CN108222837A - Rotary excavating extruding expanding drilling head, the rotary drilling rig and construction method for including it - Google Patents
Rotary excavating extruding expanding drilling head, the rotary drilling rig and construction method for including it Download PDFInfo
- Publication number
- CN108222837A CN108222837A CN201810053615.9A CN201810053615A CN108222837A CN 108222837 A CN108222837 A CN 108222837A CN 201810053615 A CN201810053615 A CN 201810053615A CN 108222837 A CN108222837 A CN 108222837A
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- rotary
- cylinder
- fixed part
- drilling
- extruding expanding
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- 238000005553 drilling Methods 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 39
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of rotary excavating extruding expanding drilling head, including：Drill main body and hydraulic system, the drill main body include cylinder, and the cylinder includes fixed part and movable part, and the fixed part is interior to be provided with frame along the axial direction of the cylinder；The hydraulic system is located in the cylinder and is set along the radial direction of the cylinder, and the hydraulic system includes hydraulic pump and the telescopic shaft being connect with the hydraulic pump, and the hydraulic pump is fixedly mounted on said frame；The movable part is connected to the outside of the fixed part by the telescopic shaft, horizontally moveable relative to the fixed part.The invention also discloses a kind of rotary drilling rig including the rotary excavating extruding expanding drilling head and a kind of construction methods.The present invention can the rotary cutting soil body and squeezed aperture；It is simple in structure, it is easy to operate；Can fast pore-creating, improve pile foundation construction quality and bearing capacity, reduce dregs discharge, energy-saving and emission-reduction reduce engineering cost, avoid that collapse hole accident occurs.
Description
Technical field
The present invention relates to engineering construction technology fields, more particularly to a kind of rotary excavating extruding expanding drilling head, include its rotation
Dig drilling machine and construction method.
Background technology
In civil construction foundation engineering, in all drilling pouring pile hole operations, rotary drilling rig fills at present in drilling
Extensive use in a variety of foundation basic constructions such as stake, diaphram wall, strengthening of foundation is noted, is primarily adapted for use in sandy soil, cohesive soil, powder
The soil layers drilling construction such as matter soil has the characteristics that pore-forming is fast, operation is light, comfortable.
But whether the rock core drill of short spiral or rotary bucket or rock stratum can only all creep into shoveling to current drilling tool,
Cannot be squeezed to the hole well progress of small-bore, can not be by soil layer dense extrusion loose around the borehole wall of hole, and it is unable to reach raising
Pile foundation quality reduces shoveling amount, reduces dregs discharge and stacks, environmental protection and soil resource, avoids the effect of environmental pollution.
Therefore, it is necessary to one kind spiral-digging pore but also to squeeze expansion aperture, and can reach raising pile foundation quality, reduce and dig
The drill bit apparatus of soil amount purpose.
Invention content
It, can rotary cutting soil the purpose of the present invention is to provide one kind based on drawbacks described above in the prior art
Body, and the rotary excavating extruding expanding drilling head in the squeezed aperture of energy.The rotary excavating extruding expanding drilling header structure of the invention is simple, easy to operate；It can be quick
Pore-forming improves pile foundation construction quality, improves the bearing capacity of pile foundation, reduces engineering cost, avoids collapse hole accident in filling process
Occur, reduce dregs discharge capacity, soil protection resource reduces environmental pollution.
Another object of the present invention is to provide a kind of rotary drilling rig for including the rotary excavating extruding expanding drilling head.
A further purpose of the present invention is to provide a kind of construction method.
Above-mentioned purpose is achieved through the following technical solutions：
According to an aspect of the present invention, a kind of rotary excavating extruding expanding drilling head provided by the invention, which is characterized in that including：It bores
Head main body and hydraulic system, the drill main body include cylinder, and the cylinder includes fixed part and movable part, the fixed part
The interior axial direction along the cylinder is provided with frame；The hydraulic system is located in the cylinder and is set along the radial direction of the cylinder
It puts, the hydraulic system includes hydraulic pump and the telescopic shaft being connect with the hydraulic pump, and the hydraulic pump is fixedly mounted on described
On frame；The movable part is connected to the outside of the fixed part by the telescopic shaft, can be horizontal relative to the fixed part
It is mobile.
In the present invention, the fixed part and the movable part are detachably connected, described when carrying out rotary digging drilling hole operation
Fixed part and the movable part form complete cylindrical tube, and device to hole well depth direction carries out rotary digging drilling hole；It is squeezed in progress
During operation, the movable part is with the fixed part from the movable part is upheld outward, and the device to hole borehole wall carries out the behaviour in squeezed aperture
Make.
