CN108222947B - A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion - Google Patents
A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion Download PDFInfo
- Publication number
- CN108222947B CN108222947B CN201711433447.8A CN201711433447A CN108222947B CN 108222947 B CN108222947 B CN 108222947B CN 201711433447 A CN201711433447 A CN 201711433447A CN 108222947 B CN108222947 B CN 108222947B
- Authority
- CN
- China
- Prior art keywords
- tunnel
- top bar
- super
- span
- pilot
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
Abstract
The invention belongs to Tunnel Engineering technical fields, and in particular to a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion.The construction method improves for leading pilot drift country rock in the construction of top bar CD method, needs the case where carrying out engineering method conversion (country rock is changed from IV to III grade or II grade), under the premise of guaranteeing that leading pilot tunnel and rear row pilot drift are not stopped work, realize super-span constructing tunnel by the conversion of two benching tunnelling method of top bar CD normal direction, thus influence of the engineering method conversion in super-span tunnel to the construction period can be greatly reduced, there is significant economic and social benefit.
Description
Technical field
The invention belongs to Tunnel Engineering technical fields, and in particular to a kind of two step of super-span tunnel top bar CD normal direction
The construction method of method conversion.
Background technique
Different from single two lane of hole, three lanes tunnel, single-hole with four lanes tunnel mostly uses substep or piecemeal to excavate.Country rock grade
Not Bian Hua when, influence of the engineering method conversion to the duration is very big.By taking the conversion of two benching tunnelling method of top bar CD normal direction as an example, when leading pilot tunnel
When face country rock improves (country rock is changed from IV to III grade or II grade), needs to carry out engineering method conversion, often existing pilot tunnel is slapped
Sub- face suspension of works can carry out engineering method conversion when same to the leading pilot tunnel section of row pilot drive after, cause since then
Leading pilot tunnel shut-down will seriously affect construction speed.It is, therefore, desirable to provide the reasonable conversion mode between different engineering methods, to subtract
Small engineering method converts the influence to the super-span constructing tunnel duration.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of conversion of two benching tunnelling method of super-span tunnel top bar CD normal direction
Construction method, row pilot drive to the same section of leading pilot tunnel can carry out engineering method turn after stopping work, waiting to avoid leading pilot tunnel
Change and caused by serious construction delay.
The present invention is achieved by the following technical solutions:
A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion, the construction method is leading
Under the premise of pilot tunnel and rear row pilot drift are not stopped work, temporarily propped up by gradually increasing the leading pilot tunnel of top bar to median septum
The excavation area of side is protected, corresponding rear row pilot drive area constantly reduces, until the excavation area of the leading pilot tunnel of top bar
It is extended to the entire upper half section in tunnel, rear row pilot drive area is then reduced to zero, realizes super-span constructing tunnel by appearing on the stage
The conversion of two benching tunnelling method of rank CD normal direction.
Further, the Specific construction process of the construction method is as follows:
(1) leading pilot tunnel is excavated: on the basis of top bar CD method leading pilot drive, to the side close to rear row pilot tunnel
It is digged, leading pilot tunnel preliminary bracing of constructing applies median septum gib；
(2) row pilot tunnel after excavating: with digging for leading pilot tunnel, the excavation area of rear row pilot tunnel constantly reduces；After construction
Median septum gib is removed in row pilot tunnel preliminary bracing；
(3) left side of getting out of a predicament or an embarrassing situation is excavated, and applies left side preliminary bracing of getting out of a predicament or an embarrassing situation in time；
(4) right side of getting out of a predicament or an embarrassing situation is excavated, and applies right side preliminary bracing of getting out of a predicament or an embarrassing situation in time；
(5) Core Soil of getting out of a predicament or an embarrassing situation is excavated；
(6) inverted arch, and inverted arch preliminary bracing of constructing are excavated；
(7) step (1)~(6) are repeated, the circulation for carrying out tunnel is excavated and preliminary bracing, during tunnel excavation, first
The excavation area of row pilot tunnel constantly expands, and corresponding rear row pilot drive area constantly reduces, final leading pilot drive section
It is extended to the entire upper half section in tunnel, rear row pilot drive area is then reduced to zero, completes super-span tunnel top bar CD method
The engineering method constructed to two benching tunnelling methods of constructing converts.
Further, the leading pilot tunnel in tunnel often pushes ahead 5~10m, and leading pilot tunnel expands to the side close to rear row pilot tunnel
1~2m is dug, until leading pilot tunnel is digged to the entire section in tunnel.
