CN218508408U

CN218508408U - Fine sand stratum vibration grouting reinforcing apparatus

Info

Publication number: CN218508408U
Application number: CN202222357109.3U
Authority: CN
Inventors: 尹业新; 王青薇; 秦春艳; 李宁
Original assignee: Nanjing Yi Run Environmental Technology Co ltd; Nanjing Ets Environmental Technology Co ltd
Current assignee: Nanjing Yi Run Environmental Technology Co ltd; Nanjing Ets Environmental Technology Co ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-02-21
Anticipated expiration: 2032-09-02

Abstract

The utility model belongs to the technical field of the environment restoration technique and specifically relates to a silty sand stratum vibration slip casting reinforcing apparatus, the injection includes audio frequency vibration drilling mechanism and slip casting mechanism, and audio frequency vibration drilling mechanism includes: the drill bit comprises an audio power head capable of moving up and down, a hollow drill rod arranged at the output end of the audio power head and a drill bit arranged at the lower end of the hollow drill rod; the drill bit is provided with a penetration hole for communicating the inside of the hollow drill rod with the outside of the drill bit; the grouting mechanism comprises a liquid A storage tank, a liquid B storage tank, a liquid A injection pump connected with a liquid A storage tank through a pipeline, a liquid B injection pump connected with a liquid B storage tank through a pipeline, a mixer connected with the liquid A injection pump and the liquid B injection pump through pipelines, and a hose connected with the output end of the mixer; the hose extends into the hollow drill shaft to be connected to the drill bit. The utility model discloses store A liquid and B liquid alone, mix through blender limit slip casting limit, can guarantee the good mobility of slip casting liquid, slip casting infiltration area is big, and slip casting is efficient.

Description

Fine sand stratum vibration grouting reinforcing apparatus

Technical Field

The utility model belongs to the technical field of the environment restoration technique and specifically relates to a silty fine sand stratum vibration slip casting reinforcing apparatus.

Background

The silty-fine sand stratum is a common weak and bad stratum, is commonly used in projects such as underground comprehensive pipe galleries, subways, tunnels and the like, has loose structure and poor self-stability, is easy to deform suddenly and induce accidents, and the strengthening and seepage-proofing treatment of the stratum is a hotspot of engineering research. After the mixed liquid A and the mixed liquid B are injected into the fine sand layer, the fine sand layer can be stabilized after solidification. The solution A can Be prepared by diluting 40Be water glass with water, and the solution B can Be prepared by diluting glyoxal and phosphoric acid with water. Two well-mixed liquids cannot be added too much at one time, otherwise the two well-mixed liquids become viscous and are difficult to permeate, and if the two well-mixed liquids are not used at one time, the residual mixed liquids are wasted.

The current grouting process is divided into four categories according to the movement mode of grout in the stratum: osmotic grouting, extrusion grouting, displacement grouting and high-pressure jet grouting. The grouting permeation is slow, the permeation area of primary grouting is not large, and the grouting efficiency is low.

SUMMERY OF THE UTILITY MODEL

Slip casting infiltration that exists among the prior art is slow, mixed back slip casting liquid becomes thick gradually easily, influences the problem of slip casting effect, the utility model provides an utilize audio frequency vibration drilling equipment, and cooperate the slip casting device to realize carrying out the mode that becomes mixed limit slip casting after the thin sand layer vibration liquefaction of powder carries out the thin sand stratum vibration slip casting reinforcing apparatus that engineering was under construction.

For solving the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a fine sand stratum vibration slip casting reinforcing apparatus which characterized in that: including audio frequency vibration drilling mechanism and slip casting mechanism, audio frequency vibration drilling mechanism includes: the device comprises an audio power head capable of moving up and down, a hollow drill rod arranged at the output end of the audio power head and a drill bit arranged at the lower end of the hollow drill rod; the drill bit is provided with a penetration hole for communicating the inside of the hollow drill rod with the outside of the drill bit; the grouting mechanism comprises a liquid A storage tank, a liquid B storage tank, a liquid A injection pump connected with a pipeline of the liquid A storage tank, a liquid B injection pump connected with a pipeline of the liquid B storage tank, a mixer connected with the liquid A injection pump and the liquid B injection pump through pipelines, and a hose connected with the output end of the mixer; the hose extends into the hollow drill shaft and is connected to the drill bit.