Preferably, the cylinder is cylindrical tube, is made of a fixed part and two movable parts, wherein, two institutes
State the both sides that movable part is symmetrically connected to the fixed part.
Preferably, the drill main body further includes upper plate at the top of the cylinder and positioned at the cylinder body bottom
Lower plate, the lower plate are fixed at the bottom of the fixed part.
Preferably, the lower plate is fixed with the pick of multiple cutting soil bodys.It is highly preferred that the pick is welded on the cylinder
In body lower plate.Preferably, the pick and the lower plate are at an angle, facilitate the cutting soil body.
Preferably, the hydraulic pump is set as four, respectively symmetrically is fixed on the top of both sides of the frame under
Portion.
Preferably, the hydraulic system further includes operating display, shows squeezed stroke with squeezing on the operating display
Expand stress.
According to another aspect of the present invention, a kind of rotary drilling rig provided by the invention, which is characterized in that including the present invention
The rotary excavating extruding expanding drilling head and
Drilling rod is connect with the rotary excavating extruding expanding drilling head,
Oil pipe and oil return pipe are sent, is connect by the drilling rod with the hydraulic system in the rotary excavating extruding expanding drilling head, is led to
Cross send oil pipe and the oil return pipe described in the HYDRAULIC CONTROL SYSTEM send oil and oil return.
Preferably, the rotary excavating extruding expanding drilling head is connect by joint flange disk with the drilling rod.It is highly preferred that the connector
Ring flange is square knuckle ring flange.
Still another aspect according to the present invention, a kind of construction method provided by the invention, which is characterized in that using the present invention
The rotary drilling rig is constructed, and the rotary digging that this method includes multiple strokes is squeezed, wherein,
The rotary digging of each stroke is squeezed to be included the following steps：
The rotary drilling rig is put into Kong Jing by the first step, and the pick cutting soil body receives the soil body of cutting described
In cylinder, the drilling rod is above carried, the rotary excavating extruding expanding drilling head is proposed into ground, the soil body of cutting is thrown away, by the rotary digging
Extruding-enlarging aiguille is reentered into Kong Jing；
Second step, starts hydraulic system, and movable part upholds squeezed aperture outward under the driving of telescopic shaft；
Third walks, and bounce back the telescopic shaft, rotates the cylinder with the angle for being less than 360 °；
4th step repeats second step and third step operation, until squeezed to design aperture.
Preferably, in second step, the stroke that the movable part upholds squeezed aperture outward is 5cm~10cm.
Preferably, in the third step, the angle for rotating the cylinder is 60 degree, 90 degree or 120 degree.
It is highly preferred that in the third step, the angle for rotating the cylinder is 120 degree, and in the 4th step, is repeated twice
Second step and third step operation, so as to which the cylinder is had rotated 360 °.
It is squeezed that the construction method of the present invention using the multiple angles of multiple strokes carries out rotary digging so that soil around the borehole wall of hole
Body is uniformly squeezed and closely knit firm, is improved squeezed quality, be ensure that the circularity in aperture.
Advantageous effect：
Rotary excavating extruding expanding drilling header structure of the present invention is simple, easy to operate, can the rotary cutting soil body and squeezed aperture；Energy
Enough fast pore-creatings, improve pile foundation construction quality, improve the bearing capacity of pile foundation, reduce engineering cost, avoid filling process middle hole wall
The loose collapse hole accident of the soil body；Dregs discharge capacity is reduced, soil protection resource reduces environmental pollution.
The present invention uses split type drill main body, facilitates operation, when carrying out rotary digging drilling hole operation, the fixed part
Cylindrical tube is formed with the movable part, device to hole well depth direction carries out rotary digging drilling hole；When carrying out squeezed operation, the work
Dynamic portion is with the fixed part from extension, carries out squeezed aperture operation outward；The present invention using the multiple angles of multiple strokes into
Row rotary digging is squeezed so that the surrounding soil of the hole borehole wall is uniformly squeezed, closely knit firm, improves squeezed hole well surrounding soil body matter
Amount, ensure that aperture circularity；For the present invention using Hydraulic guide control, squeezed power is strong, easy to use.
Description of the drawings
Usage state diagram when Fig. 1 is the rotary digging drilling hole of rotary excavating extruding expanding drilling head of the present invention；
Usage state diagram when Fig. 2 is the squeezed aperture of rotary excavating extruding expanding drilling head of the present invention；
When Fig. 3 is rotary excavating extruding expanding drilling head rotary digging drilling hole of the present invention, the structure diagram on drill main body top；
When Fig. 4 is rotary excavating extruding expanding drilling head of the present invention squeezed aperture, the structure diagram on drill main body top.
Specific embodiment
Below in conjunction with the accompanying drawings and the specific embodiments, technical scheme of the present invention is clearly and completely described：
As shown in Figs 1-4, the present invention provides a kind of rotary excavating extruding expanding drilling head, including：Drill main body and hydraulic system, it is described
Drill main body includes cylinder 5, and the cylinder 5 includes fixed part 52 and movable part 51, set in fixed part 52 along the axial direction of cylinder 5
There is frame 7；The hydraulic system is located in cylinder 5 and is set along the radial direction of cylinder 5, and hydraulic system includes hydraulic pump and and hydraulic pressure
The telescopic shaft 6 of connection is pumped, hydraulic pump is fixedly mounted on frame 7；Movable part 51 is connected to the outer of fixed part 52 by telescopic shaft 6
Side, it is horizontally moveable relative to fixed part 52.
In the present invention, fixed part 52 and movable part 51 are detachably connected, split type setting, are carrying out rotary digging drilling hole operation
When, fixed part 52 and movable part 51 form cylindrical tube 5, and the depth direction of device to hole well 11 carries out rotary digging drilling hole；It is being squeezed
When expanding operation, movable part 51 is detached with fixed part 52, is upheld the borehole wall of extruded hole well 11 outward, is carried out squeezed aperture operation.Into
One step, cylinder 5 is cylindrical tube 5, is made of a fixed part 52 and two movable parts 51, wherein, two movable parts 51
Symmetrically it is connected to the both sides of fixed part 52.
In the present embodiment, drill main body further includes the upper plate 10 at the top of cylinder and the lower plate 9 positioned at cylinder body bottom,
Lower plate 9 is fixed at the bottom of fixed part 52.Further, lower plate 9 is fixed with the pick 8 of multiple cutting soil bodys.More into one
Step ground, pick 8 is at an angle to be welded in 5 lower plate 9 of cylinder, facilitates the cutting soil body.
In the present embodiment, hydraulic pump is set as four, respectively symmetrically is fixed on the upper and lower part of the both sides of frame 7.
Further, the hydraulic system further includes operating display (not shown), shown on the operating display squeezed stroke with
Squeezed stress.
A kind of rotary drilling rig provided by the invention, including the present invention rotary excavating extruding expanding drilling head and
Drilling rod 1 is connect with rotary excavating extruding expanding drilling head,
Oil pipe 2 and oil return pipe 3 are sent, is connect by drilling rod 1 with the hydraulic system in rotary excavating extruding expanding drilling head, passes through hydraulic system
What oil pipe 2 and oil return pipe 3 were sent in control send oil and oil return.
Further, rotary excavating extruding expanding drilling head is connect by joint flange disk 4 with drilling rod 1.It is highly preferred that the joint flange
Disk 4 is square knuckle ring flange 4.
A kind of construction method provided by the invention, rotary drilling rig using the present invention are constructed, and this method includes multiple
The rotary digging of stroke is squeezed, wherein, the rotary digging of each stroke is squeezed to be included the following steps：
Rotary drilling rig is put into hole well 11 by the first step, and pick 8 cuts the soil body, the soil block of cutting is received in cylinder 5,
Drilling rod 1 is above carried, rotary excavating extruding expanding drilling head is proposed into ground, the soil block of cutting is thrown away, rotary excavating extruding expanding drilling head is reentered into hole Jing Chu；
Second step, starts hydraulic system, and movable part 51 upholds squeezed aperture outward under the driving of telescopic shaft 6；
Third walks, and bounce back telescopic shaft 6, to be less than 360 ° of angle rotary barrel 5；
4th step repeats second step and third step operation, until squeezed to design aperture.
In the present embodiment, in second step, the stroke that movable part 51 upholds squeezed aperture outward is 5cm~10cm, described
The stroke in squeezed aperture can be calculated according to the compactness of soil property and be obtained.In the third step, cylinder 5 can rotate 60 degree, 90 degree or
120 degree, preferably rotate 120 degree.
Further, in the third step, the angle of rotary barrel 5 is 120 degree, and in the 4th step, is repeated twice the
Two steps and third step operation, so as to which the cylinder is had rotated 360 °.
In the present invention, before construction, construction section hop count is calculated according to crown height, is calculated according to selected bit diameter
Squeezed stroke, using the multiple angles of multiple strokes construction method progress rotary digging is squeezed so that the soil body around Kong Jing is uniform
It squeezes and closely knit firm, improves squeezed quality, ensure that the circularity in aperture.
Below with certain municipal works science of bridge building drilled pile, for be described in detail：The drilled pile Pile Diameter 1.5
Rice, 40 meters of stake beam, pile foundation geology are cohesive soil, and underground water is at 2 meters of below ground, selection is slightly less than the rotation of design Pile Diameter
Drill bit is dug, distance is required squeezed stroke between rotary digging drill bit and stake holes, and 5 a diameter of 1.2 meters of cylinder is selected in the present embodiment
Spiral digging machine enlarging aiguille of the present invention, crown height be 1.5 meters.Multiple construction sections are used according to the height of drill bit in the present embodiment
It constructs.
During construction, carry out in accordance with the following steps：
1. surveying and locating stake position (centre coordinate), embedding steel pile casting, wherein, steel pile casting is 2 meters long；
2. and then carry out the rotary digging drilling hole operation of the first construction section：The center of drill bit is aligned with the center of stake, drilling bore hole
Diameter is 1.2 meters, and depth is 3.2 meters of hole well 11, and drill bit then is extracted ground, and the soil block in cylinder 5 is transported and is stacked outside hole, then
Drill bit is replaced at 3.2 meters of hole depth；
3. the squeezed aperture operation of multi-angle：Start hydraulic system, up and down four hydraulic pumps for being fixed on frame 7 are same
Shi Qidong, telescopic shaft 6 drive movable part 51 to uphold outward, and squeezed aperture, the stroke in squeezed aperture can be according to the compactness of soil property
And depending on the diameter of selected drill bit, squeezed stroke is 5cm in the present embodiment；Bounce back movable part 51, and cylinder 5 resets, rotation 120
Degree；Restart hydraulic pump, 51 squeezed aperture of driving movable part, squeezed stroke is 5cm；Then bounce back movable part 51, resets, rotation
120 degree；Continue to start hydraulic pump, 51 squeezed aperture of driving movable part, squeezed stroke is 5cm；
4. according to above-mentioned steps 2, continue repeatedly above-mentioned two cycle of squeezed aperture operation so that stake holes is by original 1.2
1.5 meters of meter Bian Cheng；
5. the rotary digging drilling hole of next construction section is carried out again：Drill bit is restored to the state for the cylinder 5 that aperture is 1.2 meters, after
Continuous lower 1.2 meters of brill, takes out drill bit, throws away soil block or soil；
6. squeezed aperture again：Continue points three weeks, and carry out squeezed aperture operation to 120 degree of angle three-times-weekly, it will
Stake holes 1.2m is squeezed to 1.5m；
7. according to above-mentioned steps 2-6, creep into repeatedly, it is repeatedly squeezed, until stake bottom absolute altitude pore-forming is completed.
Shoveling 25.434m is reduced through analyzing the pile foundation boring3, shoveling slip is 36%, reduces dregs soil amount 37m3
(void side's amount), while the quality of pile foundation is improved, the bearing power increase of pile foundation, is avoided in filling process because of hole well 11
The borehole wall soil body it is loose and caused by collapse hole accident.
In conclusion the present invention rotary excavating extruding expanding drilling header structure it is simple, it is easy to operate, can fast and effective pore-forming, improve
Pile foundation construction quality reduces engineering cost, reduces shoveling amount.
The preferred embodiment of the present invention is described above in association with attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned specific embodiment is only schematical, is not restricted, those of ordinary skill in the art
Under the enlightenment of the present invention, present inventive concept and scope of the claimed protection are not being departed from, can also made very
Multi-form, these all fall within the protection scope of the present invention.
Claims (10)
1. a kind of rotary excavating extruding expanding drilling head, which is characterized in that including：Drill main body and hydraulic system,
The drill main body includes cylinder, and the cylinder includes fixed part and movable part, and the fixed part is interior along the cylinder
Axially it is provided with frame；
The hydraulic system is located in the cylinder and is set along the radial direction of the cylinder, the hydraulic system include hydraulic pump and
The telescopic shaft being connect with the hydraulic pump, the hydraulic pump are fixedly mounted on said frame；
The movable part is connected to the outside of the fixed part by the telescopic shaft, horizontal can be moved relative to the fixed part
It is dynamic.
2. rotary excavating extruding expanding drilling head as described in claim 1, which is characterized in that the fixed part and the movable part are removably
Connection, when carrying out rotary digging drilling hole operation, the fixed part and the movable part form complete cylinder, the depth side of device to hole well
To progress rotary digging drilling hole；When carrying out squeezed operation, the movable part and the fixed part are from, the movable part to overhanging
, the borehole wall of device to hole well carries out squeezed aperture operation.
3. rotary excavating extruding expanding drilling head as described in claim 1, which is characterized in that the cylinder is cylindrical tube, solid by one
Determine portion and two movable parts are formed, wherein, two movable parts are symmetrically connected to the both sides of the fixed part.
4. rotary excavating extruding expanding drilling head as described in claim 1, which is characterized in that the drill main body is further included positioned at the cylinder
The upper plate at top and the lower plate positioned at the cylinder body bottom, the lower plate is fixedly connected with the bottom of the fixed part, described
Lower plate is fixed with the pick of multiple cutting soil bodys.
5. rotary excavating extruding expanding drilling head as described in claim 1, which is characterized in that the hydraulic pump is set as four, respectively symmetrically
Ground is fixed on the upper and lower part of the both sides of the frame.
6. a kind of rotary drilling rig, which is characterized in that including：
Claim 1-5 any one of them rotary excavating extruding expanding drilling heads；And
Drilling rod is connect with the rotary excavating extruding expanding drilling head,
Oil pipe and oil return pipe are sent, is connect by the drilling rod with the hydraulic system in the rotary excavating extruding expanding drilling head, passes through institute
State send oil pipe and the oil return pipe described in HYDRAULIC CONTROL SYSTEM send oil and oil return.
7. rotary drilling rig as claimed in claim 6, which is characterized in that the rotary excavating extruding expanding drilling head passes through joint flange disk and institute
State drilling rod connection.
8. a kind of construction method, which is characterized in that constructed using the rotary drilling rig described in claim 6, this method includes
The rotary digging of multiple strokes is squeezed, wherein,
The rotary digging of each stroke is squeezed to be included the following steps：
The rotary drilling rig is put into Kong Jing, cuts the soil body, the soil body of cutting is received in cylinder, is above carried by the first step
The rotary excavating extruding expanding drilling head is proposed ground, throws away the soil body of cutting by the drilling rod, and the rotary excavating extruding expanding drilling is nose heave new
It is put into Kong Jing；
Second step, starts hydraulic system, and movable part upholds squeezed aperture outward under the driving of telescopic shaft；
Third walks, and bounce back the telescopic shaft, rotates the cylinder with the angle for being less than 360 °；
4th step repeats second step and third step operation, until squeezed to design aperture.
9. construction method as claimed in claim 8, which is characterized in that in the third step, the angle for rotating the cylinder is 60
It spends, 90 degree or 120 degree.
10. construction method as claimed in claim 9, which is characterized in that in the third step, the angle for rotating the cylinder is
120 degree, and in the 4th step, second step and third step operation are repeated twice, so as to which the cylinder is had rotated 360 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053615.9A CN108222837B (en) | 2018-01-19 | 2018-01-19 | Rotary drilling extrusion expansion drill bit, rotary drilling rig comprising same and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053615.9A CN108222837B (en) | 2018-01-19 | 2018-01-19 | Rotary drilling extrusion expansion drill bit, rotary drilling rig comprising same and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108222837A true CN108222837A (en) | 2018-06-29 |
| CN108222837B CN108222837B (en) | 2024-08-16 |
Family
ID=62668017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810053615.9A Active CN108222837B (en) | 2018-01-19 | 2018-01-19 | Rotary drilling extrusion expansion drill bit, rotary drilling rig comprising same and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108222837B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979526A (en) * | 2018-09-19 | 2018-12-11 | 王立民 | A kind of complete drilling rig |
| CN111894448A (en) * | 2020-07-28 | 2020-11-06 | 成蜀电力集团有限公司 | Portable rotary excavation equipment for tower foundation pile hole construction in mountainous and hilly areas |
| CN113445495A (en) * | 2021-06-18 | 2021-09-28 | 成都四海岩土工程有限公司 | Flat and long slide-resistant pile and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979526A (en) * | 2018-09-19 | 2018-12-11 | 王立民 | A kind of complete drilling rig |
| CN111894448A (en) * | 2020-07-28 | 2020-11-06 | 成蜀电力集团有限公司 | Portable rotary excavation equipment for tower foundation pile hole construction in mountainous and hilly areas |
| CN113445495A (en) * | 2021-06-18 | 2021-09-28 | 成都四海岩土工程有限公司 | Flat and long slide-resistant pile and construction method thereof |
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| CN108222837B (en) | 2024-08-16 |
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