CN113494097B - Sand pumping and draining equipment and method for open caisson construction of quicksand layer and clay layer - Google Patents
Sand pumping and draining equipment and method for open caisson construction of quicksand layer and clay layer Download PDFInfo
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- CN113494097B CN113494097B CN202110677268.9A CN202110677268A CN113494097B CN 113494097 B CN113494097 B CN 113494097B CN 202110677268 A CN202110677268 A CN 202110677268A CN 113494097 B CN113494097 B CN 113494097B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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Abstract
The invention discloses sand pumping and drainage equipment for open caisson construction of a quicksand layer and a clay layer, which comprises a well body, a mounting ring, a mincing device, a mud pumping device, an adjustable connecting piece, a telescopic connecting piece and a mud pump, wherein the mounting ring is arranged on the well body; the mincing device comprises a rotating seat and a reamer rod, the mud pumping device comprises a connecting cylinder, a mud pumping pipe and a motor, the adjustable connecting piece comprises a fixing rod, an adjusting rod and an adjusting nut, the telescopic connecting piece comprises a sleeve and a sliding rod which are sleeved with each other and are in sliding connection, the device is used for mincing soil bodies at the position of a cutting edge through the mincing device, the mincing device cannot mincing the soil bodies through a breaking blade, mud is pumped out of a well body through the mud pumping device and a mud pump, rapid construction of a sunk well can be conducted on a quicksand layer and a clay layer, various devices and structural members can be flexibly assembled, and accordingly the device is convenient to assemble in construction, and disassembly is conducted after construction is completed.
Description
Technical Field
The invention relates to the technical field of open caisson construction, in particular to sand pumping and drainage equipment and method for open caisson construction of a quicksand layer and a clay layer.
Background
The open caisson construction is to use a shaft-shaped structure made of reinforced concrete on the ground in advance as a support for the pit wall of a foundation pit, mechanically and manually excavate soil in the well under the protection of the well wall, and sink the structure into the soil under the action of the dead weight of the structure, namely the open caisson.
Compared with the traditional foundation pit excavation, the method has the advantages that the influence on the surrounding soil is small, and meanwhile, the phenomenon of pit wall collapse in the foundation pit excavation process can be effectively avoided.
When the construction of open caisson is carried out on quicksand layer and clay layer, it is compared with traditional earth-dredging open caisson construction and has great difference, because quicksand layer and clay layer soil property are softer and ponding is more, when artifical earth dredging, because the climber of ponding leads to the earth-dredging operation to go on difficultly, and engineering construction's speed is slower.
When the open caisson is constructed at the positions of the quicksand layer and the clay layer, the soil body at the edge foot position of the well body is impacted to form slurry through a high-pressure water gun, and then the slurry is pumped out through a slurry pump, so that the purpose of sinking the open caisson is achieved.
However, when the method is carried out, the impact force of the soil body is carried out only by the high-pressure water gun, so that the construction speed is slower.
Disclosure of Invention
In order to solve the problems, the invention provides sand pumping and drainage equipment and a sand pumping and drainage method for open caisson construction of a quicksand layer and a clay layer.
The sand pumping and draining equipment for open caisson construction of the quicksand layer and the clay layer comprises a well body, wherein a cutting edge is fixedly connected to the bottom of the well body, an annular butt strap is fixedly connected to the lower portion of the inner wall of the well body, and water spraying pipelines are uniformly arranged on the inner circumference of an integrated structure of the cutting edge and the well body; the mounting ring is arranged on the upper surface of the access plate, and an annular rack is fixedly connected with the inner ring of the mounting ring;
the mincing device comprises a rotary seat and a reamer rod; the rotary seat is rotationally connected with the inner ring of the mounting ring, a plurality of the rotary seat is uniformly arranged around the axis circumference of the mounting ring, the reamer rod is rotationally connected in the rotary seat, the top of the reamer rod is fixedly connected with a gear meshed with the rack, the circumference of the bottom of the reamer rod is uniformly fixedly connected with a reamer blade, and the positions of the reamer blade and the cutting edge correspond to each other;
the upper circumference of the mud pumping device is uniformly fixedly connected with the adjustable connecting piece, the other end of the adjustable connecting piece is connected with the mounting ring, and the mud pumping device comprises a connecting cylinder, a mud pumping pipe and a motor; the inside of the connecting cylinder is coaxially provided with a connecting pipe, the circumference of the connecting pipe is uniformly fixedly connected with a fixed pipe, the head of each fixed pipe is fixedly connected with a side plate of the connecting cylinder, the top of the mud pumping pipe is rotationally connected in the connecting pipe, the mud pumping pipe is rotationally connected with a bottom plate of the connecting cylinder, the circumference of the bottom of the mud pumping pipe is uniformly fixedly connected with a crushing blade, the crushing blade is positioned below the hinge blade, the upper surface of a top plate of the connecting cylinder is fixedly connected with a waterproof cover, the motor is fixedly connected in the waterproof cover, the bottom of an output shaft of the motor is fixedly connected with a rotating column, the rotating column is rotationally connected with the top plate of the connecting cylinder, the bottom of the rotating column is rotationally connected in the connecting pipe, a supporting rod is uniformly fixedly connected between the bottom of the rotating column and the top of the mud pumping pipe, a conversion bin is fixedly connected with the top of the waterproof cover through a pipeline, and a joint pipe is fixedly connected between the fixed pipe and the conversion bin;
the telescopic connecting piece is connected between the swivel base and the mud pumping pipe;
the mud pump is arranged outside the well body, the mud suction pipe of the mud pump is connected with the joint pipe through a flange, and the mud discharge pipe of the mud pump is connected with an external mud tank.
Further, the circumference evenly is equipped with the fixed orifices that runs through on the strap, the lower surface rigid coupling of collar has the dead screw that corresponds with the fixed orifices, the dead screw inserts in the fixed orifices that corresponds, has the fixation nut on the dead screw of strap below.
Further, an annular sliding groove is formed in the inner ring of the access board, a sliding block which is in sliding connection with the sliding groove is fixedly connected to the outer side of the swivel base, annular track grooves are formed in the upper side face and the lower side face of the access board, L-shaped support plates are symmetrically and fixedly connected to the upper side and the lower side of the swivel base, lifting screws corresponding to the track grooves are meshed on the support plates, and one side, close to the track grooves, of each lifting screw is rotationally connected with a guide rotating wheel.
Further, the head fixedly connected with extension board of adjustable connecting piece, rotate on the extension board and be connected with the axostylus axostyle, the bottom rigid coupling of axostylus axostyle has the limiting plate, the bottom rigid coupling of limiting plate has connecting screw, connecting screw hole that corresponds with connecting screw has been seted up to the upper surface of collar.
Further, the adjustable connecting piece comprises a fixed rod, an adjusting rod and an adjusting nut; one end and the waterproof aircraft bonnet fixed connection of dead lever, offered the through-hole that supplies the pipeline to pass through on the dead lever, the cavity has been seted up to the other end of dead lever, the guide way has evenly been seted up to the inner wall circumference of cavity, the one end sliding connection of adjusting the pole is in the cavity, the rigid coupling has the guide block with track groove sliding connection on the adjusting lever, be equipped with the screw groove on the adjusting lever, adjusting nut and screw groove meshing, adjusting nut outside still rigid coupling has the cover of holding, the cover of holding is connected with the outer wall rotation of dead lever.
Further, the telescopic connecting piece comprises a sleeve and a slide bar which are sleeved with each other and are in sliding connection, connecting studs are fixedly connected at two ends of the telescopic connecting piece, a spring is fixedly connected between the head of the slide bar and the bottom of an inner cavity of the sleeve, a limiting groove is uniformly formed in the circumference of an outer ring of the slide bar, a limiting block which is in sliding connection with the limiting groove is fixedly connected in the inner cavity of the sleeve, and a connecting thread sleeve corresponding to the connecting studs is fixedly connected on the outer side of the swivel base and the outer wall of the mud pumping pipe.
A sand pumping and draining method for open caisson construction of a quicksand layer and a clay layer comprises the following steps:
s1: firstly, excavating an auxiliary pit B on a soil body A at a construction position, pouring an annular plain concrete backing plate C at the bottom of the auxiliary pit B, excavating a containing groove D corresponding to a crushing blade at the bottom of the auxiliary pit B, and hoisting a well body on the backing plate C;
s2: assembling equipment;
s3: after equipment is assembled, pressurized water is pumped from the top of the water spraying pipeline, and the motor and the slurry pump are started, so that construction can be performed.
