CN102644285A - Anti-collapse hole construction method for anchor drilling - Google Patents
Anti-collapse hole construction method for anchor drilling Download PDFInfo
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- CN102644285A CN102644285A CN2011100389054A CN201110038905A CN102644285A CN 102644285 A CN102644285 A CN 102644285A CN 2011100389054 A CN2011100389054 A CN 2011100389054A CN 201110038905 A CN201110038905 A CN 201110038905A CN 102644285 A CN102644285 A CN 102644285A
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- drilling rod
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Abstract
The invention discloses an anti-collapse hole construction method for anchor drilling, which is characterized by comprising the following steps: a, carrying out earth excavation on a foundation pit; b, carrying out topsoil cleaning and flattening on a side slope and carrying out setting-out on the side slope of the foundation pit; c, installing a drilling machine; d, drilling holes by using a section of coring bit, wherein the coring bit and a drill stem thereof are hollow, the diameter of the drill stem is 90-120 mm, and the length of the drill stem is 1.0-1.2 m; e, drilling holes by using a section of internally-installed bit arranged in the coring bit, wherein the internally-installed bit is a solid bit, and a drill stem thereof is hollow, and the diameter of the drill stem of the internally-installed bit is 5-8 mm shorter than the diameter of the drill stem of the coring bit, and the length of the drill stem of the internally-installed bit is 1.0-1.2 m; f, alternately repeating the steps d and e; g, cleaning the holes, and completely withdrawing the drill stem of the internally-installed bit; h, installing an anchor and a grouting tube; i, grouting and withdrawing the drill stem of the coring bit, wherein grouting is performed while the drill stem of the coring bit is withdrawn, and after each section of the drill stem of the coring bit is withdrawn, pressure filling and grouting are performed once; and j, completely withdrawing the drill stem of the coring bit, and carrying out pressure filling and grouting once.
Description
Technical field
The present invention relates to the job practices of the underground foundation pit stope support of a kind of construction work, specifically, is a kind of anchor cable anti-collapse hole construction method of holing.
Background technology
Slope anchorage is an operation that construction difficulty is bigger in deep-cutting foundation pit supporting project.The excavation slope anchor cable is to increase excavation slope antiskid frictional resistance, makes the excavation slope soil body reach a kind of measure of certain coefficient of stability.In the technological process of anchor cable boring, boring is one of critical process.In the boring procedure of known anchor cable boring method, if the more hole phenomenon of collapsing of just producing easily of the poor plasticity of soil property, soil property moisture content, and in case behind the hole of collapsing, the putting operations such as anchor cable, slip casting and just can't carry out of back.
Therefore known anchor cable boring method exists above-mentioned all inconvenience and problem.
Summary of the invention
The object of the invention is to propose a kind of hole of not collapsing, the hole of having bored that makes, the anchor cable that can the carry out subsequent handling smoothly anti-collapse hole construction method of holing.
For realizing above-mentioned purpose, technical solution of the present invention is:
A kind of anchor cable anti-collapse hole construction method of holing is characterized in that may further comprise the steps:
A, pit earthwork excavation;
B, the cleaning of side slope surface dust, smooth and excavation slope unwrapping wire;
C, installation drilling machine equipment;
D, employing one joint core bit boring, said core bit is a hollow type, and the drilling rod of said core bit also is a hollow type, and diameter is 90～120mm, and length is 1.0～1.2m;
E, the built-in bit bore of employing one joint; Said built-in drill bit is solid, and the drilling rod of said built-in drill bit is hollow, and said built-in drill bit is arranged on the inside of said core bit; The drill pipe diameter of said built-in drill bit is than the little 5～8mm of drill pipe diameter of core bit, and length is 1.0～1.2m;
F, alternately repeating step d and e adopt a joint column drill bar drill hole, and the mode of holing with the built-in drilling rod of a joint is again crept into successively in turn, until getting into the design hole depth;
G, clear hole and all withdraw from built-in drill bit drilling rod;
H, installation anchor cable and Grouting Pipe;
I, slip casting and withdraw from the drilling rod of coring, the drilling rod of coring is withdrawed from marginal not slurry limit, whenever withdraws from once joint and cores drilling rod ftercompction slip casting once;
J, all withdraw from core drilling rod and integral body again ftercompction slip casting once accomplish the construction of anti-collapse hole.
The anchor cable of the present invention anti-collapse hole construction method of holing can also adopt following technical measures further to realize.
Aforesaid method, among the wherein said step f, said the coring during drilling rod of constructing, said built-in drilling rod is not extracted; When constructing said built-in drilling rod, the said drilling rod of coring is not also extracted.
After adopting technique scheme, the anchor cable of the present invention anti-collapse hole construction method of holing has the following advantages:
1, construction sequence is reasonable in design, simple to operate;
2, can be relatively poor to soil property, boring be prone to the to collapse place in hole constructs, and obtains better construction effect;
3, the construction pore-creating qualification rate reaches more than 95%.
Description of drawings
Fig. 1 concerns sketch map for core drilling rod and the built-in drilling rod position of the embodiment of the invention.
Among the figure: 1 drilling rod of coring, 2 built-in drilling rods.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is illustrated further.
See also Fig. 1, Fig. 1 concerns sketch map for core drilling rod and the built-in drilling rod position of the embodiment of the invention at present.As shown in the figure, said built-in drilling rod 2 is arranged in the said drilling rod 1 of coring.
The anchor cable of the present invention anti-collapse hole construction method of holing may further comprise the steps:
A, pit earthwork excavation;
B, the cleaning of side slope surface dust, smooth and excavation slope unwrapping wire;
C, the conventional drilling machine equipment of installation use same auger to carry out said core bit and built-in drill bit drilling construction;
D, employing one joint core bit boring, said core bit is a hollow type, and the drilling rod of said core bit also is a hollow type, and diameter is 100mm, and length is 1.0～1.2m;
E, the built-in bit bore of employing one joint; Said built-in drill bit is the employed unit-type drill head of common auger; Said built-in drill bit is solid, and the drilling rod of said built-in drill bit is hollow, and said built-in drill bit is arranged on the inside of said core bit; The drill pipe diameter of said built-in drill bit is than the little 5～8mm of drill pipe diameter of core bit, and length is 1.0～1.2m;
F, alternately repeating step d and e adopt a joint column drill bar drill hole, and the mode of holing with the built-in drilling rod of a joint is again crept into successively in turn, until getting into the design hole depth; Said the coring during drilling rod of constructing, said built-in drilling rod is not extracted; When constructing said built-in drilling rod, the said drilling rod of coring is not also extracted;
G, clear hole and all withdraw from built-in drill bit drilling rod;
H, installation anchor cable and Grouting Pipe;
I, slip casting and withdraw from the drilling rod of coring, the drilling rod of coring is withdrawed from marginal not slurry limit, whenever withdraws from once joint and cores drilling rod ftercompction slip casting once;
J, all withdraw from core drilling rod and integral body again ftercompction slip casting once accomplish the anchor cable anti-collapse hole construction of holing, carry out other follow-up works again.
Anchor cable of the present invention is holed anti-collapse hole construction method in the A1 transfer station east side side slope barricade project using of Steel stock Co., Ltd's stock yard improvement project in Shaoguan, Guangdong in year May in March, 2009 to 2009, and effect is remarkable.
Above embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (2)
1. an anchor cable anti-collapse hole construction method of holing is characterized in that may further comprise the steps:
A, pit earthwork excavation;
B, the cleaning of side slope surface dust, smooth and excavation slope unwrapping wire;
C, installation drilling machine equipment;
D, employing one joint core bit boring, said core bit is a hollow type, and the drilling rod of said core bit also is a hollow type, and diameter is 90～120mm, and length is 1.0～1.2m;
E, the built-in bit bore of employing one joint; Said built-in drill bit is solid, and the drilling rod of said built-in drill bit is hollow, and said built-in drill bit is arranged on the inside of said core bit; The drill pipe diameter of said built-in drill bit is than the little 5～8mm of drill pipe diameter of core bit, and length is 1.0～1.2m;
F, alternately repeating step d and e adopt a joint column drill bar drill hole, and the mode of holing with the built-in drilling rod of a joint is again crept into successively in turn, until getting into the design hole depth;
G, clear hole and all withdraw from built-in drill bit drilling rod;
H, installation anchor cable and Grouting Pipe;
I, slip casting and withdraw from the drilling rod of coring, the drilling rod of coring is withdrawed from marginal not slurry limit, whenever withdraws from once joint and cores drilling rod ftercompction slip casting once;
J, all withdraw from core drilling rod and integral body again ftercompction slip casting once accomplish the construction of anti-collapse hole.
2. the anchor cable as claimed in claim 1 anti-collapse hole construction method of holing is characterized in that, among the said step f, and said the coring during drilling rod of constructing, said built-in drilling rod is not extracted; When constructing said built-in drilling rod, the said drilling rod of coring is not also extracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110038905.4A CN102644285B (en) | 2011-02-16 | 2011-02-16 | Anchor cable is holed anti-collapse hole construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110038905.4A CN102644285B (en) | 2011-02-16 | 2011-02-16 | Anchor cable is holed anti-collapse hole construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102644285A true CN102644285A (en) | 2012-08-22 |
| CN102644285B CN102644285B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110038905.4A Active CN102644285B (en) | 2011-02-16 | 2011-02-16 | Anchor cable is holed anti-collapse hole construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088819A (en) * | 2013-02-22 | 2013-05-08 | 北京市公路桥梁建设集团有限公司 | Pre-stressed anchor cable construction method |
| CN107288668A (en) * | 2017-08-01 | 2017-10-24 | 宿州市金河矿山设备有限公司 | A kind of anti-collapse aperture apparatus and anti-collapse hole construction method |
| CN111173556A (en) * | 2020-01-13 | 2020-05-19 | 中煤平朔集团有限公司 | Method for preventing borehole collapse during large-diameter borehole replacement traversing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004108056A (en) * | 2002-09-19 | 2004-04-08 | Sumitomo Denko Steel Wire Kk | Grout hose and anchor cable |
| WO2004059091A1 (en) * | 2002-12-24 | 2004-07-15 | Liuzhou Construction Machinery Factory General | Pile-sheet anchor cable and the method of using the anchor cable to reinforce and brace the backfilled road bed and slope |
| CN1766276A (en) * | 2005-10-10 | 2006-05-03 | 吉林大学 | DTH hammer double-tube drilling equipment and drilling method thereof |
-
2011
- 2011-02-16 CN CN201110038905.4A patent/CN102644285B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004108056A (en) * | 2002-09-19 | 2004-04-08 | Sumitomo Denko Steel Wire Kk | Grout hose and anchor cable |
| WO2004059091A1 (en) * | 2002-12-24 | 2004-07-15 | Liuzhou Construction Machinery Factory General | Pile-sheet anchor cable and the method of using the anchor cable to reinforce and brace the backfilled road bed and slope |
| CN1766276A (en) * | 2005-10-10 | 2006-05-03 | 吉林大学 | DTH hammer double-tube drilling equipment and drilling method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘晓青: "《介绍几种砂砾石地基灌浆方法》", 《水利科技与经济》, vol. 15, no. 12, 31 December 2009 (2009-12-31), pages 1131 - 1132 * |
| 陆选之: "《砂矿钻探技术》", 《广西地质》, vol. 2, no. 1, 31 March 1989 (1989-03-31), pages 81 - 86 * |
| 陈勇: "《浅谈锚固工程中钻孔施工工艺的应用》", 《吉林水利》, no. 8, 31 August 2007 (2007-08-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088819A (en) * | 2013-02-22 | 2013-05-08 | 北京市公路桥梁建设集团有限公司 | Pre-stressed anchor cable construction method |
| CN107288668A (en) * | 2017-08-01 | 2017-10-24 | 宿州市金河矿山设备有限公司 | A kind of anti-collapse aperture apparatus and anti-collapse hole construction method |
| CN111173556A (en) * | 2020-01-13 | 2020-05-19 | 中煤平朔集团有限公司 | Method for preventing borehole collapse during large-diameter borehole replacement traversing |
| CN111173556B (en) * | 2020-01-13 | 2022-04-05 | 中煤平朔集团有限公司 | Method for preventing borehole collapse during large-diameter borehole replacement traversing |
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| Publication number | Publication date |
|---|---|
| CN102644285B (en) | 2016-01-27 |
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