinous rice flour mother Suporting structures of driving after can be realized molding.
Currently, the special-shaped shield technique due to noncircular cross section is not mature enough, how double dumpling made of glutinous rice flour mother shield machine structures meet
Sub- shield smoothly originates after dismounting in hole, is the biggest problem, how each system of double dumpling made of glutinous rice flour mother shields has primary and secondary shield
Mode conversion requirements, it is same urgently to be resolved.
Summary of the invention
The present invention proposes a kind of primary and secondary shield machine, solves existing shield machine and once digs in reply on-circular cross-section tunnel excavation
Into molding, and the problem of realize the case where mother and sons' shield independently tunnels change working, shield construction ground space can be saved,
Realize the primary driving molding of base station construction, double circular line spacing is adjustable, while can fast implement mother and sons' fission driving origination function.
The technical scheme of the present invention is realized as follows: a kind of primary and secondary shield machine, including handset shield body, the handset shield
Body is located in machine tool shield body, and handset shield body is detachably connected with machine tool shield body, and dregs transportation system, machine tool are equipped in handset shield body
Dismountable reaction frame is equipped in shield body.
The handset shield body segmentation, adjacent two sections are detachably connected.
Dismountable handset rice word beam and handset propulsion system are equipped in the handset shield body, handset rice word beam is equipped with
Dismountable handset assembling machine, machine tool shield body is interior to be equipped with dismountable machine tool rice word beam, and machine tool rice word beam is equipped with dismountable
Machine tool assembling machine.
The machine tool assembling machine and handset assembling machine is same assembling machine.
The machine tool shield body and handset shield body is double circle arrangements.
The machine tool shield body is equipped with machine tool cutterhead and machine tool drives, machine tool driving driving machine tool cutterhead, handset shield body
It is equipped with handset cutterhead and handset drives, handset driving driving handset cutterhead.
The machine tool cutterhead and handset cutterhead is equipped with soft soil layer cutter or compound stratum cutter.
Machine tool cutterhead in machine tool shield body is swing type.
The machine tool cutterhead and handset cutterhead of side and the machine tool cutterhead of the other side and handset cutterhead interlaced arrangement.
The dregs transportation system is screw conveyor or belt feeder.
Compared with prior art, the beneficial effects of the present invention are:
1, it is suitable for base station tunnel excavation, can be realized one-pass molding, saves cost, improve efficiency;
2, it is suitable for the non-circular tunnel excavations such as market place builet below the ground, the preferred equipment of underground space integrated construction will be become;
3, primary and secondary shield has independent construction ability, has more good control ground settlement ability, and geology adaptability etc. is more
Aspect advantage;
4, facilitated by primary and secondary shield Collaborative Control and realize that variable diameters sections of tunnel excavates.
The present invention solves the problems, such as subway tunnel base station tunnel excavation, combines the excellent of primary and secondary shield by double-O-tube shield design
Gesture, innovative proposes a kind of double dumpling made of glutinous rice flour mother shield machines, is able to ascend once opening in on-circular cross-section tunnel shield tunneling process
Formation problems are dug, spatial surface is saved, shortens the construction period, improves drivage efficiency and economy.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is structure of the invention figure.
Fig. 2 is the cutterhead front elevation that the present invention is suitable for soft soil layer.
Fig. 3 is the cutterhead front elevation that the present invention is suitable for compound stratum.
Fig. 4 is that machine tool of the present invention tears structure chart after machine open.
Fig. 5 is handset assembling assumption diagram of the present invention.
Fig. 6 is that handset of the present invention originates driving figure.
In figure: 1- machine tool cutterhead;2- handset cutterhead;The driving of 3- machine tool;The driving of 4- handset;5- machine tool shield body;6- handset shield
Body;7- machine tool assembling machine;8- machine tool rice word beam;9- handset rice word beam;10- handset assembling machine;11- reaction frame;12- helical feed
Machine;13- soft soil layer cutter;14- compound stratum cutter;The section of jurisdiction 15-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
As shown in Fig. 1,4 to 6, the present invention proposes that a kind of build a station suitable for subway once excavates molding son with on-circular cross-section
Female shield machine arranges shield body structure, including the conveying of cutter disc system, drive system, shield body system, propulsion system, dregs for double circles
System, pipe sheet assembling system and counter-force support system, cutter disc system include machine tool cutterhead 1 and handset cutterhead 2, and drive system includes
The machine tool driving 3 of machine tool cutterhead 1 and the handset driving 4 of driving handset cutterhead 2 are driven, shield body system includes machine tool shield body 5 and son
Machine shield body 6, propulsion system include machine tool propulsion system and handset propulsion system, and propulsion system is preferably propelling cylinder, and dregs is defeated
Sending system includes screw conveyor 12 or belt feeder, and pipe sheet assembling system includes machine tool assembling machine 7 and handset assembling machine 10, counter-force
Support system includes dismountable reaction frame 11.