Preferably, the pit wall of the auxiliary pit B is obliquely arranged, and the included angle between the pit wall and the horizontal plane is 30-45 degrees.
The device has the advantages that in the using process, the soil body A is minced at the position of the cutting edge through the mincing device, and the soil body A at the position of the cutting edge forms slurry in cooperation with high-pressure water flow sprayed from the water spraying pipeline, so that the well body can be smoothly settled, the mud pumping device not only can pump the slurry, but also can crush the soil body A which cannot be minced by the mincing device through the crushing blade, and is mixed with water flowing out of the water spraying pipeline and overflow water generated in the construction process of the open caisson to form slurry, the slurry is pumped out of the well body integrally through the slurry pump, the device can be used for carrying out rapid construction of the open caisson at the positions of a quicksand layer and a clay layer, and various devices and structural members can be flexibly assembled, so that the device is convenient to disassemble after construction is completed.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the specific embodiments will be briefly described below, it being obvious that the drawings in the following description are only some examples of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1: the invention discloses a structural schematic diagram of sand pumping and drainage equipment for open caisson construction of a quicksand layer and a clay layer;
fig. 2: an enlarged view of a portion at I shown in FIG. 1;
fig. 3: an enlarged view of a portion at ii shown in fig. 1;
fig. 4: an enlarged view of a portion at III shown in FIG. 1;
fig. 5: the structure schematic diagram of the mud pumping device is shown in the specification;
fig. 6: the structure schematic diagram of the butt strap is shown in the specification;
fig. 7: the structure of the mounting ring is schematically shown;
fig. 8: the structure schematic diagram of the mincing device is provided by the invention;
fig. 9: the structure of the sliding rod is schematically shown;
fig. 10: the structure of the sleeve is schematically shown;
fig. 11: the invention discloses a construction schematic diagram of sand pumping and drainage equipment for open caisson construction of a quicksand layer and a clay layer.
The reference numerals are as follows:
a-soil body A, B-auxiliary pit B, C-backing plate C, D-holding tank D;
1-a well body, 11-a blade foot, 12-a butt strap and 13-a water spraying pipeline;
2-mounting rings, 21-racks, 22-fixing holes, 23-fixing screws and 24-fixing nuts;
3-mincing device, 31-swivel mount, 32-reamer bar, 33-gear, 34-reamer blade, 35-chute, 36-slider, 37-track groove, 38-support plate, 39-lifting screw, 310-guiding runner;
4-mud pumping device, 41-connecting cylinder, 42-mud pumping pipe, 43-motor, 44-connecting pipe, 45-fixed pipe, 46-crushing blade, 47-waterproof hood, 48-rotating column, 49-supporting rod, 410-converting bin, 411-pipeline and 412-joint pipe;
the device comprises a 5-adjustable connecting piece, a 51-supporting plate, a 52-shaft rod, a 53-limiting plate, a 54-connecting screw rod, a 55-connecting screw hole, a 56-fixing rod, a 57-adjusting rod, a 58-adjusting nut, a 59-through hole, a 510-cavity, a 511-guide groove, a 512-guide block, a 513-thread groove and a 514-holding sleeve;
6-telescopic connecting pieces, 61-sleeves, 62-sliding rods, 63-connecting studs, 64-springs, 65-limiting grooves, 66-limiting blocks and 67-connecting threaded sleeves;
7-slurry pump, 71-mud suction pipe, 72-flange and 73-mud discharge pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-11, sand pumping and drainage equipment for open caisson construction of a quicksand layer and a clay layer comprises a well body 1, wherein a cutting edge 11 is fixedly connected to the bottom of the well body 1, an annular butt strap 12 is fixedly connected to the lower portion of the inner wall of the well body 1, a water spraying pipeline 13 is uniformly arranged on the inner circumference of an integral structure of the cutting edge 11 and the well body 1, and the sand pumping and drainage equipment also comprises a mounting ring 2, a mincing device 3, a mud pumping device 4, an adjustable connecting piece 5, a telescopic connecting piece 6 and a mud pump 7; the mounting ring 2 is arranged on the upper surface of the access plate 12, and an annular rack 21 is fixedly connected with the inner ring of the mounting ring 2;
the mincing device 3 comprises a rotary seat 31 and a reamer rod 32; the rotary seat 31 is rotationally connected with the inner ring of the mounting ring 2, a plurality of reamer rods 32 are uniformly arranged around the circumference of the axis of the mounting ring 2, the reamer rods 32 are rotationally connected in the rotary seat 31, a gear 33 meshed with the rack 21 is fixedly connected to the top of each reamer rod 32, a reamer blade 34 is uniformly fixedly connected to the circumference of the bottom of each reamer rod 32, and the positions of the reamer blades 34 correspond to the positions of the cutting edge 11;
the circumference of the upper part of the mud pumping device 4 is uniformly fixedly connected with an adjustable connecting piece 5, the other end of the adjustable connecting piece 5 is connected with the mounting ring 2, and the mud pumping device 4 comprises a connecting cylinder 41, a mud pumping pipe 42 and a motor 43; the inside of the connecting cylinder 41 is coaxially provided with a connecting pipe 44, a fixed pipe 45 is uniformly fixedly connected in the circumferential direction of the connecting pipe 44, the head of each fixed pipe 45 is fixedly connected with a side plate of the connecting cylinder 41, the top of the mud pumping pipe 42 is rotationally connected in the connecting pipe 44, the mud pumping pipe 42 is rotationally connected with a bottom plate of the connecting cylinder 41, the circumference of the bottom of the mud pumping pipe 42 is uniformly fixedly connected with a crushing blade 46, the crushing blade 46 is positioned below the hinge blade 34, the upper surface of a top plate of the connecting cylinder 41 is fixedly connected with a waterproof hood 47, a motor 43 is fixedly connected in the waterproof hood 47, the bottom of an output shaft of the motor 43 is fixedly connected with a rotary column 48, the rotary column 48 is rotationally connected with the top plate of the connecting cylinder 41, the bottom of the rotary column 48 is rotationally connected in the connecting pipe 44, a strut 49 is uniformly fixedly connected between the bottom of the rotary column 48 and the top of the mud pumping pipe 42, the top of the waterproof hood 47 is fixedly connected with a conversion bin 410, each fixed pipe 45 is connected with the conversion bin 410 through a pipeline 411, and the top of the conversion bin 410 is fixedly connected with a joint pipe 412;
the telescopic connecting piece 6 is connected between the swivel mount 31 and the mud pumping pipe 42;
the mud pump 7 is arranged outside the well body 1, the mud suction pipe 71 of the mud pump 7 is connected with the joint pipe 412 through the flange 72, and the mud discharge pipe 73 of the mud pump 7 is connected with an external sludge pool.
Preferably, the circumference of the access plate 12 is uniformly provided with through fixing holes 22, the lower surface of the mounting ring 2 is fixedly connected with fixing screws 23 corresponding to the fixing holes 22, the fixing screws 23 are inserted into the corresponding fixing holes 22, and the fixing nuts 24 are meshed with the fixing screws 23 below the access plate 12.
Preferably, an annular sliding groove 35 is formed in the inner ring of the access plate 12, a sliding block 36 in sliding connection with the sliding groove 35 is fixedly connected to the outer side of the swivel mount 31, annular track grooves 37 are formed in the upper side surface and the lower side surface of the access plate 12, L-shaped support plates 38 are symmetrically and fixedly connected to the upper side and the lower side of the swivel mount 31, lifting screws 39 corresponding to the track grooves 37 are meshed on the support plates 38, and one side, close to the track grooves 37, of the lifting screws 39 is rotatably connected with a guide rotating wheel 310.
Preferably, the head of the adjustable connecting piece 5 is fixedly connected with a support plate 51, the support plate 51 is rotationally connected with a shaft lever 52, the bottom of the shaft lever 52 is fixedly connected with a limiting plate 53, the bottom of the limiting plate 53 is fixedly connected with a connecting screw 54, and the upper surface of the mounting ring 2 is provided with a connecting screw hole 55 corresponding to the connecting screw 54.
Preferably, the adjustable connection 5 comprises a fixed rod 56, an adjusting rod 57 and an adjusting nut 58; one end of the fixed rod 56 is fixedly connected with the waterproof hood 47, a through hole 59 for the pipeline 411 to pass through is formed in the fixed rod 56, a cavity 510 is formed in the other end of the fixed rod 56, guide grooves 511 are uniformly formed in the circumference of the inner wall of the cavity 510, one end of the adjusting rod 57 is slidably connected in the cavity 510, a guide block 512 slidably connected with the track groove 37 is fixedly connected to the adjusting rod 57, a thread groove 513 is formed in the adjusting rod 57, an adjusting nut 58 is meshed with the thread groove 513, a holding sleeve 514 is fixedly connected to the outer portion of the adjusting nut 58, and the holding sleeve 514 is rotatably connected with the outer wall of the fixed rod 56.
Preferably, the telescopic connecting piece 6 comprises a sleeve 61 and a slide bar 62 which are sleeved with each other and are in sliding connection, connecting studs 63 are fixedly connected at two ends of the telescopic connecting piece 6, a spring 64 is fixedly connected between the head of the slide bar 62 and the bottom of the inner cavity of the sleeve 61, a limit groove 65 is uniformly formed in the circumference of the outer ring of the slide bar 62, a limit block 66 which is in sliding connection with the limit groove 65 is fixedly connected in the inner cavity of the sleeve 61, and a connecting thread sleeve 67 corresponding to the connecting studs 63 is fixedly connected on the outer side of the rotary seat 31 and the outer wall of the mud pumping pipe 42.
A sand pumping and draining method for open caisson construction of a quicksand layer and a clay layer comprises the following steps:
s1: firstly, excavating an auxiliary pit B on a soil body A at a construction position, pouring an annular plain concrete backing plate C at the bottom of the auxiliary pit B, excavating a containing groove D corresponding to a crushing blade 46 at the bottom of the auxiliary pit B, and hoisting a well body 1 on the backing plate C;
s2: assembling equipment;
s3: after the equipment is assembled, pressurized water is pumped from the top of the water spraying pipeline 13, and the motor 43 and the slurry pump 7 are started, so that construction can be performed.
Preferably, the pit wall of the auxiliary pit B is obliquely arranged, and the included angle between the pit wall and the horizontal plane is 30-45 degrees.
One embodiment of the invention is as follows:
(1) Firstly, excavating an auxiliary pit B on a soil body A at a construction position, excavating the auxiliary pit B to remove hardened soil on the surface layer of the construction position, exposing the soil of a quicksand layer and a clay layer, obliquely arranging the pit wall of the auxiliary pit B, wherein the inclination angle of the pit wall of the auxiliary pit B is 30-45 degrees, the phenomenon of pit wall collapse can be reduced by the inclined pit wall of the auxiliary pit B, after the auxiliary pit B is excavated, pouring an annular plain concrete backing plate C at the pit bottom, excavating a containing groove D at the pit bottom, and then hoisting the well body 1 on the backing plate C.
(2) Then, equipment is assembled, and the annular butt strap 12 is integrally poured at the lower part of the inner wall of the well body 1, wherein the butt strap 12 can be used as a base for equipment assembly, and meanwhile, the butt strap 12 can be used for placing concrete plates for sealing the bottom of the open caisson after the open caisson construction is completed.
Assembling the mounting ring 2: the fixing screws 23 are first inserted into the corresponding fixing holes 22, and then the fixing nuts 24 are screwed onto the respective fixing screws 23 below the access plate 12, so that the mounting ring 2 is fixed.
Assembly of the mincing device 3: the rotary seat 31 is connected to the inner ring of the access plate 12 through the cooperation of the sliding block 36 and the sliding groove 35, and then each lifting screw 39 is screwed to enable the guide rotating wheel 310 to enter the corresponding track groove 37, at this time, each gear 33 is meshed with the toothed plate, and the mincing device 3 is connected to the inner ring of the access plate 12 in a sliding manner.
Assembling the mud pumping device 4: when the holding sleeve 514 rotates, the adjusting nut 58 is driven to rotate, as the adjusting rod 57 is limited by the cooperation of the guide block 512 and the guide groove 511, namely, the adjusting rod 57 can only translate along the axial direction of the adjusting rod 57, the adjusting nut 58 is meshed with the threaded groove 513 on the adjusting rod 57, the axial positions of the holding sleeve 514 and the adjusting nut 58 cannot be changed, when the holding sleeve 514 and the adjusting nut 58 rotate, the adjusting rod 57 moves along the axial direction of the holding sleeve 514, so that the length of the adjustable connecting piece 5 can be adjusted, each connecting screw 54 is aligned with the corresponding connecting screw hole 55, and the rotating shaft rod 52, the limiting handle and the integral structure of the connecting screw rod 54 enable the connecting screw rod 54 to enter the corresponding connecting screw hole 55, thereby realizing the installation and fixation of the mud pumping device 4, and the installation height of the mud pumping device 4 is determined by the setting of the limiting plate 53, so that the assembly of the follow-up telescopic connecting piece 6 is convenient.
Assembly of the telescopic connection 6: due to the arrangement of the limiting plate 53, the connecting thread sleeve 67 on the swivel base 31 is identical to the connecting thread sleeve 67 on the mud pumping pipe 42 in height, so that the telescopic connecting piece 6 can be connected between the swivel base 31 and the mud pumping pipe 42 through the cooperation of the connecting stud 63 and the connecting thread sleeve 67.
The mud pump 7 is arranged on the soil body A outside the well body 1, the mud suction pipe 71 is connected with the joint pipe 412 through the connecting flange 72, and the head part of the mud discharge pipe 73 extends into an external mud pool.
Through the above process, the equipment can be assembled.
(3) After equipment is assembled, the backing plate C is knocked out, open caisson construction can be carried out, plain concrete is of a structure made of concrete without ribs or stress steel bars, so that the plain concrete is convenient to knock out before construction, after the backing plate C is knocked out, the well body 1 and equipment assembled in the well body are lowered, the crushing blades 46 initially fall into the accommodating groove D, and the crushing blades 46 can be prevented from being crushed initially.
During construction, the motor 43 and the slurry pump 7 are started, pressurized water flows are introduced into the water injection pipelines 13, and the pressurized water flows can be introduced through the high-pressure water gun.
The motor 43 drives the rotary column 48, the supporting rod 49 and the mud pumping pipe 42 to rotate in an integral structure during operation, the mud pumping pipe 42 drives the mincing device 3 to revolve around the axis of the mud pumping pipe 42 through the telescopic connecting piece 6, and the reamer rod 32 rotates around the axis due to the cooperation of the gear 33 and the rack 21, so that the reamer rod 32 and the reamer blade 34 revolve and rotate simultaneously, the reamer blade 34 minced the soil body A at the position of the cutting edge 11, and high-speed water flow sprayed out of the position of the cutting edge 11 is matched with the water spraying pipeline 13, so that slurry is generated.
The mud pumping pipe 42 also drives the crushing blade 46 to rotate when rotating, and the crushing blade 46 crushes the soil body A which cannot be crushed by the crushing device 3 and is mixed with water flowing out of the water spraying pipeline 13 and overflow water generated in the open caisson construction process to form slurry.
When the slurry pump 7 passes through, the slurry is pumped through the pumping pipe 42, the connecting pipe 44, the fixing pipe 45, the pipe 411, the switching bin 410, the joint pipe 412 and the suction pipe 71 in this order, and discharged to the external sludge tank through the discharge pipe 73.
The device can be used for carrying out rapid construction of the open caisson at the positions of the quicksand layer and the clay layer, and various devices and structural members can be flexibly assembled, so that the device is convenient to assemble in construction and disassemble after the construction is completed.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. Sand pumping drainage equipment for open caisson construction on quicksand layer and clay layer comprises a well body (1), wherein a cutting edge (11) is fixedly connected to the bottom of the well body (1), and an annular butt strap (12) is fixedly connected to the lower portion of the inner wall of the well body (1), and is characterized in that: the inner circumference of the integrated structure of the blade foot (11) and the well body (1) is uniformly provided with a water spraying pipeline (13), and the integrated structure further comprises a mounting ring (2), a mincing device (3), a mud pumping device (4), an adjustable connecting piece (5), a telescopic connecting piece (6) and a mud pump (7); the mounting ring (2) is arranged on the upper surface of the access plate (12), and an annular rack (21) is fixedly connected with the inner ring of the mounting ring (2);
the mincing device (3) comprises a rotary seat (31) and a reamer rod (32); the rotary seat (31) is rotationally connected with the inner ring of the mounting ring (2) and is uniformly provided with a plurality of rotary blades around the axis circumference of the mounting ring (2), the rotary cutter bar (32) is rotationally connected in the rotary seat (31), a gear (33) meshed with the rack (21) is fixedly connected at the top of the rotary cutter bar (32), a hinge blade (34) is uniformly fixedly connected at the bottom circumference of the rotary cutter bar (32), and the position of the hinge blade (34) corresponds to the position of the cutting edge (11);
the upper circumference of the mud pumping device (4) is uniformly fixedly connected with the adjustable connecting piece (5), the other end of the adjustable connecting piece (5) is connected with the mounting ring (2), and the mud pumping device (4) comprises a connecting cylinder (41), a mud pumping pipe (42) and a motor (43); the inside of the connecting cylinder (41) is coaxially provided with a connecting pipe (44), the circumference of the connecting pipe (44) is uniformly fixedly connected with a fixed pipe (45), the head of each fixed pipe (45) is fixedly connected with a side plate of the connecting cylinder (41), the top of the mud pumping pipe (42) is rotationally connected in the connecting pipe (44), the mud pumping pipe (42) is rotationally connected with a bottom plate of the connecting cylinder (41), the circumference of the bottom of the mud pumping pipe (42) is uniformly fixedly connected with a crushing blade (46), the crushing blade (46) is positioned below the hinge blade (34), the upper surface of a top plate of the connecting cylinder (41) is fixedly connected with a waterproof hood (47), the motor (43) is fixedly connected in the waterproof hood (47), the bottom of an output shaft of the motor (43) is fixedly connected with a rotary column (48), the bottom of the rotary column (48) is rotationally connected with the top plate of the connecting cylinder (41), a supporting rod (49) is fixedly connected between the bottom of the rotary column (48) and the top of the mud pumping pipe (42), the circumference of the rotary column (48) is uniformly fixedly connected with a waterproof hood (47), and the top of the waterproof hood (41) is fixedly connected with a conversion bin (410) through a conversion bin (410);
the telescopic connecting piece (6) is connected between the swivel base (31) and the mud pumping pipe (42);
the mud pump (7) is arranged outside the well body (1), a mud suction pipe (71) of the mud pump (7) is connected with the connector pipe (412) through a flange (72), and a mud discharge pipe (73) of the mud pump (7) is connected with an external mud tank;
the adjustable connecting piece (5) comprises a fixed rod (56), an adjusting rod (57) and an adjusting nut (58); one end of the fixed rod (56) is fixedly connected with the waterproof hood (47), a through hole (59) for the pipeline (411) to pass through is formed in the fixed rod (56), a cavity (510) is formed in the other end of the fixed rod (56), guide grooves (511) are uniformly formed in the circumference of the inner wall of the cavity (510), one end of the adjusting rod (57) is slidably connected in the cavity (510), a guide block (512) which is slidably connected with the track groove (37) is fixedly connected on the adjusting rod (57), a thread groove (513) is formed in the adjusting rod (57), the adjusting nut (58) is meshed with the thread groove (513), a holding sleeve (514) is fixedly connected outside the adjusting nut (58), and the holding sleeve (514) is rotationally connected with the outer wall of the fixed rod (56);
the head fixedly connected with extension board (51) of regulation pole (57), rotate on extension board (51) and be connected with axostylus axostyle (52), the bottom rigid coupling of axostylus axostyle (52) has limiting plate (53), the bottom rigid coupling of limiting plate (53) has connecting screw (54), connecting screw (55) corresponding with connecting screw (54) have been seted up to the upper surface of collar (2).
2. The sand pumping and draining equipment for open caisson construction on a quicksand layer and a clay layer according to claim 1, wherein the equipment comprises the following components: the circumference evenly is equipped with fixed orifices (22) that run through on strap (12), the lower surface rigid coupling of collar (2) has fixing screw (23) corresponding with fixed orifices (22), fixing screw (23) insert in corresponding fixed orifices (22), engage on fixing screw (23) of strap (12) below has fixation nut (24).
3. The sand pumping and draining equipment for open caisson construction on a quicksand layer and a clay layer according to claim 2, wherein the equipment comprises the following components: annular spout (35) have been seted up to the inner circle of strap (12), outside rigid coupling of swivel mount (31) have with spout (35) sliding connection's slider (36), annular track groove (37) have still been seted up to the upper and lower side of strap (12), the upper and lower bilateral symmetry rigid coupling of swivel mount (31) has mounting panel (38) of L shape, each the meshing has on mounting panel (38) with the lift screw (39) that track groove (37) corresponds, one side rotation that lift screw (39) is close to track groove (37) is connected with direction runner (310).
4. A sand pumping and draining device for open caisson construction on a quicksand layer and a clay layer according to claim 3, which is characterized in that: the telescopic connecting piece (6) comprises a sleeve (61) and a slide bar (62) which are sleeved with each other in a sliding mode, connecting studs (63) are fixedly connected to the two ends of the telescopic connecting piece (6), springs (64) are fixedly connected between the head of the slide bar (62) and the bottom of an inner cavity of the sleeve (61), limiting grooves (65) are uniformly formed in the circumference of the outer ring of the slide bar (62), limiting blocks (66) which are slidably connected with the limiting grooves (65) are fixedly connected to the inner cavity of the sleeve (61), and connecting threaded sleeves (67) corresponding to the connecting studs (63) are fixedly connected to the outer side of the rotary seat (31) and the outer wall of the mud pumping pipe (42).
5. The sand pumping and draining method for open caisson construction of the quicksand layer and the clay layer is realized based on the sand pumping and draining equipment for open caisson construction of the quicksand layer and the clay layer disclosed in claim 4, and is characterized in that: the method comprises the following steps:
s1: firstly, excavating an auxiliary pit (B) on a soil body (A) at a construction position, pouring an annular plain concrete backing plate (C) at the bottom of the auxiliary pit (B), excavating a containing groove (D) corresponding to a crushing blade (46) at the bottom of the auxiliary pit (B), and then hoisting a well body (1) on the backing plate (C);
s2: assembling equipment;
s3: after the equipment is assembled, pressurized water is pumped from the top of the water spraying pipeline (13), and the motor (43) and the slurry pump (7) are started, so that construction can be performed.
6. The sand pumping and draining method for open caisson construction on a quicksand layer and a clay layer according to claim 5, which is characterized in that: the pit wall of the auxiliary pit (B) is obliquely arranged, and the included angle between the pit wall and the horizontal plane is 30-45 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677268.9A CN113494097B (en) | 2021-06-18 | 2021-06-18 | Sand pumping and draining equipment and method for open caisson construction of quicksand layer and clay layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110677268.9A CN113494097B (en) | 2021-06-18 | 2021-06-18 | Sand pumping and draining equipment and method for open caisson construction of quicksand layer and clay layer |
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| CN113494097B true CN113494097B (en) | 2023-09-29 |
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| CN206368373U (en) * | 2016-12-15 | 2017-08-01 | 岩土科技股份有限公司 | A kind of open caisson construction equipment |
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| CN211973547U (en) * | 2019-12-26 | 2020-11-20 | 广东省建筑工程监理有限公司 | Sinking construction equipment without water drainage for open caisson |
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| CN212293270U (en) * | 2020-05-07 | 2021-01-05 | 孙永强 | Sludge pumping equipment of oil field operation system |
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2021
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| CN206368373U (en) * | 2016-12-15 | 2017-08-01 | 岩土科技股份有限公司 | A kind of open caisson construction equipment |
| CN109137953A (en) * | 2018-09-07 | 2019-01-04 | 中交二航局第二工程有限公司 | Native construction equipment is quickly taken under water |
| CN110805053A (en) * | 2019-11-05 | 2020-02-18 | 武汉市市政建设集团有限公司 | Construction method of deep foundation pit open caisson self-sinking supporting system |
| CN211973547U (en) * | 2019-12-26 | 2020-11-20 | 广东省建筑工程监理有限公司 | Sinking construction equipment without water drainage for open caisson |
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| CN113494097A (en) | 2021-10-12 |
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