Further, the super-span tunnel be single-hole with four lanes vcehicular tunnel or excavate span be not less than 18m its
His tunnel.
Advantageous effects of the invention:
The construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion provided by the invention, is guaranteeing in advance
Under the premise of pilot tunnel and rear row pilot drift are not stopped work, super-span constructing tunnel is realized by top bar CD normal direction two
The conversion of rank method, row pilot drive is same to leading pilot tunnel after needing leading pilot tunnel to stop work when avoiding the conversion of current engineering method, wait
One section can carry out engineering method conversion and caused by serious construction delay, substantially reduce the conversion of super-span tunnel engineering method to applying
The influence of work duration, thus there is significant economic and social benefit.
Detailed description of the invention
Fig. 1 is that the construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion in the embodiment of the present invention is faced
Figure；
Fig. 2 is that the construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion in the embodiment of the present invention is overlooked
Figure；
Appended drawing reference: 1. excavate leading pilot tunnel；2. leading pilot tunnel preliminary bracing；3. median septum gib；4. row is led after
Hole；Row pilot tunnel preliminary bracing after 5.；6. left side of getting out of a predicament or an embarrassing situation；7. left side of getting out of a predicament or an embarrassing situation applies preliminary bracing；8. right side of getting out of a predicament or an embarrassing situation；Under 9.
Preliminary bracing on the right side of step；10. Core Soil of getting out of a predicament or an embarrassing situation；11. inverted arch；12. inverted arch preliminary bracing；13. top bar CD method is constructed；
14. liang benching tunnelling method construction.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any substitution done on the essence and scope of the present invention being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to of the invention thin
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The present invention can also be understood completely in description.
Embodiment 1
The present embodiment provides a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion, the sides
Method leading pilot drift country rock suitable for the construction of top bar CD method improves, needs the case where carrying out engineering method conversion, specially
Changed suitable for country rock from IV to III grade or II grade, under the premise of leading pilot tunnel and rear row pilot drift are not stopped work, is led to
It crosses and gradually increases excavation area of the leading pilot tunnel of top bar to median septum gib side, until the entire upper half section in tunnel,
Realize super-span constructing tunnel by the conversion of two benching tunnelling method of top bar CD normal direction.Wherein, above-mentioned country rock grade is according to " highway tunnel
Road design specification " the surrounding rock mass classification standard of (JTG_D70-2004) divided, specifically it is divided into I grade of country rock, II
Grade country rock, III grade of country rock, IV grade of country rock and V grade of country rock.
The Specific construction process of the construction method is illustrated with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the specific of the construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion is applied
Work process is as follows:
(1) leading pilot tunnel 1 is excavated: on the basis of top bar CD method leading pilot drive, to close to the one of rear row pilot tunnel
Side is digged, and leading pilot tunnel preliminary bracing 2 of constructing applies median septum gib 3；
(2) row pilot tunnel 4 after excavating: with digging for leading pilot tunnel, the excavation area of rear row pilot tunnel constantly reduces；After construction
Median septum gib 3 is removed in row pilot tunnel preliminary bracing 5；
(3) left side 6 of getting out of a predicament or an embarrassing situation is excavated, and left side of getting out of a predicament or an embarrassing situation in time applies preliminary bracing 7；
(4) right side 8 of getting out of a predicament or an embarrassing situation is excavated, and applies right side preliminary bracing 9 of getting out of a predicament or an embarrassing situation in time；
(5) Core Soil 10 of getting out of a predicament or an embarrassing situation is excavated；
(6) inverted arch 11, and inverted arch preliminary bracing 12 of constructing are excavated；
(7) step (1)~(6) are repeated, the circulation for carrying out tunnel is excavated and preliminary bracing, during tunnel excavation, first
The excavation area of row pilot tunnel constantly expands, and corresponding rear row pilot drive area constantly reduces, final leading pilot drive section
It is extended to the entire upper half section in tunnel, rear row pilot drive area is then reduced to zero, completes super-span tunnel top bar CD method
The engineering method constructed to two benching tunnelling methods of constructing converts.
Direction is excavated in arrow instruction in Fig. 2.
When two benching tunnelling method of super-span tunnel top bar CD normal direction is converted, the leading pilot tunnel in tunnel often pushes ahead 5~
10m, leading pilot tunnel dig 1~2m to the side close to rear row pilot tunnel, until leading pilot tunnel is digged to the entire section in tunnel.
The super-span tunnel is other tunnels that single-hole with four lanes vcehicular tunnel or excavation span are not less than 18m.
Claims (4)
1. a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion, which is characterized in that the construction
Method is not under the premise of leading pilot tunnel and rear row pilot drift are stopped work, by gradually increasing the leading pilot tunnel of top bar in
The excavation area of next door gib side, corresponding rear row pilot drive area constantly reduces, until the leading pilot tunnel of top bar
Excavation area be extended to the entire upper half section in tunnel, rear row pilot drive area is then reduced to zero, realizes super-span tunnel
The conversion constructed by two benching tunnelling method of top bar CD normal direction.
2. a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion according to claim 1,
It is characterized in that, the Specific construction process of the construction method is as follows:
(1) it excavates leading pilot tunnel: on the basis of top bar CD method leading pilot drive, being carried out to the side close to rear row pilot tunnel
It digs, leading pilot tunnel preliminary bracing of constructing applies median septum gib；
(2) row pilot tunnel after excavating: with digging for leading pilot tunnel, the excavation area of rear row pilot tunnel constantly reduces；Row is led after construction
Median septum gib is removed in hole preliminary bracing；
(3) left side of getting out of a predicament or an embarrassing situation is excavated, and applies left side preliminary bracing of getting out of a predicament or an embarrassing situation in time；
(4) right side of getting out of a predicament or an embarrassing situation is excavated, and applies right side preliminary bracing of getting out of a predicament or an embarrassing situation in time；
(5) Core Soil of getting out of a predicament or an embarrassing situation is excavated；
(6) inverted arch, and inverted arch preliminary bracing of constructing are excavated；
(7) step (1) ~ (6) are repeated, the circulation for carrying out tunnel is excavated and preliminary bracing, during tunnel excavation, leading pilot tunnel
Excavation area constantly expand, it is corresponding after row pilot drive area constantly reduce, final leading pilot drive section is extended to
The entire upper half section in tunnel, rear row pilot drive area are then reduced to zero, complete super-span tunnel top bar CD method construct to
The engineering method conversion of two benching tunnelling methods construction.
3. a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion according to claim 1,
It is characterized in that, the leading pilot tunnel in tunnel often pushes ahead 5 ~ 10m, and leading pilot tunnel digs 1 ~ 2m to the side close to rear row pilot tunnel, directly
It digs to leading pilot tunnel to the entire section in tunnel.
4. a kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion according to claim 1,
It is characterized in that, the super-span tunnel is other tunnels that single-hole with four lanes vcehicular tunnel or excavation span are not less than 18m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433447.8A CN108222947B (en) | 2017-12-26 | 2017-12-26 | A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433447.8A CN108222947B (en) | 2017-12-26 | 2017-12-26 | A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108222947A CN108222947A (en) | 2018-06-29 |
| CN108222947B true CN108222947B (en) | 2019-05-21 |
Family
ID=62647890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711433447.8A Active CN108222947B (en) | 2017-12-26 | 2017-12-26 | A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108222947B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979667B (en) * | 2018-07-15 | 2019-09-10 | 中铁二十局集团有限公司 | Penetrating ground crushed zone tunnel top bar interval wall construction method |
| CN109594991A (en) * | 2018-12-29 | 2019-04-09 | 中铁隧道集团二处有限公司 | Shallow Buried Soft Rock Super-large-section tunnel CD method combines rapid constructing method with benching tunnelling method |
| CN109707399B (en) * | 2019-02-21 | 2024-01-30 | 中铁二院工程集团有限责任公司 | Tunnel exit supporting structure and construction method thereof |
| CN112228076B (en) * | 2020-08-27 | 2022-10-18 | 中铁十局集团有限公司 | Fast excavation construction method for hard rock large-span tunnel |
| CN113216976A (en) * | 2021-04-09 | 2021-08-06 | 中交第一公路勘察设计研究院有限公司 | Tunnel HCD excavation method suitable for soft rock and gravel soil |
