CN102561947A - Vibroflotation lead hole construction method based on pneumatic drill slag stirring - Google Patents
Vibroflotation lead hole construction method based on pneumatic drill slag stirring Download PDFInfo
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- CN102561947A CN102561947A CN2012100353606A CN201210035360A CN102561947A CN 102561947 A CN102561947 A CN 102561947A CN 2012100353606 A CN2012100353606 A CN 2012100353606A CN 201210035360 A CN201210035360 A CN 201210035360A CN 102561947 A CN102561947 A CN 102561947A
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Abstract
The invention discloses a vibroflotation lead hole construction method based on pneumatic drill slag stirring. The vibroflotation lead hole construction method includes steps of burying a protecting barrel; drilling a primary lead hole by a percussion drill with a hollow bit; connecting an air hose into an inner tube of the hollow bit and connecting the other end of the air hose with an outlet of an air compressor; starting the air compressor and the percussion drill and deeply drilling a hole downwards; adding water into the hole and continuously drilling the hole until the designed depth of the lead hole is achieved; and stopping drilling the hole and completing lead hole construction. The method is used for vibroflotation lead hole construction without mud stirring, so that building cost of temporary facilities for mud stirring, storing and the like of a mud system, service cost of mud stirring equipment and labor cost of mud stirring are saved, qualified clay can be omitted or used a little or unqualified clay can be used a little, and accordingly cost of the qualified clay or bentonite needed when mud is required to be stirred is remarkable reduced. Compared with a traditional method, the method has the advantages that the quantity of the used clay or bentonite is saved by about 80% to 90%, and drilling cost is saved by about 15% to 25%.
Description
Technical field
The present invention relates to a kind of shaking, relate in particular to a kind of dashing and draw hole construction method based on shaking of pneumatic stirring boring mud towards drawing hole construction method.
Background technology
In civil construction project, the vibro replacement stone column engineering in Hydraulic and Hydro-Power Engineering particularly, the main effect of vibro replacement stone column is that soft stratum or liquescent sandy soil stratum are encrypted to improve the bearing capacity (mechanical property) or the anti-liquefying power of ground.But need the stratum of vibroflotation compaction itself or superstratum to exist more closely knit (hard) stratum or existence to float stratum such as cobble, boulder; Cause vibrating impacter directly pore-creating penetrate firm hard formation; And the mode that adopts Churn drill power traction hole penetrates to adopt behind the firm hard formation again and carries out the filler vibration after vibrating impacter pore-creating to the projected depth and encrypt pile, and this method is to shake to dash draws hole construction method.
Traditional shake to dash draw in the hole construction method, generally adopt mud off, adopt direct circulation or counter to circulate or take out mode that sand bucket takes out sand outside the boring mud tap in the hole, to guarantee the supply of qualified mud constantly for guaranteeing the boring hole of not collapsing.Slurry coat method generally adopts local tonerde or swell soil to mix system, and its cost is very high.If there is not satisfactory clay near the engineering location, need transport qualified clay or swell soil at a distance, cause using clay or bentonitic cost very high; The cost increase is especially obvious under the bad or remote situation of the on-site transportation condition of engineering.
If adopt direct circulation or the anti-circulation mode of slagging tap, to arrange that at the construction field (site) a lot of circulations use mud sump, along with the variation of work plane will be removed also backfill with mud sump at any time, and then arrange new mud sump; If adopt the mode that sand bucket is slagged tap of taking out; To arrange many plasma discharge ditches or mud sump at the construction field (site); And to arrange the personnel and the interior mud boring mud of getting rid of of plant equipment cleaning hole of some; More than these several kinds of slagging-off modes all make the management of job site increase certain degree of difficulty, increased the corresponding engineering construction cost.
Summary of the invention
The object of the invention provides a kind of dashing based on shaking of pneumatic stirring boring mud to draw hole construction method with regard to being in order to address the above problem.
In order to achieve the above object, the present invention has adopted following technical scheme:
The present invention includes following steps:
(1) buries underground and protect bucket;
(2) use drill bit to get out the elementary hole of drawing as the percussive drill of hollow boring bit;
(3) in the interior pipe of hollow boring bit, insert airduct, the other end of said airduct is connected with the outlet of air compressor machine;
(4) start air compressor machine and percussive drill, beginning is at the said elementary downward deep drilling in the hole that draws;
(5) in the hole, add entry, lasting boring is to drawing the hole projected depth;
(6) stop boring, accomplish and draw the hole construction.
In the deep drilling process, the wind that air compressor machine is seen off is suspended in the mud boring mud and in the hole, rolls, and makes boring mud not precipitate; Mud is forming the mud skin in hole wall exosmosis process, mud makes that because of deslagging not its density is bigger in the hole simultaneously, has also played very big retaining wall effect, so the hole of can not collapsing of holing; Because boring mud mixes back common slurry coat method that forms under wind with mud; So can not arrange or few waste discharge mud boring mud; The manual work of cleaning waste mud boring mud and the expense that plant equipment is used have been reduced; Reduce the influence of environmental pollution simultaneously, and improved the technical level of civilized construction.
As preferably, in the said step (1), said to bury the degree of depth of protecting bucket underground be 1.3～2.0m, and the said barrel internal diameter that protects is greater than bore diameter 20～40cm; Burying underground when protecting barrel, it is closely knit that the gravel back-filling in layers will be mixed with clay in the said outside of protecting bucket; In the said step (2), the said elementary degree of depth of drawing the hole is 3～5m; In the said step (3), the internal diameter of said airduct is 25mm.
Particularly, in the said step (5), the said water yield that in the hole, adds entry meets the following conditions: in the hole denseness of boring mud slurries make drill bit in the hole freely up and down and and wind-force can blow the boring mud slurries and roll; In the said step (5); If in the hole boring mud can not all be rolled in the mud and at the wind low suspension in mud; Then in the hole, add clay, the clay amount of adding meets the following conditions: make in the hole boring mud all be rolled in the mud and at the wind low suspension in mud; In said step (4) and the step (5), do not extract boring mud.
As optimal selection, in the said step (6), the said method that stops to hole is: stop the impact of percussive drill earlier, after outside the drill bit proposition hole of said percussive drill, close air compressor machine again, stop air feed.
Further, the weight of the used hollow boring bit of said percussive drill is 2500～4000kg; The air quantity of said air compressor machine is 3～4m
3/ min, pressure are 0.7～1.2MPa.
Beneficial effect of the present invention is:
1, adopt the present invention to shake towards drawing the hole construction; Because by wind-force boring mud being suspended in the mud rolls in the hole, does not precipitate; Mud is forming the mud skin in hole wall exosmosis process; Simultaneously mud makes that because of deslagging not its density is bigger in the hole, has also played very big retaining wall effect, so the hole of can not collapsing of holing;
2, because boring mud mixes back common slurry coat method that forms under wind with mud; So can not arrange or few waste discharge mud boring mud; The manual work of cleaning waste mud boring mud and the expense that plant equipment is used have been reduced; Reduce the influence of environmental pollution simultaneously, and improved the technical level of civilized construction;
3, because without stirred slurry, the mud of therefore having saved mud system stirs and storage etc. is faced and built expenditure of construction and the cost of use of mud mixing plant and the labour cost of executing of mud stirring etc.;
4, can use no or little qualified clay or use underproof clay less; Therefore reduced significantly and need mix system mud and use qualified clay or bentonitic expense; Compare conventional method, can practice thrift and use clay or bentonitic quantity about 80～90%, practice thrift boring cost about 15～25%; Bad, remote for transportation condition, local do not have the object of construction production saving cost effectiveness of qualified clay more remarkable again.
Description of drawings
Accompanying drawing is shaking towards the construction view of drawing hole construction method based on pneumatic stirring boring mud according to the invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made further specific descriptions:
In conjunction with accompanying drawing, the present invention includes following steps:
(1) bury underground and protect bucket 5: burying underground and protecting bucket 5 the degree of depth is 1.3～2.0m, protects bucket 5 internal diameters greater than bore diameter 20～40cm; Protected bucket at 5 o'clock burying underground, protecting bucket 5 outside, to mix the gravel back-filling in layers with clay closely knit.
(2) use drill bit to get out the elementary hole of drawing as the percussive drill of hollow boring bit 4, the elementary degree of depth of drawing the hole is 3～5m, gets into the top of hollow boring bit 4 and elementaryly draws that 1.0～1.5m is advisable in the hole; The weight of hollow boring bit 4 is 2500～4000kg.
(3) in the interior pipe of hollow boring bit 4, insert airduct 2, the internal diameter of airduct 2 is 25mm, and the other end of airduct 2 is connected with the outlet of air compressor machine 1; Being advisable apart from about the bottom 1.5m of hollow boring bit 4 in the bottom of airduct 2, extends to the air compressor machine 1 outside the hole at the top of hollow boring bit 4 with hard plastic tube or high-pressure air hose; The air quantity of air compressor machine 1 is 3～4m3/min, and pressure is 0.7～1.2MPa.
(4) start air compressor machine 1 and percussive drill, beginning is at the elementary deep drilling downwards that draws in the hole.
(5) in the hole, add entry, lasting boring is to drawing the hole projected depth; In the hole, add the water yield of entry, meet the following conditions: the denseness of boring mud slurries 3 makes hollow boring bit 4 freely up and down and wind-force in the hole can blow boring mud slurries 3 to roll in the hole; In the boring procedure; If in the hole boring mud can not all be rolled in the mud and at the wind low suspension in mud; Then in the hole, add clay, the clay amount of adding meets the following conditions: make in the hole boring mud all be rolled in the mud and at the wind low suspension in mud; In the boring procedure, do not extract boring mud, can be according to actual conditions discharge section boring mud slurries 3.
(6) stop boring, accomplish and draw the hole construction; Its process is: stop the impact of percussive drill earlier, will dash
After hitting outside the hollow boring bit 4 proposition holes of rig, close air compressor machine 1 again, stop air feed.
In conjunction with accompanying drawing, in the deep drilling process, the wind that air compressor machine 1 is seen off is suspended in boring mud and in the hole, forms boring mud slurries 3 in the mud, and boring mud slurries 3 do not stop to roll, and make boring mud not precipitate; Mud is forming the mud skin in hole wall exosmosis process, mud makes that because of deslagging not its density is bigger in the hole simultaneously, has also played very big retaining wall effect, so the hole of can not collapsing of holing; Because boring mud and the mixed boring mud slurries 3 of mud form slurry coat method under wind; So can not arrange or few waste discharge mud boring mud; The manual work of cleaning waste mud boring mud and the expense that plant equipment is used have been reduced; Reduce the influence of environmental pollution simultaneously, and improved the technical level of civilized construction.
Claims (10)
1. one kind is dashed based on shaking of pneumatic stirring boring mud and to draw hole construction method, it is characterized in that: may further comprise the steps:
(1) buries underground and protect bucket;
(2) use drill bit to get out the elementary hole of drawing as the percussive drill of hollow boring bit;
(3) in the interior pipe of hollow boring bit, insert airduct, the other end of said airduct is connected with the outlet of air compressor machine;
(4) start air compressor machine and percussive drill, beginning is at the said elementary downward deep drilling in the hole that draws;
(5) in the hole, add entry, lasting boring is to drawing the hole projected depth;
(6) stop boring, accomplish and draw the hole construction.
2. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, it is characterized in that: in the said step (1), said to bury the degree of depth of protecting bucket underground be 1.3～2.0m, and the said barrel internal diameter that protects is greater than bore diameter 20～40cm; Burying underground when protecting barrel, it is closely knit that the gravel back-filling in layers will be mixed with clay in the said outside of protecting bucket.
3. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, and it is characterized in that: in the said step (2), the said elementary degree of depth of drawing the hole is 3～5m.
4. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, and it is characterized in that: in the said step (3), the internal diameter of said airduct is 25mm.
5. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method; It is characterized in that: in the said step (5); The said water yield that in the hole, adds entry meets the following conditions: the denseness of boring mud slurries makes drill bit freely up and down and wind-force in the hole can blow the boring mud slurries to roll in the hole.
6. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method; It is characterized in that: in the said step (5); If in the hole boring mud can not all be rolled in the mud and at the wind low suspension in mud; Then in the hole, add clay, the clay amount of adding meets the following conditions: make in the hole boring mud all be rolled in the mud and at the wind low suspension in mud.
7. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, it is characterized in that: in said step (4) and the step (5), do not extract boring mud.
8. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method; It is characterized in that: in the said step (6), the said method that stops to hole is: stop the impact of percussive drill earlier, after outside the drill bit proposition hole of said percussive drill; Close air compressor machine again, stop air feed.
9. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, and it is characterized in that: the weight of the hollow boring bit that said percussive drill is used is 2500～4000kg.
10. according to claim 1 dashing based on shaking of pneumatic stirring boring mud drawn hole construction method, and it is characterized in that: the air quantity of said air compressor machine is 3～4m
3/ min, pressure are 0.7～1.2MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210035360 CN102561947B (en) | 2012-02-17 | 2012-02-17 | Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
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| CN 201210035360 CN102561947B (en) | 2012-02-17 | 2012-02-17 | Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
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| CN102561947B CN102561947B (en) | 2013-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862708A (en) * | 2016-04-26 | 2016-08-17 | 北京振冲工程机械有限公司 | Down-the-hole hammer and guide hole matched construction method for vibro-replacement stone column composite foundation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU681154A2 (en) * | 1978-04-14 | 1979-08-25 | Днепропетровский Институт Железнодорожного Транспорта Им. М.И.Калинина | Device for placing concrete in boreholes |
| JPS57100217A (en) * | 1980-12-12 | 1982-06-22 | Shimizu Constr Co Ltd | Refilling work for vacant area of concrete pile driven in site |
| JPS62194323A (en) * | 1986-02-20 | 1987-08-26 | Ohbayashigumi Ltd | Slime discharging for mud-water excavation work |
| CN101109179A (en) * | 2007-06-21 | 2008-01-23 | 河北建设勘察研究院有限公司 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
| CN101831906A (en) * | 2009-03-09 | 2010-09-15 | 钱圣德 | Dry type pneumatic rock drilling pile-driving machine and working method thereof |
| CN202000342U (en) * | 2011-02-18 | 2011-10-05 | 史政 | High air pressure pneumatic impact rock penetrating and inserting device for continuous flight auger |
-
2012
- 2012-02-17 CN CN 201210035360 patent/CN102561947B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU681154A2 (en) * | 1978-04-14 | 1979-08-25 | Днепропетровский Институт Железнодорожного Транспорта Им. М.И.Калинина | Device for placing concrete in boreholes |
| JPS57100217A (en) * | 1980-12-12 | 1982-06-22 | Shimizu Constr Co Ltd | Refilling work for vacant area of concrete pile driven in site |
| JPS62194323A (en) * | 1986-02-20 | 1987-08-26 | Ohbayashigumi Ltd | Slime discharging for mud-water excavation work |
| CN101109179A (en) * | 2007-06-21 | 2008-01-23 | 河北建设勘察研究院有限公司 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
| CN101831906A (en) * | 2009-03-09 | 2010-09-15 | 钱圣德 | Dry type pneumatic rock drilling pile-driving machine and working method thereof |
| CN202000342U (en) * | 2011-02-18 | 2011-10-05 | 史政 | High air pressure pneumatic impact rock penetrating and inserting device for continuous flight auger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862708A (en) * | 2016-04-26 | 2016-08-17 | 北京振冲工程机械有限公司 | Down-the-hole hammer and guide hole matched construction method for vibro-replacement stone column composite foundation |
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Inventor after: Li Quanfu Inventor after: Du Lin Inventor after: Deng Shumi Inventor after: Xiang Xuezhong Inventor after: He Kaiping Inventor after: Fang Chengming Inventor after: Gao Jian Inventor after: Wang Rong Inventor after: Zhong Yongbing Inventor after: Ran Longwu Inventor before: Li Quanfu Inventor before: Deng Shumi |
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Free format text: CORRECT: INVENTOR; FROM: LI QUANFU DENG SHUMI TO: LI QUANFU DENG SHUMI XIANG XUEZHONG HE KAIPING FANG CHENGMING GAO JIAN WANG RONG ZHONG YONGBING RAN LONGWU DU LIN |
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