Shield body system includes machine tool shield body 5 and handset shield body 6, and handset shield body 6 is located in machine tool shield body 5, and handset shield body 6 is logical
It crosses bolt to be detachably connected with machine tool shield body 5, specifically, machine tool shield body 5 includes machine tool rice word beam 8, machine tool rice word beam 8 is detachable
Be located in machine tool shield body 5, handset shield body 6 includes handset anterior shield, shield, handset rice word beam 9 and handset tail shield in handset, segmentation
Shield and handset tail shield head and the tail are removably attachable to together in handset anterior shield, handset, and handset rice word beam 9 is removably located at handset
On middle shield.
Propulsion system includes machine tool propulsion system and handset propulsion system, and machine tool propulsion system is located in machine tool shield body 5, is used
Propulsion when primary and secondary shield is tunneled jointly, handset propulsion system are detachably arranged in handset shield 6, are used for handset shield
Individually propulsion when driving.When driving, the driving speed and driving attitude of drive system and propulsion system Collaborative Control shield machine.
Dregs transportation system is screw conveyor 12 or belt feeder, is located in handset shield body 6, and effect will excavate lower
Dregs is efficiently discharged in time in storehouse.
Assembling machine system includes machine tool assembling machine 7 and handset assembling machine 10, and machine tool assembling machine 7 is detachably located at machine tool rice word
On beam 8, handset assembling machine 10 is detachably located on handset rice word beam 9.Machine tool assembling machine 7 and handset assembling machine 10 are each adaptive
The assembling machine of its meter of word beam, or for the assembling machine of this two kinds of rice word beams can be applicable in, meanwhile, assembling machine can satisfy primary and secondary shield
A variety of section of jurisdiction specifications assembly.
Counter-force support system includes reaction frame 11, and reaction frame 11 is removably located in machine tool shield body 5, for originating for handset
Support is provided.
As shown in Figure 1,2 and 3, cutter disc system includes that two machine tool cutterheads 1 and two sub- machine knife disks 2, machine tool cutterhead 1 are located at
The front of machine tool shield body 5, handset cutterhead 2 is located at the front of handset shield body 6, and by respective drive system, primary and secondary cutterhead can
Realize independent driving.
As shown in Fig. 2, for cutterhead front elevation suitable for soft soil layer, mainly includes spoke beam type primary and secondary cutterhead and be suitable for
The soft soil layer cutter 13 of soft soil layer, such as scraper, cutter, cutterhead are located in same driving plane, the machine tool cutterhead 2 of two sides
For swing type, interference when driving is avoided.
As shown in figure 3, for cutterhead front elevation suitable for compound stratum, mainly includes panel composite lights cutterhead and be suitable for
The compound stratum cutter 14 of compound stratum, such as hobboing cutter, scraper, the cutterhead of two sides one in front and one in back, interlaced arrangement, avoid driving when
Interference.
As shown in Figure 1, for the structure installation diagram that primary and secondary shield is tunneled jointly, handset anterior shield and machine tool shield body are connected to one
It rises, has removed shield in handset, handset backing, handset propulsion system, handset rice word beam 9, handset assembling machine 10 and reaction frame 11, pacify
It is tunneled jointly equipped with machine tool rice word beam 8, machine tool assembling machine 7, machine tool propulsion system and screw conveyor 12, primary and secondary cutterhead, dregs
It is transported to shield body rear by helical feed to 12, machine tool assembling machine 7 carries out assembly to section of jurisdiction 15, and machine tool propulsion system is with section of jurisdiction
15 be support, and primary and secondary shield body is promoted to tunnel forward jointly, keeps common driving state to arrival, prepares handset and originate.
