CN116065613A - Dewatering well construction device - Google Patents

Dewatering well construction device Download PDF

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Publication number
CN116065613A
CN116065613A CN202211665226.4A CN202211665226A CN116065613A CN 116065613 A CN116065613 A CN 116065613A CN 202211665226 A CN202211665226 A CN 202211665226A CN 116065613 A CN116065613 A CN 116065613A
Authority
CN
China
Prior art keywords
dewatering well
drill bit
rotary
pipe
core
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
CN202211665226.4A
Other languages
Chinese (zh)
Inventor
袁利军
齐从月
周红卫
王智慧
冯磊
戚永峰
杨璐
熊亮
卢思行
常思杰
胡仁峰
张清华
邓隆威
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.)
Third Construction Co Ltd of China Construction Third Engineering Division
Original Assignee
Third Construction Co Ltd of China Construction Third Engineering Division
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 Third Construction Co Ltd of China Construction Third Engineering Division filed Critical Third Construction Co Ltd of China Construction Third Engineering Division
Priority to CN202211665226.4A priority Critical patent/CN116065613A/en
Publication of CN116065613A publication Critical patent/CN116065613A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/10—Restraining of underground water by lowering level of ground water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

Abstract

The invention discloses a dewatering well construction device which comprises an outer pipe, a drill bit, an embedded dewatering well, a rotary core and a fixed rod, wherein the drill bit is arranged on the outer pipe; a first rotary digging blade is fixed on the inner side wall of the outer tube; the drill bit is detachably fixed at the lower end of the outer tube; the embedded dewatering well comprises an inner pipe, and the inner pipe is coaxially arranged in the outer pipe; the rotary core is coaxially arranged in the inner tube, and the lower end of the rotary core is detachably connected with the drill bit. The beneficial effects of the invention are as follows: when the construction is carried out, the rotary core is driven to rotate through the driving device, the rotary core drives the drill bit to rotate so as to break soil, the excavated soil moves upwards along a gap between the inner pipe and the outer pipe and is discharged to the ground, the inner pipe descends along with the drill bit continuously, after reaching a designated position, the fixed rod is pulled away, the connection between the lower end of the rotary core and the drill bit is loosened, the outer pipe is taken out, and the inner pipe is reserved as a dewatering well, so that the main construction of the dewatering well is completed. In the process, auxiliary construction of the tower crane is not needed, and the labor investment is reduced.

