CN115450555B - Zipper type ultra-deep high-speed stirring drilling machine and construction method thereof - Google Patents
Zipper type ultra-deep high-speed stirring drilling machine and construction method thereof Download PDFInfo
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- CN115450555B CN115450555B CN202211191678.3A CN202211191678A CN115450555B CN 115450555 B CN115450555 B CN 115450555B CN 202211191678 A CN202211191678 A CN 202211191678A CN 115450555 B CN115450555 B CN 115450555B
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- zipper
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- 238000010276 construction Methods 0.000 title claims abstract description 64
- 238000005553 drilling Methods 0.000 title claims abstract description 61
- 238000009775 high-speed stirring Methods 0.000 title claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 41
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 239000002689 soil Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000000411 inducer Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a zipper-type ultra-deep high-speed stirring drilling machine and a construction method thereof, belonging to the technical field of pile foundation engineering construction, and comprising a chain guide wheel bracket, a meshing chain, a driving chain, a pinch roller, a meshing chain winch, an outer drill rod rotary support, an outer drill rod, a power head, a drill rod sealer, an air pipe, a guide wheel, a platform, a hexagonal joint, an inner drill rod, a slurry pipe, stirring blades, tooth tips and a deflector; the chain guide wheel bracket is welded with the platform, the guide wheel and the pinch roller are fixed on the chain guide wheel bracket through a pin shaft, and the meshed chain winch is arranged on the platform through a bolt; the outer drill rod and the inner drill rod are connected in an inserting way through a hexagonal joint, the power head is connected with the outer drill rod and transmits torque, the fluid director is welded inside the inner drill rod, and the slurry pipe and the air pipe are connected with the fluid director. The invention realizes the expansion and contraction between the outer drill rod and the inner drill rod, effectively reduces the height of drilling machine equipment, and does not need the procedure of connecting the drill rods.
Description
Technical Field
The invention relates to the technical field of pile foundation engineering construction, in particular to a zipper-type ultra-deep high-speed stirring drilling machine and a construction method thereof.
Background
The deep stirring technology is formally applied to engineering practice in the seventies of the twentieth century, and is widely applied to construction of industrial and civil buildings, subways, highways, municipal works, water conservancy, harbor channels, offshore facilities and the like. The deep cement-soil stirring pile is one method of reinforcing soft soil foundation with cement as curing agent, stirring and mixing soft soil and curing agent in deep ground via special stirring machine and slurry conveying pump, and hardening soft soil into composite foundation with high integrity, water stability and bearing capacity.
At present, the construction depth of the deep stirring drilling machine is basically less than 30m, and the construction depth of a soft soil stratum in a Zhejiang area can reach 70m at maximum, but the construction depth is deep, which tends to cause that the frame of the drilling machine is quite large and heavy. The mast height of the double-power deep-layer stirring drilling machine on the market exceeds 40m, and a drill rod is required to be connected for piles exceeding 40m, and the connection of the drill rod reduces the construction efficiency and is very difficult to operate. Therefore, the invention provides a zipper-type ultra-deep high-speed stirring drilling machine and a construction method thereof, which can reduce the equipment height and avoid the process of connecting a drill rod.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a zipper type ultra-deep high-speed stirring drilling machine and a construction method thereof, and overcomes the defects in the prior art. By adopting the driving chain, the expansion and contraction between the outer drill rod and the inner drill rod are realized, the height of drilling machine equipment is effectively reduced, and the process of connecting the drill rods is not needed.