As shown in figure 4, providing preparation to tear machine state open in machine tool hole for subsequent child shield launching, including remove machine tool and spell
Installation 7 and machine tool rice word beam 8.
As shown in figure 5, being shield, handset backing, handset propulsion system, son in handset assembling assumption diagram, including installation handset
Machine-processed rice word beam 9, handset assembling machine 10 and reaction frame 11, debugging handset shield independently originate performance parameter, reach sub- shield and begin
Clockwork spring part.
As shown in fig. 6, originate driving figure for handset, sub- shield after female shield inside configuration has and independently originates condition,
The connection bolt between all primary and secondary shield bodies is removed, is support with reaction frame, forward movement realizes mother and sons' shield fission, son
The independent driving of shield.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of primary and secondary shield machine, including handset shield body (6), it is characterised in that: the handset shield body (6) is located at machine tool shield body
(5) in, handset shield body (6) is detachably connected with machine tool shield body (5), and dregs transportation system, machine tool shield are equipped in handset shield body (6)
Dismountable reaction frame (11) are equipped in body (5).
2. primary and secondary shield machine according to claim 1, it is characterised in that: handset shield body (6) segmentation, adjacent two sections
It is detachably connected.
3. primary and secondary shield machine according to claim 2, it is characterised in that: be equipped in the handset shield body (6) detachable
Handset rice word beam (9) and handset propulsion system, handset rice word beam (9) be equipped with dismountable handset assembling machine (10), machine tool
Dismountable machine tool rice word beam (8) is equipped in shield body (5), machine tool rice word beam (8) is equipped with dismountable machine tool assembling machine (7).
4. primary and secondary shield machine according to claim 3, it is characterised in that: the machine tool assembling machine (7) and handset are assembled
Machine (10) is same assembling machine.
5. primary and secondary shield machine according to claim 1, it is characterised in that: the machine tool shield body (5) and handset shield body (6)
For double circle arrangements.
6. primary and secondary shield machine according to claim 5, it is characterised in that: the machine tool shield body (5) is equipped with machine tool knife
Disk (1) and machine tool driving (3), machine tool drive (3) driving machine tool cutterhead (1), handset shield body (6) be equipped with handset cutterhead (2) and
Handset drives (4), and handset drives (4) driving handset cutterhead (2).
7. primary and secondary shield machine according to claim 6, it is characterised in that: the machine tool cutterhead (1) and handset cutterhead (2)
It is equipped with soft soil layer cutter (13) or compound stratum cutter (14).
8. primary and secondary shield machine according to claim 5 or 6, it is characterised in that: the machine tool cutterhead (1) in machine tool shield body (5)
For swing type.
9. primary and secondary shield machine according to claim 5 or 6, it is characterised in that: the machine tool cutterhead (1) and handset cutterhead of side
(2) with the machine tool cutterhead (1) of the other side and handset cutterhead (2) interlaced arrangement.
10. primary and secondary shield machine according to claim 1, it is characterised in that: the dregs transportation system is helical feed
Machine (12) or belt feeder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910030953.5A CN109519183B (en) | 2019-01-14 | 2019-01-14 | Primary and secondary shield constructs machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910030953.5A CN109519183B (en) | 2019-01-14 | 2019-01-14 | Primary and secondary shield constructs machine |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109519183A true CN109519183A (en) | 2019-03-26 |
CN109519183B CN109519183B (en) | 2024-07-02 |
Family
ID=65799402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910030953.5A Active CN109519183B (en) | 2019-01-14 | 2019-01-14 | Primary and secondary shield constructs machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109519183B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110792448A (en) * | 2019-11-23 | 2020-02-14 | 黎兴文 | Tunneling mechanism of shield tunneling machine |
CN111335897A (en) * | 2019-11-05 | 2020-06-26 | 中国铁建重工集团股份有限公司 | Shaft heading machine |
CN114856593A (en) * | 2022-04-12 | 2022-08-05 | 中铁工程装备集团有限公司 | Combined type heading machine |
CN115263333A (en) * | 2021-04-30 | 2022-11-01 | 中铁工程装备集团有限公司 | Method for disassembling double-layer shell shield machine in tunnel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003155889A (en) * | 2001-11-20 | 2003-05-30 | Hazama Gumi Ltd | Master and slave shield machine and its boring method |
JP2010222838A (en) * | 2009-03-24 | 2010-10-07 | Toda Constr Co Ltd | Master/slave shield machine and construction method for tunnel |
JP2015083750A (en) * | 2013-10-25 | 2015-04-30 | 鹿島建設株式会社 | Reaction receiving apparatus for shield machine, and shield tunnel construction method |
CN209483352U (en) * | 2019-01-14 | 2019-10-11 | 中铁工程装备集团有限公司 | Primary and secondary shield machine |
-
2019
- 2019-01-14 CN CN201910030953.5A patent/CN109519183B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003155889A (en) * | 2001-11-20 | 2003-05-30 | Hazama Gumi Ltd | Master and slave shield machine and its boring method |
JP2010222838A (en) * | 2009-03-24 | 2010-10-07 | Toda Constr Co Ltd | Master/slave shield machine and construction method for tunnel |
JP2015083750A (en) * | 2013-10-25 | 2015-04-30 | 鹿島建設株式会社 | Reaction receiving apparatus for shield machine, and shield tunnel construction method |
CN209483352U (en) * | 2019-01-14 | 2019-10-11 | 中铁工程装备集团有限公司 | Primary and secondary shield machine |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111335897A (en) * | 2019-11-05 | 2020-06-26 | 中国铁建重工集团股份有限公司 | Shaft heading machine |
CN111335897B (en) * | 2019-11-05 | 2021-07-30 | 中国铁建重工集团股份有限公司 | Shaft heading machine |
CN110792448A (en) * | 2019-11-23 | 2020-02-14 | 黎兴文 | Tunneling mechanism of shield tunneling machine |
CN115263333A (en) * | 2021-04-30 | 2022-11-01 | 中铁工程装备集团有限公司 | Method for disassembling double-layer shell shield machine in tunnel |
CN114856593A (en) * | 2022-04-12 | 2022-08-05 | 中铁工程装备集团有限公司 | Combined type heading machine |
Also Published As
Publication number | Publication date |
---|---|
CN109519183B (en) | 2024-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109519183A (en) | A kind of primary and secondary shield machine | |
CN109826636B (en) | Shield machine suitable for high ground stress soft rock stratum | |
CN111997645B (en) | Multi-cutter-head tunneling machine | |
CN109026041B (en) | Control method of shield propulsion system for resisting unbalance loading | |
US20190264563A1 (en) | Tunnel boring machine | |
CN112112658B (en) | TBM and TBM construction method of combined tunnel | |
CN109630148A (en) | A kind of dual thrust multi-cutter-disk rock tunnel(ling) machine and its driving method | |
CN207229109U (en) | A kind of large-diameter shield cutter disc system for hard-soft heterogeneous ground | |
CN211648175U (en) | Hydraulic cutting tool module and hydraulic-mechanical combined rock breaking TBM device | |
CN109139028B (en) | Arc-cutting shield tunneling machine cutterhead | |
CN102536255B (en) | Multilevel stepped hole-expansion cutter head for shield machine | |
CN109854256A (en) | A kind of primary and secondary shield machine construction method | |
CN218062316U (en) | Cutter head of small-diameter shield tunneling machine | |
CN105937398A (en) | Same-plane multi-cutter-disc rectangular tunneling machine used in water-rich pebble stratum | |
CN210977489U (en) | Small-diameter small knife interval shield cutter head | |
CN209483352U (en) | Primary and secondary shield machine | |
CN212359762U (en) | High-speed intelligent shield constructs machine | |
CN209324360U (en) | A kind of dual thrust multi-cutter-disk rock tunnel(ling) machine | |
CN112761646A (en) | Non-circular tunnel boring machine, breaker for entry driving machine | |
CN112065419B (en) | TBM cutter head and inclined shaft construction method | |
CN216198105U (en) | Three-mould heading machine with novel TBM (tunnel boring machine) heading mode | |
CN114352304B (en) | Spherical cutter head | |
CN110985027B (en) | Multi-mode shield constructs quick-witted blade disc and shield constructs machine thereof | |
CN106761791B (en) | Tunnel boring machine and construction method thereof | |
CN205714206U (en) | A kind of isoplanar multi-cutter-disk rectangular tunnel boring machine for rich water cobblestone stratum |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant |