CN113882380B - Air bag type slag removing device and slag removing method for sucking pile bottom sand - Google Patents
Air bag type slag removing device and slag removing method for sucking pile bottom sand Download PDFInfo
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- CN113882380B CN113882380B CN202111263577.8A CN202111263577A CN113882380B CN 113882380 B CN113882380 B CN 113882380B CN 202111263577 A CN202111263577 A CN 202111263577A CN 113882380 B CN113882380 B CN 113882380B
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- 239000004576 sand Substances 0.000 title claims abstract description 91
- 239000002893 slag Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000004575 stone Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000002002 slurry Substances 0.000 claims description 77
- 230000007246 mechanism Effects 0.000 claims description 75
- 239000011499 joint compound Substances 0.000 claims description 53
- 238000005553 drilling Methods 0.000 claims description 38
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000007667 floating Methods 0.000 abstract description 2
- 239000011799 hole material Substances 0.000 description 102
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 10
- 239000013049 sediment Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/08—Removing obstacles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides an air bag type slag removing device and an air bag type slag removing method for absorbing pile bottom sand, which belong to the technical field of building construction equipment. The invention can prevent the fine sand and stone suspended in water or the fine sand and stone in mud from floating upwards all the time through the air bag and the baffle plate with holes, so that the condition that the fine sand and stone are not cleaned can be prevented.
Description
Technical Field
The invention belongs to the technical field of building construction equipment, relates to the technology of drilling and piling equipment, and particularly relates to an air bag type slag removing device and a slag removing method for absorbing sand and stones at the bottom of a pile.
Background
The positive circulation pile hole slag removal method has the advantages of large mud consistency and good wall protection effect, and is widely adopted in construction. The working principle of the positive circulation method pile hole slag removal is as follows: the mud pump is utilized to positively circulate mud to the bottom of the hole, the sediment is punched by the upward turning force of the mud, then the sediment is sucked into the hole to form negative pressure when the sand pump works, the pressure difference between the inside and the outside of the pipe is formed due to continuous balance of the sediment suction, liquid flow is generated, and when the flow speed reaches the rated value, the mud sand and the drilling sediment at the bottom of the hole reach the ground along with the liquid flow. The bottom layer of the positive circulation method pile hole slag removal adaptation is a sandless pebble layer and a soil layer, the drilling slag is carried by slurry, the slurry, sand and stone in the pile hole are carried and cleaned by the slurry, but the positive circulation method slag removal device used in the actual drilling construction has the following defects:
1. the fine sand stone is light and is easy to suspend above the slurry, and cannot be gathered at the pile bottom to perform concentrated suction, so that the slag removal of the pile hole is not thorough.
2. The existing mechanical sand pressing and sinking device is easy to damage the pile hole wall.
Disclosure of Invention
Aiming at the problems that in the prior art, when the forward circulation method is adopted to remove the slag from the pile hole, fine sand and stones are easy to suspend above mud and cannot be gathered at the pile bottom to perform centralized suction, so that the slag removal from the pile hole is not thorough, the invention provides an air bag type slag removal device and a slag removal method for absorbing the sand and stones at the pile bottom.
The invention is to make the tiny sand particles concentrate under the air bag, namely the bottom of the pile hole, through the slurry sucking pipe to suck the tiny sand gathered at the bottom of the pile hole together with the slurry, the concrete technical scheme is as follows:
the invention discloses an air bag type slag removing device for absorbing pile bottom sand, which comprises a drilling mechanism, a slurry sucking mechanism, a porous partition plate, an air bag fixing mechanism and an air bag inflating mechanism, wherein the drilling mechanism is communicated with the slurry sucking mechanism, the air bag is connected with the slurry sucking mechanism through the air bag fixing mechanism, the porous partition plate is connected with the air bag fixing mechanism, and the air bag inflating mechanism is communicated with the air bag.
Further limited, the gasbag fixed establishment includes annular fixed plate and connection gusset, the gasbag is round along annular fixed plate periphery, annular fixed plate passes through the connection gusset and is connected with the thick liquid mechanism that inhales, foraminiferous baffle is connected with the connection gusset, just foraminiferous baffle and connection gusset all set up along annular fixed plate's radial.
Further limited, the pulp sucking mechanism comprises a pulp sucking pipe and a pulp sucking pump, the drilling mechanism is provided with a pulp sucking hole, the pulp sucking pipe is communicated with the pulp sucking hole on the drilling mechanism, the pulp sucking pump is communicated with the pulp sucking pipe, and the pulp sucking pipe is connected with the annular fixing plate through a connecting rib plate.
Further limited, the gasbag inflation mechanism includes inflator and air duct, an end and the inflator intercommunication of air duct, be provided with the air duct perforation on the annular fixed plate, the air duct is fixed on pulp suction pipe and connection gusset and passes the air duct perforation on the annular fixed plate and communicate with the gasbag.
Further limited, the air duct and the connecting rib plates are all a plurality of, and the quantity of the air duct and the connecting rib plates is the same, and the connecting rib plates are uniformly distributed along the circumference of the annular fixing plate.
Further limiting, the gasbag inflation mechanism includes cylinder, water platen, catch bar, elastic component, regulating plate, movable plate, awl thorn and a plurality of package that aerifys, cylinder fixed connection is on annular fixed plate, the one end of cylinder passes through the water platen and seals, the water platen can slide along the axial of cylinder, the inflation intracavity of gasbag is arranged in to the other end of cylinder, be provided with two regulation holes on the section of thick bamboo wall of cylinder, and two regulation holes just set up, the regulating plate passes two regulation holes and cylinder swing joint, the elastic cavity is enclosed jointly to regulating plate, cylinder and water platen, the elastic component is arranged in the elastic cavity, just the both ends of elastic component respectively with regulating plate and water platen fixed connection, the one end and the water platen fixed connection of catch bar, the other end of catch bar passes elastic component, regulating plate and the diapire of cylinder in proper order and extends to the inflation intracavity of gasbag and be connected with the movable plate, be provided with a plurality of awls on the movable plate and the opposite one side of catch bar, the awl just sets up with a plurality of the package that aerifys, and the package is arranged in the gasbag is inflated to the inflation cavity.
Further limited, gasbag inflation mechanism still includes fixed bolster and locating part, fixed bolster fixed connection is on the outer wall of cylinder, be provided with the spacing hole on the fixed bolster, the locating part passes spacing hole and is connected with the regulating plate, the hookup location of locating part and regulating plate and the hookup location of elastic component and regulating plate set up relatively.
Further limited, the gasbag inflation mechanism still includes the protection film, the protection film is arranged in the inflation chamber of gasbag, and a plurality of inflation packages set up in the protection film, the other tip of catch bar passes elastic component, regulating plate and the diapire of cylinder in proper order and extends to in the protection film and be connected with the movable plate.
The slag removal method based on the air bag type slag removal device for sucking pile bottom sand comprises the following steps of:
1) When the pile hole is drilled to the depth of slag removal, water or slurry is continuously poured into the pile hole, the inflator inflates the air bag through the air duct, the gap between the hole wall of the pile hole and the annular fixing plate is filled through the air bag, and then the air duct is closed; the air bag and the porous partition plate press the fine sand and stone suspended in the water or the slurry downwards, so that the fine sand and stone suspended in the water or the slurry is gathered at the pile bottom, the holes on the porous partition plate play a role in balancing the pressure at the bottom of the pile hole, and the slurry, sand and stone gathered at the pile bottom are centrally extracted upwards along the slurry suction holes and slurry suction pipes on the drilling mechanism through the slurry suction pump;
2) When the drilling needs to be continued after the mud, sand and stones at the pile bottom are extracted, the air bag is driven to slide downwards along the hole wall of the pile hole through the slurry sucking pipe, fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, and meanwhile, the mud, sand and stones accumulated at the pile bottom are extracted upwards in a concentrated mode through the slurry sucking pump along the slurry sucking hole and the slurry sucking pipe on the drilling mechanism; until the depth required by the pile hole is reached, and thoroughly cleaning mud, sand and stones at the bottom of the pile.
The slag removal method based on the air bag type slag removal device for sucking pile bottom sand comprises the following steps of:
1) When the pile hole is drilled to the depth of the slag removal requirement, water or slurry is continuously poured into the pile hole; before drilling, the position of the movable plate is regulated through the limiting piece, when the whole air bag type slag removal device is lowered to a position where slag removal is required, the hydraulic pressure can push the hydraulic pressure plate to move along the axial direction of the cylinder barrel, the hydraulic pressure plate drives the push rod, the movable plate and the cone thorn to puncture the inflatable bag along the axial direction of the cylinder barrel, the protective film is exploded and inflated for the air bag by gas released by the inflatable bag, gaps between the hole wall of the pile hole and the annular fixed plate are filled by the air bag, the air bag and the porous baffle plate downwards press fine sand and stone suspended in water or slurry, so that the fine sand and stone suspended in the water are gathered at the pile bottom, the holes on the porous baffle plate play a role of balancing the pressure at the bottom of the pile bottom, and mud, sand and stone gathered at the pile bottom are centrally and upwards extracted along the slurry suction hole and the slurry suction pipe on the drilling mechanism through the slurry suction pump;
2) When the drilling needs to be continued after the mud, sand and stones at the pile bottom are extracted, the air bag is driven to slide downwards along the wall of the pile hole through the slurry sucking pipe, fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, and meanwhile, the mud, sand and stones accumulated at the pile bottom are extracted upwards in a concentrated mode through the slurry sucking pump along the slurry sucking hole and the slurry sucking pipe on the drilling mechanism; until the depth required by the pile hole is reached, and thoroughly cleaning mud, sand and stones at the bottom of the pile.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to an air bag type slag removing device for absorbing pile bottom sand, which comprises a drilling mechanism, a slurry absorbing mechanism, a baffle plate with holes, an air bag fixing mechanism and an air bag inflating mechanism, wherein the air bag fixing mechanism is arranged on the bottom of the pile; injecting water or slurry into the drilled holes when the holes are drilled to a certain depth, impacting the deposited mud, sand and stone at the pile bottom through the water or slurry, suspending the deposited mud, sand and stone at the pile bottom in the water or slurry, firstly inflating the airbag through an airbag inflation mechanism, filling gaps between the hole wall of the pile hole and an airbag fixing mechanism through the airbag, and downwards pressing the fine sand and stone suspended in the water or the slurry through the airbag and the porous partition plate to enable the fine sand and stone suspended in the water to be gathered at the pile bottom, and intensively sucking the slurry through a slurry sucking mechanism to clean the mud, sand and stone at the pile bottom; the air bag and the porous partition plate can prevent fine sand and stone suspended in water or fine sand and stone in slurry from floating upwards all the time, so that the condition that the fine sand and stone are not cleaned can be caused, and the method is suitable for being used in a positive circulation pile hole slag removal method.
2. When the drilling needs to be continued, the slurry sucking mechanism drives the air bag to slide downwards along the pile hole wall, the air bag has good sliding performance, water or slurry can also play a role in lubricating the air bag, the sliding performance of the air bag is further enhanced, and scraping and damage of the air bag to the pile hole wall can be effectively avoided.
3. The air duct and the connecting rib plates are all a plurality of, and the quantity of the air duct is the same with the connecting rib plates, and a plurality of connecting rib plates are evenly distributed along the circumference of the annular fixed plate, namely, each connecting rib plate is correspondingly connected with one air duct, so that the air duct is evenly distributed along the circumference of the air bag, the air bag can be evenly inflated when the air bag is inflated, and the air bag can be effectively prevented from being broken due to uneven inflation.
4. The invention skillfully utilizes water or mud at the bottom of the pile to apply force to the water pressure plate, so that the water pressure on the water pressure plate overcomes the elasticity applied by the elastic piece to sequentially push the push rod, the moving plate and the cone puncture to move forwards, the inflatable bag is punctured, sodium azide is filled in the inflatable bag, sodium azide molecules are impacted in the process of puncturing the inflatable bag by the cone puncture, and chemical reaction occurs, and the reaction type is as follows: 2NaN3 (impact) =2na+3n2 (gas); generating a large amount of nitrogen, wherein the nitrogen can explode the protective film and fill the air bag; meanwhile, the protection film can limit the inflatable bag in a limited narrow space, and in the process of puncturing the inflatable bag by the cone, the impact effect between sodium azide molecules can be enhanced, so that the generated nitrogen amount is more; the whole working principle and the construction process are very simple and easy to operate.
5. Fixedly connected with fixed bolster on the outer wall of cylinder, be provided with spacing hole on fixed bolster, the locating part passes spacing hole and is connected with the regulating plate, can nimble position of adjusting the movable plate through the locating part, can adjust the elasticity size of elastic component through the movable plate for the hydraulic plate can be applicable to the degree of depth construction operation of different water or mud.
Drawings
FIG. 1 is a schematic structural view of an air bag type slag removing device for sucking pile bottom sand;
FIG. 2 is an isometric view of the balloon in a contracted state;
FIG. 3 is an isometric view of an airbag in an open condition;
FIG. 4 is a schematic view of an inflation mechanism;
FIG. 5 is a schematic view of the structure of an inflated packet in a burst state;
the pile breaking hammer comprises a 1-pile breaking hammer, a 2-slurry suction pipe, a 3-annular fixing plate, a 4-connecting rib plate, 5-pile holes, a 6-perforated partition plate, a 7-airbag, an 8-cylinder barrel, a 9-water pressing plate, a 10-pushing rod, an 11-spring, a 12-adjusting hole, a 13-adjusting plate, a 14-fixing support, a 15-threaded rod, a 16-moving plate, a 17-cone spike, an 18-inflating bag and a 19-protective film.
Detailed Description
The technical scheme of the present invention will be further explained with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
Example 1
Referring to fig. 1-3, the air bag type slag removing device for sucking pile bottom sand in the embodiment comprises a drilling mechanism, a slurry sucking mechanism, a partition plate 6 with holes, an air bag 7, an air bag fixing mechanism and an air bag inflating mechanism; the drilling mechanism is a pile breaking hammer 1, and a slurry suction hole is formed in the center of the pile breaking hammer 1 along the axial direction; the pulp sucking mechanism comprises a pulp sucking pipe 2 and a pulp sucking pump, the pulp sucking pump is arranged at the pulp outlet position of the pulp sucking pipe 2, meanwhile, the pulp sucking pump is communicated with the pulp sucking pipe 2, and the pulp sucking pipe 2 is also communicated with a pulp sucking hole on the pile breaking hammer 1; the air bag fixing mechanism comprises an annular fixing plate 3 and connecting rib plates 4, wherein 6 connecting rib plates 4 are arranged, each connecting rib plate 4 is arranged along the radial direction of the annular fixing plate 3, the 6 connecting rib plates 4 are uniformly distributed along the circumferential direction of the annular fixing plate 3, an included angle between the central line axes of two adjacent connecting rib plates 4 is 60 degrees, the annular fixing plate 3 is fixedly connected with the pulp suction pipe 2 through the 6 connecting rib plates 4, the air bag 7 surrounds a circle along the periphery of the annular fixing plate 3, the perforated partition plate 6 is fixedly connected with the lower end surfaces of the 6 connecting rib plates 4, the perforated partition plate 6 is arranged along the radial direction of the annular fixing plate 3, and the peripheral edge of the perforated partition plate 6 is fixedly connected with the annular fixing plate 3; the gasbag inflation mechanism includes inflator and air duct, the air duct has 6, be provided with 6 air duct mounting grooves on the inner wall of pulp suction pipe 2, all be provided with the air duct mounting groove on connecting gusset 4, be provided with 6 air duct perforation on annular fixed plate 3, and the air duct mounting groove on pulp suction pipe 2, the air duct mounting groove on connecting gusset 4 and the position one-to-one of air duct perforation on the annular fixed plate 3, the inflator is arranged in on the ground plane of stake hole upper end, an tip and the inflator intercommunication of air duct, the other tip of air duct passes pulp suction pipe 2 in proper order, connecting gusset 4 and air duct perforation and gasbag 7 intercommunication, and the air duct joint is in the air duct mounting groove on pulp suction pipe 2 and the air duct mounting groove on connecting gusset 4, correspond an air duct in every air duct mounting groove and the air duct perforation.
The slag removal method of the air bag type slag removal device for absorbing pile bottom sand comprises the following steps:
1) When the pile hole 5 is drilled to a depth of 20 meters, which is required to remove slag, filling water into the pile hole 5, opening an inflator, simultaneously inflating the airbag 7 through 6 air ducts, filling gaps between the hole wall of the pile hole and the annular fixed plate 3 through the airbag 7 along with continuous inflation of the airbag, and sealing one end of the air duct connected with the inflator after the airbag 7 is filled; the fine sand and stone suspended in the water is pressed downwards through the air bag 7 and the baffle plate 6 with holes, so that the fine sand and stone suspended in the water is gathered at the bottom of the pile hole, the holes on the baffle plate 6 with holes play the roles of balancing the pressure at the bottom of the pile hole and preventing the deformation of the bottom of the pile hole, mud, sand and stone gathered at the bottom of the pile are discharged to a mud pit along the mud suction hole and the mud suction pipe 2 on the pile breaking hammer 1 under the suction of the mud suction pump, sediment is carried out in the mud pit, and the settled mud supernatant is continuously circulated and poured into the pile hole;
2) When the mud, sand and stones at the bottom of the pile hole are cleaned and then need to be continuously drilled, the suction pipe 2 is pressed down to drive the air bag 7 to slide downwards along the hole wall of the pile hole 5, fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, meanwhile, the mud, sand and stones accumulated at the pile bottom are concentrated and upwards pumped into the sediment in the mud pit through the suction pump along the suction hole on the drilling mechanism and the suction pipe 2, and then the mud is continuously recycled; until the pile hole is drilled to the required depth, and thoroughly cleaning mud, sand and stones at the bottom of the pile hole.
