CN108386198A - A kind of novel tunnel inverted arch basement weak country rock processing method - Google Patents
A kind of novel tunnel inverted arch basement weak country rock processing method Download PDFInfo
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- CN108386198A CN108386198A CN201810101090.1A CN201810101090A CN108386198A CN 108386198 A CN108386198 A CN 108386198A CN 201810101090 A CN201810101090 A CN 201810101090A CN 108386198 A CN108386198 A CN 108386198A
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- inverted arch
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- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000007569 slipcasting Methods 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 14
- 239000011083 cement mortar Substances 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000009412 basement excavation Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007363 ring formation reaction Methods 0.000 description 2
- 241001149930 Protura <class> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- 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
-
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of novel tunnel inverted arch basement weak country rock processing methods, belong to construction engineering technical field, the specific steps are：1）The excavation of tunnel inverted arch and leveling：Tunnel inverted arch according to design drawing size excavate simultaneously artificial smooth；2）Inverted arch preliminary bracing；3）Drilling：It is vertically drilled using hand air drill on inverted arch preliminary bracing face, and installs Φ 50mm steel pipes, spacing 1m, quincunx laying bores injected hole in the tube wall four of steel pipe, laying that injected hole is quincunx；4）Slip casting：Steel pipe using cement mortar carries out slip casting after the completion of setting, and when inverted arch substrate underground water is larger, using cement-silicate slurries slip casting, when construction, when every hole grouting pressure reaches design grouting pressure, terminates slip casting；5）After the completion of the construction of steel pipe cement mortar, normal construction inverted arch and inverted arch is required to fill according to design drawing.The present invention reduces the influence of weak surrounding rock foundation settlement as far as possible, it is ensured that tunnel agent structure, construction quality and tunnel operation security.
Description
Technical field
The invention belongs to construction engineering technical fields, specifically, being related to a kind of novel tunnel inverted arch basement weak country rock
Processing method.
Background technology
Currently, Weak Surrounding Rock Construction only payes attention to the selection of tunnel excavation engineering method and tunnel main body supporting parameter in tunnel, face upward
The weak surrounding rock processing of skewback bottom does not attract great attention, and weak surrounding rock is under outer load action, and sedimentation is big, and the duration
It is long.Tunnel Engineering is built on weak surrounding rock, potential settlement after construction can cause communications and transportation and tunnel agent structure very big
Harm, therefore soft foundation should take reasonable effective Reinforcement Measures.The mode of Soft Ground has very much, respectively
There are advantage and disadvantage and limitation, rational foundation treatment mode how to be selected to be directly related to construction quality, project progress and engineering
Investment.
Invention content
In order to solve the problems, such as background technology, the present invention provides a kind of novel tunnel inverted arch basement weak country rocks
Processing method, to realize the influence for reducing weak surrounding rock foundation settlement, it is ensured that tunnel agent structure, construction quality and tunnel operation
Safety.
To achieve the above object, the present invention is achieved through the following technical solutions：
A kind of novel tunnel inverted arch basement weak country rock processing method, the specific steps are：
1）The excavation of tunnel inverted arch and leveling
Tunnel inverted arch according to design drawing size excavate simultaneously artificial smooth；
2）Inverted arch preliminary bracing
After using concrete to spray 4cm to inverted arch substrate element first, I22 I-steel is installed in the inverted arch substrate of gunite concrete,
Spacing is 0.6m between two neighboring I22 I-steel, and distributing reinforcement, Φ are laid using 25 spirals of Φ and the welding of I22 I-steel
Spacing between 25 spirals is 1m, and steel arch-shelf is connected as entirety, finally sprays C25 concrete again to design thickness；
3）Drilling
It is vertically drilled using hand air drill on inverted arch preliminary bracing face, and installs Φ 50mm steel pipes, Φ 50mm steel pipe plum blossoms
Shape is laid, and the tube wall surrounding of spacing 1m, Φ 50mm steel pipes bores injected hole, laying that injected hole is quincunx, pitch of holes 15cm；
4）Slip casting
Φ 50mm steel pipes using cement mortar carry out slip casting after the completion of setting, when construction, when every hole grouting pressure reaches design slip casting
When pressure, grouting pressure 0.5-1.0MPa terminates slip casting；
5）After the completion of the construction of steel pipe cement mortar, normal construction inverted arch and inverted arch is required to fill according to design drawing.
