CN110185390A - A kind of mini pile clump of piles boring positioning guiding device and application method - Google Patents

A kind of mini pile clump of piles boring positioning guiding device and application method Download PDF

Info

Publication number
CN110185390A
CN110185390A CN201910497241.4A CN201910497241A CN110185390A CN 110185390 A CN110185390 A CN 110185390A CN 201910497241 A CN201910497241 A CN 201910497241A CN 110185390 A CN110185390 A CN 110185390A
Authority
CN
China
Prior art keywords
piles
clump
mini pile
pile
guiding device
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
Application number
CN201910497241.4A
Other languages
Chinese (zh)
Inventor
杨俊�
陈玉发
张建平
敖凌宇
罗成
魏叔彬
聂一龙
李海龙
赵磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Original Assignee
Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd filed Critical Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority to CN201910497241.4A priority Critical patent/CN110185390A/en
Publication of CN110185390A publication Critical patent/CN110185390A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30Specific pattern of wells, e.g. optimizing the spacing of wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling

Abstract

The invention discloses a kind of mini pile clump of piles boring positioning guiding device and its installation methods, including top plate, basal disc, guide pipe, casing, fastening nut, adjusting nut and pre-embedded bolt, top plate and basal disc are respectively welded with above and below casing, and guide pipe is welded in top plate and basal disc presets pilot hole.Then by positioning otic placode with the pre-embedded bolt connection being embedded in concrete cushion in advance.It is horizontal by adjusting nut regulating device therebetween.After the completion of Level tune, adjusting nut is welded with pre-embedded bolt, then tightens fastening nut.The configuration of the present invention is simple can be solved the problems, such as effectively that precision located higher can not be carried out at pile body to clump of piles each group in the construction of mini pile pile group under the conditions of existing machinery and is oriented to.The construction quality of a mini pile clump of piles is improved, precision located higher and guiding are carried out to reach clump of piles each group into pile body to obtain preferable mini pile pile group construction effect, to meet the purpose for reducing and influencing when large diameter pile foundation construction on tunnel.

