CN204299468U - A kind of positioning and guiding system and device of hidden hole drilling boring - Google Patents
A kind of positioning and guiding system and device of hidden hole drilling boring Download PDFInfo
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- CN204299468U CN204299468U CN201420770588.4U CN201420770588U CN204299468U CN 204299468 U CN204299468 U CN 204299468U CN 201420770588 U CN201420770588 U CN 201420770588U CN 204299468 U CN204299468 U CN 204299468U
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Abstract
The utility model aim to provide a kind of hidden hole drilling boring positioning and guiding system and device, be made up of the positioning and guiding framework be shelved on casing and guide pipe two parts, described positioning and guiding framework be by upper steel plate, lower steel plate and between be connected support bar form; Wherein, the profile of upper steel plate is greater than the external diameter of casing, can shelf at casing top; The profile of lower steel plate is less than the internal diameter of casing, can be deep into casing inside; Described upper and lower steel plate offers accordingly the through hole had for installing described guide pipe; Wherein the internal diameter of guide pipe is fitted mutually with the drilling rod external diameter of hidden hole drilling.The utility model draws based on the hidden hole drilling of catalase theory the one guiding new equipment will used in " honeycomb briquette " technique, can make into rock drilling depth Be very effective, and drill bit loss is little, card is hammered into shape, fall to hammer into shape phenomenon reduces, enter rock efficiency high, greatly save construction cost, remarkable in economical benefits.
Description
Technical field
The utility model relates to the construction field of naked rock hardness rock matter drilled pile in water, specifically, is when adopting hidden hole drilling auxiliary impact to creep into the construction of row " honeycomb briquette hole " formula, needs the positioning and guiding system and device of a kind of hidden hole drilling boring of using.
Background technology
After 21 century, along with science and technology constantly progress, transport development cause obtains and develops fast, and the difficult problem run in the engineering construction of water Bridge is also badly in need of facing solution.During underwater drilling pile driving construction, in water, the construction of naked rock hardness rock matter drilled pile is always the difficult point in pile foundation construction, because naked rock needs to solve the problem of the easy spillage of shield-tube embedment under intectate condition in water, hard rock matter needs to solve the excessively slow problem of penetration rate in pore forming process.
, rock stratum large for Pile Diameter be hard, it is long to enter the rock degree of depth, (rig one spuds in, enter riverbed and be naked rock or a small amount of cover layer, and enter rock and be middle weathered granite, intensity is at about 60MPa), if adopt conventional percussion drill construction technology, because rock stratum is hard, drill bit is easily exploded, and impacts drilling depth every day less than 20cm.
In view of above problem and principle, the down-the-hole inventor contemplating the pipe canopy technique in constructing tunnel drills through the method for aperture.This method is based on rock-cracking mechanism: before pore-forming, destroys core circumference in hole, increases the scope of freedom, rock stratum, to reduce its stress level, makes it to be conducive to percussion drill and creep into further, improve its operating efficiency.
But in order to hidden hole drilling can be made to meet the tendency in hard rock matter pile foundation construction in bridge water, also need the problem of a solution positioning and guiding.Because when hidden hole drilling draws " honeycomb briquette ", hidden hole drilling drilling rod needs a positioning and guiding system and device, to get hole by size on face, rock stratum, drilling rod also can set aside to rock stratum along guide pipe always; When air compressor machine aperture blowing, boring mud can be discharged to the outside of pile foundation along guide pipe, thus forms " honeycomb briquette " hole, destroys overall hard rock stratum, improves significant efficiency for percussion drill creeps into.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, the positioning and guiding system and device that a kind of hidden hole drilling is holed is provided, allow well hidden hole drilling drilling rod be permanently connected to face, rock stratum along fixing position, and the boring mud allowing air compressor machine blow out can be discharged to outside pile foundation along guide pipe.
To achieve these goals, the technical solution adopted in the utility model is:
Hidden hole drilling boring a positioning and guiding system and device, be made up of the positioning and guiding framework be shelved on casing and guide pipe two parts, it is characterized in that, described positioning and guiding framework be by upper steel plate, lower steel plate and between be connected support bar form; Wherein, the profile of upper steel plate is greater than the external diameter of casing, can shelf at casing top; The profile of lower steel plate is less than the internal diameter of casing, can be deep into casing inside; Described upper and lower steel plate offers accordingly the through hole had for installing described guide pipe; Wherein the internal diameter of guide pipe is fitted mutually with the drilling rod external diameter of hidden hole drilling.
As further improvement of the utility model, the through hole on described upper and lower steel plate is circumferentially evenly being arranged, and size and number is determined according to pile foundation and rock stratum hardness; Distance between Kong Yukong remains on 70-90cm.
As further improvement of the utility model, during the diameter 2.8m of described pile foundation, the diameter 180mm of described through hole, quantity 16, point 2 rows are arranged, i.e. inner periphery 4, excircle 12.
As further improvement of the utility model, during the diameter 2.2m of described pile foundation, the diameter 180mm of described through hole, quantity 12, point 2 rows are arranged, i.e. inner periphery 3, excircle 9.
As further improvement of the utility model, described upper and lower steel plate is that circular 8mm steel plate is made; Wherein upper steel plate diameter 20cm larger than casing diameter, lower steel plate diameter 20cm less of casing diameter.
As further improvement of the utility model, described support bar is made up of I 18 I-steel of some long 1m, and is that electric welding is fixedly connected with upper and lower steel plate.
As further improvement of the utility model, described guide pipe is made up of the galvanized pipe of internal diameter 150mm, wall thickness 5mm, and one end exposes outside surperficial more than the 10cm of described upper steel plate, and one end is directly shelved on face, riverbed.Such guide pipe is welded and fixed with upper steel plate with regard to not needing, and directly can be shelved on work positioning framework carrying out pilot hole.
Compared with prior art, for hard rock matter pile foundation, as adopted conventional impact pore-forming, enter rock drilling depth slow; And the utility model draws " honeycomb briquette " technique based on the hidden hole drilling of catalase theory, according to lithological characteristic, select hidden hole drilling in pile foundation planar range, drill through the aperture of some in advance, creep into percussion drill again after making catalase; And when percussion drill creeps into, by casing process, stop casing spillage, accelerated penetration rate, entered rock drilling depth Be very effective, about 4 times of traditional engineering method can have been reached; And drill bit loss is little, card is hammered into shape, fall to hammer into shape phenomenon reduces, and enters rock efficiency high, greatly saves construction cost, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the guide pipe structural representation in Fig. 1.
Through hole layout viewing on the steel plate that Fig. 3 is Pile Diameter when being 2.8m.
Through hole layout viewing on the steel plate that Fig. 4 is Pile Diameter when being 2.2m.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, the positioning and guiding system and device of hidden hole drilling boring of the present utility model, is made up of positioning and guiding framework and these two parts of guide pipe 4.After pile foundation in water shield-tube embedment is handled well, positioning and guiding framework (concrete model is determined according to calculating) is made at the scene with steel plate and I-steel, in general, positioning and guiding framework adopts 8mm steel plate and I 18 I-steel to make, the height of positioning and guiding framework is generally 1m, arranging respectively up and down between upper steel plate 1 and lower steel plate 2, two block plate adopts I 18 I-steel of 3 or 5 1m length to be connected as support bar 3; Wherein, upper steel plate 1 diameter 20cm larger than casing diameter, lower steel plate 2 diameter 20cm less of casing diameter, whole like this positioning framework can be shelved on casing top mouth, and lower steel plate 2 is deep in casing and goes.
Subsequently, two block plates cut the hole of down-the-hole quantity, hole diameter considers the external diameter of down-the-hole guide pipe 4, generally gets 180mm.Because adopt hidden hole drilling drill pipe diameter to be 130mm, stake casing top is 15m to naked scar maximum height, so guide pipe 4 general employing internal diameter is the galvanized pipe of 150mm wall thickness 5mm, length is that the 10cm on casing top is to face, the riverbed discrepancy in elevation.
In reality, the size of casing when the size of the upper and lower steel plate of positioning and guiding framework depends on pile foundation construction, the number of cutting down-the-hole quantity also depends on the size of pile foundation and the hardness of rock stratum, between Kong Yukong, distance controlling is at about 80cm, it is the above 50cm place of absolute altitude at the bottom of naked scar to pile foundation that down-the-hole drills through hole depth, thus ensures the integrality of stake bed rock layer.
Number of openings when Fig. 3 is the diameter 2.8m of pile foundation is 16, and point 2 rows are arranged, i.e. inner periphery 4, excircle 12; Number of openings when Fig. 4 is the diameter 2.2m of pile foundation is 12, and point 2 rows are arranged, i.e. inner periphery 3, excircle 9.
To sum up, hidden hole drilling boring positioning and guiding system and device described in the utility model is a kind of easy construction, and security reliability is high, the design that construction cost is low.In practice of construction, the first step installs guide-localization framework, first adopts loop wheel machine lifting to transfer in casing; Transfer after putting in place, due to upper steel plate diameter 20cm larger than casing, be directly shelved on casing by upper steel plate, whole the stressed of positioning and guiding frame is born by upper steel plate; After installing positioning and guiding framework, guide pipe inserts in the reserved via holes of positioning and guiding framework, till guide pipe is inserted into face, riverbed always by loop wheel machine one by one; So far, the positioning and guiding system and device be made up of positioning and guiding framework and guide pipe is all in place, for hidden hole drilling boring is got ready.
Before construction, to study engineering geology, landforms, hydrologic regime and design parameter, the geological mapping report that serious analysis design provides, hydrological data, design drawing, entity investigates riverbed situation (or according to some foundation construction records of holing when in earlier stage setting up the temporary projects such as trestle), carries out multianalysis to engineering geology, landforms, the hydrology, design parameter.For riverbed, its overburden cover and flatness thereof need be understood, naked rock elevation; For lithology geology, the origin cause of formation and the kind of rock need be understood, rock structure and cranny development situation, rock strength etc.; For design parameter, specify stake footpath, socket length; Determine the length at the bottom of from naked rock to design stake.
For the different riverbed of engineering, address and aperture situation, choice and optimization is carried out to the air compressor machine in cleaning riverbed, down-the-hole drill and the supporting construction machinery such as air compressor machine drilling rod, drill bit thereof and equipment.And pile foundation that embedding rock thickness dark hard for rock strength, a percussive drill at least will configure 2 drill bits and number fuller tooth, thus ensures the penetration rate of hard rock basic unit.After corresponding corollary equipment inventory is put in order, march into the arena in order to machinery and equipment according to schedule requirement, process is debugged machinery and equipment by mechanical engineer, thus ensures normal construction.
Before steel pile casting is transferred, by underwater operation teams and groups (diving teams and groups), face, riverbed situation is investigated, carry out suction sand to there being a small amount of tectal part and rinsing well, guarantee face, riverbed exposed bedrock, after ensureing that steel pile casting transfers casing back cover, casing bottom concrete and naked scar are fitted closely.
Positioning framework is shelved on after on casing, adopts loop wheel machine that the guide pipe made is transferred to naked scar along posting frame aperture always.It is in place that guide pipe places rear down-the-hole drill, and rig model is TH368Y, and drilling rod gets hole along guide pipe spreading, average 10 minutes drilling depth 3m.The disintegrating slag getting hole is blown out by the air compressor machine of 17m3/min.Stop getting hole in time getting absolute altitude 50cm at the bottom of hole to design stake, then start to get second hole, so circulation is got after hole completes until all apertures in a pile foundation, carries out the 2nd pile base and gets hole.
Drawn behind " honeycomb briquette " hole until position, hole, in casing, poured into yellow mud slurrying, then adopt percussion drill to creep into.When reaching hole termination depth, complete first time clear hole with mud separator, and measure depth of pore forming with lining rope.After having descended steel reinforcement cage, carry out secondary pile hole cleaning.Heavy caliber two adopts gas lift reverse circulation clearly.Sediment thickness at the bottom of hole controls by designing requirement, and general embedded rock pile must not be greater than 5cm.
Finally, it is also noted that what enumerate above is only a specific embodiment of the present utility model.Obviously, the utility model can also have many distortion, all distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, and all should think protection domain of the present utility model.
Claims (7)
1. the positioning and guiding system and device of a hidden hole drilling boring, be made up of the positioning and guiding framework be shelved on casing and guide pipe two parts, it is characterized in that, described positioning and guiding framework be by upper steel plate (1), lower steel plate (2) and between be connected support bar (3) form; Wherein, the profile of upper steel plate (1) is greater than the external diameter of casing, can shelf at casing top; The profile of lower steel plate (2) is less than the internal diameter of casing, can be deep into casing inside; Described upper and lower steel plate (1,2) offers accordingly the through hole had for installing described guide pipe (4); The internal diameter of described guide pipe (4) is fitted mutually with the drilling rod external diameter of hidden hole drilling.
2. the positioning and guiding system and device of hidden hole drilling boring according to claim 1, it is characterized in that, the through hole on described upper and lower steel plate (1,2) is circumferentially evenly being arranged, and size and number is determined according to pile foundation and rock stratum hardness; Distance between Kong Yukong remains on 70-90cm.
3. the positioning and guiding system and device of hidden hole drilling according to claim 2 boring, is characterized in that, during the diameter 2.8m of described pile foundation, the diameter 180mm of described through hole, quantity 16, point 2 rows are arranged, i.e. inner periphery 4, excircle 12.
4. the positioning and guiding system and device of hidden hole drilling according to claim 2 boring, is characterized in that, during the diameter 2.2m of described pile foundation, the diameter 180mm of described through hole, quantity 12, point 2 rows are arranged, i.e. inner periphery 3, excircle 9.
5. the positioning and guiding system and device of hidden hole drilling boring according to any one of claim 1 to 4, is characterized in that, described upper and lower steel plate (1,2) is that circular 8mm steel plate is made; Wherein upper steel plate (1) diameter 20cm larger than casing diameter, lower steel plate (2) diameter 20cm less of casing diameter.
6. the positioning and guiding system and device of hidden hole drilling boring according to claim 5, it is characterized in that, described support bar (3) is made up of the I18 I-steel of some long 1m, and with upper and lower steel plate (1,2) for electric welding is fixedly connected with.
7. the positioning and guiding system and device of hidden hole drilling boring according to claim 6, it is characterized in that, described guide pipe (4) is made up of the galvanized pipe of internal diameter 150mm, wall thickness 5mm, one end exposes outside surperficial more than the 10cm of described upper steel plate (1), and one end is directly shelved on face, riverbed.
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| CN201420770588.4U CN204299468U (en) | 2014-12-09 | 2014-12-09 | A kind of positioning and guiding system and device of hidden hole drilling boring |
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| CN201420770588.4U CN204299468U (en) | 2014-12-09 | 2014-12-09 | A kind of positioning and guiding system and device of hidden hole drilling boring |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464593A (en) * | 2016-01-18 | 2016-04-06 | 长江三峡勘测研究院有限公司（武汉） | Localization guidance device for continuous pore-forming or groove-forming of down-the-hole drill |
| CN105804079A (en) * | 2016-03-31 | 2016-07-27 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Tool and method for smashing hard rock in large-diameter pile hole |
| CN107143281A (en) * | 2017-05-18 | 2017-09-08 | 浙江省地矿建设有限公司 | The method of construction bored concrete pile |
| CN107700479A (en) * | 2017-08-25 | 2018-02-16 | 中铁上海工程局集团第五工程有限公司 | A kind of construction method of large diameter drill hole pile |
| CN112411548A (en) * | 2020-12-07 | 2021-02-26 | 中国建筑第四工程局有限公司 | Method for constructing large-diameter pile group holes and guiding device |
-
2014
- 2014-12-09 CN CN201420770588.4U patent/CN204299468U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464593A (en) * | 2016-01-18 | 2016-04-06 | 长江三峡勘测研究院有限公司（武汉） | Localization guidance device for continuous pore-forming or groove-forming of down-the-hole drill |
| CN105464593B (en) * | 2016-01-18 | 2018-06-08 | 长江三峡勘测研究院有限公司（武汉） | For the continuous pore-forming of hidden hole drilling or the locating guide device of grooving |
| CN105804079A (en) * | 2016-03-31 | 2016-07-27 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Tool and method for smashing hard rock in large-diameter pile hole |
| CN107143281A (en) * | 2017-05-18 | 2017-09-08 | 浙江省地矿建设有限公司 | The method of construction bored concrete pile |
| CN107143281B (en) * | 2017-05-18 | 2019-03-26 | 浙江省地矿建设有限公司 | The method of construction bored concrete pile |
| CN107700479A (en) * | 2017-08-25 | 2018-02-16 | 中铁上海工程局集团第五工程有限公司 | A kind of construction method of large diameter drill hole pile |
| CN112411548A (en) * | 2020-12-07 | 2021-02-26 | 中国建筑第四工程局有限公司 | Method for constructing large-diameter pile group holes and guiding device |
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