CN106437758A - Upper and lower integral whole shield tunnel segment lining structure - Google Patents
Upper and lower integral whole shield tunnel segment lining structure Download PDFInfo
- Publication number
- CN106437758A CN106437758A CN201611159542.9A CN201611159542A CN106437758A CN 106437758 A CN106437758 A CN 106437758A CN 201611159542 A CN201611159542 A CN 201611159542A CN 106437758 A CN106437758 A CN 106437758A
- Authority
- CN
- China
- Prior art keywords
- jurisdiction
- tunnel
- section
- ring
- shield tunnel
- 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
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 16
- 230000002159 abnormal effect Effects 0.000 abstract 3
- 238000009435 building construction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
An upper and lower integral whole shield tunnel segment lining structure, including an upper section tunnel and a lower section tunnel, is characterized in that the upper section tunnel and the lower section tunnel form an '8' shape integral whole shield tunnel segment lining structure, more concretely the structure comprises, an upper pipe segment of a circular arc shape pieced together to form a major arc upper tunnel pipe segment ring, a lower pipe segment of the circular arc shape pieced together to form a major arc lower tunnel pipe segment ring; the upper section tunnel pipe segment ring and the lower section tunnel pipe segment ring pieced together to form an '8' shape structure ring through an abnormal shape connecting pipe segment of a shape of (img file = 'DDA0001181275390000011.TIF' wi = '126' he = '55'/); multiple structure rings then pieced together in the longitude direction and forms an '8' shape integral whole shield tunnel pipe segment lining structure; the structure above the abnormal shape connecting pipe segment being as the upper section tunnel, the structure below the abnormal shape connecting pipe segment being as the lower section tunnel. The kind of upper and lower integral whole shield tunnel segment lining, has strong integrating ability, high strength, good load bearing capability, can effectively control the sinking and lowering of the ground, guaranteeing the safety of the surrounding building constructions, lowering the degree of construction difficulty, and increasing the efficiency of construction.
Description
Technical field
The present invention relates to a kind of shield tunnel segment lining structure.
Background technology
With the continuous improvement of mechanization degree and manufacturing industry level, Shield Construction Technique has to ground disturbance because of which
The advantage such as little, environmental effect is little, speed of application is fast, has been increasingly becoming the main side that the underground engineerings such as urban subway are built
Method.Shield-bored tunnels mostly are double track tunnel, usually the parallel tunnel of left and right line.But under special geologic condition, it is avoidance
Some underground structures, structures, bi-directional subway tunnel can take the overlapping shield tunnel of upper and lower separate type.This overlap up and down
Shield tunnel is to form detached upper and lower two tunnel structures one after another by shield machine digging excavation, segment assembly.As Shenzhen
Line 2 Metro, No. 3 lines, No. 5 lines of Guangzhou Track Traffic etc. all due to various conditions restriction and in Subway Tunnel partially or fully
Take the overlapping shield tunnel of this upper and lower separate type.
Separate type overlapping shield tunnel generally has the features such as overlap clear distance is little, overlap distance is long, its sequence of construction up and down
For：The offline tunnel driving → interlayer Stabilizing Grout → offline tunnel frame that takes the lead in is supported and protects → reach the standard grade tunneling shield to tunnel
→ tunnel grouting of reaching the standard grade is reinforced.There is many engineering challenges and drawback in process of construction in the overlapping shield tunnel of separate type：(1)
Reach the standard grade in tunnel excavating process and additional stress can be produced to offline tunnel, so as to cause offline tunnel deformation；(2) tunnel of reaching the standard grade is applied
Unloading effect after work may cause offline tunnel to swell；(3) offline tunnel frame is supported speed and tunnel of reaching the standard grade
Assembled speed must be mated, and will otherwise cause tunnel deformation；(4) vertical height of work progress is big, to stratum and top-out
The impact of thing is larger, Land-Subsidence Control difficulty.
Content of the invention
The goal of the invention of the present invention is to provide a kind of upper and lower integral type shield tunnel segment lining structure, one about this kind
Formula shield tunnel segment lining structure, globality is strong, intensity is high, and bearing capacity is good, can effective control surface subsidence, guarantee periphery
Safe and its difficulty of construction of construction of structures reduces, efficiency of construction is improved.
The technical scheme adopted by the invention for realizing the object of the invention is, a kind of upper and lower integral type shield tunnel segment lining
Structure, including top tunnel and bottom tunnel, it is characterised in that：Described top tunnel and bottom tunnel constitute " 8 " font
Integral type shield tunnel segment lining structure, which is specifically constituted is：
The assembled top tunneltron loop for forming major arc shape of the upper tube piece ring of multiple circular arcs, under multiple circular arcs
The assembled bottom tunneltron loop for forming major arc shape of portion section of jurisdiction ring；Top tunneltron loop and bottom tunneltron loop pass throughThe abnormity connection pipe sheet assembling of shape forms the structure ring of " 8 " font；Longitudinal direction assembly forms " 8 " font to multiple structure rings again
Integral type shield tunnel segment lining；Structure more than abnormity connection section of jurisdiction is top tunnel, under following structure is
Portion tunnel.
Compared with prior art, the invention has the beneficial effects as follows：
First, the integral type shield tunnel segment lining structure of the present invention, eliminates the overlapping shield tunnel up and down of separate type
Interlayer soil between structure, its globality is higher, and structure is more stable, firm, can more effectively control surface subsidence, ensure periphery
The safety of construction of structures.
2nd, after large-scale shield machine is disposably excavated, disposable assembled shaping can obtain the upper next of the present invention
Body formula shield tunnel construction, than excavation twice, twice assembly, reduces disturbance of the construction to stratum, the shadow that constructs to stratum
Sound is less, can also better control over surface subsidence.
3rd, once excavate, once assembled than excavating twice, assembled twice, also significantly improve efficiency of construction.And
And, the integral type shield tunnel construction up and down of the present invention, it is not necessary to arrange and remove the construction journey such as the support support in offline tunnel
Sequence, further increases efficiency of construction.
Further, the abnormity of the present invention connects the left side of section of jurisdiction, the isometric but end in the right not in the same horizontal line；The left side
The high abnormity connection section of jurisdiction in end is left high abnormity connection section of jurisdiction, by 180 ° of left high abnormity connection section of jurisdiction left rotation and right rotation right height
Abnormity connection section of jurisdiction；During multiple structure ring assembly, left high abnormity connection section of jurisdiction and right high abnormity connection section of jurisdiction are used alternatingly.
So, the staggered joint erection of section of jurisdiction seam is realized between structure ring, improves the longitudinal rigidity of tunnel structure, can be more effective
Control tunnel differential settlement；Meanwhile, the staggered joint erection of section of jurisdiction seam, also reduce the deflection of liner structure, seam is more
It is close to, the water resistance of whole pipe-plate lining structure can be improved.
Further, the bottom section of jurisdiction thickness of the present invention is 1.5-2 times of top section of jurisdiction thickness.The assembly of upper tube piece ring
Connector is 3 curved bolts, and the connector of lower tube piece ring assembly is 5 curved bolts.
The intensity in the high bottom tunnel of bearing requirements is so strengthened, the carrying energy of whole tunnel structure can be ensured well
Power and safety, while reducing the intensity in the relatively low top tunnel of bearing requirements and using material, the economy for meeting constructing tunnel will
Ask.
Further, the top section of jurisdiction of the present invention and bottom section of jurisdiction are 5, the radian of each top section of jurisdiction or bottom section of jurisdiction
It is 44 °.
So section of jurisdiction size is suitable, had both facilitated the prefabricated of section of jurisdiction and transport, and while the assembled workload of section of jurisdiction is also less, had applied
Work efficiency high.
Further, the assembled connector in multiple structure rings longitudinal direction of the present invention is latch.
In such manner, it is possible to more convenient and quicker realize the assembled connection in longitudinal direction between structure ring.
Further, the top tunneltron loop of the present invention and bottom tunneltron loop pass throughThe special-shaped connecting tube of shape
The concrete structure of the assembled structure ring for forming " 8 " font of piece is：The left upper end of abnormity connection section of jurisdiction and upper right side are all curved by 3
Bolt is connected with top tunneltron loop；The lower-left end of abnormity connection section of jurisdiction and bottom righthand side are all by 5 curved bolts and bottom tunnel
Deferent loop connects.
The bearing capacity in bottom tunnel so ensure that, meanwhile, reduce construction and the materials in top tunnel, take into account tunnel
The safety of structure and economy.
Further, two horizontal injected holes are all left on the left side of the abnormity connection section of jurisdiction of the present invention, the right.
So, after the completion of tunnel-liner assembly, injected hole can be passed through to soil around the connecting portion in upper and lower tunnel
Body carries out grouting and reinforcing, improves bulk strength and the bearing capacity of tunnel structure further.
The present invention is described in further detail with reference to the accompanying drawings and detailed description
Description of the drawings
Fig. 1 is the side structure schematic view of the embodiment of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Specific embodiment
Embodiment
Fig. 1-3 is illustrated, a kind of specific embodiment of the present invention is that a kind of upper and lower integral type shield tunnel segment lining is tied
Structure, including top tunnel and bottom tunnel, it is characterised in that：Described top tunnel and bottom tunnel constitute the one of " 8 " font
Body formula shield tunnel segment lining structure, which is specifically constituted is：
The top section of jurisdiction 1 ring assembly of multiple circular arcs forms the top tunneltron loop of major arc shape, multiple circular arcs
The assembled bottom tunneltron loop for forming major arc shape of 2 ring of bottom section of jurisdiction；Top tunneltron loop and bottom tunneltron loop lead to
CrossThe abnormity connection pipe sheet assembling of shape forms the structure ring 4 of " 8 " font；Longitudinal direction assembly forms " 8 " to multiple structure rings 4 again
The integral type shield tunnel segment lining structure of font；Structure more than abnormity connection section of jurisdiction is top tunnel, following knot
Structure is bottom tunnel.
The left side of the abnormity connection section of jurisdiction of this example, the isometric but end in the right are not in the same horizontal line；Left-hand end is high
Abnormity connection section of jurisdiction is left high abnormity connection section of jurisdiction 3a, by 180 ° of left high abnormity connection section of jurisdiction 3a left rotation and right rotation right high abnormity
Connection section of jurisdiction 3b.During 4 assembly of multiple structure rings, left high abnormity connection section of jurisdiction 3a and right high special-shaped connection section of jurisdiction 3b are used alternatingly.
I.e. previous structure ring 4 is as using left high abnormity connection section of jurisdiction 3a, then this latter configuration ring 4 is using right high abnormity connection section of jurisdiction
3b.
2 thickness of bottom section of jurisdiction of this example is 1.5-2 times of 1 thickness of top section of jurisdiction；The connector of top section of jurisdiction 1 ring assembly
For 3 curved bolts, the connector of 2 ring of bottom section of jurisdiction assembly is 5 curved bolts.
The top section of jurisdiction 1 of this example and bottom section of jurisdiction 2 are 5, and the radian of each top section of jurisdiction 1 or bottom section of jurisdiction 2 is
44°.
The connector that 4 longitudinal direction of multiple structure rings of this example is assembled is latch.
The top tunneltron loop of this example and bottom tunneltron loop pass throughThe abnormity connection pipe sheet assembling of shape is formed
The concrete structure of the structure ring 4 of " 8 " font is：The abnormity connection left upper end of section of jurisdiction and upper right side all by 3 curved bolts with upper
Portion's tunneltron loop connection；The lower-left end of abnormity connection section of jurisdiction and bottom righthand side are all by 5 curved bolts and bottom tunneltron loop
Connection.
Two horizontal injected hole 3a are all left on the left side of the abnormity connection section of jurisdiction of this example, the right.
Claims (7)
1. a kind of upper and lower integral type shield tunnel segment lining structure, including top tunnel and bottom tunnel, it is characterised in that：Institute
The top tunnel that states and bottom tunnel constitute the integral type shield tunnel segment lining of " 8 " font, and its specific composition is：
The assembled top tunneltron loop for forming major arc shape of top section of jurisdiction (1) ring of multiple circular arcs, under multiple circular arcs
The assembled bottom tunneltron loop for forming major arc shape of portion section of jurisdiction (2) ring；Top tunneltron loop and bottom tunneltron loop lead to
CrossThe abnormity connection pipe sheet assembling of shape forms the structure ring (4) of " 8 " font；Multiple structure ring (4) assembled formation in longitudinal direction again
The integral type shield tunnel segment lining structure of " 8 " font；Structure more than abnormity connection section of jurisdiction is top tunnel, below
Structure is bottom tunnel.
2. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described abnormity
The left side of connection section of jurisdiction, the isometric but end in the right are not in the same horizontal line；The high abnormity connection section of jurisdiction of left-hand end is left height
Abnormity connection section of jurisdiction (3a), by left high 180 ° of section of jurisdiction (3a) left rotation and right rotation of abnormity connection right high abnormity connection section of jurisdiction (3b)；
During multiple structure ring (4) assembly, left high abnormity connection section of jurisdiction (3a) and right high abnormity connection section of jurisdiction (3b) are used alternatingly.
3. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described bottom
Section of jurisdiction (2) thickness is 1.5-2 times of top section of jurisdiction (1) thickness；The connector of top section of jurisdiction (1) ring assembly is 3 curved bolts,
The connector of bottom section of jurisdiction (2) ring assembly is 5 curved bolts.
4. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described top
Section of jurisdiction (1) and bottom section of jurisdiction (2) are 5, and the radian of each top section of jurisdiction (1) or bottom section of jurisdiction (2) is 44 °.
5. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described is multiple
The assembled connector in structure ring (4) longitudinal direction is latch.
6. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described top
Tunneltron loop and bottom tunneltron loop pass throughThe abnormity connection pipe sheet assembling of shape forms the structure ring (4) of " 8 " font
Concrete structure be：The left upper end of abnormity connection section of jurisdiction and upper right side are all connected with top tunneltron loop by 3 curved bolts；
The lower-left end of abnormity connection section of jurisdiction and bottom righthand side are all connected with bottom tunneltron loop by 5 curved bolts.
7. upper and lower integral type shield tunnel segment lining structure according to claim 1, it is characterised in that：Described abnormity
Two horizontal injected holes are all left on the left side of connection section of jurisdiction, the right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159542.9A CN106437758B (en) | 2016-12-15 | 2016-12-15 | Upper and lower integral type shield tunnel segment lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159542.9A CN106437758B (en) | 2016-12-15 | 2016-12-15 | Upper and lower integral type shield tunnel segment lining structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437758A true CN106437758A (en) | 2017-02-22 |
| CN106437758B CN106437758B (en) | 2018-10-19 |
Family
ID=58216676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611159542.9A Active CN106437758B (en) | 2016-12-15 | 2016-12-15 | Upper and lower integral type shield tunnel segment lining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437758B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178378A (en) * | 2017-06-28 | 2017-09-19 | 西南交通大学 | A kind of three targes structure builds the pipe sheet assembling structure and construction method of subway station |
| CN110486039A (en) * | 2019-09-26 | 2019-11-22 | 西南交通大学 | A kind of multiduty shield tunnel lining structure |
| CN113863377A (en) * | 2021-09-13 | 2021-12-31 | 长江勘测规划设计研究有限责任公司 | Immersed tube structure suitable for high-water pressure condition and pouring method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315597A (en) * | 1988-06-16 | 1989-12-20 | Ishikawajima Constr Materials Co Ltd | Covering cylindrical wall body for vertical twin drilled hole |
| JPH01322098A (en) * | 1988-06-23 | 1989-12-27 | Ishikawajima Constr Materials Co Ltd | Cylindrical wall body for shielding drilled vertical two-row hole |
| JPH0258699A (en) * | 1988-08-25 | 1990-02-27 | Ishikawajima Constr Materials Co Ltd | Structure of covering cylindrical wall body for excavated hole |
| JPH02115497A (en) * | 1988-10-25 | 1990-04-27 | Yoshiji Matsumoto | Vertical multi-circle type shield tunnel |
| JPH0325195A (en) * | 1989-06-21 | 1991-02-01 | Ohbayashi Corp | Segment assembling method and shield machine in multi-connected shield method |
| JPH062492A (en) * | 1992-06-22 | 1994-01-11 | Taisei Corp | Shield excavating machine and erecting method for shield tunnel |
| JPH0681591A (en) * | 1992-09-04 | 1994-03-22 | Taisei Corp | Construction method for longitudinal multiple shielded tunnel |
| CN101067374A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Single-hole double-layer overlapping tunnel structure and construction method thereof |
| CN103277110A (en) * | 2013-05-13 | 2013-09-04 | 中铁十四局集团有限公司 | Construction method of overlapped shield tunnel |
-
2016
- 2016-12-15 CN CN201611159542.9A patent/CN106437758B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315597A (en) * | 1988-06-16 | 1989-12-20 | Ishikawajima Constr Materials Co Ltd | Covering cylindrical wall body for vertical twin drilled hole |
| JPH01322098A (en) * | 1988-06-23 | 1989-12-27 | Ishikawajima Constr Materials Co Ltd | Cylindrical wall body for shielding drilled vertical two-row hole |
| JPH0258699A (en) * | 1988-08-25 | 1990-02-27 | Ishikawajima Constr Materials Co Ltd | Structure of covering cylindrical wall body for excavated hole |
