CN106285691A - The method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method - Google Patents
The method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method Download PDFInfo
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- CN106285691A CN106285691A CN201610646165.5A CN201610646165A CN106285691A CN 106285691 A CN106285691 A CN 106285691A CN 201610646165 A CN201610646165 A CN 201610646165A CN 106285691 A CN106285691 A CN 106285691A
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- tunnel
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000011161 development Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005641 tunneling Effects 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 claims abstract description 18
- 239000004746 geotextile Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 239000011378 shotcrete Substances 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000009172 bursting Effects 0.000 abstract description 3
- 230000008520 organization Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provides the method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method, carries out in the following manner: step one, tunnel excavation；Step 2, muck removal；Step 3, preliminary bracing；Step 4, change step operation: use walking supporting construction to control the overall movement of equipment and tuning；Step 5, inverted arch and secondary lining: use corollary equipment to carry out inverted arch, geotextiles, splash guard laying, reinforcing bar binding and two lining constructions.Instant invention overcomes tradition drill bursting construction operation many, complicated organization, the duration is longer, and out break amount is big, the shortcoming of poor stability, achieve shield formula multi-arm development machine to combine with New Austrian Tunneling Method, there is fast, efficient, safe reliable, the advantage such as construction quality is good.
Description
Technical field
The present invention relates to constructing tunnel field, be specifically related to the tunnel that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method
Pipeline construction method.
Background technology
Due to special quality, construction period, tradition construction of explosion method is difficult in adapt to engineering construction needs, and tunnel digging
Enter machine construction method have fast, efficient, safe reliable, construction quality is good, low cost and other advantages, becomes long tunnel first
The key technology and equipment of choosing.Compared with traditional tunnel piercing technology, shield formula multi-arm development machine can realize tunneling continuously, can be same
Time complete brokenly the operations such as rock muck removal and supporting, there is higher drivage efficiency, the 3 of the generally conventional drilling and blasting method of its driving speed ~
10 times；Additionally, tunneler construction also has cavitation quality high, economical, safe and environment-friendly and saves the advantages such as labour force.
Shield formula tunneler can be prevented effectively from tunnel vault and cave in, prominent mud retention of excessive fluid, just props up the thing such as unstability, malformation
Therefore generation, work progress is safe and reliable, and development machine excavation surface is substantially smooth simultaneously, it is to avoid stress raisers, reduces
The disturbance of tunnel perimeter surrouding rock stress, saves its globality from damage.Shield formula tunneler achieve driving, muck removal, preliminary bracing,
Cavitation work progress such as inverted arch pours, secondary lining.
New Austrian Tunneling Method is that application rock mass mechanics is theoretical, with safeguard and utilize the self-bearing ability of country rock as basic point, use anchor pole and
Gunite concrete is main supporting means, carries out supporting timely, controls the deformation of country rock and relaxes, making country rock become prop
The ingredient of system, and by instructing constructing tunnel and underground engineering design to construct the measurement of country rock and supporting, monitoring
Method and principle.
If shield formula tunneler can be combined with the method for tunnel construction of New Austrian Tunneling Method, big tunnel will be had
There is important meaning.
Summary of the invention
The present invention provides the method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method, overcomes tradition
Drill bursting construction operation is many, complicated organization, and the duration is longer, and out break amount is big, the shortcoming of poor stability.
The technical scheme is that and be achieved in that: tunnel that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method
Construction method, is carried out in the following manner:
Step one, tunnel excavation: configure three development machines, wherein two, bottom, excavate bottom charge tunnel, hold together quarrel, top one
Portion, charge tunnel top is excavated；Three development machines cooperate, it is achieved full face tunneling or two bench excavations；
Step 2, muck removal: scraper chain, ballast collecting bucket, dial quarrel device, pull out quarrel mechanical hand, swelling device, drive system constitution equipment muck removal
System, uses scraper chain and ballast collecting bucket collection quarrel, by pulling over to scraping on slag plate of the soil that is cut in collection quarrel device, pulls out quarrel mechanical hand for assisting
Receive quarrel, collection quarrel, use continuous conveyor system or mine car to be transported to outside hole afterwards；
Step 3, preliminary bracing: shield formula multi-arm development machine arranges shield and median septum, and wherein shield includes pushing up shield, side is protected
Shield, face is divided into two by median septum, plays the effect of stable face, and median septum is additionally operable to collect the first half simultaneously
It is cut, is cut clearly；Use the steel arch-shelf erector after being arranged on shield to carry out the supporting of vertical arch, store in steel arch and store a fixed number on platform
The steel arch-shelf of amount, makes driving, the synchronization of vertical arch carry out, and steel arch-shelf is lifted by steel arch tightening mechanism, stretching to setting position, by steel arch
Bolt is tight, installs lock foot anchoring stock, completes steel arch and installs；Bar-mat reinforcement uses artificial linked network；Muscle row install, and reinforcing bar is arranged one end and inserted top
Portion's shield, the other end is connected in steel arch；Employing can rotate and the shotcrete robot that moves axially by hoop, is directly sprayed by concrete
It is mapped to shield rear portion, it is achieved immediate support；
Step 4, change step operation: use walking supporting construction to control the overall movement of equipment and tuning；
Step 5, inverted arch and secondary lining: use corollary equipment to carry out inverted arch, geotextiles, splash guard laying, reinforcing bar binding and two
Lining construction.
