CN107905798A - The method that flat top wall boring construction is carried out using central drift method - Google Patents
The method that flat top wall boring construction is carried out using central drift method Download PDFInfo
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- CN107905798A CN107905798A CN201711058053.9A CN201711058053A CN107905798A CN 107905798 A CN107905798 A CN 107905798A CN 201711058053 A CN201711058053 A CN 201711058053A CN 107905798 A CN107905798 A CN 107905798A
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- hole
- preliminary bracing
- carried out
- top wall
- flat top
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims abstract description 4
- 238000007569 slipcasting Methods 0.000 claims abstract description 3
- 239000002689 soil Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
- E21D11/381—Setting apparatus or devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention provides a kind of method that flat top wall boring construction is carried out using central drift method, including：Hole and preliminary bracing is applied in excavating first；Hole and preliminary bracing is applied in excavating second below hole in described first, apply waterproof layer, pour middle part bottom plate, column, concrete roof structure；Hole opposite sides excavates the first side hole and applies preliminary bracing in described first, and hole opposite sides excavates the second side hole and applies preliminary bracing in described second, preliminary bracing closing cyclization is carried out just branch back-grouting；Hole preliminary bracing during segmentation is removed, applies bottom plate and side wall waterproof layer, pours two lining structure of bottom plate and side wall；The remaining middle hole preliminary bracing and temporary support are removed, applies remaining structure waterproof layer and two lining structures, two lining closing cyclization backfill slip casting after carrying out two backings.By above-mentioned technological means, some light sections are resolved into big cross section construction, improve construction safety coefficient, and working procedure of the present invention is simple, making raw material is easy to get.
Description
Technical field
The present invention relates to technical field of building construction, relates in particular to the design suitable for Large Underground space with applying
Work, is particularly suitable for building for Metro Station Structure.
Background technology
When subway entrance or transferring passage are constructed, normally due to the influence of underground utilities and traffic data process, leads to
Standing to be calculated as flat top wall structure, the construction risk that flat top wall structure is carried out using subsurface excavation method is larger.
The content of the invention
In view of the foregoing, the present invention provides a kind of suitable for structure earthing is shallow, there are pile foundation, other undergrounds knot on top
The situation of the barriers such as structure, pipeline can construct, and top thickness of earth covering is effectively ensured, and improve structure section utilization rate
The method that flat top wall boring construction is carried out using central drift method, change big cross section is some light section, abandoned project amount is small, constructs
Safety coefficient is high.
To achieve the above object, the present invention adopts the technical scheme that：One kind is dark using central drift method progress flat top wall
The method of excavation construction, constructing structure include middle hole portion and the side hole portion being formed at left and right sides of the middle hole portion, the method
Comprise the following steps：
A. excavate hole in first and hole top and both sides hole side to hole in described first apply preliminary bracing；
B. hole in second is being excavated in described first below hole and is applying the hole bottom and both sides hole side in hole in described second
Preliminary bracing, sets temporary support in described first in hole and described second between hole；
C. temporary support described in being segmented partial dismantling, applies waterproof layer, pours middle part top plate, bottom plate and center pillar concrete knot
Structure；
D. in described first hole opposite sides excavate the first side hole and apply the hole top in first side hole with it is relatively outer
The preliminary bracing on side hole side, temporary support is added below the hole of first side；
E. hole opposite sides excavates the second side hole in described second, and applies the hole bottom in second side hole and relatively outer
The preliminary bracing on side hole side, pushes up the hole in hole in described first, in the hole in first side hole top and outside hole side, described second
The preliminary bracing closing cyclization at the hole bottom in hole, the hole bottom in second side hole and outside hole side, carries out preliminary bracing back-grouting；
F. the preliminary bracing of the second Zhong Dong both sides is removed in segmentation, apply bottom plate and side wall waterproof layer, pour bottom plate and
Two lining structure of side wall；
G. the preliminary bracing of the first Zhong Dong both sides and remaining temporary support are removed, applies remaining structure waterproof layer and two
Lining structure, two lining closing cyclization, slip casting is backfilled after carrying out two backings.
In the embodiment of the present invention, super-front large pipe shed supporting is carried out before wide open digging in described first and grouting with small pipe is reinforced
The middle hole portion vault and both sides arch side.
In the embodiment of the present invention, vertical interim I-shaped bracing members are added between the top plate and the bottom plate.
In the embodiment of the present invention, super-front large pipe shed supporting is carried out before the wide open digging in the first side and grouting with small pipe is reinforced
First side hole vault and outside arch side.
In the embodiment of the present invention, remaining core soil in advance during hole, the wide open digging in the first side in described first.
In the embodiment of the present invention, using lock foot anchor tube reinforcement walls below hole in being additionally included in described first in a steps
Angle.
In the embodiment of the present invention, using lock foot anchor tube reinforcement walls below hole during described second is additionally included in the b step
Angle.
In the embodiment of the present invention, it is additionally included in the Step d on the outside of the hole of first side using lock foot anchor tube reinforcement walls
Angle.
The present invention makes it have following beneficial effect as a result of above technical scheme：
(1) present invention is decomposed structure section, first construction middle part, divides multi-section cavern to be applied using benching tunnelling method
Work, closing is cyclic in time, then construct successively bottom plate bottom girder, center pillar, middle plate and top plate, after the completion of the construction of middle part permanent structure again
Carry out both sides first branch excavation construction, equally constructed using benching tunnelling method, then from bottom to top successively construction bottom plate, abutment wall and
Top plate, has been effectively ensured structure on two sides and has excavated safety.
(2) present invention can expand to the construction for carrying out multispan big cross section hidden digging structure, be tied for underground garage, market etc.
Structure construction has good application space.
(3) construction method of the present invention is shallow in structure earthing, and there are the barriers such as pile foundation, other underground structures, pipeline on top
Situation can construct, can effectively ensure that top thickness of earth covering, improve structure section utilization rate, construction method of the present invention
Branch's section is few, abandoned project amount is small, structure sediment is controllable
Brief description of the drawings
Fig. 1 is the schematic diagram that the present invention carries out flat top wall boring construction step a using central drift method.
Fig. 2 is the schematic diagram that the present invention carries out flat top wall boring construction step b using central drift method.
Fig. 3 is the schematic diagram that the present invention carries out flat top wall boring construction step c using central drift method.
Fig. 4 is the schematic diagram that the present invention carries out flat top wall boring construction step d using central drift method.
Fig. 5 is the schematic diagram that the present invention carries out flat top wall boring construction step e using central drift method.
Fig. 6 is the schematic diagram that the present invention carries out flat top wall boring construction step f using central drift method.
Fig. 7 is the schematic diagram that the present invention carries out flat top wall boring construction step g using central drift method.
The reference numerals are as follows：
Hole 1 in first；Hole 2 in second；First side hole 3；Second side hole 4；Super-front large pipe shed supporting and grouting with small pipe 5；
Preliminary bracing 6；Lock foot anchor tube 7；Core Soil 8；Temporary support 9；Top plate 10；Bottom plate 11；Center pillar 12.
Embodiment
For the benefit of to the understanding of the present invention, illustrated below in conjunction with attached drawing.
- 7 are please referred to Fig.1, the present invention provides a kind of method that flat top wall boring construction is carried out using central drift method, construction
Structure includes middle hole portion and is formed in the side hole portion of the middle hole portion opposite sides, the described method comprises the following steps：
A. as shown in fig.1, reinforcing the middle hole portion vault and both sides using super-front large pipe shed supporting and grouting with small pipe 5
Encircle side, excavate hole 1 in first and the hole top to hole 1 in described first and both sides hole side apply preliminary bracing 6, hole in described first
1 lower section, which uses, locks the reinforcing of foot anchor tube 7 corner, remaining core soil in advance 8 in 1 digging process of hole in described first；
B. Fig. 2 is referred to, the hole 2 in excavating second below hole 1 in described first, hole bottom and phase to hole 2 in described second
To both sides hole side apply preliminary bracing 6, temporary support 9 is set in described first in hole 1 and described second between hole 2, it is described
The lower section of hole 2 reinforces corner using lock foot anchor tube 7 in second；
C. refer to Fig. 3, be segmented partial dismantling described in temporary support 9, apply waterproof layer, pour middle part top plate 10, bottom plate 11,
12 concrete structure of center pillar, more preferably, before end bay excavation, adds vertical interim I-steel branch between top plate 10 and bottom plate 11
Support；
D. Fig. 4 is referred to, the vault in the first side hole 3 is reinforced using super-front large pipe shed supporting and grouting with small pipe 5 and both sides are encircleed
While and super-front large pipe shed supporting when removing middle hole portion both sides arch and grouting with small pipe 5, hole 1 opposite two in described first
Side excavates the first side hole 3 and preliminary bracing 6 is applied to the hole in first side hole 3 top and outside hole side respectively, and described the
The lower section of side hole 3 adds temporary support 9, removes in described first the lock foot steel pipe 7 of the lower section of hole 1 and outside first side hole 3
Side, which uses, locks the reinforcing of foot anchor tube 7 corner, remaining core soil in advance 8 in first side hole, 3 digging process；
E. Fig. 5 is referred to, 2 opposite sides of hole excavates the second side hole 4 and applies the hole bottom in second side hole 4 in described second
And the preliminary bracing 6 on opposite exterior lateral sides hole side, push up the hole in hole in described first, the hole in first side hole top and outside hole side,
Cyclization is closed in the preliminary bracing 6 at the hole bottom in hole, the hole bottom in second side hole and outside hole side in described second, carries out branch at initial stage
Protect 6 back-groutings；
F. Fig. 6 is referred to, segmentation removes preliminary bracing 6 and the lock foot anchor tube 7 on 2 both sides hole side of hole in described second, applies bottom
Plate 11 and side wall waterproof layer, pour two lining structure of bottom plate 11 and side wall；
G. Fig. 7 is referred to, removes the temporary support 9 below the hole of first side, removes 1 both sides hole side of hole in described first
Preliminary bracing 6 and temporary support 9, apply remaining structure waterproof layer and two lining structures, two lining closing cyclization, are returned after carrying out two backings
Fill in slurry.
The present invention is described in detail above in association with attached drawing, those skilled in the art can be according to the above description
Many variations example is made to the present invention.Thus, some details in embodiment should not form limitation of the invention, and the present invention will
Protection scope of the present invention is used as using the scope that the appended claims define.
Claims (8)
- A kind of 1. method that flat top wall boring construction is carried out using central drift method, it is characterised in that constructing structure includes middle hole Portion and the side hole portion for being formed in the middle hole portion opposite sides, the described method comprises the following steps：A. excavate hole in first and hole top and both sides hole side to hole in described first apply preliminary bracing；B. hole and the hole bottom in hole in described second and the initial stage on both sides hole side are applied in excavating second below hole in described first Supporting, sets temporary support in described first in hole and described second between hole；C. temporary support described in being segmented partial dismantling, applies waterproof layer, pours middle part top plate, bottom plate and center pillar concrete structure；D. hole opposite sides excavates the first side hole and applies the hole top and opposite exterior lateral sides hole in first side hole in described first The preliminary bracing on side, temporary support is added below the hole of first side；E. hole opposite sides excavates the second side hole in described second, and applies the hole bottom and opposite exterior lateral sides hole in second side hole The preliminary bracing on side, pushes up the hole in hole in described first, hole in the hole in first side hole top and outside hole side, described second The preliminary bracing closing cyclization at hole bottom, the hole bottom in second side hole and outside hole side, carries out preliminary bracing back-grouting；F. the preliminary bracing of the second Zhong Dong both sides is removed in segmentation, is applied bottom plate and side wall waterproof layer, is poured bottom plate and side wall Two lining structures；G. the preliminary bracing of the first Zhong Dong both sides and remaining temporary support are removed, applies remaining structure waterproof layer and two lining knots Structure, two lining closing cyclization, slip casting is backfilled after carrying out two backings.
- 2. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that： Super-front large pipe shed supporting is carried out in described first before wide open digging and grouting with small pipe reinforces the middle hole portion vault and both sides arch side.
- 3. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that： Vertical interim I-shaped bracing members are added between the top plate and the bottom plate.
- 4. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that： Super-front large pipe shed supporting is carried out before the wide open digging in first side and grouting with small pipe reinforces first side hole vault and outside arch Side.
- 5. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that：Institute Remaining core soil in advance during hole, the wide open digging in the first side in stating first.
- 6. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that：Institute State during described first is additionally included in a steps and corner is reinforced using lock foot anchor tube below hole.
- 7. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that：Institute State during described second is additionally included in b step and corner is reinforced using lock foot anchor tube below hole.
- 8. the method according to claim 1 that flat top wall boring construction is carried out using central drift method, it is characterised in that：Institute State to be additionally included in Step d on the outside of the hole of first side and corner is reinforced using lock foot anchor tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058053.9A CN107905798A (en) | 2017-11-01 | 2017-11-01 | The method that flat top wall boring construction is carried out using central drift method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058053.9A CN107905798A (en) | 2017-11-01 | 2017-11-01 | The method that flat top wall boring construction is carried out using central drift method |
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| Publication Number | Publication Date |
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| CN107905798A true CN107905798A (en) | 2018-04-13 |
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| CN201711058053.9A Pending CN107905798A (en) | 2017-11-01 | 2017-11-01 | The method that flat top wall boring construction is carried out using central drift method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462118A (en) * | 2017-08-28 | 2017-12-12 | 武汉理工大学 | Large cross-section tunnel circulates development blasting method |
| CN109139060A (en) * | 2018-11-01 | 2019-01-04 | 鞍山三冶建筑工程有限公司 | A kind of piping lane boring construction support construction and construction method |
| CN110735449A (en) * | 2019-10-29 | 2020-01-31 | 中国十七冶集团有限公司 | bottom-penetrating type large-section pipe gallery shrinkage method construction method |
| CN112065451A (en) * | 2020-09-14 | 2020-12-11 | 中国建筑第八工程局有限公司 | Underground passage underground excavation method with lining first and primary support second |
| CN112709605A (en) * | 2020-12-29 | 2021-04-27 | 中国电建集团中南勘测设计研究院有限公司 | Seepage control construction method for underground water seal cave depot |
| CN115478564A (en) * | 2022-09-21 | 2022-12-16 | 中国建筑第八工程局有限公司 | Method for opening door opening of diaphragm wall |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696055U (en) * | 2010-06-21 | 2011-01-05 | 福建省信通工程建设有限公司 | Multi-span flat arch tunnel structure |
| KR20130048883A (en) * | 2011-11-03 | 2013-05-13 | (주)한국투아치 | Construction method for 2arch tunnel using shotcrete way |
| CN104832181A (en) * | 2015-05-14 | 2015-08-12 | 中铁十九局集团第一工程有限公司 | Dovetail section tunnel construction process |
| CN106368711A (en) * | 2016-10-12 | 2017-02-01 | 中建局集团第六建筑有限公司 | Ultra-shallow-buried rectangular large section four-step underground excavation construction method |
-
2017
- 2017-11-01 CN CN201711058053.9A patent/CN107905798A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696055U (en) * | 2010-06-21 | 2011-01-05 | 福建省信通工程建设有限公司 | Multi-span flat arch tunnel structure |
| KR20130048883A (en) * | 2011-11-03 | 2013-05-13 | (주)한국투아치 | Construction method for 2arch tunnel using shotcrete way |
| CN104832181A (en) * | 2015-05-14 | 2015-08-12 | 中铁十九局集团第一工程有限公司 | Dovetail section tunnel construction process |
| CN106368711A (en) * | 2016-10-12 | 2017-02-01 | 中建局集团第六建筑有限公司 | Ultra-shallow-buried rectangular large section four-step underground excavation construction method |
Non-Patent Citations (3)
| Title |
|---|
| 张江龙等: "超浅覆土平顶直墙暗挖施工技术", 《现代隧道技术（增刊）》 * |
| 张素英: "超浅埋暗挖平顶直墙结构施工技术", 《工程质量》 * |
| 田海波: "大跨平顶直墙暗挖通道二次衬砌技术探析", 《隧道建设》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462118A (en) * | 2017-08-28 | 2017-12-12 | 武汉理工大学 | Large cross-section tunnel circulates development blasting method |
| CN109139060A (en) * | 2018-11-01 | 2019-01-04 | 鞍山三冶建筑工程有限公司 | A kind of piping lane boring construction support construction and construction method |
| CN110735449A (en) * | 2019-10-29 | 2020-01-31 | 中国十七冶集团有限公司 | bottom-penetrating type large-section pipe gallery shrinkage method construction method |
| CN110735449B (en) * | 2019-10-29 | 2021-04-13 | 中国十七冶集团有限公司 | Down-through type large-section pipe gallery reduction method construction method |
| CN112065451A (en) * | 2020-09-14 | 2020-12-11 | 中国建筑第八工程局有限公司 | Underground passage underground excavation method with lining first and primary support second |
| CN112709605A (en) * | 2020-12-29 | 2021-04-27 | 中国电建集团中南勘测设计研究院有限公司 | Seepage control construction method for underground water seal cave depot |
| CN115478564A (en) * | 2022-09-21 | 2022-12-16 | 中国建筑第八工程局有限公司 | Method for opening door opening of diaphragm wall |
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Application publication date: 20180413 |