Description

Dewatering well construction device
Technical Field
The invention relates to the technical field of engineering construction, in particular to a dewatering well construction device.
Background
The dewatering well construction is used in the construction process of the deep foundation pit in the basement, especially in the areas of river, lake and the like. The dewatering well can effectively reduce the basement water level of the deep foundation pit, especially the water level in the pit, and can effectively ensure the construction quality of the concrete of the construction basement and improve the construction progress because the dewatering effect of the foundation pit of the dewatering well is obvious, so that the dewatering well is an important dewatering system in the foundation pit.
In the existing dewatering well construction process, the most commonly used construction mode at present (such as China patent application No. CN 200710012638.7) mostly adopts reinforcement cage binding, reinforcement cage surface winding reinforcement mesh or nylon mesh, rotary drilling, well washing, steel reinforcement cage descending, gravel filling, melon and rice stone filter material filling and clay sealing pipe orifice, and for traditional dewatering well construction, tower crane matching is needed due to the fact that reinforcement binding and descending are involved, reinforcement cage surface winding reinforcement mesh, well washing, gravel filling, melon and rice stone filter material filling and clay sealing pipe orifice are involved, the working procedure is complex, and large engineering quantity exists.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a dewatering well construction device for solving the technical problems of complex working procedures and large engineering quantity in the existing dewatering well construction process.
In order to achieve the above purpose, the invention provides a dewatering well construction device, which comprises an outer pipe, a drill bit, an embedded dewatering well, a rotary core and a fixed rod;
a first rotary digging blade is fixed on the inner side wall of the outer tube;
the drill bit is detachably fixed at the lower end of the outer tube;
the embedded dewatering well comprises an inner pipe, and the inner pipe is coaxially arranged in the outer pipe;
the rotary core is coaxially arranged in the inner tube, the lower end of the rotary core is detachably connected with the drill bit, and the upper end of the rotary core is used for being connected with a driving device;
the fixed rod is detachably connected with the outer tube, the inner tube and the rotating core.
In some embodiments, the upper end of the outer tube is provided with a first perforation, the upper end of the inner tube is provided with a second perforation, the upper end of the rotary core is provided with a third perforation, and the fixing rod is used for being inserted into the first perforation, the second perforation and the third perforation.
In some embodiments, the drill bit comprises a rotating sleeve, a mounting plate, a plurality of cone drill bits and a second rotary cutter blade, wherein the rotating sleeve is detachably connected with the rotary core, the mounting plate is fixed on the rotating sleeve, each cone drill bit is fixed on the mounting plate, and the second rotary cutter blade is fixed on the mounting plate.
In some embodiments, the rotating sleeve is threadably coupled to the rotating core.
In some embodiments, the inner tube includes an inner layer, an outer layer, and a filter media filler.
In some embodiments, the thickness of the inner layer and the outer layer is greater than 3.5mm.
In some embodiments, an outer water filtering layer is arranged on the outer layer, and the outer water filtering layer is formed by binding and welding steel wires.
In some embodiments, an inner water filtering layer matched with the outer water filtering layer is arranged on the inner layer, and the inner water filtering layer is formed by binding and welding steel wires.
In some embodiments, the filter media filler is made of a lightweight sealing material and a heavy duty sealing material.
In some embodiments, the lightweight sealing material is cotton and the heavy duty sealing material is clay.
Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that: when the construction is carried out, the rotary core is driven to rotate through the driving device, the rotary core drives the drill bit to rotate so as to break soil, the inner pipe and the outer pipe synchronously rotate, so that the first rotary digging blade between the inner pipe and the outer pipe can rotationally dig soil, the dug soil moves upwards along a gap between the inner pipe and the outer pipe and is discharged to the ground, the inner pipe continuously descends along with the drill bit, after reaching a designated position, the fixed rod is pulled away, the connection between the lower end of the rotary core and the drill bit is loosened again, the outer pipe is taken out, and the inner pipe is reserved as a dewatering well, so that the main construction of the dewatering well is completed. The auxiliary construction of the tower crane is not needed in the process, the manual investment is reduced, meanwhile, the drill bit containing the embedded dewatering well can be prefabricated in a factory at one time, mass production is realized, meanwhile, the manual construction procedures on site are simplified, the site construction difficulty is reduced, the construction quality is improved, and the construction progress is accelerated.
Drawings
FIG. 1 is a schematic view of an embodiment of a dewatering well construction apparatus according to the present invention;
FIG. 2 is a schematic cross-sectional view of the outer tube and first rotary cutter blade of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the drill bit of FIG. 1;
FIG. 4 is a schematic view of the outer layer of the in-line dewatering well of FIG. 1;
FIG. 5 is a schematic view showing the structure of an inner layer of the in-line dewatering well in FIG. 1;
FIG. 6 is a schematic diagram of a filter media pack of the in-line dewatering well of FIG. 1;
in the figure: 1-outer tube, 2-drill bit, 21-rotary sleeve, 22-mounting plate, 23-cone drill bit, 24-second rotary digging blade, 3-embedded water lowering well, 31-inner tube, 311-inner layer, 3111-inner water filtering layer, 312-outer layer, 3121-outer water filtering layer, 313-filter material filling core, 4-rotary core, 5-fixed rod and 6-first rotary digging blade.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the invention provides a dewatering well construction device, which comprises an outer pipe 1, a drill bit 2, an embedded dewatering well 3, a rotary core 4 and a fixing rod 5.
A first rotary digging blade 6 is fixed on the inner side wall of the outer tube 1. The drill bit 2 is detachably fixed to the lower end of the outer tube 1. The embedded dewatering well 3 comprises an inner pipe 31, and the inner pipe 31 is coaxially arranged in the outer pipe 1. The rotary core 4 is coaxially arranged in the inner tube 31, the lower end of the rotary core 4 is detachably connected with the drill bit 2, and the upper end of the rotary core 4 is used for being connected with a driving device (not shown). The fixing rod 5 is detachably connected with the outer tube 1, the inner tube 31 and the rotating core 4.