| JPH02115497A (en) * | 1988-10-25 | 1990-04-27 | Yoshiji Matsumoto | Vertical multi-circle type shield tunnel |
| JPH0325195A (en) * | 1989-06-21 | 1991-02-01 | Ohbayashi Corp | Segment assembling method and shield machine in multi-connected shield method |
| JPH062492A (en) * | 1992-06-22 | 1994-01-11 | Taisei Corp | Shield excavating machine and erecting method for shield tunnel |
| JPH0681591A (en) * | 1992-09-04 | 1994-03-22 | Taisei Corp | Construction method for longitudinal multiple shielded tunnel |
| CN101067374A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Single-hole double-layer overlapping tunnel structure and construction method thereof |
| CN103277110A (en) * | 2013-05-13 | 2013-09-04 | 中铁十四局集团有限公司 | Construction method of overlapped shield tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 方东明等: "小间距长距离上下重叠盾构隧道施工关键技术", 《隧道建设》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178378A (en) * | 2017-06-28 | 2017-09-19 | 西南交通大学 | A kind of three targes structure builds the pipe sheet assembling structure and construction method of subway station |
| CN110486039A (en) * | 2019-09-26 | 2019-11-22 | 西南交通大学 | A kind of multiduty shield tunnel lining structure |
| CN110486039B (en) * | 2019-09-26 | 2024-05-07 | 西南交通大学 | Multipurpose shield tunnel lining structure |
| CN113863377A (en) * | 2021-09-13 | 2021-12-31 | 长江勘测规划设计研究有限责任公司 | Immersed tube structure suitable for high-water pressure condition and pouring method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106437758B (en) | 2018-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101338678B (en) | Supporting arch hidden digging top-down construction method | |
| CN205422813U (en) | Detachable filling and retaining wall | |
| CN103321659B (en) | Large-diameter tube curtain support underground excavation construction super-shallow burying large-section subway station structure and construction method | |
| CN105317459B (en) | A kind of subregion placement method for being used to control tight roof large area caving disaster | |
| JP7394252B1 (en) | Protruding type wind duct structure perpendicular to the vertical direction and construction method at deep subway station | |
| CN108756894B (en) | Tunnel micro- three step top Core Soil construction | |
| CN108005664A (en) | A kind of hole pile construction method of platform structure | |
| CN103195455B (en) | Weak geological environment large cross-section tunnel construction supporting system and construction method | |
| CN106223967B (en) | A kind of great burying rectangle or class rectangle tunneling shield constructing device and method | |
| CN104653187B (en) | Method for excavating geological large-section tunnel with water-rich sand layer | |
| CN106640121A (en) | Supporting structure for six-pilot-holes large-section metro station undercrossing existing line | |
| CN102155234B (en) | Excavation construction method for unsymmetrical small-space tunnel | |
| CN103628885A (en) | Tunnel exit cover-excavation construction method of Ultra-shadow buried tunnel | |
| CN106869969A (en) | A kind of excavation supporting construction method of soft rock large section tunnel | |
| CN107023300A (en) | A kind of use canopy, which is defended the doctrine, builds the construction method of subway station | |
| CN109611103B (en) | Method for reinforcing shield section suspended boulder group | |
| CN106437760A (en) | Large-section tunnel novel multi-layer lining structure | |
| CN106812540A (en) | A kind of shield launching element wall closing water sealing consolidation structure and construction technology | |
| CN106437758B (en) | Upper and lower integral type shield tunnel segment lining structure | |
| CN106089207B (en) | Super high seam working face gob side entry driving thin coal pillar stays equipment, method | |
| CN107165641A (en) | High inclination-angle ladder way opposite direction excavating construction method in thin layer breaking up hard rock stratum | |
| CN112963168B (en) | Construction method for bridgehead gate of disturbance sensitive stratum ultra-small clear distance large-section group tunnel | |
| CN108374674B (en) | Six pilot tunnels, 12 step Underground Space Excavation method for protecting support | |
| CN109538236A (en) | A kind of tunnel structure and tunnel construction method | |
| CN206581945U (en) | Both wired supporting construction is worn under a kind of six pilot tunnels big cross section subway station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |