CN101768965A - Process for casting by using self-advancing anchor rod - Google Patents
Process for casting by using self-advancing anchor rod Download PDFInfo
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- CN101768965A CN101768965A CN201010019484A CN201010019484A CN101768965A CN 101768965 A CN101768965 A CN 101768965A CN 201010019484 A CN201010019484 A CN 201010019484A CN 201010019484 A CN201010019484 A CN 201010019484A CN 101768965 A CN101768965 A CN 101768965A
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- self
- casting
- slip casting
- anchor rod
- construction
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Abstract
The invention discloses a process for casting by using a self-advancing anchor rod. The process comprises the following steps of: A) assembling a hollow casting anchor rod on a drilling machine by using a borer connector, B) starting the drilling machine to drill on an appointed construction plant by rotating hollow casting anchor rod, and C) after finishing drilling, casting pure cement slurry or cement plaster in the hole by using the hollow casting anchor rod, wherein in the step A), if the soil of the construction plant is common rock, an air rock drill can be chosen to use and if the soil of the construction plant is hard rock, a propelling drill having a guide rail can be chosen to use. The casting can be immediately performed after the hole is formed by using the method of casting by using a self-advancing anchor rod, so the processes are decreased, the hole forming rate is promoted and the work efficiency is greatly increased.
Description
Technical field
The present invention relates to the construction technology of anchor bolt grouting in a kind of subgrade construction, specifically is a kind of construction technology that is applied to the self-feeding anchor pile slip casting of bad ground anchoring.
Background technology
In the roadbed engineering, when carrying out anchoring, be difficult to the stratum of pore-forming, adopt and holes with rig earlier for weathered rock formation, backfill layer, sandy gravel stratum and circle cobble, silt particle horsestone etc. on the stratum, insert the mode that grouted anchor bar carries out slip casting again, tend in the construction to occur the to collapse situation of hole or bit freezing, it becomes porosity lower, if grouted anchor bar is before patchhole, the hole that collapses just appears, can't be with in the grouted anchor bar patchhole, thus the amount of labour not only increased, but also influenced construction speed.
Summary of the invention
The object of the present invention is to provide a kind of one-tenth porosity height, the construction technology of the self-feeding anchor pile slip casting that efficiency of construction is high.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the construction technology of self-feeding anchor pile slip casting, and its construction technology may further comprise the steps: A, utilize the bit shank connector that hollow grouting anchor is installed on the rig; B, unlatching rig utilize the hollow grouting anchor that rotates to hole in the construction plant of appointment; After C, boring are finished, with neat slurry or cement mortar by hollow grouting anchor slip casting in the hole.
Among the described step C, the particle diameter of the sand that uses in the described cement mortar is not more than 1.0mm, the mud content of sand by weight must not be greater than 3%, content of harmful such as mica, organic matter, fluidisation thing and sulfate are by weight very much not in 1% in the sand, and the weight ratio of sand and cement is 1: 1～1: 3.
Among the described step C, the water/binder ratio of neat slurry is 0.4～0.5.
In the described steps A, when being general ground matter, can select air rock drill for use for the soil property of construction plant; When the soil property of construction plant is the hard rock stratum, can select the propelling rig of guide rail for use.
Beneficial effect of the present invention is: owing to adopt the mode of the hollow grouting anchor slip casting of self-advancing type, slip casting immediately behind the pore-forming has promptly reduced operation, has improved the one-tenth porosity again, so improved operating efficiency greatly.
The specific embodiment:
The construction technology of self-feeding anchor pile slip casting, its construction technology may further comprise the steps: A, utilize the bit shank connector that hollow grouting anchor is installed on the rig; B, unlatching rig utilize the hollow grouting anchor that rotates to hole in the construction plant of appointment; After C, boring are finished, with neat slurry or cement mortar by hollow grouting anchor slip casting in the hole.
Among the described step C, the particle diameter of the sand that uses in the described cement mortar is not more than 1.0mm, the mud content of sand by weight must not be greater than 3%, and content of harmful such as mica, organic matter, fluidisation thing and sulfate are by weight very much not in 1% in the sand, and the weight ratio of sand and cement is 1: 3.If when using cement mortar, can only be used for once grouting.Slurries must not deposit above 120 minutes, and slurries should be put in the container that can slowly mix, generally adopt twin-tub mixer or self-loopa mixer.The optimum water/binder ratio of cement paste is 0.45.
In the described steps A, the soil property of construction plant is general ground matter, so select air rock drill for use, this hammer drill can be used pneumatic propelling, and simple to operate flexible, major defect is its less stable.
Claims (4)
1. the construction technology of a self-feeding anchor pile slip casting, it is characterized in that: its construction technology may further comprise the steps: A, utilize the bit shank connector that hollow grouting anchor is installed on the rig; B, unlatching rig utilize the hollow grouting anchor that rotates to hole in the construction plant of appointment; After C, boring are finished, with neat slurry or cement mortar by hollow grouting anchor slip casting in the hole.
2. the construction technology of self-feeding anchor pile slip casting according to claim 1, it is characterized in that: among the described step C, the particle diameter of the sand that uses in the described cement mortar is not more than 1.0mm, the mud content of sand by weight must not be greater than 3%, content of harmful such as mica, organic matter, fluidisation thing and sulfate are by weight very much not in 1% in the sand, and the weight ratio of sand and cement is 1: 1～1: 3.
3. the construction technology of self-feeding anchor pile slip casting according to claim 1 is characterized in that: among the described step C, the water/binder ratio of neat slurry is 0.4～0.5.
4. the construction technology of self-feeding anchor pile slip casting according to claim 1 is characterized in that: in the described steps A, when being general ground matter for the soil property of construction plant, can select air rock drill for use; When the soil property of construction plant is the hard rock stratum, can select the propelling rig of guide rail for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019484A CN101768965A (en) | 2010-01-19 | 2010-01-19 | Process for casting by using self-advancing anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019484A CN101768965A (en) | 2010-01-19 | 2010-01-19 | Process for casting by using self-advancing anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101768965A true CN101768965A (en) | 2010-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010019484A Pending CN101768965A (en) | 2010-01-19 | 2010-01-19 | Process for casting by using self-advancing anchor rod |
Country Status (1)
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| CN (1) | CN101768965A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296974A (en) * | 2011-07-12 | 2011-12-28 | 山东科技大学 | Rapid maintaining method for broken roof in stope |
| CN102797491A (en) * | 2012-08-04 | 2012-11-28 | 河南理工大学 | System and method for monitoring dynamic disaster of coal mine with fiber bragg gratings |
| CN108517877A (en) * | 2018-04-24 | 2018-09-11 | 青岛新华友建工集团股份有限公司 | Miscellaneous fill ultra-deep foundation pit consolidates slip casting combination double-row steel pipe stake supporting construction method |
-
2010
- 2010-01-19 CN CN201010019484A patent/CN101768965A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296974A (en) * | 2011-07-12 | 2011-12-28 | 山东科技大学 | Rapid maintaining method for broken roof in stope |
| CN102296974B (en) * | 2011-07-12 | 2013-10-23 | 山东科技大学 | Rapid maintaining method for broken roof in stope |
| CN102797491A (en) * | 2012-08-04 | 2012-11-28 | 河南理工大学 | System and method for monitoring dynamic disaster of coal mine with fiber bragg gratings |
| CN108517877A (en) * | 2018-04-24 | 2018-09-11 | 青岛新华友建工集团股份有限公司 | Miscellaneous fill ultra-deep foundation pit consolidates slip casting combination double-row steel pipe stake supporting construction method |
| CN108517877B (en) * | 2018-04-24 | 2020-08-14 | 青岛新华友建工集团股份有限公司 | Supporting construction method combining consolidation grouting of hybrid filling ultra-deep foundation pit with double-row steel pipe piles |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100707 |