Description

A kind of mini pile clump of piles boring positioning guiding device and application method
Technical field
The present invention relates to a kind of mini pile clump of piles boring positioning guiding device and methods.Belong to miniature pile construction technology neck Domain.
Background technique
The change and development of trip mode, rail traffic, urban pavement traffic are extended in all direction, many subways, high-speed rail tunnel The underground space positioned at city.With the process of urbanization, urban land growing tension, land resource scarcity considers to save and use Ground, green sustainable development, often build certain buildings on the important underground structure top such as subway, high-speed rail tunnel.In pile foundation Construction in, when the pile foundation of major diameter passes through neighbouring cut and cover tunneling tunnel basis or shallow mining method tunnel rock, most probably Cause the displacement, sedimentation and other irreversible disturbances of the cracking, rail line in tunnel.
To the shadow in tunnel when going along with sb. to guard him large diameter pile foundation frequently with a mini pile clump of piles under the conditions of the prior art to reduce its construction It rings.Its borehole accuracy is accurately controlled since existing common miniature pile construction machinery is more difficult.And major diameter is gone along with sb. to guard him in a mini pile clump of piles In pile foundation construction, need to carry out precision located higher and guiding at pile body to clump of piles each group to obtain preferable mini pile pile group Construction effect, to meet the purpose for reducing and influencing when large diameter pile foundation construction on tunnel.
Summary of the invention
The technical problem to be solved by the present invention is a kind of mini pile clump of piles boring positioning guiding device and method are provided, with Under the conditions of solution existing machinery precision located higher and guiding can not be carried out at pile body to clump of piles each group in the construction of mini pile pile group.
The technical scheme is that a kind of mini pile clump of piles boring positioning guiding device, including top plate, top plate and basal disc Between one group of parallel guide pipe is installed, guide pipe installed position is corresponded in top plate and basal disc equipped with pilot hole, basal disc passes through Pre-embedded bolt is fixed.
Positioning otic placode is connected on the outer ring of basal disc, pre-embedded bolt is made of anchor disc and screw rod, and screw rod sequentially passes through micro- Adjust nut, positioning otic placode and fastening nut.
Top plate is equipped with horizontal bubble.
Top plate is equipped with hanging ring.
Top plate and basal disc are respectively provided at casing upper and lower, and three constitutes cylindrical structure.
Guide pipe side wall is equipped with overflow launder.
It positions otic placode and is equipped with three, uniform ring cloth is in basal disc outer ring.
Adjusting nut has adjusted threaded welding after device level.
Anchor disc is semicircular arc-shaped, and two pieces of anchor plates extended downwardly are arranged at bottom.
Screw rod penetrates anchor disc, and two pieces of anchor plates are connected with screw rod.
The present invention also provides the boring methods of above-mentioned mini pile clump of piles boring positioning guiding device, comprising the following steps:
(1) positioning of mini pile pile group position is completed by design requirement.
(2) earth excavation is carried out in mini pile pile group position, cutting depth should meet mini pile clump of piles boring positioning and lead Top plate absolute altitude is identical in miniature pile group designed elevation after to device installation.
(3) casting concrete bed course, and pre-embedded bolt, therebetween position pre-embedded bolt, so that leading after device installation It is corresponding to pipe and mini pile clump of piles design hole location.
(4) adjusting nut is screwed into pre-embedded bolt.Then with hanging device by mini pile clump of piles boring positioning guiding device Foundation pit is hung in, after otic placode is corresponded to pre-embedded bolt therebetween, gently as on pre-embedded bolt.After being installed, adjusting nut is adjusted, So that circular horizontal bubble is reached device horizon effect between two parties, finally tightens fastening nut.
(5) after drilling machine adjustment is in place, drilling rod is drilled down by guide pipe.
The beneficial effects of the present invention are: compared with prior art, the present invention has the advantage that
Solve existing machinery under the conditions of mini pile pile group construction in can not to clump of piles each group at pile body carry out precision located higher and The problem of guiding.
Reduce the perpendicularity deviation due to caused by mechanical vibration in miniature pile construction.
Easy to operate using mini pile clump of piles boring positioning guiding device, guiding is reliable, reduces to drilling operation personnel's It is required that and mechanical requirement, be convenient for site operation.
The configuration of the present invention is simple, ingenious in design, easy to operate, mini pile pile group is applied under the conditions of can effectively solving existing machinery The problem of can not carrying out precision located higher and guiding at pile body to clump of piles each group in work.Improve the construction matter of a mini pile clump of piles Amount carries out precision located higher and is oriented to obtain preferable mini pile pile group construction effect to reach clump of piles each group into pile body, To meet the purpose for reducing and influencing when large diameter pile foundation construction on tunnel.
Detailed description of the invention
Fig. 1 is a kind of mini pile clump of piles boring positioning guiding device axonometric drawing.
Fig. 2 is a kind of mini pile clump of piles boring positioning guiding device left view.
Fig. 3 is a kind of mini pile clump of piles boring positioning guiding device top view.
Fig. 4 is a kind of mini pile clump of piles boring positioning guiding device front view.
Fig. 5 is drawing at a kind of mini pile clump of piles boring positioning guiding device pre-embedded bolt.
Fig. 6 is the improvement structure of anchor disc.
Fig. 7 is using the overall structure diagram for improving structure anchor disk.
In attached drawing, 1, top plate, 2, basal disc, 3, casing, 4, circular horizontal bubble, 5, hanging ring, 6, fastening nut, 7, adjusting spiral shell Mother, 8, otic placode, 9, pre-embedded bolt, 10, guide pipe, 11, pilot hole, 12, screw rod, 13, anchor disc, 14, overflow notch.
Specific embodiment
With reference to the accompanying drawing and invention is described further in specific embodiment:
As shown, a kind of mini pile clump of piles boring positioning guiding device of the embodiment of the present invention, including top plate 1, basal disc 2, casing 3, fastening nut 6, adjusting nut 7, pre-embedded bolt 9 and guide pipe 10, basal disc 2 and top plate 1 be respectively welded with the top of casing 3 and under Side, basal disc 2 and 1 radius of top plate are greater than the miniature pile group of going along with sb. to guard him of implementation and safeguard radius 400mm, it is ensured that basal disc covers pile group enough;It leads Basal disc 2 is welded in pipe 10 and top plate 1 presets pilot hole 11, and 10 interior diameter of guide pipe is greater than mini pile diameter S=5mm, Guan Gao H and answers Meet S/H less than the 1/2 of stake design verticality, inner tubal wall adds lubricating oil, and drill bit is enable to pass through.2 upper ear plate 8 of basal disc is same Its upper and lower fastening nut 6, adjusting nut 7 and pre-embedded bolt 9 act on clamp device, after adjusting nut 7 has adjusted device level It is welded with pre-embedded bolt 9.Top plate 1 and basal disc 2 are provided with pilot hole 11 by design pile group relative position.Top plate top is equipped with round water Flat bubble 4 and hanging ring 5.Three 8 uniform weldings of positioning otic placode are on 2 outer ring of basal disc.Guide pipe 10 is equipped with overflow notch 14, notch Wide 2cm, it acts as so that mud reflux is collected mud in casing.Pre-embedded bolt 9 by radius 200mm anchor disc 13 and screw rod 12 compositions, screw rod 12 are vertically mounted on the center of anchor disc 13.
The above-mentioned boring method using mini pile clump of piles boring positioning guiding device, includes the following steps:
(1) positioning of mini pile pile group position is completed by design requirement.
(2) earth excavation is carried out in mini pile pile group position, cutting depth should meet mini pile clump of piles boring positioning and lead 1 absolute altitude of top plate is in miniature pile group designed elevation after to device installation.
(3) casting concrete bed course, and pre-embedded bolt 9, therebetween position pre-embedded bolt 9, so that after device installation Guide pipe 10 and mini pile clump of piles design hole location are corresponding.
(4) adjusting nut 7 is screwed into pre-embedded bolt 9.Then mini pile clump of piles boring positioning is oriented to hanging device and is filled It sets and hangs in foundation pit, after otic placode 8 is corresponded to pre-embedded bolt 9 therebetween, gently as on pre-embedded bolt 9.After being installed, adjust Nut 7, makes circular horizontal bubble reach device horizon effect between two parties, finally tightens fastening nut 6.
(5) after drilling machine adjustment is in place, drilling rod is drilled down by guide pipe 10.
Embodiment 2: further, such as Fig. 6 and Fig. 7, in 13 bottom of anchor disc, design has the anchor plate extended downwardly, shares Two pieces of anchor plates are mutually perpendicular to be mounted on 13 bottom of anchor disc.Further, screw rod 12 passes through anchor disc 13 and one piece of anchoring Plate, another piece of anchor plate are vertically mounted on screw rod 12.The fixed stability of anchor disc 13 can be improved by this structure.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention Protection scope.

Claims (10)

1. a kind of mini pile clump of piles boring positioning guiding device, including top plate (1), it is characterised in that: top plate (1) and basal disc (2) Between one group of parallel guide pipe (10) is installed, corresponded in top plate (1) and basal disc (2) guide pipe (10) installed position be equipped with lead To hole (11), basal disc (2) is fixed by pre-embedded bolt (9).
2. mini pile clump of piles boring positioning guiding device according to claim 1, it is characterised in that: on the outer ring of basal disc (2) It is connected with positioning otic placode (8), pre-embedded bolt (9) bolt is made of anchor disc (13) and screw rod (12), and screw rod (12) sequentially passes through Fine-tuning nut (7), positioning otic placode (8) and fastening nut (7).
3. mini pile clump of piles boring positioning guiding device according to claim 1, it is characterised in that: top plate (1) is equipped with water Flat bubble (4);Top plate (1) is equipped with hanging ring (5).
4. mini pile clump of piles boring positioning guiding device according to claim 1, it is characterised in that: top plate (1) and basal disc (2) It is respectively provided at casing (3) upper and lower, three constitutes cylindrical structure.
5. mini pile clump of piles boring positioning guiding device according to claim 1, it is characterised in that: on guide pipe (10) side wall Equipped with overflow launder (14).
6. mini pile clump of piles boring positioning guiding device according to claim 2, it is characterised in that: positioning otic placode (8) is equipped with Three, uniform ring cloth is in basal disc (2) outer ring.
7. mini pile clump of piles boring positioning guiding device according to claim 2, it is characterised in that: adjusting nut (7) is adjusted Threaded (12) welding after complete device is horizontal.
8. mini pile clump of piles boring positioning guiding device according to claim 2, it is characterised in that: the shape of anchor disc (13) For semicircular arc-shaped, two pieces of anchor plates extended downwardly are arranged at bottom.
9. mini pile clump of piles boring positioning guiding device according to claim 8, it is characterised in that: screw rod (12) is passed down through Anchor disc (13), anchor plate and screw rod (12) connection;The junction section of anchor plate has reinforcing rib.
10. a kind of boring method of mini pile clump of piles boring positioning guiding device, characterized by the following steps:
(1) positioning of mini pile pile group position is completed by design requirement;
(2) earth excavation is carried out in mini pile pile group position, cutting depth should meet mini pile clump of piles boring positioning guiding dress Top plate (1) absolute altitude is higher than miniature pile group designed elevation after setting installation;
(3) casting concrete bed course, and pre-embedded bolt (9), therebetween position pre-embedded bolt (9), so that after device installation Guide pipe (10) is corresponding with mini pile clump of piles design hole location;
(4) adjusting nut (7) is screwed into pre-embedded bolt (9);Then mini pile clump of piles boring positioning is oriented to hanging device and is filled It sets and hangs in foundation pit, after otic placode (8) same to pre-embedded bolt (9) is corresponding therebetween, gently set on pre-embedded bolt (9);After being installed, adjust Adjusting nut (7) makes circular horizontal bubble (4) reach device horizon effect between two parties, finally tightens fastening nut (6);
(5) drilling machine is in place, and drilling rod is drilled down by guide pipe (10).
CN201910497241.4A 2019-06-10 2019-06-10 A kind of mini pile clump of piles boring positioning guiding device and application method Pending CN110185390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910497241.4A CN110185390A (en) 2019-06-10 2019-06-10 A kind of mini pile clump of piles boring positioning guiding device and application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910497241.4A CN110185390A (en) 2019-06-10 2019-06-10 A kind of mini pile clump of piles boring positioning guiding device and application method

Publications (1)

Publication Number Publication Date
CN110185390A true CN110185390A (en) 2019-08-30

Family

ID=67721101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910497241.4A Pending CN110185390A (en) 2019-06-10 2019-06-10 A kind of mini pile clump of piles boring positioning guiding device and application method

Country Status (1)

Country Link
CN (1) CN110185390A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111827285A (en) * 2020-07-24 2020-10-27 中建四局建设发展有限公司 Perpendicularity control device for pile planting method and using method thereof
CN113338284A (en) * 2021-07-08 2021-09-03 浙江易通特种基础工程股份有限公司 Construction method for implanting large-diameter permanent steel casing into deep-water inclined bare rock

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003268767A (en) * 2002-03-13 2003-09-25 St Engineering Kk Construction method for double tube digging small diameter pile using hole excavating rod
KR100497283B1 (en) * 2004-06-05 2005-06-23 박성우 Piling method and pile connector thereof
CN103225304A (en) * 2013-04-28 2013-07-31 国电联合动力技术有限公司 Marine foundation supporting structure and construction method thereof
KR101385818B1 (en) * 2013-07-22 2014-04-28 반석기초이앤씨(주) Motor fixing device for pile vertical installation
KR101437000B1 (en) * 2013-03-26 2014-09-04 백규호 Foundation concrete and easy fixing micro-pile and its construction method
CN204510221U (en) * 2015-01-19 2015-07-29 天津港航工程有限公司 Rotary marine piling saddle
CN105464117A (en) * 2015-12-25 2016-04-06 天津港航工程有限公司 Rotary-type overwater piling guide frame and piling process for overwater pile group foundations
CN105604087A (en) * 2016-03-23 2016-05-25 国网江苏省电力公司连云港供电公司 Mini-type pile-group foundation pile with hinging head and manufacturing method thereof
CN106522226A (en) * 2016-11-18 2017-03-22 金陵科技学院 Device for assisting in vertical settlement of foundation pile
KR20170059701A (en) * 2015-11-23 2017-05-31 삼호쏘일텍(주) Apparatus for Head Setting of Micro-Pile
CN206319320U (en) * 2016-11-18 2017-07-11 天津港航工程有限公司 Case cartridge type piling saddle
CN107152027A (en) * 2017-06-22 2017-09-12 广东华尔辰海上风电工程有限责任公司 Offshore wind farm multi-column pier foundation pile sinking construction method and special leading truck
CN107642040A (en) * 2017-08-17 2018-01-30 华东交通大学 The construction method heavy stone used as an anchor of the hollow clump of piles anchorage of super-large diameter
CN207277337U (en) * 2017-06-22 2018-04-27 广东华尔辰海上风电工程有限责任公司 The special leading truck of offshore wind farm multi-column pier foundation piling construction
CN108086307A (en) * 2017-12-26 2018-05-29 中铁第四勘察设计院集团有限公司 Compound mini pile is perfused in concrete filled steel tube borehole
CN207714352U (en) * 2018-01-03 2018-08-10 海南大学 A kind of miniature clump of piles formula bored concrete pile
CN208545762U (en) * 2018-10-22 2019-02-26 北京交通大学 A kind of miniature pilework for adding carbon fibre material
CN210460499U (en) * 2019-06-10 2020-05-05 中铁五局集团建筑工程有限责任公司 Miniature stake grouser drilling location guider

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003268767A (en) * 2002-03-13 2003-09-25 St Engineering Kk Construction method for double tube digging small diameter pile using hole excavating rod
KR100497283B1 (en) * 2004-06-05 2005-06-23 박성우 Piling method and pile connector thereof
KR101437000B1 (en) * 2013-03-26 2014-09-04 백규호 Foundation concrete and easy fixing micro-pile and its construction method
CN103225304A (en) * 2013-04-28 2013-07-31 国电联合动力技术有限公司 Marine foundation supporting structure and construction method thereof
KR101385818B1 (en) * 2013-07-22 2014-04-28 반석기초이앤씨(주) Motor fixing device for pile vertical installation
CN204510221U (en) * 2015-01-19 2015-07-29 天津港航工程有限公司 Rotary marine piling saddle
KR20170059701A (en) * 2015-11-23 2017-05-31 삼호쏘일텍(주) Apparatus for Head Setting of Micro-Pile
CN105464117A (en) * 2015-12-25 2016-04-06 天津港航工程有限公司 Rotary-type overwater piling guide frame and piling process for overwater pile group foundations
CN105604087A (en) * 2016-03-23 2016-05-25 国网江苏省电力公司连云港供电公司 Mini-type pile-group foundation pile with hinging head and manufacturing method thereof
CN106522226A (en) * 2016-11-18 2017-03-22 金陵科技学院 Device for assisting in vertical settlement of foundation pile
CN206319320U (en) * 2016-11-18 2017-07-11 天津港航工程有限公司 Case cartridge type piling saddle
CN107152027A (en) * 2017-06-22 2017-09-12 广东华尔辰海上风电工程有限责任公司 Offshore wind farm multi-column pier foundation pile sinking construction method and special leading truck
CN207277337U (en) * 2017-06-22 2018-04-27 广东华尔辰海上风电工程有限责任公司 The special leading truck of offshore wind farm multi-column pier foundation piling construction
CN107642040A (en) * 2017-08-17 2018-01-30 华东交通大学 The construction method heavy stone used as an anchor of the hollow clump of piles anchorage of super-large diameter
CN108086307A (en) * 2017-12-26 2018-05-29 中铁第四勘察设计院集团有限公司 Compound mini pile is perfused in concrete filled steel tube borehole
CN207714352U (en) * 2018-01-03 2018-08-10 海南大学 A kind of miniature clump of piles formula bored concrete pile
CN208545762U (en) * 2018-10-22 2019-02-26 北京交通大学 A kind of miniature pilework for adding carbon fibre material
CN210460499U (en) * 2019-06-10 2020-05-05 中铁五局集团建筑工程有限责任公司 Miniature stake grouser drilling location guider