Example 2
The embodiment is used for sucking the gasbag type slag removal device of the sand stone of the pile bottom, it includes drilling mechanism, slurry sucking mechanism, foraminiferous baffle 6, gasbag 7, gasbag fixing mechanism and gasbag inflation mechanism; the drilling mechanism is a rotary drilling bucket, and a slurry suction hole is formed in the central position of the rotary drilling bucket along the axial direction; the pulp sucking mechanism comprises a pulp sucking pipe 2 and a pulp sucking pump, the pulp sucking pump is arranged at the pulp outlet position of the pulp sucking pipe 2, meanwhile, the pulp sucking pump is communicated with the pulp sucking pipe 2, and the pulp sucking pipe 2 is also communicated with a pulp sucking hole on the rotary drilling bucket; the air bag fixing mechanism comprises an annular fixing plate 3 and 8 connecting rib plates 4, wherein each connecting rib plate 4 is arranged along the radial direction of the annular fixing plate 3, the 8 connecting rib plates 4 are uniformly distributed along the circumferential direction of the annular fixing plate 3, an included angle between the central line axes of two adjacent connecting rib plates 4 is 45 degrees, the annular fixing plate 3 is fixedly connected with the pulp suction pipe 2 through the 8 connecting rib plates 4, the air bag 7 surrounds a circle along the periphery of the annular fixing plate 3, the perforated baffle 6 is fixedly connected with the lower end surfaces of the 8 connecting rib plates 4, the perforated baffle 6 is arranged along the radial direction of the annular fixing plate 3, and the peripheral edge of the perforated baffle 6 is fixedly connected with the annular fixing plate 3; 8 airbag inflating mechanisms are arranged, and one airbag inflating mechanism is arranged between every two adjacent connecting rib plates 4; referring to fig. 4 to 5, the air bag inflating mechanism cylinder 8, the water pressure plate 9, the pushing rod 10, the elastic piece, the adjusting plate 13, the fixed support 14, the limiting piece, the moving plate 16, the cone 17, the plurality of inflating bags 18 and the protective film 19, wherein the elastic piece is a spring 11, and the limiting piece is a threaded rod 15; the outer wall of the cylinder body of the cylinder 8 is fixedly connected with the annular fixed plate 3, one end part of the cylinder 8 is sealed by a water pressure plate 9, the water pressure plate 9 can slide back and forth along the axial direction of the cylinder 8, a positioning clamping table is arranged on the inner wall of the cylinder body of the cylinder 8, the positioning clamping table is arranged on the outer side of the water pressure plate 9, the water pressure plate 9 is limited by the positioning clamping table to prevent the water pressure plate 9 from slipping off the cylinder 8, the other end part of the cylinder 8 passes through the capsule wall of the air bag 7 and is arranged in the inner cavity of the protective film 19, the protective film 19 is fixedly connected with the cylinder 8, the protective film 19 is arranged in the inner cavity of the air bag 7, a plurality of air charging bags 18 are arranged in the protective film 19, and sodium azide particles are arranged in the air charging bags 18; the cylinder barrel 8 is provided with two regulating holes 12, the two regulating holes 12 are arranged in a positive way, the regulating plate 13 passes through the two regulating holes 12 and is movably connected with the cylinder barrel 8, the regulating plate 13 can slide back and forth along the axial direction of the cylinder barrel 8, an elastic cavity is formed by the regulating plate 13, the cylinder barrel 8 and the hydraulic plate 9 together, the spring 11 is arranged in the elastic cavity, two end parts of the spring 11 are respectively fixedly connected with the inner side of the hydraulic plate 9 and the regulating plate 13, one end part of the push rod 10 is fixedly connected with the inner side of the book pressing plate 9, the other end of the push rod 10 sequentially passes through the middle part of the spring 11, the regulating plate 13 and the bottom of the cylinder barrel 8, extends into the inner cavity of the protective film 19 and is fixedly connected with the moving plate 16, 4 conical spines 17 are arranged on one side of the moving plate 16 opposite to the push rod 10, and the conical spines 17 are arranged in a plurality of inflatable bags 18 in a targeted way; the lower ends of the corresponding positions of the two adjusting holes 12 are respectively provided with a fixed support 14, the fixed supports 14 are fixedly connected to the outer wall of the cylinder barrel 8, limiting holes are formed in the fixed supports 14 along the axial direction of the cylinder barrel 8, the limiting holes are threaded holes, one end part of a threaded rod 15 passes through the limiting holes to be propped against the adjusting plate 13, the other end part of the threaded rod 15 is fixed through a nut, and the connection position of the threaded rod 15 and the adjusting plate 13 is opposite to the connection position of the spring 11 and the adjusting plate 13; .