A zipper-type ultra-deep high-speed stirring drilling machine comprises a chain guide wheel bracket, a meshing chain, a driving chain, a pinch roller, a meshing chain winch, an outer drill rod rotary support, an outer drill rod, a power head, a drill rod sealer, an air pipe, a guide wheel, a platform, a hexagonal joint, an inner drill rod, a slurry pipe, stirring blades, tooth tips and a deflector; the chain guide wheel support is welded with the platform, a chain storage guide rail is arranged in the chain guide wheel support, the guide wheel and the pinch roller are fixed on the chain guide wheel support through pin shafts, the meshed chain winch is mounted on the platform through bolts, the meshed chain winch is connected with the guide wheel through a driving chain, one end of the meshed chain is in sliding connection with the chain storage guide rail in the chain guide wheel support, the other end of the meshed chain is connected with the deflector through a rotary support, and the pinch roller and the guide wheel are both in meshed connection with the meshed chain; the platform is in rotary connection with the outer drill rod of the rotary support, the outer drill rod is in rotary connection with the inner of the rotary support of the outer drill rod, the outer drill rod is in plug connection with the inner drill rod through a hexagonal connector, a drill rod sealer is arranged between the outer drill rod and the inner drill rod, a power head is connected with a mast of a drilling machine through a sliding rail, the power head is connected with the outer drill rod and transmits torque, the inducer is welded inside the inner drill rod, an upper slurry pipe and an upper air pipe penetrate through an engagement chain and are connected with the inducer, a lower slurry pipe and a lower air pipe are connected with the inducer, and stirring blades and tooth tips are connected with the inner drill rod through welding.
Preferably, the chain strip is formed after the engagement of the engagement chains, the width of the chain strip is 250-400 mm, the thickness of the chain strip is 250-400 mm, the middle of the chain strip is of a cavity structure, the outer side of the engagement chains is provided with engagement teeth, and the length of the engagement chains is 50-80 m.
Preferably, the outer drill rod is of an outer circle inner hexagonal structure, the length of the outer drill rod is 20-35 m, the inner drill rod is of an outer hexagonal inner circular structure, and the length of the inner drill rod is 20-35 m.
Preferably, the pinch roller and the guide wheel are provided with meshing teeth.
A construction method of a zipper-type ultra-deep high-speed stirring drilling machine adopts the zipper-type ultra-deep high-speed stirring drilling machine for construction, and the concrete construction steps are as follows:
step one: preparation before construction
Leveling the site near the designed pile position, moving the zipper-type ultra-deep high-speed stirring drilling machine to the position near the designed pile position, and aligning the tooth tip to the center point of the designed pile position;
Step two: construction under drill
Firstly, starting a grouting pump and an air press, pumping slurry into a slurry pipe, pumping high-pressure air into an air inlet pipe, and occluding chain strips formed by occluding chains to provide lifting force for an inner drill rod, wherein the inner drill rod is overlapped with an outer drill rod, and stirring blades are exposed outside;
Starting a power head, driving the outer drill rod to rotate, holding the outer drill rod to move downwards, and enabling the outer drill rod to be meshed with the inner drill rod through a hexagonal connector, wherein the outer drill rod rotates to drive the inner drill rod to synchronously rotate, and at the moment, the outer drill rod, the power head and the platform simultaneously move downwards;
when the lower end of the power head is away from the ground 1 m-2 m, only the external drill rod is provided with a rotating torque, at the moment, the meshing chain winch is started, the guide wheel is driven to rotate by the meshing chain winch, the guide wheel is meshed with the meshing chain for transmission, when the two meshing chains pass through the pinch roller, the two meshing chains are tightly meshed together to form a chain strip, the chain strip pushes the internal drill rod to move downwards, and when the stirring depth is reached, the meshing winch is stopped; adjusting construction parameters according to stratum conditions in the process of tripping;
step three: lifting drill construction
Starting an engagement chain winch, reversely rotating a driving chain, enabling the engagement chain to move upwards under the engagement of a guide wheel, enabling the driving chain to be divided into two parts, enabling the two parts to respectively enter a chain storage guide rail of a chain guide wheel bracket from two sides, enabling an inner drill rod and an outer drill rod to simultaneously rotate in the process of storing the driving chain, stopping the engagement chain winch when a stirring blade reaches the lower end part of the outer drill rod, enabling a power head to clamp the outer drill rod to move upwards, enabling grouting pressure of a grouting pump to be 0.1-10.0 MPa in the process of lifting and drilling construction, enabling pressure of an air press to be 0.5-3.0 MPa, and enabling rotation speed of the stirring blade to be 5-60 r/min;
step four: completion of construction
When the stirring distance is 1-1.5 m from the ground surface, the air press is stopped, and when the tooth tip is lifted to the ground surface, the grouting pump and the power head are stopped, and the construction is completed.
Preferably, in the second step, the construction parameters are adjusted according to the stratum conditions in the process of drilling, and the specific implementation method is as follows:
When the earth layer of plain filled earth or mucky soil is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 0.1 t-1.0 t, the grouting pressure of the grouting pump is 0.1 MPa-1.0 MPa, the pressure of the air press is 0.1 MPa-0.5 MPa, and the rotation speed of the stirring blade is 40 r/min-50 r/min;
When the stratum of cohesive soil, silt soil or powdery clay is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 1.0-4.0 t, the grouting pressure of the grouting pump is 0.5-1.0 MPa, the pressure of the air press is 0.5-1.2 MPa, and the rotation speed of the stirring blade is 30-50 r/min;
When the stratum of sandy soil is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 2.0 t-5.0 t, the grouting pressure of the grouting pump is 0.5 MPa-1.5 MPa, the pressure of the air press is 0.7 MPa-1.2 MPa, and the rotation speed of the stirring blade is 20 r/min-40 r/min.
Preferably, in the third step, in the process of storing the driving chain, spraying water guns are arranged on two sides of the meshing chain winch, and the meshing chain is cleaned by adopting the spraying water guns.
Preferably, a limit switch is arranged on the inner side of the bottom of the outer drill rod in the third step, and when the stirring blade moves upwards to reach a set height from the limit switch, the meshing chain winch is stopped, and the set height range is 5-50cm.
The invention has the beneficial technical effects that:
By adopting the driving chain, the expansion and contraction between the outer drill rod and the inner drill rod are realized, the height of drilling machine equipment is effectively reduced, and the process of connecting the drill rods is not needed.
Drawings
Fig. 1 is a schematic structural view of a zipper type ultra-deep high-speed stirring drilling machine and a construction method thereof.
Fig. 2 is a schematic structural view of a zipper type ultra-deep high-speed stirring drilling machine and a platform in a construction method thereof.
Fig. 3 is a schematic structural cross-sectional view of a zipper-type ultra-deep high-speed stirring drilling machine and a chain guide wheel bracket in the construction method thereof.
The device comprises a 1-guide wheel bracket, a 2-meshing chain, a 3-driving chain, a 4-pinch roller, a 5-meshing chain winch, a 6-outer drill rod rotary support, a 7-outer drill rod, an 8-power head, a 9-drill rod sealer, a 10-air pipe, an 11-guide wheel, a 12-platform, a 13-hexagonal connector, a 14-inner drill rod, a 15-slurry pipe, 16-stirring blades, 17-tooth tips and 18-flow directors.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
example 1:
As shown in fig. 1-3, the zipper-type ultra-deep high-speed stirring drilling machine comprises a chain guide wheel bracket 1, a meshing chain 2, a driving chain 3, a pinch roller 4, a meshing chain winch 5, an outer drill rod rotary support 6, an outer drill rod 7, a power head 8, a drill rod sealer 9, an air pipe 10, a guide wheel 11, a platform 12, a hexagonal joint 13, an inner drill rod 14, a slurry pipe 15, stirring blades 16, tooth tips 17 and a deflector 18; the chain guide wheel support 1 is welded with the platform 12, a chain storage guide rail is arranged in the chain guide wheel support 1, the guide wheel 11 and the pinch roller 4 are fixed on the chain guide wheel support 1 through a pin shaft, the meshed chain winch 5 is arranged on the platform 12 through a bolt, the meshed chain winch 5 is connected with the guide wheel 11 through a driving chain 3, one end of the meshed chain 2 is in sliding connection with the chain storage guide rail in the chain guide wheel support 1, the other end of the meshed chain 2 is in supporting connection with the deflector 18 through a rotation, and the pinch roller 4 and the guide wheel 11 are both in meshed connection with the meshed chain 2; the platform 12 is in external rotary connection with the external drill rod rotary support 6, the external drill rod 7 is in internal rotary connection with the external drill rod rotary support 6, the external drill rod 7 is spliced and torque-transmitted through the hexagonal joint 13 between the external drill rod 7 and the internal drill rod 14, the drill rod sealer 9 is arranged between the external drill rod 7 and the internal drill rod 14, the power head 8 is connected with the drill mast through a sliding rail, the power head 8 is connected with the external drill rod 7 and torque-transmitted, the deflector 18 is welded inside the internal drill rod 14, the upper slurry pipe 15 and the upper air pipe 10 penetrate through the inside of the meshing chain 2 and are connected with the deflector 18, the lower slurry pipe 15 and the lower air pipe 10 are connected with the deflector 18, and the stirring blades 16 and the tooth tips 17 are connected with the internal drill rod 14 through welding.
Preferably, the interlocking chain 2 forms a chain strip after interlocking, the width of the chain strip is 250 mm-400 mm, the thickness of the chain strip is 250 mm-400 mm, the middle of the chain strip is of a cavity structure, the outer side of the interlocking chain 2 is provided with interlocking teeth, and the length of the interlocking chain 2 is 50 m-80 m.
Preferably, the outer drill rod 7 is of an outer circle inner hexagon structure, the length of the outer drill rod 7 is 20 m-35 m, the inner drill rod 14 is of an outer circle inner hexagon structure, and the length of the inner drill rod 14 is 20 m-35 m.
Preferably, the pinch roller 4 and the guide wheel 11 are provided with meshing teeth.
A construction method of a zipper-type ultra-deep high-speed stirring drilling machine adopts the zipper-type ultra-deep high-speed stirring drilling machine for construction, and the concrete construction steps are as follows:
step one: preparation before construction
Leveling the site near the designed pile position, and moving the zipper-type ultra-deep high-speed stirring drilling machine to the position near the designed pile position, wherein the tooth tip 17 is aligned to the center point of the designed pile position;
Step two: construction under drill
Firstly, starting a grouting pump and an air press, pumping slurry into a slurry pipe 15, pumping high-pressure air into an air inlet pipe 10, occluding chain strips formed by occluding chains 2, providing lifting force for an inner drill rod 14, overlapping the inner drill rod 14 with an outer drill rod 7, and exposing stirring blades 16;
Starting the power head 8, driving the outer drill bit 8 to rotate, holding the outer drill rod 7 to move downwards, wherein a hexagonal joint 13 is meshed between the outer drill rod 7 and the inner drill rod 14, and the outer drill rod 7 rotates to drive the inner drill rod 14 to synchronously rotate, so that the outer drill rod 7, the power head 8 and the platform 12 simultaneously move downwards;
When the lower end of the power head 8 is away from the ground 1 m-2 m, the downward movement is stopped, only the rotation torque is provided for the outer drill rod 7, the engagement chain winch 5 is started at the moment, the guide wheel 11 is driven by the drive chain 3 to rotate by the engagement chain winch 5, the guide wheel 11 is in meshed transmission with the engagement chains 2, when the two engagement chains 2 pass through the pinch roller 4, the two engagement chains 2 are tightly engaged together to form a chain belt, the chain belt pushes the inner drill rod 14 downward to move, and when the stirring depth is reached, the engagement winch is stopped; adjusting construction parameters according to stratum conditions in the process of tripping;
step three: lifting drill construction
Starting the occluding chain winch 5, reversely rotating the driving chain 3, enabling the occluding chain 2 to move upwards under the meshing of the guide wheels 11, enabling the driving chain 3 to be divided into two parts, enabling the two parts to enter a chain storage guide rail of the chain guide wheel bracket 1 from two sides respectively, enabling the inner drill rod 14 and the outer drill rod 7 to rotate simultaneously in the process of storing the driving chain 3, stopping the occluding chain winch 5 when the stirring blade 16 reaches the lower end part of the outer drill rod 7, enabling the power head 8 to clamp the outer drill rod 7 to move upwards, enabling grouting pressure of a grouting pump to be 0.1-10.0 MPa in the process of lifting and drilling construction, enabling pressure of an air press to be 0.5-3.0 MPa, and enabling rotation speed of the stirring blade 16 to be 5-60 r/min;
step four: completion of construction
When the stirring distance is 1-1.5 m, the air press is stopped, and when the tooth tip 17 is lifted to the ground, the grouting pump and the power head 8 are stopped, and the construction is completed.
Preferably, in the second step, the construction parameters are adjusted according to the stratum conditions in the process of drilling, and the specific implementation method is as follows:
when the earth layer of plain filled earth or mucky soil is encountered in the down drilling process, the jacking force of the driving chain 3 on the inner drill rod 14 is 0.1 t-1.0 t, the grouting pressure of the grouting pump is 0.1 MPa-1.0 MPa, the pressure of the air press is 0.1 MPa-0.5 MPa, and the rotation speed of the stirring blade 16 is 40 r/min-50 r/min;
when the stratum of cohesive soil, silt soil or powdery clay is encountered in the down drilling process, the jacking force of the driving chain 3 on the inner drill rod 14 is 1.0 t-4.0 t, the grouting pressure of the grouting pump is 0.5 MPa-1.0 MPa, the pressure of the air press is 0.5 MPa-1.2 MPa, and the rotation speed of the stirring blade 16 is 30 r/min-50 r/min;
When the stratum of sandy soil is encountered in the down drilling process, the pushing force of the driving chain 3 on the inner drill rod 14 is 2.0-5.0 t, the grouting pressure of the grouting pump is 0.5-1.5 MPa, the pressure of the air press is 0.7-1.2 MPa, and the rotation speed of the stirring blade 16 is 20-40 r/min.
Preferably, in the third step, in the process of storing the driving chain 3, spraying water guns are arranged at two sides of the meshing chain winch 5, and the meshing chain 2 is cleaned by adopting the spraying water guns.
Preferably, a limit switch is arranged on the inner side of the bottom of the outer drill rod 7 in the third step, and when the stirring blade 16 moves upwards to reach a set height, the engagement chain winch 5 is stopped, and the set height range is 5-50cm.
Example 2:
As shown in fig. 1-3, when the depth of a stirring pile is 35m, and the stirring pile is constructed below an overhead bridge with a clearance height of 25m, the diameter of the stirring pile is 700mm, and by adopting the zipper-type ultra-deep high-speed stirring drilling machine, the performance parameters of equipment are adapted and the technological construction is completed:
A zipper-type ultra-deep high-speed stirring drilling machine comprises a chain guide wheel bracket 1, a meshing chain 2, a driving chain 3, a pinch roller 4, a meshing chain winch 5, an outer drill rod rotary support 6, an outer drill rod 7, a power head 8, a drill rod sealer 9, an air pipe 10, a guide wheel 11, a platform 12, a hexagonal joint 13, an inner drill rod 14, a slurry pipe 15, stirring blades 16, tooth tips 17 and a deflector 18; the chain guide wheel support 1 is welded with the platform 12, a chain storage guide rail is arranged in the chain guide wheel support 1, the guide wheel 11 and the pinch roller 4 are fixed on the chain guide wheel support 1 through a pin shaft, the meshed chain winch 5 is arranged on the platform 12 through a bolt, the meshed chain winch 5 is connected with the guide wheel 11 through a driving chain 3, one end of the meshed chain 2 is in sliding connection with the chain storage guide rail in the chain guide wheel support 1, the other end of the meshed chain 2 is in supporting connection with the deflector 18 through a rotation, and the pinch roller 4 and the guide wheel 11 are both in meshed connection with the meshed chain 2; the platform 12 is in external rotary connection with the external drill rod rotary support 6, the external drill rod 7 is in internal rotary connection with the external drill rod rotary support 6, the external drill rod 7 is spliced and torque-transmitted through the hexagonal joint 13 between the external drill rod 7 and the internal drill rod 14, the drill rod sealer 9 is arranged between the external drill rod 7 and the internal drill rod 14, the power head 8 is connected with the drill mast through a sliding rail, the power head 8 is connected with the external drill rod 7 and torque-transmitted, the deflector 18 is welded inside the internal drill rod 14, the upper slurry pipe 15 and the upper air pipe 10 penetrate through the inside of the meshing chain 2 and are connected with the deflector 18, the lower slurry pipe 15 and the lower air pipe 10 are connected with the deflector 18, and the stirring blades 16 and the tooth tips 17 are connected with the internal drill rod 14 through welding.
Preferably, the engaging chain 2 forms a chain strip after being engaged, the width of the chain strip is 300mm, the thickness of the chain strip is 300mm, the middle of the chain strip is of a cavity structure, the outer side of the engaging chain 2 is provided with engaging teeth, and the length of the engaging chain 2 is 50m.
Preferably, the outer drill rod 7 has an outer circle and inner hexagon structure, the length of the outer drill rod 7 is 20m, the inner drill rod 14 has an outer hexagon and inner circle structure, and the length of the inner drill rod 14 is 20m.
Preferably, the pinch roller 4 and the guide wheel 11 are provided with meshing teeth.
A construction method of a zipper-type ultra-deep high-speed stirring drilling machine adopts the zipper-type ultra-deep high-speed stirring drilling machine for construction, and the concrete construction steps are as follows:
step one: preparation before construction
Leveling the site near the designed pile position, and moving the zipper-type ultra-deep high-speed stirring drilling machine to the position near the designed pile position, wherein the tooth tip 17 is aligned to the center point of the designed pile position;
Step two: construction under drill
Firstly, starting a grouting pump and an air press, pumping slurry into a slurry pipe 15, pumping high-pressure air into an air inlet pipe 10, occluding chain strips formed by occluding chains 2, providing lifting force for an inner drill rod 14, overlapping the inner drill rod 14 with an outer drill rod 7, and exposing stirring blades 16;
Starting the power head 8, driving the outer drill bit 8 to rotate, holding the outer drill rod 7 to move downwards, wherein a hexagonal joint 13 is meshed between the outer drill rod 7 and the inner drill rod 14, and the outer drill rod 7 rotates to drive the inner drill rod 14 to synchronously rotate, so that the outer drill rod 7, the power head 8 and the platform 12 simultaneously move downwards;
when the lower end of the power head 8 is at a position 1m away from the ground, the downward movement is stopped, only the external drill rod 7 is provided with a rotation torque, at the moment, the engagement chain winch 5 is started, the guide wheel 11 is driven to rotate by the drive chain 3, the guide wheel 11 is in meshed transmission with the engagement chains 2, when the two engagement chains 2 pass through the pinch roller 4, the two engagement chains 2 are tightly engaged together to form a chain strip, the chain strip pushes the internal drill rod 14 to move downwards, and when the stirring depth is reached, the engagement winch is stopped; adjusting construction parameters according to stratum conditions in the process of tripping;
step three: lifting drill construction
Starting the occluding chain winch 5, reversely rotating the driving chain 3, enabling the occluding chain 2 to move upwards under the engagement of the guide wheels 11, enabling the driving chain 3 to be divided into two parts, enabling the two parts to enter a chain storage guide rail of the chain guide wheel bracket 1 from two sides respectively, enabling the inner drill rod 14 and the outer drill rod 7 to rotate simultaneously in the process of storing the driving chain 3, stopping the occluding chain winch 5 when the stirring blades 16 reach the lower end part of the outer drill rod 7, enabling the power head 8 to clamp the outer drill rod 7 to move upwards, enabling grouting pressure of a grouting pump to be 0.5MPa, enabling pressure of an air press to be 1.0MPa, and enabling rotation speed of the stirring blades 16 to be 50r/min;
step four: completion of construction
When the stirring distance is 1.5m from the ground surface, the air press is stopped, and when the tooth tip 17 is lifted to the ground surface, the grouting pump and the power head 8 are stopped, so that the construction is completed.
Preferably, in the second step, the construction parameters are adjusted according to the stratum conditions in the process of drilling, and the specific implementation method is as follows:
When the stratum of plain filled soil or mucky soil is encountered in the down drilling process, the jacking force of the driving chain 3 on the inner drill rod 14 is 1.0t, the grouting pressure of the grouting pump is 0.1MPa, the pressure of the air press is 0.5MPa, and the rotation speed of the stirring blade 16 is 40r/min;
When the stratum of cohesive soil, silt soil or powdery clay is encountered in the down drilling process, the jacking force of the driving chain 3 on the inner drill rod 14 is 3.0t, the grouting pressure of the grouting pump is 0.5MPa, the pressure of the air press is 1.0MPa, and the rotation speed of the stirring blade 16 is 30r/min;
When the sandy soil stratum is encountered in the down drilling process, the pushing force of the driving chain 3 to the inner drill rod 14 is 5.0t, the grouting pressure of the grouting pump is 1.0MPa, the pressure of the air press is 1.2MPa, and the rotation speed of the stirring blade 16 is 25r/min.
Preferably, in the third step, in the process of storing the driving chain 3, spraying water guns are arranged at two sides of the meshing chain winch 5, and the meshing chain 2 is cleaned by adopting the spraying water guns.
Preferably, a limit switch is arranged on the inner side of the bottom of the outer drill rod 7 in the third step, and when the stirring blade 16 moves upwards to reach a set height, the engagement chain winch 5 is stopped, and the set height range is 10cm.
The invention relates to a zipper-type ultra-deep high-speed stirring drilling machine and a construction method thereof, wherein the extension and retraction between an outer drill rod 7 and an inner drill rod 14 are realized by adopting a driving chain 3, the height of drilling machine equipment is effectively reduced, and the process of adding a drill rod is not needed.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that other variations, modifications, additions and substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Claims (8)
1. The zipper-type ultra-deep high-speed stirring drilling machine is characterized by comprising a chain guide wheel bracket, a meshing chain, a driving chain, a pinch roller, a meshing chain winch, an outer drill rod rotary support, an outer drill rod, a power head, a drill rod sealer, an air pipe, a guide wheel, a platform, a hexagonal joint, an inner drill rod, a slurry pipe, stirring blades, tooth tips and a deflector; the chain guide wheel support is welded with the platform, a chain storage guide rail is arranged in the chain guide wheel support, the guide wheel and the pinch roller are fixed on the chain guide wheel support through pin shafts, the meshed chain winch is mounted on the platform through bolts, the meshed chain winch is connected with the guide wheel through a driving chain, one end of the meshed chain is in sliding connection with the chain storage guide rail in the chain guide wheel support, the other end of the meshed chain is connected with the deflector through a rotary support, and the pinch roller and the guide wheel are both in meshed connection with the meshed chain; the platform is in rotary connection with the outer drill rod of the rotary support, the outer drill rod is in rotary connection with the inner of the rotary support of the outer drill rod, the outer drill rod is in plug connection with the inner drill rod through a hexagonal connector, a drill rod sealer is arranged between the outer drill rod and the inner drill rod, a power head is connected with a mast of a drilling machine through a sliding rail, the power head is connected with the outer drill rod and transmits torque, the inducer is welded inside the inner drill rod, an upper slurry pipe and an upper air pipe penetrate through an engagement chain and are connected with the inducer, a lower slurry pipe and a lower air pipe are connected with the inducer, and stirring blades and tooth tips are connected with the inner drill rod through welding.
2. The zipper-type ultra-deep high-speed stirring drilling machine is characterized in that a zipper strip is formed after the interlocking chains are interlocked, the width of the zipper strip is 250-400 mm, the thickness of the zipper strip is 250-400 mm, the middle of the zipper strip is of a cavity structure, the outer side of the interlocking chains is provided with meshing teeth, and the length of the interlocking chains is 50-80 m.
3. The zipper-type ultra-deep high-speed stirring drilling machine is characterized in that the outer drill rod is of an outer circle and inner hexagon structure, the length of the outer drill rod is 20-35 m, the length of the inner drill rod is of an outer hexagon and inner circle structure, and the length of the inner drill rod is 20-35 m.
4. The zipper-type ultra-deep high-speed stirring drilling machine according to claim 1, wherein the pinch roller and the guide wheel are provided with meshing teeth.
5. A construction method of a zipper type ultra-deep high-speed stirring drilling machine, which is characterized in that the construction is carried out by adopting the zipper type ultra-deep high-speed stirring drilling machine according to claim 1, and the specific construction steps are as follows:
step one: preparation before construction
Leveling the site near the designed pile position, moving the zipper-type ultra-deep high-speed stirring drilling machine to the position near the designed pile position, and aligning the tooth tip to the center point of the designed pile position;
Step two: construction under drill
Firstly, starting a grouting pump and an air press, pumping slurry into a slurry pipe, pumping high-pressure air into an air inlet pipe, and occluding chain strips formed by occluding chains to provide lifting force for an inner drill rod, wherein the inner drill rod is overlapped with an outer drill rod, and stirring blades are exposed outside;
Starting a power head, driving the outer drill rod to rotate, holding the outer drill rod to move downwards, and enabling the outer drill rod to be meshed with the inner drill rod through a hexagonal connector, wherein the outer drill rod rotates to drive the inner drill rod to synchronously rotate, and at the moment, the outer drill rod, the power head and the platform simultaneously move downwards;
when the lower end of the power head is away from the ground 1 m-2 m, only the external drill rod is provided with a rotating torque, at the moment, the meshing chain winch is started, the guide wheel is driven to rotate by the meshing chain winch, the guide wheel is meshed with the meshing chain for transmission, when the two meshing chains pass through the pinch roller, the two meshing chains are tightly meshed together to form a chain strip, the chain strip pushes the internal drill rod to move downwards, and when the stirring depth is reached, the meshing winch is stopped; adjusting construction parameters according to stratum conditions in the process of tripping;
step three: lifting drill construction
Starting an engagement chain winch, reversely rotating a driving chain, enabling the engagement chain to move upwards under the engagement of a guide wheel, enabling the driving chain to be divided into two parts, enabling the two parts to respectively enter a chain storage guide rail of a chain guide wheel bracket from two sides, enabling an inner drill rod and an outer drill rod to simultaneously rotate in the process of storing the driving chain, stopping the engagement chain winch when a stirring blade reaches the lower end part of the outer drill rod, enabling a power head to clamp the outer drill rod to move upwards, enabling grouting pressure of a grouting pump to be 0.1-10.0 MPa in the process of lifting and drilling construction, enabling pressure of an air press to be 0.5-3.0 MPa, and enabling rotation speed of the stirring blade to be 5-60 r/min;
step four: completion of construction
When the stirring distance is 1-1.5 m from the ground surface, the air press is stopped, and when the tooth tip is lifted to the ground surface, the grouting pump and the power head are stopped, and the construction is completed.
6. The construction method of the zipper-type ultra-deep high-speed stirring drilling machine, according to claim 5, is characterized in that in the second step, construction parameters are adjusted according to stratum conditions in the process of drilling, and the specific implementation method is as follows:
When the earth layer of plain filled earth or mucky soil is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 0.1 t-1.0 t, the grouting pressure of the grouting pump is 0.1 MPa-1.0 MPa, the pressure of the air press is 0.1 MPa-0.5 MPa, and the rotation speed of the stirring blade is 40 r/min-50 r/min;
When the stratum of cohesive soil, silt soil or powdery clay is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 1.0-4.0 t, the grouting pressure of the grouting pump is 0.5-1.0 MPa, the pressure of the air press is 0.5-1.2 MPa, and the rotation speed of the stirring blade is 30-50 r/min;
When the stratum of sandy soil is encountered in the down drilling process, the jacking force of the driving chain on the inner drill rod is 2.0 t-5.0 t, the grouting pressure of the grouting pump is 0.5 MPa-1.5 MPa, the pressure of the air press is 0.7 MPa-1.2 MPa, and the rotation speed of the stirring blade is 20 r/min-40 r/min.
7. The construction method of the zipper-type ultra-deep high-speed stirring drilling machine, which is characterized by comprising the step three, wherein in the process of accommodating the driving chain, spraying water guns are arranged on two sides of the winch of the interlocking chain, and the interlocking chain is cleaned by adopting the spraying water guns.
8. The construction method of the zipper-type ultra-deep high-speed stirring drilling machine, which is disclosed by claim 5, is characterized in that a limit switch is arranged on the inner side of the bottom of the outer drill rod in the third step, when the stirring blade moves upwards to reach a set height, the meshing chain winch is stopped, and the set height range is 5-50cm.
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| CN111021942A (en) * | 2020-01-03 | 2020-04-17 | 福建省建科工程技术有限公司 | Small-size hole equipment that draws suitable for finite space |
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| CN111577131A (en) * | 2020-06-28 | 2020-08-25 | 北京中岩大地科技股份有限公司 | High-speed deep stirring drilling machine and construction method thereof |
| CN215859967U (en) * | 2021-08-31 | 2022-02-18 | 岳迎春 | Mast telescopic rotary drilling rig |
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| CN111021942A (en) * | 2020-01-03 | 2020-04-17 | 福建省建科工程技术有限公司 | Small-size hole equipment that draws suitable for finite space |
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| Title |
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| SM85型深层搅拌伸缩钻具的研制;陈胜全;胡志海;;探矿工程(岩土钻掘工程);20110725(第07期);全文 * |
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