| CN115142878B (en) * | 2022-07-04 | 2023-05-16 | 中铁十二局集团有限公司 | CRD method subsection linkage rapid construction method for upper soft and lower hard strata |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563671A (en) * | 2004-03-19 | 2005-01-12 | 刘昌用 | Dormant digging and separating construction method for underground two layers and multilayer composite lining structure |
| CN1873187A (en) * | 2006-06-23 | 2006-12-06 | 董淑练 | Method of digging for tunnel construction |
| CN102182466A (en) * | 2011-04-08 | 2011-09-14 | 中铁上海设计院集团有限公司 | Excavating method for jump-digging of double-side wall guide pit combined arch part of tunnel |
| CN104879131A (en) * | 2015-05-06 | 2015-09-02 | 中国电建集团华东勘测设计研究院有限公司 | Large-span tunnel excavation method for upper soft and lower hard compound strata |
| CN107060771A (en) * | 2016-12-28 | 2017-08-18 | 广东省长大公路工程有限公司 | Middle short tunnel is unidirectionally appeared excavation method |
-
2017
- 2017-12-26 CN CN201711433447.8A patent/CN108222947B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563671A (en) * | 2004-03-19 | 2005-01-12 | 刘昌用 | Dormant digging and separating construction method for underground two layers and multilayer composite lining structure |
| CN1873187A (en) * | 2006-06-23 | 2006-12-06 | 董淑练 | Method of digging for tunnel construction |
| CN102182466A (en) * | 2011-04-08 | 2011-09-14 | 中铁上海设计院集团有限公司 | Excavating method for jump-digging of double-side wall guide pit combined arch part of tunnel |
| CN104879131A (en) * | 2015-05-06 | 2015-09-02 | 中国电建集团华东勘测设计研究院有限公司 | Large-span tunnel excavation method for upper soft and lower hard compound strata |
| CN107060771A (en) * | 2016-12-28 | 2017-08-18 | 广东省长大公路工程有限公司 | Middle short tunnel is unidirectionally appeared excavation method |
Non-Patent Citations (2)
| Title |
|---|
| 上台阶CD法在客专某浅埋隧道中的开发应用;褚晓辉;《科学之友》;20101031(第10期);第55-56页 |
| 王村隧道采用上台阶CD法施工监测结果与分析;邓永峰、王龙、韩冰凌;《公路交通科技》;20170731(第7期);第70-71页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108222947A (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108222947B (en) | A kind of construction method of two benching tunnelling method of super-span tunnel top bar CD normal direction conversion | |
| CN100487224C (en) | Rapid-construction method for rapid change of small-section into large-section tunnel | |
| CN105240013B (en) | Broadwall N00 engineering methods | |
| CN104314578B (en) | Construction method for continuous construction by using shield construction machine and matched station thereof | |
| CN110219654A (en) | The leading construction method of mud stone multiple-arch tunnel side pilot tunnel | |
| CN104632235A (en) | Method for expanding excavation of large-diameter shield tunnel for subway station construction through pile arch wall support | |
| CN108166979A (en) | A kind of construction method of super-span tunnel top bar two side-wall pilot tunnel | |
| CN103590406A (en) | Construction method for synchronously excavating ultra-large type deep foundation pits in partitioned mode | |
| CN104165056A (en) | Construction method for excavating water-rich shallow underground excavation tunnel | |
| CN108150176A (en) | A kind of excavation method of different surrounding rock rank super-span vcehicular tunnel | |
| WO2019015362A1 (en) | Shallow seam water conservation mining method and application thereof | |
| CN205532615U (en) | Super large section tunnel excavates structure | |
| CN103993885A (en) | Construction method for underground excavation tunnel side-direction hole opening supporting system | |
| CN102767375B (en) | Tunnel construction method | |
| CN110242305A (en) | A kind of inclined shaft applies the construction technique in main hole into single side heading method | |
| CN206111199U (en) | Weak surrounding rock super large section tunnel excavation and support structure | |
| CN104564085A (en) | Comprehensive construction method for excavating tunnel with super large cross-section under urban super shallow-buried condition | |
| CN103291312B (en) | The shield machine of three-dimensional slip casting can be realized | |
| CN108131143A (en) | A kind of construction method of super-span tunnel top bar CD methods | |
| CN105275487A (en) | Long-arm mining N00 construction method ventilation system | |
| CN105401973A (en) | Method for performing extraction treatment on corner gas on work faces of adjacent roadways | |
| CN106640155A (en) | Large-span underground space structure and construction method thereof | |
| CN106812156A (en) | A kind of assembled hypogee and its construction method | |
| CN204457789U (en) | A kind of stake arch wall supports the subway station digging large diameter shield tunnel and build | |
| CN203835401U (en) | Construction structure for arranging construction vertical shaft above underground engineering |
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 | ||
| GR01 | Patent grant |