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
孙拥军;娄渊辉;: "PHC管桩群桩施工技术", 建筑施工, no. 08 *
黄广龙;方乾;苏荣臻;: "软土地基微型桩抗拔试验研究", 岩土工程学报, no. 11 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111827285A (en) * 2020-07-24 2020-10-27 中建四局建设发展有限公司 Perpendicularity control device for pile planting method and using method thereof
CN111827285B (en) * 2020-07-24 2022-02-25 中建四局建设发展有限公司 Perpendicularity control device for pile planting method and using method thereof
CN113338284A (en) * 2021-07-08 2021-09-03 浙江易通特种基础工程股份有限公司 Construction method for implanting large-diameter permanent steel casing into deep-water inclined bare rock

Similar Documents

Publication Publication Date Title
CN104153352B (en) Karst geology rotary-drilling bored concrete pile hole forming process
CN104747088B (en) A kind of leafy hosqe bit of cast-in-situ bored pile list waist and drilling construction method
CN104532821A (en) Extra-large karst cave bottom treatment construction method
CN108560541B (en) Rotary drilling full-casing follow-up rock face drilling construction method
CN106988302B (en) A kind of high inclination-angle competent bed rotary digging pile driving construction engineering method
CN103469817B (en) Existing subway station main structure broadening construction method
CN104694746A (en) Ion-adsorption-type rare earth in-situ leaching method and leaching system thereof
CN110185390A (en) A kind of mini pile clump of piles boring positioning guiding device and application method
CN110241818A (en) Drill-pouring pilework and its construction method
CN206308569U (en) It is a kind of to reinforce the road structure for punishing the solution cavity that underlies
CN109098661B (en) Bidirectional paired river-crossing large-vertex-angle inclined hole drilling method for river valley of hydropower station
CN106481278A (en) A kind of rotary digging drill bit
CN107841908A (en) For eliminating the road structure of the high embankment lateral variation sedimentation in high-speed railway abrupt slope
CN111456737A (en) Shaft construction method for preventing collapse in construction period under unfavorable geological conditions
CN108071110A (en) Rotary drilling rig Pile method under complex geological condition
CN106050239A (en) Construction method for retaining structure of deep and large vertical shaft in water-abundant upper-soft lower-hard stratum
CN208649807U (en) For eliminating the road structure of the high embankment lateral variation sedimentation in high-speed railway abrupt slope
CN210460499U (en) Miniature stake grouser drilling location guider
CN116607944A (en) Construction method for prefabricated mechanical vertical well of composite stratum
CN208917856U (en) For the constructing structure on aerial leakage stratum in deep hole impervious wall construction
CN104746511B (en) Quality of pile control method is dug in rotation when a kind of rich water sand bed
CN210370668U (en) Earth surface reinforcing structure for extending tunnel below existing highway
CN110295948B (en) Underground drainage hole construction process
CN209040780U (en) A kind of environmental-friendly circulation device of hardened place prospecting
CN208415238U (en) A kind of piling strtucture passing through rich water drifting sand layer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination