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CN-122013791-A - Pile hole grouting device for sand layer and gravel layer sites and construction method of pile hole grouting device

CN122013791ACN 122013791 ACN122013791 ACN 122013791ACN-122013791-A

Abstract

The invention relates to the technical field of civil engineering, and discloses a pile hole grouting device for sand layers and gravel layers and a construction method thereof, wherein the pile hole grouting device comprises a drilling machine power head and a spiral drill rod, the length of the spiral drill rod is matched with the depth of a base hole, a slurry conveying channel is arranged in the middle of the spiral drill rod, a drill bit is fixedly connected to the bottom end of the spiral drill rod through a flange, a movable cover plate is hinged to one side of a slurry outlet, and the grouting device further comprises: the utility model provides a pulp storage tank, including body, adapter sleeve, pulp storage tank and defeated thick liquid pipe, the body cavity sets up and the top has seted up into thick liquid mouth, and the spiral body top of locating the auger stem is inserted to the adapter sleeve and both rotate to be connected, and the lower extreme of body is inserted and is established to be connected on the adapter sleeve, along with the rotation of auger stem, and the body remains motionless, and the pulp storage tank is filled with the chemical liquid thick liquid that is used for strengthening the base hole inner wall, and in the pulp storage tank was stretched into to defeated thick liquid pipe one end, the other end and inlet intercommunication. The invention can effectively solve the hole collapse phenomenon, realize zero pollution to the field environment, reduce the cost and improve the construction efficiency and quality.

Inventors

  • LIU QINGJIE
  • LI BINBIN

Assignees

  • 陕西龙海新创基础工程有限公司

Dates

Publication Date
20260512
Application Date
20260319

Claims (9)

  1. 1. The utility model provides a stake hole slip casting device for sand bed, gravel layer place, its characterized in that, including rig unit head (1) and with auger stem (2) that rig unit head (1) rotation end department is connected, its characterized in that, the degree of depth of foundation hole is matchd to the length of auger stem (2), and defeated thick liquid passageway (21) have been seted up at the middle part of auger stem (2), auger stem (2) bottom has linked firmly drill bit (23) through the flange, drill bit (23) below is the grout outlet, and is located one side of grout outlet and articulates there is rotatable toper movable cover plate (24) of opening, along with the lifting of auger stem (2), movable cover plate (24) below drill bit (23) are opened in order to make the thick liquid outflow in defeated thick liquid passageway (21) through its dead weight autogiration, and the slip casting device still includes: the pipe body (3) is arranged in a hollow way, and the top of the pipe body is provided with a slurry inlet (31); the connecting sleeve (4) is inserted into the top end of the screw rod body (22) of the screw rod (2) and is rotationally connected with the screw rod body, the lower end of the pipe body (3) is inserted and connected onto the connecting sleeve (4), and the pipe body (3) keeps motionless along with the rotation of the screw rod (2); a slurry storage tank (5) filled with chemical slurry for reinforcing the inner wall of the base hole; And one end of the slurry conveying pipe (6) stretches into the slurry storage tank (5), the other end of the slurry conveying pipe is communicated with the slurry inlet (31), and slurry is conveyed into the slurry inlet (31) through the slurry storage tank (5).
  2. 2. A pile hole grouting device for sand and gravel layer fields as claimed in claim 1, characterized in that the end part of the grouting pipe (6) arranged in the grouting pool (5) is connected with a grouting pump (7), and the grouting pump (7) is used for pressurizing and conveying the grouting in the grouting pool (5) into the grouting pipe (6).
  3. 3. The pile hole grouting device for sand and gravel fields according to claim 1, wherein the chemical grout comprises high polymer material polyacrylamide and water.
  4. 4. A pile hole grouting device for sand and gravel sites according to claim 2, characterised in that the rig power head (1) comprises a support (15) for supporting, a support platform (8) is provided on one side of the rig power head (1), the support platform (8) comprising: A base (81) which is supported by the ground; The tower (82) is fixedly connected with the base (81), a sliding rail (83) extending along the longitudinal direction is arranged on one side of the tower (82), the support (15) of the drilling machine power head (1) is in sliding connection with the sliding rail (83) on the side wall of the tower (82) through a sliding piece, and the lower part of the tower (82) can be displaced; and the hoisting equipment (84) is used for hoisting and lifting the drilling machine power head (1) to longitudinally displace along the slideway of the sliding rail (83) so as to adjust the height.
  5. 5. A pile hole grouting device for sand and gravel fields according to claim 1, wherein the depth of the grouting pile hole is 6m to 50m, and the diameter of the grouting pile hole is 400mm to 800mm.
  6. 6. The pile hole grouting device for the sand layer and the gravel layer field according to claim 4, wherein the drilling machine power head (1) further comprises a motor (11), a speed reducer (12), a driving gear (13) and a driven gear (14), the upper end of the spiral drill rod (2) is inserted into a support (15) of the drilling machine power head (1) and is rotationally connected with the support, the driven gear (14) is fixedly sleeved on the upper portion of a spiral rod body (22) of the spiral drill rod (2), a shell of the motor (11) and a shell of the speed reducer (12) are fixedly connected with the support (15), an output shaft of the motor (11) is fixedly connected with an input shaft of the speed reducer (12), the driving gear (13) is fixedly sleeved on an output shaft of the speed reducer (12), and the driving gear (13) is meshed with the driven gear (14).
  7. 7. A pile hole grouting device for sand and gravel sites according to claim 1, characterised in that the slurry pipe (6) is of flexible pipe construction, leaving an extendable length margin.
  8. 8. A pile hole grouting device for sand and gravel sites as claimed in claim 1, characterized in that the flange between the tower (82) and the base (81) is fixed with inclined reinforcing ribs to enhance stability.
  9. 9. A construction method of a pile hole grouting device for sand and gravel sites according to claim 6, comprising the steps of: Positioning and drilling a power head (1) of a drilling machine, namely positioning a pile hole grouting device at a preset pile position, starting the power head (1) of the drilling machine to drive a spiral drill rod (2) to rotate, and enabling the spiral drill rod (2) to vertically drill into a soil layer until the designed hole depth is reached, and continuously conveying soil in the hole to an orifice by a spiral blade in the drilling process, so that soil sampling and hole forming in dry operation are realized; Grouting preparation, namely stopping drilling after the drilling depth reaches the design requirement, and keeping the spiral drill rod (2) at the bottom of the hole; Starting a slurry outlet and grouting, namely starting hoisting equipment (84), slowly lifting a spiral drill rod (2), starting a slurry conveying pump (7) by rotating a movable cover plate (24) of a drill bit (23) downwards around a hinge point under the action of dead weight, conveying chemical slurry pre-matched in a slurry storage tank (5) to a slurry inlet (31) of a pipe body (3) through a slurry conveying pipe (6), and sequentially flowing out through a connecting sleeve (4), a slurry conveying channel (21) of the spiral drill rod (2) and the drill bit (23) and injecting the slurry into the bottom of a hole; and (3) drilling and grouting simultaneously, namely, in the process of continuously lifting the spiral drill rod (2), keeping the slurry conveying pump (7) continuously working, and continuously injecting chemical slurry into the pile hole from the bottom of the hole until the spiral drill rod (2) completely lifts out the hole opening, wherein the chemical slurry fills the whole pile hole.

Description

Pile hole grouting device for sand layer and gravel layer sites and construction method of pile hole grouting device Technical Field The invention relates to the technical field of civil engineering, in particular to a pile hole grouting device for sand layers and gravel layer sites and a construction method thereof. Background The foundation pile of concrete pouring is common pile class, this stake possesses stronger stability and intensity, wherein, in the drilling of special sand bed, the time spent in the gravel layer place, if the dado is handled and can cause the phenomenon of collapsing the hole, consequently, it is very necessary to realize the dado to the stake hole, at present conventional dado is usually adopted mud to realize the dado of stake hole, this mud is usually by bentonite or with smashing the clay and prepares together, and to boring in sand bed and gravel layer, usually on-the-spot setting is a great mud pond, in the in-process of rig unit head drilling, with the mud in the mud pond from top to bottom in stake hole opening department continuously pour into in-the hole, the in-process, can pass through the slush pump in hole center, again with mixed viscous mud take out ground, then make the mud be reinjected into in the mud pond and deposit, the mud after the sediment is repeated cyclic utilization again in the stake hole, finally accomplish the dado grouting in the stake hole, however, this prior art is not good for the dado, moreover, the mud is difficult to be high probability by the drilling, and the quality is caused by the drilling rod is high in proper order to be polluted by the drilling rod is high, and the construction cost is greatly reduced along with the time spent in the drilling of the hole is difficult to be finished. Disclosure of Invention The invention provides a pile hole grouting device for a sand layer and gravel layer site and a construction method thereof, which can effectively solve the hole collapse phenomenon, realize zero pollution to the site environment, reduce the cost and improve the construction efficiency and quality. The invention provides a pile hole grouting device for a sand layer and gravel layer site, which comprises a drilling machine power head and a spiral drill rod connected with the rotating end of the drilling machine power head, wherein the length of the spiral drill rod is matched with the depth of a base hole, a slurry conveying channel is formed in the middle of the spiral drill rod, a drill bit is fixedly connected to the bottom end of the spiral drill rod through a flange, a slurry outlet is formed below the drill bit, a conical movable cover plate capable of being opened in a hinged mode is arranged on one side of the slurry outlet, the movable cover plate below the drill bit automatically rotates by self weight to enable slurry in the slurry conveying channel to flow out, the grouting device further comprises a pipe body, a connecting sleeve, a slurry storage tank and a slurry conveying pipe, the pipe body is hollow, the top of the pipe body is provided with a slurry inlet, the connecting sleeve is inserted into the top end of the spiral rod body of the spiral drill rod and is connected with the rotating end of the connecting sleeve, the lower end of the pipe body is inserted into the connecting sleeve, the slurry storage tank is filled with chemical slurry used for reinforcing the inner wall of the base hole along with the rotation of the spiral drill rod, one end of the pipe body extends into the slurry storage tank, and the slurry inlet is communicated with the slurry storage tank through the slurry inlet, and the slurry is conveyed into the slurry storage tank. Preferably, the end part of the slurry conveying pipe arranged in the slurry storage tank is connected with a slurry conveying pump, and the slurry conveying pump is used for pressurizing and conveying the slurry in the slurry storage tank into the slurry conveying pipe. Preferably, the chemical slurry comprises a high molecular polymer material polyacrylamide and water. The support of the drilling machine power head is slidably connected with the sliding rail of the side wall of the tower through a sliding piece, and the hoisting equipment is used for hoisting and lifting the sliding rail of the drilling machine power head to longitudinally displace so as to adjust the height. Preferably, the depth of the grouting pile hole is 6-50 m, and the diameter of the grouting pile hole is 400-800 mm. Preferably, the drilling machine power head further comprises a motor, a speed reducer, a driving gear and a driven gear, wherein the upper end of the spiral drill rod is inserted into a support seat of the drilling machine power head and is in rotary connection with the support seat, the driven gear is fixedly sleeved on the upper portion of the spiral rod body of the spiral drill rod, a motor shell and a speed reducer shell are fixedly connected with the support seat, an output sh