Preferably, step 3）In, Φ 50mm length of steel pipe is 4.5m, wall thickness 3.5mm, is enclosed for ease of conduit insertion
Rock, front end set a length of 10cm pointed cones head, and the tail portion 1m of steel pipe does not set injected hole.
Preferably, step 4）In, the weight ratio of water and cement is 1 in cement grout:1, cement grade 425；Using
When cement-water-clay system slip casting, cement mortar is 1 with waterglass volume ratio:0.5, waterglass Baume degrees is 30, modulus 2.4,
Grouting pressure 0.5-1.0MPa.
Beneficial effects of the present invention：
After inverted arch closing cyclization, drill on inverted arch preliminary bracing face, and the steel that injected hole is drilled on its tube wall is installed in hole
Pipe, then reinforces weak surrounding rock to inverted arch substrate slip casting by steel pipe, reduces weak surrounding rock foundation settlement as far as possible
It influences, it is ensured that tunnel agent structure, construction quality and tunnel operation security；Meanwhile this method directly utilizes constructing tunnel existing
The reinforcing of inverted arch basement weak country rock can be realized in equipment, less using equipment, material, safe operation, simple, conveniently, not shadow
Tunnel normal construction is rung, speed is fast.
Description of the drawings
Fig. 1 is that inverted arch basement weak country rock handles cross-sectional view；
Fig. 2 is that inverted arch basement weak country rock handles skiagraph；
Fig. 3 is 50 steel-tube construction schematic diagrames of Φ.
In figure, 50 steel pipes of 1- Φ, 2- soft bases, 3- weak surrounding rocks paragraph, the normal country rock paragraphs of 4-.
Specific implementation mode
Below in conjunction with the embodiment of the present invention and attached drawing, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Embodiment
A kind of novel tunnel inverted arch basement weak country rock processing method, the specific steps are：
1）The excavation of tunnel inverted arch and leveling
Tunnel inverted arch according to design drawing size excavate simultaneously artificial smooth；
2）Inverted arch preliminary bracing
After spraying 4cm to inverted arch substrate element using the concrete marked as C25 first, installed in the inverted arch substrate of gunite concrete
I22 I-steel, spacing is 0.6m between two neighboring I22 I-steel, is laid using 25 spirals of Φ and the welding of I22 I-steel
Distributing reinforcement, the spacing between 25 spirals of Φ is 1m, and steel arch-shelf is connected as entirety, finally again spray C25 concrete to designing thickness
Degree；
3）Drilling
It is vertically drilled using hand air drill on inverted arch preliminary bracing face, and installs Φ 50mm steel pipes 1,1 plum of Φ 50mm steel pipes
Flower-shape is laid, and the tube wall surrounding of spacing 1m, Φ 50mm steel pipes 1 bores injected hole, laying that injected hole is quincunx, and pitch of holes is
15cm；The length of Φ 50mm steel pipes 1 is 4.5m, wall thickness 3.5mm, is inserted into country rock for ease of conduit, front end sets a length of 10cm points
The tail portion 1m of conehead, steel pipe does not set injected hole；As shown in Figure 3；
4）Slip casting
Φ 50mm steel pipes using cement mortar carry out slip casting after the completion of setting, when construction, when every hole grouting pressure reaches design slip casting
When pressure, grouting pressure 0.5-1.0MPa terminates slip casting；The weight ratio of water and cement is 1 in cement grout:1, cement grade is
425；When using cement-water-clay system slip casting, cement mortar is 1 with waterglass volume ratio:0.5, waterglass Baume degrees is 30, mould
Number is 2.4, grouting pressure 0.5-1.0MPa；
5）After the completion of the construction of steel pipe cement mortar, normal construction inverted arch and inverted arch is required to fill according to design drawing.
The present invention is that the novel inverted arch basement weak country rock processing method for the treatment of of soft foundation is carried out after inverted arch closing cyclization, can
Constructing tunnel existing equipment is directly utilized, it is less using equipment, material, it is safe operation, simple, conveniently, it is normal that tunnel is not influenced
Construction, speed are fast.The application of the present invention for reducing the influence of weak surrounding rock foundation settlement as far as possible, it is ensured that tunnel main body knot
Structure, construction quality and tunnel operation security are of great significance.
Finally illustrating, preferred embodiment above and attached drawing are merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention has been described in detail by above preferred embodiment, however, those skilled in the art should understand that,
Various changes can be made to it in the form and details, without departing from model defined by claims of the present invention
It encloses.
Claims (3)
1. a kind of novel tunnel inverted arch basement weak country rock processing method, it is characterised in that：The specific steps are：
1）The excavation of tunnel inverted arch and leveling
Tunnel inverted arch according to design drawing size excavate simultaneously artificial smooth；
2）Inverted arch preliminary bracing
After using concrete to spray 4cm to inverted arch substrate element first, I22 I-steel is installed in the inverted arch substrate of gunite concrete,
Spacing is 0.6m between two neighboring I22 I-steel, and distributing reinforcement, Φ are laid using 25 spirals of Φ and the welding of I22 I-steel
Spacing between 25 spirals is 1m, and steel arch-shelf is connected as entirety, finally sprays C25 concrete again to design thickness；
3）Drilling
It is vertically drilled using hand air drill on inverted arch preliminary bracing face, and installs Φ 50mm steel pipes, Φ 50mm steel pipe plum blossoms
Shape is laid, and the tube wall surrounding of spacing 1m, Φ 50mm steel pipes bores injected hole, laying that injected hole is quincunx, pitch of holes 15cm；
4）Slip casting
Φ 50mm steel pipes using cement mortar carry out slip casting after the completion of setting, when construction, when every hole grouting pressure reaches design slip casting
When pressure, grouting pressure 0.5-1.0MPa terminates slip casting；
5）After the completion of the construction of steel pipe cement mortar, normal construction inverted arch and inverted arch is required to fill according to design drawing.
2. a kind of novel tunnel inverted arch basement weak country rock processing method according to claim 1, it is characterised in that：Step
3）In, Φ 50mm length of steel pipe is 4.5m, wall thickness 3.5mm, is inserted into country rock for ease of conduit, front end sets a length of 10cm pointed cones
The tail portion 1m of head, steel pipe does not set injected hole.
3. a kind of novel tunnel inverted arch basement weak country rock processing method according to claim 1, it is characterised in that：Step
4）In, the weight ratio of water and cement is 1 in cement grout:1, cement grade 425；When using cement-water-clay system slip casting,
Cement mortar is 1 with waterglass volume ratio:0.5, waterglass Baume degrees is 30, modulus 2.4, grouting pressure 0.5-1.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101090.1A CN108386198A (en) | 2018-02-01 | 2018-02-01 | A kind of novel tunnel inverted arch basement weak country rock processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101090.1A CN108386198A (en) | 2018-02-01 | 2018-02-01 | A kind of novel tunnel inverted arch basement weak country rock processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386198A true CN108386198A (en) | 2018-08-10 |
Family
ID=63074834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101090.1A Pending CN108386198A (en) | 2018-02-01 | 2018-02-01 | A kind of novel tunnel inverted arch basement weak country rock processing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108386198A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379571A (en) * | 2018-12-30 | 2020-07-07 | 中铁十四局集团有限公司 | Pipeline, pipe shed structure and pipe shed construction method with same |