During construction, the driving device drives the rotary core 4 to rotate, the rotary core 4 drives the drill bit 2 to rotate so as to break soil, the inner pipe 31 and the outer pipe 1 synchronously rotate, so that the first rotary digging blade 6 between the inner pipe 31 and the outer pipe 1 can rotationally dig and drain soil, the dug soil moves upwards along a gap between the inner pipe 31 and the outer pipe 1 and is discharged to the ground, the inner pipe 31 continuously descends along with the drill bit 2, after reaching a designated position, the fixed rod 5 is pulled out, the lower end of the rotary core 4 is released to be connected with the drill bit 2, the outer pipe 1 is taken out, and the inner pipe 31 remains as a dewatering well, so that the main construction of the dewatering well is completed. The auxiliary construction of the tower crane is not needed in the process, the manual investment is reduced, meanwhile, the drill bit containing the embedded dewatering well can be prefabricated in a factory at one time, mass production is realized, meanwhile, the manual construction procedures on site are simplified, the site construction difficulty is reduced, the construction quality is improved, and the construction progress is accelerated.
In order to specifically realize the detachable connection between the fixing rod 5 and the outer tube 1, the inner tube 31 and the rotating core 4, please refer to fig. 1, in a preferred embodiment, a first through hole is formed at the upper end of the outer tube 1, a second through hole is formed at the upper end of the inner tube 31, a third through hole is formed at the upper end of the rotating core 4, and the fixing rod 5 is used for being inserted into the first through hole, the second through hole and the third through hole, and after the construction is completed, the fixing rod 5 is pulled out.
In order to implement the function of the drill bit 2, referring to fig. 1 and 3, in a preferred embodiment, the drill bit 2 includes a rotary sleeve 21, a mounting plate 22, a plurality of cone-shaped drill bits 23, and a second rotary cutter 24, wherein the rotary sleeve 21 is detachably connected to the rotary core 4, the mounting plate 22 is fixed to the rotary sleeve 21, each cone-shaped drill bit 23 is fixed to the mounting plate 22, and the second rotary cutter 24 is fixed to the mounting plate 22. The rotary sleeve 21, the mounting plate 22 and the second rotary digging blades 24 are all cast by steel materials with the weight of more than Q235B, the rotary sleeve 21, the mounting plate 22, each cone drill bit 23 and the second rotary digging blades 24 are mutually fully welded, and the cone drill bit 23 is formed by steel materials with the weight of Q345B and is used for breaking rock and sand. The second rotary digging blade 24 is formed by butt welding two 90-degree circular blades with the rotary sleeve 21 and is used for rotary digging and pushing of soil and stones.
In order to specifically realize the detachable connection between the rotary sleeve 21 and the rotary core 4, referring to fig. 1, in a preferred embodiment, the rotary sleeve 21 is screwed to the rotary core 4, the rotary sleeve 21 and the rotary core 4 are made of Q345B steel, and the rotary sleeve 21 and the rotary core 4 are screwed to each other, and after the construction is completed, the rotary core 4 can be rotated counterclockwise to separate the rotary sleeve 21 from the rotary core 4.
In order to implement the function of the inner tube 31, referring to fig. 1, 4, 5 and 6, in a preferred embodiment, the inner tube 31 includes an inner layer 311, an outer layer 312 and a filter core 313. The thickness of the inner layer 311 and the outer layer 312 is greater than 3.5mm. The inner layer 311 and the outer layer 312 are fully welded to the rotating sleeve 21.
In order to facilitate the groundwater to permeate into the inner pipe 31, please refer to fig. 1, 4, 5 and 6, in a preferred embodiment, the diameter of the outer layer 312 is 600mm, the outer layer 312 is provided with an outer water filtering layer 3121 from 200mm at the bottom to 3m above, the outer water filtering layer 3121 is formed by binding and welding 1mmx1mm steel wires, and 200mm is left at the bottom to facilitate the connection between the upper steel wire mesh and the lower steel wire mesh. The diameter of the inner layer 311 is 400mm, the inner layer 311 is arranged to be an inner water filtering layer 3111 matched with the outer water filtering layer 3121 from the bottom 200mm to the top 3m, the inner water filtering layer 3111 is formed by binding and welding 1mmx1mm steel wires, and a round hole with the diameter of 100x500 is formed.
In order to perform the function of the filter media filling 313, referring to fig. 1, 4, 5 and 6, in a preferred embodiment, the filter media filling 313 is made of a light weight sealing material, a gravel material, a guami material, and a heavy weight sealing material. The light sealing material is cotton, the light sealing material has the capacity of expanding rainwater, and meanwhile, the weight of the whole dewatering well turning head can be reduced due to lighter weight, and the heavy sealing material is clay.
For a better understanding of the present invention, the following describes in detail the operation of the dewatering well construction apparatus provided by the present invention with reference to fig. 1 to 6: during construction, the driving device drives the rotary core 4 to rotate, the rotary core 4 drives the drill bit 2 to rotate so as to break soil, the inner pipe 31 and the outer pipe 1 synchronously rotate, so that the first rotary digging blade 6 between the inner pipe 31 and the outer pipe 1 can rotationally dig and drain soil, the dug soil moves upwards along a gap between the inner pipe 31 and the outer pipe 1 and is discharged to the ground, the inner pipe 31 continuously descends along with the drill bit 2, after reaching a designated position, the fixed rod 5 is pulled out, the rotary core 4 is rotated anticlockwise again so that the rotary sleeve 21 is separated from the rotary core 4, the outer pipe 1 is taken out, and the inner pipe 31 remains as a dewatering well, so that the main construction of the dewatering well is completed. The auxiliary construction of the tower crane is not needed in the process, the manual investment is reduced, meanwhile, the drill bit containing the embedded dewatering well can be prefabricated in a factory at one time, mass production is realized, meanwhile, the manual construction procedures on site are simplified, the site construction difficulty is reduced, the construction quality is improved, and the construction progress is accelerated.
The technical scheme provided by the invention has the beneficial effects that:
(1) The structure is simple, the auxiliary construction of the tower crane is avoided, and the manual investment is reduced;
(2) The drill bit containing the embedded dewatering well can be prefabricated in factories at one time and produced in batches;
(3) The construction process is simplified, the field construction difficulty is reduced, the construction quality is improved, and the construction progress is accelerated;
(4) The integral prefabrication forming technology of the dewatering well is adopted, and the quality of the dewatering well is controllable;
(5) The recyclable outer tube 1 and the rotary core 4 can effectively reduce the construction cost.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.