The present invention is carried out according to following order: uses development machine to realize tunnel excavation → collection quarrel device and coordinates belt feeder to go out
Quarrel → use steel arch-shelf fitting machine and shotcrete robot immediate support → inverted arch pouring construction → geotextiles, splash guard to lay → bis-
Secondary lining cutting.
Instant invention overcomes tradition drill bursting construction operation many, complicated organization, the duration is longer, and out break amount is big, peace
The shortcoming of full property difference, it is achieved that shield formula multi-arm development machine combines with New Austrian Tunneling Method, has fast, efficient, safe reliable, construction
The advantages such as quality is good.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is shield formula multi-arm tunneler profilograph of the present invention
Fig. 2 is shield formula multi-arm tunneler cross-sectional view of the present invention
In figure: 1. development machine, 2. top shield, 3. side shield, 4. collection quarrel device, 5. continuous conveyor system, 6. mine car, 7. steel
Bow member erector, 8. steel arch stores platform, 9. shotcrete robot, and 10. walking supports.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not paying creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method, is to carry out in the following manner
:
Step one, tunnel excavation: configure three development machines 1, wherein two, bottom, excavate bottom charge tunnel, hold together quarrel, top one
Portion, charge tunnel top is excavated；Three development machines 1 cooperate, it is achieved full face tunneling or two bench excavations；
Step 2, muck removal: scraper chain, ballast collecting bucket, dial quarrel device, pull out quarrel mechanical hand, swelling device, drive system constitution equipment muck removal
System, uses scraper chain and ballast collecting bucket collection quarrel, quickly pulls over quarrel soil in collection quarrel device 4 to scraping on slag plate, pulls out quarrel mechanical hand and use
Receive quarrel, collection quarrel in auxiliary, use continuous conveyor system 5 or mine car 6 to be transported to outside hole afterwards；
Step 3, preliminary bracing: shield formula multi-arm development machine arranges shield and median septum, and wherein shield includes pushing up shield 2, side is protected
Shield 3, face is divided into two by median septum, plays the effect of stable face, and median septum is additionally operable to carry out the first half simultaneously
Collection is cut, is cut clearly；Use the steel arch-shelf erector 7 after being arranged on shield to carry out the supporting of vertical arch, store in steel arch and on platform 8, store one
The steel arch-shelf of determined number, makes driving, the synchronization of vertical arch carry out, and steel arch-shelf is lifted by steel arch tightening mechanism, stretching to setting position, will
Steel arch bolt is tight, installs lock foot anchoring stock, completes steel arch and installs；Bar-mat reinforcement uses artificial linked network；Muscle row install, and reinforcing bar is arranged one end and inserted
Entering top shield, the other end is connected in steel arch；Employing can rotate and the shotcrete robot 9 that moves axially by hoop, directly will mix
Solidifying soil is ejected into shield rear portion, it is achieved immediate support；
Step 4, change step operation: use walking supporting construction to control the overall movement of equipment and tuning；
Step 5, inverted arch and secondary lining: use corollary equipment to carry out inverted arch, geotextiles, splash guard laying, reinforcing bar binding and two
Lining construction.
The present invention is carried out according to following order: uses development machine to realize tunnel excavation → collection quarrel device and coordinates belt feeder to go out
Quarrel → use steel arch-shelf fitting machine and shotcrete robot immediate support → inverted arch pouring construction → geotextiles, splash guard paving
If → secondary lining.The present invention uses three development machines to cooperate, it is achieved full face tunneling or two bench excavations；Collection quarrel device
In conjunction with belt feeder muck removal, it is achieved excavation, muck removal synchronize；Use steel arch-shelf fitting machine, shotcrete robot carry out in time steel arch-shelf and
Concrete preliminary bracing, constructs in conjunction with inverted arch fast pouring, utilizes corollary equipment to closely follow laying geotextiles, splash guard, colligation steel
Muscle, cast two lining lining cutting；Use walking supporting construction to control heading equipment to move, it is achieved Fully-mechanized constructing tunnel, improve
Efficiency of construction and safety.
As illustrated in fig. 1 and 2, the operating procedure in the specific embodiment of the invention is as follows:
1, tunnel excavation muck removal
Shield formula multi-arm development machine three development machines 1 of configuration, two, bottom, cover tunnel bottom excavation, hold together quarrel, one, top,
Covering tunnel top excavates；Three development machines 1 cooperate, it is achieved full face tunneling or two bench excavations.Arrange top shield 2,
Side shield 3 is to protect development machine, staff.Scraper chain and collection quarrel device 4 is utilized to carry out collection quarrel, by quarrel soil in collection quarrel device 4 quickly
Pull over to scraping on slag plate, pull out quarrel mechanical hand for assisting receipts quarrel, collection quarrel, use continuous conveyor system 5 or mine car 6 to be transported to afterwards
Outside hole.
2, preliminary bracing
Steel arch-shelf erector 7 after the shield 2 of use top carries out the supporting of vertical arch, stores 8 storages on platform in steel arch a number of
Steel arch-shelf, can reduce steel arch transport number of times, makes driving, the synchronization of vertical arch carry out, and steel arch tightening mechanism is by steel arch-shelf lifting, stretching extremely
Setting position, workman, by tight for steel arch bolt, installs lock foot anchoring stock, completes steel arch and installs；Use manually installed bar-mat reinforcement, steel is installed
Insertion top, one end shield during muscle row, the other end is connected in steel arch；Use the shotcrete robot that hoop rotates and moves axially
9, by concrete ejection to shield rear portion, it is achieved immediate support.
3, step operation is changed
Walking is utilized to support the overall movement of 10 control development machines and tuning.
4, inverted arch and secondary lining
Utilize inverted arch formwork for placing and inverted arch trestle, it is achieved inverted arch synchronous construction.Corollary equipment is used to carry out geotextiles, splash guard
Lay, reinforcing bar binding and two serves as a contrast construction.
The key points for operation of the present invention are as follows:
1, use three development machines, scraper chain and belt feeder to cooperate, it is achieved full section of tunnel or two bench excavations, hold together quarrel and
Muck removal synchronizes.
2, carry out supporting after digging excavation in time, close country rock, make the disturbing influence of country rock control in minimum zone, and
Reinforce country rock, improve Surrounding Rock Strength, the self-bearing capacity of protection tunnel surrounding.
3, allow country rock by a certain amount of deformation, be beneficial to play the inherent strength of country rock, the supporting construction in tunnel simultaneously,
Also should have predetermined contracted amount, to relax tunnel pressure.
4, construction carries out preliminary bracing in time so that it is with country rock tight bond, shared pressure from surrounding rock.
The present invention compared with prior art has the following advantages
1, the construction under the conditions of being difficult to spending hole and construction period relatively tight, work under bad environment etc. of the profound tunnel can be solved difficult
Topic.
2, speed of application is fast, and environmental effect is little, and operation benefits is obvious.
3, mechanization degree is high, and construction risk is little.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (2)
1. the method for tunnel construction that a shield formula multi-arm development machine combines with New Austrian Tunneling Method, it is characterised in that be according to following side
Formula is carried out:
Step one, tunnel excavation: configure three development machines (1), wherein two, bottom, excavate bottom charge tunnel, hold together quarrel, top
One, charge tunnel top is excavated；Three development machines (1) cooperate, it is achieved full face tunneling or two bench excavations；
Step 2, muck removal: scraper chain, ballast collecting bucket, dial quarrel device, pull out quarrel mechanical hand, swelling device, drive system constitution equipment muck removal
System, uses scraper chain and ballast collecting bucket collection quarrel, will the pulling over to scraping on slag plate of quarrel soil in collection quarrel device (4), pull out quarrel mechanical hand for
Auxiliary receives quarrel, collection quarrel, uses continuous conveyor system (5) or mine car (6) to be transported to outside hole afterwards；
Step 3, preliminary bracing: shield formula multi-arm development machine arranges shield and median septum, and wherein shield includes pushing up shield (2), side
Shield (3), face is divided into two by median septum, plays the effect of stable face, and median septum is additionally operable to the first half simultaneously
Carry out collection quarrel, be cut clearly；Use the steel arch-shelf erector (7) after being arranged on shield to carry out the supporting of vertical arch, store platform (8) in steel arch
The a number of steel arch-shelf of upper storage, makes driving, the synchronization of vertical arch carry out, and steel arch-shelf is lifted by steel arch tightening mechanism, stretching is to setting
Location is put, and by tight for steel arch bolt, installs lock foot anchoring stock, completes steel arch and installs；Bar-mat reinforcement uses artificial linked network；Muscle row install, steel
Muscle arranges insertion top, one end shield, and the other end is connected in steel arch；Employing can rotate and the shotcrete robot that moves axially by hoop
(9), directly by concrete ejection to shield rear portion, it is achieved immediate support；
Step 4, change step operation: use walking supporting construction to control the overall movement of equipment and tuning；
Step 5, inverted arch and secondary lining: use corollary equipment to carry out inverted arch, geotextiles, splash guard laying, reinforcing bar binding and two
Lining construction.
2. the method for tunnel construction that shield formula multi-arm development machine as claimed in claim 1 combines with New Austrian Tunneling Method, it is special
Levy and be that and carry out according to following order: use development machine to realize tunnel excavation → collection quarrel device cooperation belt feeder muck removal → use
Steel arch-shelf fitting machine and shotcrete robot immediate support → inverted arch pouring construction → geotextiles, splash guard laying → secondary lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646165.5A CN106285691B (en) | 2016-08-05 | 2016-08-05 | A kind of method for tunnel construction that shield formula multi-arm development machine is combined with New Austrian Tunneling Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646165.5A CN106285691B (en) | 2016-08-05 | 2016-08-05 | A kind of method for tunnel construction that shield formula multi-arm development machine is combined with New Austrian Tunneling Method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285691A true CN106285691A (en) | 2017-01-04 |
| CN106285691B CN106285691B (en) | 2018-08-03 |
Family
ID=57666942
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|---|---|---|---|
| CN201610646165.5A Active CN106285691B (en) | 2016-08-05 | 2016-08-05 | A kind of method for tunnel construction that shield formula multi-arm development machine is combined with New Austrian Tunneling Method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145315A (en) * | 2019-05-13 | 2019-08-20 | 中铁十六局集团第四工程有限公司 | A kind of driving method weakening city shallow tunnel concussion of blasting |
| CN110424990A (en) * | 2019-07-11 | 2019-11-08 | 华北科技学院 | A kind of driving poured support construction equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007092412A (en) * | 2005-09-29 | 2007-04-12 | Shimizu Corp | Recovery method for shield machine, and shield machine using the same |
| JP2011246977A (en) * | 2010-05-27 | 2011-12-08 | Kajima Corp | Starting method of tunnel boring machine and starting mechanism of tunnel boring machine |
| CN103557013A (en) * | 2013-11-06 | 2014-02-05 | 王静 | Annular steel structure supporting construction method with open type TBM (tunnel boring machine) |
| CN103711504A (en) * | 2013-12-18 | 2014-04-09 | 西南交通大学 | Propelling method for combined portion between shield tunnel segment and mine tunnel segment in subway tunnel |
-
2016
- 2016-08-05 CN CN201610646165.5A patent/CN106285691B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007092412A (en) * | 2005-09-29 | 2007-04-12 | Shimizu Corp | Recovery method for shield machine, and shield machine using the same |
| JP2011246977A (en) * | 2010-05-27 | 2011-12-08 | Kajima Corp | Starting method of tunnel boring machine and starting mechanism of tunnel boring machine |
| CN103557013A (en) * | 2013-11-06 | 2014-02-05 | 王静 | Annular steel structure supporting construction method with open type TBM (tunnel boring machine) |
| CN103711504A (en) * | 2013-12-18 | 2014-04-09 | 西南交通大学 | Propelling method for combined portion between shield tunnel segment and mine tunnel segment in subway tunnel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145315A (en) * | 2019-05-13 | 2019-08-20 | 中铁十六局集团第四工程有限公司 | A kind of driving method weakening city shallow tunnel concussion of blasting |
| CN110424990A (en) * | 2019-07-11 | 2019-11-08 | 华北科技学院 | A kind of driving poured support construction equipment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285691B (en) | 2018-08-03 |
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