The slag removal method of the air bag type slag removal device for absorbing pile bottom sand comprises the following steps:
1) When the pile hole 5 is drilled to a depth of 20 meters, which is required to remove slag, filling water into the pile hole 5;
2) Before drilling, the position of the moving plate 16 is adjusted by rotating the threaded rod 15, so that when the whole air bag type slag removing device is lowered to the depth of 20 meters, the water pressure at the height of 20 meters can push the water pressure plate 9 to move forwards by about 1 cm along the axial direction of the cylinder barrel 8, the pushing rod 10, the moving plate 16 and the cone thorn 17 are driven by the water pressure plate 9 to move forwards by about 1 cm along the axial direction of the cylinder barrel 8, the air bag 18 is punctured by the cone thorn 17, sodium azide molecules of the air bag 18 instantaneously react under the puncture and impact of the cone thorn, and the reaction is 2NaN3 (impact) =2Na+3N2 (gas); generating a large amount of nitrogen, blasting the protective film 19 through the nitrogen, filling the air bag 7, and filling gaps between the hole wall of the pile hole 5 and the annular fixed plate 3 by the air bag 7 filled with the nitrogen; the fine sand and stone suspended in the water is pressed downwards through the air bag 7 and the baffle plate 6 with holes, so that the fine sand and stone suspended in the water is gathered at the bottom of the pile hole, the holes on the baffle plate 6 with holes play the roles of balancing the pressure at the bottom of the pile hole and preventing the deformation of the bottom of the pile hole, mud, sand and stone gathered at the bottom of the pile are discharged to a mud pit along a slurry suction hole and a slurry suction pipe 2 on a rotary drilling bucket under the suction of a slurry suction pump, sediment is carried out in the mud pit, and the settled mud supernatant is continuously circulated and poured into the pile hole;
3) When the mud, sand and stones at the bottom of the pile hole are cleaned and then need to be continuously drilled, the suction pipe 2 is pressed down to drive the air bag 7 to slide downwards along the hole wall of the pile hole 5, fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, meanwhile, the mud, sand and stones accumulated at the pile bottom are concentrated and upwards pumped into the sediment in the mud pit through the suction pump along the suction hole on the drilling mechanism and the suction pipe 2, and then the mud is continuously recycled; until the pile hole is drilled to the required depth, and thoroughly cleaning mud, sand and stones at the bottom of the pile hole.
The elastic member in the above embodiment 2 may be an elastic rubber block or an elastic plastic block, and the limiting member may be a threaded rod, a pin, or the like.
Claims (9)
1. The air bag type slag removing device for sucking the sand at the bottom of the pile is characterized by comprising a drilling mechanism, a slurry sucking mechanism, a porous partition plate (6), an air bag (7), an air bag fixing mechanism and an air bag inflating mechanism, wherein the drilling mechanism is communicated with the slurry sucking mechanism, the air bag (7) is connected with the slurry sucking mechanism through the air bag fixing mechanism, the porous partition plate (6) is connected with the air bag fixing mechanism, and the air bag inflating mechanism is communicated with the air bag (7); the air bag fixing mechanism comprises an annular fixing plate (3), and the air bag (7) is wound around the periphery of the annular fixing plate (3) for one circle; the perforated partition plate (6) is arranged along the radial direction of the annular fixed plate (3);
the air bag inflating mechanism comprises a cylinder barrel (8), a water pressure plate (9), a pushing rod (10), an elastic piece, an adjusting plate (13), a moving plate (16), a cone thorn (17) and a plurality of inflating bags (18), wherein the cylinder barrel (8) is fixedly connected to an annular fixed plate (3), one end part of the cylinder barrel (8) is sealed through the water pressure plate (9), the water pressure plate (9) can slide along the axial direction of the cylinder barrel (8), the other end part of the cylinder barrel (8) is arranged in an inflating cavity of the air bag (7), two adjusting holes (12) are formed in the barrel wall of the cylinder barrel (8), the two adjusting holes (12) are just opposite to each other, the adjusting plate (13) penetrates through the two adjusting holes (12) to be movably connected with the cylinder barrel (8), the adjusting plate (13), the cylinder barrel (8) and the water pressure plate (9) enclose an elastic cavity together, the two end parts of the elastic piece are fixedly connected with the adjusting plate (13) and the water pressure plate (9) respectively, the other end part of the pushing rod (10) is connected with the air bag (7) through the bottom wall (16) of the cylinder barrel (8) in sequence, a plurality of cone spines (17) are arranged on one side, opposite to the pushing rod (10), of the moving plate (16), the cone spines (17) are opposite to a plurality of inflatable bags (18), and the inflatable bags (18) are arranged in an inflatable cavity of the air bag (7).
2. The airbag type slag removing device for sucking pile bottom sand according to claim 1, wherein the airbag fixing mechanism comprises a connecting rib plate (4), the annular fixing plate (3) is connected with the slurry sucking mechanism through the connecting rib plate (4), the perforated partition plate (6) is connected with the connecting rib plate (4), and the perforated partition plate (6) and the connecting rib plate (4) are arranged along the radial direction of the annular fixing plate (3).
3. The airbag type slag removing device for sucking pile bottom sand according to claim 2, wherein the slurry sucking mechanism comprises a slurry sucking pipe (2) and a slurry sucking pump, a slurry sucking hole is formed in the drilling mechanism, the slurry sucking pipe (2) is communicated with the slurry sucking hole in the drilling mechanism, the slurry sucking pump is communicated with the slurry sucking pipe (2), and the slurry sucking pipe (2) is connected with the annular fixing plate (3) through a connecting rib plate (4).
4. An air bag type slag removing device for sucking pile bottom sand according to claim 3, wherein the air bag inflating mechanism comprises an inflator and an air duct, one end part of the air duct is communicated with the inflator, an air duct perforation is arranged on the annular fixing plate (3), and the air duct is fixed on the slurry sucking pipe (2) and the connecting rib plate (4) and penetrates through the air duct perforation on the annular fixing plate (3) to be communicated with the air bag (7).
5. The airbag type slag removing device for sucking pile bottom sand according to claim 4, wherein the number of the air guide pipes and the number of the connecting rib plates (4) are the same, and the connecting rib plates (4) are uniformly distributed along the circumference of the annular fixing plate (3).
6. The airbag type slag removing device for sucking pile bottom sand according to claim 1, wherein the airbag inflating mechanism further comprises a fixed support (14) and a limiting piece, the fixed support (14) is fixedly connected to the outer wall of the cylinder barrel (8), a limiting hole is formed in the fixed support (14), the limiting piece penetrates through the limiting hole to be connected with the adjusting plate (13), and the connecting position of the limiting piece and the adjusting plate (13) and the connecting position of the elastic piece and the adjusting plate (13) are arranged oppositely.
7. The airbag type slag removing device for sucking pile bottom sand according to claim 6, wherein the airbag inflating mechanism further comprises a protective film (19), the protective film (19) is arranged in an inflating cavity of the airbag (7), a plurality of inflating bags (18) are arranged in the protective film (19), and the other end part of the pushing rod (10) sequentially penetrates through the elastic piece, the adjusting plate (13) and the bottom wall of the cylinder barrel (8) to extend into the protective film (19) and is connected with the moving plate (16).
8. The slag removal method based on the air bag type slag removal device for sucking pile bottom sand according to claim 5, which is characterized by comprising the following steps:
1) When the pile hole (5) is drilled to the depth of slag removal, water or slurry is continuously poured into the pile hole (5), the inflator inflates the air bag (7) through the air duct, gaps between the hole wall of the pile hole (5) and the annular fixed plate (3) are filled through the air bag (7), and then the air duct is closed; the air bag (7) and the perforated baffle (6) press down the fine sand and stone suspended in the water or the slurry, so that the fine sand and stone suspended in the water or the slurry is gathered at the pile bottom, the holes on the perforated baffle (6) play a role in balancing the pressure at the bottom of the pile hole, and the slurry, sand and stone gathered at the pile bottom are pumped up intensively along the slurry suction holes and the slurry suction pipes (2) on the drilling mechanism through the slurry suction pump;
2) When the drilling needs to be continued after the mud, sand and stones at the pile bottom are extracted, the slurry suction pipe (2) drives the air bag (7) to slide downwards along the wall of the pile hole (5), fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, and meanwhile, the mud, sand and stones accumulated at the pile bottom are extracted upwards in a concentrated way along the slurry suction hole and the slurry suction pipe (2) on the drilling mechanism through the slurry suction pump; until the depth required by the pile hole is reached, and thoroughly cleaning mud, sand and stones at the bottom of the pile.
9. The slag removal method based on the air bag type slag removal device for sucking pile bottom sand according to claim 7, which is characterized by comprising the following steps:
1) When the pile hole (5) is drilled to the depth of slag removal, water or slurry is continuously poured into the pile hole (5); before drilling, the position of the movable plate (16) is regulated through the limiting piece, when the whole air bag type slag removing device is lowered to a position where slag removal is needed, the hydraulic pressure can push the hydraulic pressure plate (9) to move along the axial direction of the cylinder barrel (8), the hydraulic pressure plate (9) drives the push rod (10), the movable plate (16) and the cone thorn (17) to puncture the inflatable bag (18) along the axial direction of the cylinder barrel (8), the protective film (19) is blasted and the air bag (7) is inflated by gas released by the inflatable bag (18), gaps between the hole wall of the pile hole (5) and the annular fixed plate (3) are filled by the air bag (7), fine sand and stones suspended in water or fine sand and stones in mud are downwards pressed by the air bag (7) and the perforated baffle (6), so that the fine sand and stones suspended in water are gathered at the bottom of the pile hole, the mud, sand and stones gathered at the bottom of the pile hole play a role of balancing pile hole, and the suction pump are pumped up along the suction pipe (2) of the suction pump;
2) When the drilling needs to be continued after the mud, sand and stones at the pile bottom are extracted, the slurry suction pipe (2) drives the air bag (7) to slide downwards along the wall of the pile hole (5), fine sand stones in water or fine sand stones in mud are pressed downwards while sliding, and meanwhile, the mud, sand and stones accumulated at the pile bottom are extracted upwards in a concentrated way along the slurry suction hole and the slurry suction pipe (2) on the drilling mechanism through the slurry suction pump; until the depth required by the pile hole is reached, and thoroughly cleaning mud, sand and stones at the bottom of the pile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111263577.8A CN113882380B (en) | 2021-10-28 | 2021-10-28 | Air bag type slag removing device and slag removing method for sucking pile bottom sand |
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| CN202111263577.8A CN113882380B (en) | 2021-10-28 | 2021-10-28 | Air bag type slag removing device and slag removing method for sucking pile bottom sand |
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| SG92818A1 (en) * | 2000-10-27 | 2002-11-19 | Gammon Skanska Ltd | A brush drill attachment for cleaning the bottom of a pile borehole for cast-in siitu concrete piles |
| CN203049585U (en) * | 2013-02-19 | 2013-07-10 | 青岛宝基利工程技术咨询有限公司 | Device for removing slurry on inner wall of steel protective drum of cast-in-situ bored pile |
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| CN113216183A (en) * | 2021-05-14 | 2021-08-06 | 中煤长江基础建设有限公司 | Hole cleaning and pouring device and method for cast-in-situ bored pile |
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| US6855261B2 (en) * | 2001-07-06 | 2005-02-15 | Kenneth J. Boutte | Method for handling and disposing of drill cuttings |
| US10961807B2 (en) * | 2018-02-12 | 2021-03-30 | Saudi Arabian Oil Company | Loss circulation drilling packer |
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|---|---|---|---|---|
| SG92818A1 (en) * | 2000-10-27 | 2002-11-19 | Gammon Skanska Ltd | A brush drill attachment for cleaning the bottom of a pile borehole for cast-in siitu concrete piles |
| CN203049585U (en) * | 2013-02-19 | 2013-07-10 | 青岛宝基利工程技术咨询有限公司 | Device for removing slurry on inner wall of steel protective drum of cast-in-situ bored pile |
| WO2021081598A1 (en) * | 2019-11-01 | 2021-05-06 | Advanced Drilling Tools Pty Ltd | Dual wall drill string sealing system |
| CN113216183A (en) * | 2021-05-14 | 2021-08-06 | 中煤长江基础建设有限公司 | Hole cleaning and pouring device and method for cast-in-situ bored pile |
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| CN113882380A (en) | 2022-01-04 |
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