CN110145348A - Long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard - Google Patents
Long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard Download PDFInfo
- Publication number
- CN110145348A CN110145348A CN201910368851.4A CN201910368851A CN110145348A CN 110145348 A CN110145348 A CN 110145348A CN 201910368851 A CN201910368851 A CN 201910368851A CN 110145348 A CN110145348 A CN 110145348A
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- slip casting
- exhaust pipe
- anchor
- europe superscript
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000005641 tunneling Effects 0.000 title claims abstract description 17
- 238000007569 slipcasting Methods 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 101100222092 Caenorhabditis elegans csp-3 gene Proteins 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to long system anchor bolt construction methods under a kind of Europe superscript New Austrian Tunneling Method standard, it includes the following steps: step 1: being drilled using two-arm hydraulic drill ring, then cleaned to drilling；Step 2: sliding platform is in place, to pore-forming inspection, while being stirred mortar；Step 3: rockbolt installation, wherein vault updip anchor pole, abutment wall have a down dip anchor pole；Step 4: vault updip anchor pole carries out binding exhaust pipe；Step 5: rockbolt installation, fixed operation are carried out using moveable platform vehicle；Step 6: insertion slip casting steel pipe, and aperture is blocked after being soaked with brown paper；Step 7: slip casting is extracted Grouting Pipe out after the completion of slip casting, is inserted into next bolthole, blocks aperture and slip casting again, has a down dip anchor pole to abutment wall, the body of rod is inserted into after slip casting；Step 8: withdrawal resistance and the detection of slip casting plumpness, anchor pole final acceptance of construction.The present invention has the advantages that hole quality is high, for bolthole away from ± 2cm is can be controlled in, hole location deviation is controllable；Rockbolt installation anti-pulling is strong, anchors.
Description
Technical field
The present invention relates to Modelling of Tunnel Excavation in Soft Rock field, long system anchor bolt is applied under specifically a kind of Europe superscript New Austrian Tunneling Method standard
Work method.
Background technique
In Modelling of Tunnel Excavation in Soft Rock, long anchor pole can change the mechanical characteristic of country rock, improve the self-bearing ability of country rock,
Surrouding rock deformation is reduced, the stability of tunnel surrounding is kept.For Support System in Soft Rock Tunnels, the reinforcing of country rock is imitated in the setting of long anchor pole
Fruit is arranged better than common bolt.In the large deformation tunnel of the complex conditions such as country rock soft broken, high-ground stress, long anchor is used
Bar is control high stress, the effective way of large-deformation tunnel in soft rock.
Since design rock-bolt length has the different lengths such as 4.5 meters, 6 meters, 9 meters, 15 meters, traditional, pneumatic rock drill is imitated from construction
Construction demand is can not meet in rate to quality standard, therefore, it is necessary to study long system anchor bolt under a kind of Europe superscript New Austrian Tunneling Method standard
Construction method, to meet construction technology, reduce artificial drilling labor intensity, improve operating environment and give full play to mechanical efficiency
Purpose.
Summary of the invention
The present invention is in order to improve construction technology, reduce artificial drilling labor intensity, improve operating environment and give full play to machine
Tool efficiency provides long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard.
In order to solve the above technical problems, technical solution provided by the invention are as follows: long system under a kind of Europe superscript New Austrian Tunneling Method standard
Anchor rod construction method, it includes the following steps:
Step 1: being drilled using two-arm hydraulic drill ring, is then cleaned to drilling；
Step 2: sliding platform is in place, to pore-forming inspection, while being stirred mortar；
Step 3: rockbolt installation, wherein vault updip anchor pole, abutment wall have a down dip anchor pole；
Step 4: vault updip anchor pole carries out binding exhaust pipe；
Step 5: rockbolt installation, fixed operation are carried out using moveable platform vehicle；
Step 6: insertion slip casting steel pipe, and aperture is blocked after being soaked with brown paper；
Step 7: slip casting is extracted Grouting Pipe out after the completion of slip casting, is inserted into next bolthole, blocks aperture and slip casting again,
It has a down dip anchor pole to abutment wall, the body of rod is inserted into after slip casting；
Step 8: withdrawal resistance and the detection of slip casting plumpness, anchor pole final acceptance of construction.
As an improvement, the rock generated in the step one in drilling is cut and is discharged using high pressure water, until aperture is flowed
Out until clear water.
As an improvement, anchor pole uses the II grade screw-thread steel processing and fabricating qualified through sampling observation, spiral shell used in the step three
Line steel such as is manually derusted, is desilted, being degreased at the processing, according to design length, is cut using bar cutter.
As an improvement, exhaust pipe uses in the step fourPlastic flexible pipe production is to guarantee that it allows part few
Quantitative change shape cuts exhaust pipe at slightly longer than 10~20cm of anchor pole, and will be substantially concordant with anchor pole top at the top of exhaust pipe but slightly lower 3
~5cm is failed with guaranteeing not pushed against by eyeground palisades at the top of exhaust pipe, presses 0.5m spacing for exhaust pipe using common electric adhesive plaster
Binding in exhaust pipe two sides adds spile or other hard objects to prevent plastic tube quilt completely when being sent on anchor pole
Card guarantees that smooth gas discharge, exhaust pipe insert in the hole with anchor pole, and tail end exposes 10~20cm of bolthole aperture.
As an improvement, the anchor pole for having bound exhaust pipe is carefully inserted when applying arch updip anchor pole in the step five
Enter in hole, then anchor hole mouth is symmetrically squeezed into using two pieces of timber wedges, by the frictional force in timber wedge and aperture come fixing anchor bar.
As an improvement, the mortar used in the step seven is high-early (strength) cement mortar, the selection of material is portland cement
Or ordinary portland cement, marked as 42.5R, water-reducing agent TKKcementolhiperplast185, swelling agent is
TKKcenmentolinjektinF3, water use common mixing water, and cement can be used in Stock allotment right: water: sand: early strength agent is
1:0.45:1.62:0.007, wherein every side's cement consumption 684kg, water consumption 308kg, sand dosage 1108kg, CSP-3 early strength agent
Dosage 4.8kg.
The present invention has the advantages that this engineering method is suitable for American-European New Austrian Tunneling Method tunneling, country rock soft broken, high-ground stress
The tunnel anchor bolt construction of the different length in the equal bad area of geological conditions, long anchor rod anchored construction technology give full play to anchor pole work
With because the rock of loosening caused by tunnel excavation is connected in the complete solid rock outside relaxation zone, while utilizing the drawing of anchor pole
Stratified rock is combined to form combination beam and carries out supporting by power, makes rock mass homeostasis；Deformation observation reaches small in 1 month
After 4mm, start Second Lining Construction；Speed of application is fast, and armature boring efficiency can achieve 2m/min, and longest construction anchor pole is long
It spends up to 20m, the anchor pole that the common air drill that can construct can not construct；Mechanization degree is high, and operator is less, operator's labour
Intensity is low；Mechanized construction hole quality is high, and bolthole is can be controlled in away from ± 2cm, hole location deviation is can be controlled in no more than 1cm；
Rockbolt installation work efficiency is high, at low cost, and anti-pulling is strong, anchors；Operating environment is preferable, work progress safety.
Detailed description of the invention
Fig. 1 is the anchor rod construction process process of long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard of the present invention
Figure.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
In conjunction with attached drawing 1, long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard, it includes the following steps:
Step 1: being drilled using two-arm hydraulic drill ring, is then cleaned to drilling；
Step 2: sliding platform is in place, to pore-forming inspection, while being stirred mortar；
Step 3: rockbolt installation, wherein vault updip anchor pole, abutment wall have a down dip anchor pole；
Step 4: vault updip anchor pole carries out binding exhaust pipe；
Step 5: rockbolt installation, fixed operation are carried out using moveable platform vehicle；
Step 6: insertion slip casting steel pipe, and aperture is blocked after being soaked with brown paper；
Step 7: slip casting is extracted Grouting Pipe out after the completion of slip casting, is inserted into next bolthole, blocks aperture and slip casting again,
It has a down dip anchor pole to abutment wall, the body of rod is inserted into after slip casting；
Step 8: withdrawal resistance and the detection of slip casting plumpness, anchor pole final acceptance of construction.
The rock generated in the step one in drilling is cut to be discharged using high pressure water, until aperture outflow clear water is
Only.
Anchor pole uses the II grade screw-thread steel processing and fabricating qualified through sampling observation in the step three, and screw-thread steel used carries out people
Work such as derusts, desilts, degreasing at the processing, according to design length, is cut using bar cutter.
Exhaust pipe uses in the step fourPlastic flexible pipe production, will to guarantee that it allows a small amount of deformation in part
Exhaust pipe is cut into slightly longer than 10~20cm of anchor pole, and by 3~5cm substantially concordant but slightly lower with anchor pole top at the top of exhaust pipe, with
Guarantee not pushed against and fail by eyeground palisades at the top of exhaust pipe, is bound exhaust pipe in anchor by 0.5m spacing using common electric adhesive plaster
On bar, while spile or other hard objects are added to prevent plastic tube from, completely by card, guaranteeing row when being sent into exhaust pipe two sides
Gas is unobstructed, and exhaust pipe inserts in the hole with anchor pole, and tail end exposes 10~20cm of bolthole aperture.
When applying arch updip anchor pole in the step five, the anchor pole for having bound exhaust pipe is carefully inserted in the hole, so
Anchor hole mouth is symmetrically squeezed into using two pieces of timber wedges afterwards, by the frictional force in timber wedge and aperture come fixing anchor bar.
For the mortar used in the step seven for high-early (strength) cement mortar, the selection of material is portland cement or common silicic acid
Salt cement, marked as 42.5R, water-reducing agent TKKcementolhiperplast185, swelling agent is
TKKcenmentolinjektinF3, water use common mixing water, and cement can be used in Stock allotment right: water: sand: early strength agent is
1:0.45:1.62:0.007, wherein every side's cement consumption 684kg, water consumption 308kg, sand dosage 1108kg, CSP-3 early strength agent
Dosage 4.8kg.
The working principle of the invention: the length according to construction anchor pole is different, and slightly different for construction technology, in tunnel,
It for the anchor pole of 6m (containing) following length, is first drilled using jumbolter, anchor pole is finally installed in then slip casting；For 6m or more
The anchor pole of length can not install whole elongated anchor pole, then be applied by the way of spreading anchor pole by being limited by tunnel space
Work, jumbolter are drilled using anchor pole itself as drilling rod, continuous spreading anchor pole, until arriving design length, drilling is completed, anchor
Bar is also just installed, and finally carries out slip casting.
To the anchor pole that has a down dip using traditional single-pipe grouting technique, insertion Grouting Pipe to bottom hole does not set exhaust pipe, and marginal not starches side
It extracts slip casting in Grouting Pipe to hole out to complete, it is fixed to be inserted into anchor pole.Anchoring to updip or vertical anchor pole, using two-tube note
Sizing process, realization have pressure grouting, and mortar under pressure, from bottom to top fills up the gap between anchor pole and anchor pole hole wall, together
When penetrate into the joint fissure of country rock, strengthen the frictional force of anchor pole and country rock, meanwhile, the air in anchor hole is by exhaust pipe
Discharge shows that slip casting is full in hole when slurry until exhaust pipe overflows.
The present invention and its embodiments have been described above, this description is no restricted, shown in the drawings
Only one of step embodiment of the invention, practical step is not limited thereto.All in all if this field it is common
Technical staff is enlightened by it, without departing from the spirit of the invention, is not inventively designed and the technical side
The similar frame mode of case and embodiment, are within the scope of protection of the invention.
Claims (6)
1. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard, it is characterised in that: it includes the following steps:
Step 1: being drilled using two-arm hydraulic drill ring, is then cleaned to drilling；
Step 2: sliding platform is in place, to pore-forming inspection, while being stirred mortar；
Step 3: rockbolt installation, wherein vault updip anchor pole, abutment wall have a down dip anchor pole；
Step 4: vault updip anchor pole carries out binding exhaust pipe；
Step 5: rockbolt installation, fixed operation are carried out using moveable platform vehicle；
Step 6: insertion slip casting steel pipe, and aperture is blocked after being soaked with brown paper；
Step 7: slip casting is extracted Grouting Pipe out after the completion of slip casting, is inserted into next bolthole, blocks aperture and slip casting, opposite side again
Wall has a down dip anchor pole, and the body of rod is inserted into after slip casting；
Step 8: withdrawal resistance and the detection of slip casting plumpness, anchor pole final acceptance of construction.
2. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard according to claim 1, it is characterised in that: institute
The rock generated in the step of stating one in drilling is cut to be discharged using high pressure water, until clear water is flowed out in aperture.
3. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard according to claim 1, it is characterised in that: institute
Anchor pole uses the II grade screw-thread steel processing and fabricating qualified through sampling observation in the step of stating three, and screw-thread steel used is manually derusted, removed
Mud, the processing such as degrease, and according to design length, is cut using bar cutter.
4. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard according to claim 1, it is characterised in that: institute
Exhaust pipe uses in the step of stating fourPlastic flexible pipe production is cut exhaust pipe with guaranteeing that it allows a small amount of deformation in part
At slightly longer than 10~20cm of anchor pole, and by 3~5cm substantially concordant but slightly lower with anchor pole top at the top of exhaust pipe, to guarantee exhaust pipe
Top is not pushed against by eyeground palisades and is failed, and is bound exhaust pipe on anchor pole by 0.5m spacing using common electric adhesive plaster, simultaneously
Spile or other hard objects are added in exhaust pipe two sides to prevent plastic tube from, completely by card, guaranteeing smooth gas discharge, row when being sent into
Tracheae inserts in the hole with anchor pole, and tail end exposes 10~20cm of bolthole aperture.
5. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard according to claim 1, it is characterised in that: institute
When applying arch updip anchor pole in the step of stating five, the anchor pole for having bound exhaust pipe is carefully inserted in the hole, then uses two pieces
Timber wedge symmetrically squeezes into anchor hole mouth, by the frictional force in timber wedge and aperture come fixing anchor bar.
6. long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard according to claim 1, it is characterised in that: institute
For the mortar used in the step of stating seven for high-early (strength) cement mortar, the selection of material is portland cement or ordinary portland cement, mark
Number be 42.5R, water-reducing agent be TKK cementol hiperplast 185, swelling agent be TKK cenmentol injektin
F3, water use common mixing water, and cement can be used in Stock allotment right: water: sand: early strength agent 1:0.45:1.62:0.007,
In every side's cement consumption 684kg, water consumption 308kg, sand dosage 1108kg, CSP-3 early strength agent dosage 4.8kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910368851.4A CN110145348A (en) | 2019-05-05 | 2019-05-05 | Long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910368851.4A CN110145348A (en) | 2019-05-05 | 2019-05-05 | Long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110145348A true CN110145348A (en) | 2019-08-20 |
Family
ID=67594087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910368851.4A Pending CN110145348A (en) | 2019-05-05 | 2019-05-05 | Long system anchor bolt construction method under a kind of Europe superscript New Austrian Tunneling Method standard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561944A (en) * | 2022-03-19 | 2022-05-31 | 中电建十一局工程有限公司 | Construction method of elevation angle mortar anchor rod |
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|---|---|---|---|---|
| CN202381110U (en) * | 2011-10-27 | 2012-08-15 | 彭康 | Long anchor rod pre-supporting device applied in unstable stope roof |
| CN104692736A (en) * | 2013-12-10 | 2015-06-10 | 五冶集团上海有限公司 | Anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material and construction method thereof |
| CN106194203A (en) * | 2016-08-26 | 2016-12-07 | 百色百矿集团有限公司 | A kind of coal-mine soft-rock method for protecting support |
| CN109611135A (en) * | 2018-12-05 | 2019-04-12 | 贵州大学 | A kind of Novel hollow cross grouting anchor rod device and application method |
-
2019
- 2019-05-05 CN CN201910368851.4A patent/CN110145348A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202381110U (en) * | 2011-10-27 | 2012-08-15 | 彭康 | Long anchor rod pre-supporting device applied in unstable stope roof |
| CN104692736A (en) * | 2013-12-10 | 2015-06-10 | 五冶集团上海有限公司 | Anti-cracking large-size early-strength, high-strength and micro-expansion M grouting material and construction method thereof |
| CN106194203A (en) * | 2016-08-26 | 2016-12-07 | 百色百矿集团有限公司 | A kind of coal-mine soft-rock method for protecting support |
| CN109611135A (en) * | 2018-12-05 | 2019-04-12 | 贵州大学 | A kind of Novel hollow cross grouting anchor rod device and application method |
Non-Patent Citations (2)
| Title |
|---|
| 潘建立: "岩锚梁施工新技术", 《现代隧道技术》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561944A (en) * | 2022-03-19 | 2022-05-31 | 中电建十一局工程有限公司 | Construction method of elevation angle mortar anchor rod |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190820 |
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