Claims (10)

1. The construction device for the dewatering well is characterized by comprising an outer pipe, a drill bit, an embedded dewatering well, a rotary core and a fixed rod;
a first rotary digging blade is fixed on the inner side wall of the outer tube;
the drill bit is detachably fixed at the lower end of the outer tube;
the embedded dewatering well comprises an inner pipe, and the inner pipe is coaxially arranged in the outer pipe;
the rotary core is coaxially arranged in the inner tube, the lower end of the rotary core is detachably connected with the drill bit, and the upper end of the rotary core is used for being connected with a driving device;
the fixed rod is detachably connected with the outer tube, the inner tube and the rotating core.
2. The dewatering well construction device according to claim 1, wherein a first perforation is formed in an upper end of the outer pipe, a second perforation is formed in an upper end of the inner pipe, a third perforation is formed in an upper end of the rotary core, and the fixing rod is inserted into the first perforation, the second perforation and the third perforation.
3. The dewatering well construction equipment of claim 1, wherein the drill bit includes a rotatable sleeve, a mounting plate, a plurality of cone drill bits, and a second rotary cutter, the rotatable sleeve being removably connected to the rotary core, the mounting plate being secured to the rotatable sleeve, each cone drill bit being secured to the mounting plate, the second rotary cutter being secured to the mounting plate.
4. A dewatering well construction equipment according to claim 3, wherein the rotating sleeve is screwed with the rotating core.
5. The dewatering well construction equipment of claim 1, wherein the inner pipe includes an inner layer, an outer layer, and a filter media core.
6. The dewatering well construction equipment of claim 5, wherein the thickness of the inner and outer layers is greater than 3.5mm.
7. The dewatering well construction device according to claim 5, wherein an outer water filtering layer is arranged on the outer layer, and the outer water filtering layer is formed by binding and welding steel wires.
8. The dewatering well construction device according to claim 7, wherein an inner water filtering layer matched with the outer water filtering layer is arranged on the inner layer, and the inner water filtering layer is formed by binding and welding steel wires.
9. The dewatering well construction equipment of claim 5, wherein the filter media core is made of a lightweight sealing material and a heavy duty sealing material.
10. The dewatering well construction equipment of claim 9, wherein the lightweight sealing material is cotton and the heavy duty sealing material is clay.
CN202211665226.4A 2022-12-23 2022-12-23 Dewatering well construction device Pending CN116065613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211665226.4A CN116065613A (en) 2022-12-23 2022-12-23 Dewatering well construction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211665226.4A CN116065613A (en) 2022-12-23 2022-12-23 Dewatering well construction device

Publications (1)

Publication Number Publication Date
CN116065613A true CN116065613A (en) 2023-05-05

Family

ID=86177930

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211665226.4A Pending CN116065613A (en) 2022-12-23 2022-12-23 Dewatering well construction device

Country Status (1)

Country Link
CN (1) CN116065613A (en)

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