| CN111810185A (en) * | 2020-06-30 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Tunnel bottom pre-reinforcement construction method |
| CN112127900A (en) * | 2020-09-07 | 2020-12-25 | 中国水利水电第十四工程局有限公司 | Construction method for hidden half-wall and half-arch protection structure of exposed arch of shallow-buried bias tunnel penetrating through accumulation body |
| JP2021110188A (en) * | 2020-01-14 | 2021-08-02 | 株式会社カテックス | Natural ground reinforcement method |
| CN116427451A (en) * | 2023-03-13 | 2023-07-14 | 中铁九局集团第三建设有限公司 | Micro pile reinforcement construction method for tunnel foundation under poor geological conditions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089275A (en) * | 2013-01-16 | 2013-05-08 | 山东大学 | Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections |
| CN103821536A (en) * | 2014-03-20 | 2014-05-28 | 中铁七局集团第三工程有限公司 | Construction method for tunnel on landslide section |
| CN104963696A (en) * | 2015-07-28 | 2015-10-07 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for arching tunnel bottom |
| CN105781571A (en) * | 2016-03-11 | 2016-07-20 | 中交第二公路工程局有限公司 | Construction method for soft rock deformation tunnel lining support dismantling-replacing arch |
| CN106351671A (en) * | 2016-10-17 | 2017-01-25 | 中铁五局集团第五工程有限责任公司 | Excavation and supporting structure for weak surrounding rock super-large cross-section tunnel and construction method thereof |
| CN107152282A (en) * | 2017-06-09 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | Steel pipe pile reinforced tunnel inverted arch soft soil foundation construction engineering method |
-
2018
- 2018-02-01 CN CN201810101090.1A patent/CN108386198A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089275A (en) * | 2013-01-16 | 2013-05-08 | 山东大学 | Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections |
| CN103821536A (en) * | 2014-03-20 | 2014-05-28 | 中铁七局集团第三工程有限公司 | Construction method for tunnel on landslide section |
| CN104963696A (en) * | 2015-07-28 | 2015-10-07 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for arching tunnel bottom |
| CN105781571A (en) * | 2016-03-11 | 2016-07-20 | 中交第二公路工程局有限公司 | Construction method for soft rock deformation tunnel lining support dismantling-replacing arch |
| CN106351671A (en) * | 2016-10-17 | 2017-01-25 | 中铁五局集团第五工程有限责任公司 | Excavation and supporting structure for weak surrounding rock super-large cross-section tunnel and construction method thereof |
| CN107152282A (en) * | 2017-06-09 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | Steel pipe pile reinforced tunnel inverted arch soft soil foundation construction engineering method |
Non-Patent Citations (1)
| Title |
|---|
| 李新荣: ""钢管桩加固隧道仰拱软弱地基施工技术"", 《建筑•建材•装饰》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379571A (en) * | 2018-12-30 | 2020-07-07 | 中铁十四局集团有限公司 | Pipeline, pipe shed structure and pipe shed construction method with same |
| JP2021110188A (en) * | 2020-01-14 | 2021-08-02 | 株式会社カテックス | Natural ground reinforcement method |
| JP7010312B2 (en) | 2020-01-14 | 2022-01-26 | 株式会社カテックス | Ground reinforcement method |
| CN111810185A (en) * | 2020-06-30 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Tunnel bottom pre-reinforcement construction method |
| CN111810185B (en) * | 2020-06-30 | 2022-04-05 | 中铁二院工程集团有限责任公司 | Tunnel bottom pre-reinforcement construction method |
| CN112127900A (en) * | 2020-09-07 | 2020-12-25 | 中国水利水电第十四工程局有限公司 | Construction method for hidden half-wall and half-arch protection structure of exposed arch of shallow-buried bias tunnel penetrating through accumulation body |
| CN112127900B (en) * | 2020-09-07 | 2022-07-05 | 中国水利水电第十四工程局有限公司 | Construction method for hidden half-wall and half-arch protection structure of exposed arch of shallow-buried bias tunnel penetrating through accumulation body |
| CN116427451A (en) * | 2023-03-13 | 2023-07-14 | 中铁九局集团第三建设有限公司 | Micro pile reinforcement construction method for tunnel foundation under poor geological conditions |
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Application publication date: 20180810 |