Furthermore, the drill bit includes outer drill bit and the interior connection air core rod of outer drill bit upper end, the top of interior connection air core rod is connected the hose, have a plurality of liquid holes on the outer peripheral face of interior connection air core rod, the clearance between interior connection air core rod and the hollow drill rod with the infiltration hole intercommunication on the outer drill bit.

Further, the liquid A injection pump and the liquid B injection pump both adopt double-cylinder double-acting piston reciprocating structures.

Furthermore, the audio frequency vibration drilling mechanism comprises a first frame body and a first oil cylinder arranged on the first frame body; the audio frequency vibration head is installed at the output end of the first oil cylinder and is connected to the first frame body in a vertically sliding mode.

Furthermore, the audio frequency vibration drilling mechanism further comprises a crawler chassis, a second oil cylinder is mounted at the front part of the crawler chassis, the telescopic end of the second oil cylinder is connected with the first frame body, and the first frame body is rotatably connected with the crawler chassis.

The utility model has the advantages that:

the liquid A and the liquid B are separately stored and are mixed while grouting through the mixer, so that good fluidity of grouting liquid can be guaranteed, the two pumps 1 of the liquid A injection pump and the liquid B injection pump are used for grouting simultaneously, the grouting pressure is high, the diffusivity of the grouting liquid is improved by using the characteristics of looseness and easy liquefaction of fine sandy soil and adopting high-frequency vibration and high initial grouting pressure, and the defects that effective grouting and the grout diffusion radius cannot be determined, which are difficult to achieve in the traditional grouting method, are overcome. The grouting permeation area is large, and the grouting efficiency is high.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is an overall structure diagram of the embodiment of the present invention;

FIG. 2 is a block diagram of an acoustic vibration drilling mechanism according to an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1.

In the figure: 1. the acoustic power head comprises an acoustic power head, 2, a hollow drill rod, 3, a drill bit, 31, a penetration hole, 32, an outer drill bit, 33, an inner connecting hollow rod, 34, a liquid outlet hole, 4, a liquid A storage tank, 5, a liquid B storage tank, 6, a liquid A injection pump, 7, a liquid B injection pump, 8, a mixer, 9, a hose, 10, a first frame body, 11, a first oil cylinder, 12, a crawler chassis, 13, a second oil cylinder, 14, a consolidation body, 15 and a fine sand stratum.

Detailed Description

The present invention will now be described in further detail with reference to the drawings and preferred embodiments. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-3, the device for reinforcing the fine sand stratum by vibration grouting comprises an audio frequency vibration drilling mechanism and a grouting mechanism, wherein the audio frequency vibration drilling mechanism comprises: the drill bit comprises an audio power head 1 capable of moving up and down, a hollow drill rod 2 arranged at the output end of the audio power head 1 and a drill bit 3 arranged at the lower end of the hollow drill rod 2; the drill bit 3 is provided with a penetration hole 31 for communicating the inside of the hollow drill rod 2 and the outside of the drill bit 3; the grouting mechanism comprises a liquid A storage tank 4, a liquid B storage tank 5, a liquid A injection pump 6 connected with the liquid A storage tank 4 through a pipeline, a liquid B injection pump 7 connected with the liquid B storage tank 5 through a pipeline, a mixer 8 connected with the liquid A injection pump 6 and the liquid B injection pump 7 through pipelines, and a hose 9 connected with the output end of the mixer 8; the hose 9 extends into the hollow drill shaft 2 and is connected to the drill bit 3.

Referring to fig. 3, the drill 3 includes an outer drill 32 and an inner connecting hollow rod 33 at the upper end of the outer drill 32, the top end of the inner connecting hollow rod 33 is connected with the hose 9, the outer circumferential surface of the inner connecting hollow rod 33 is provided with a plurality of liquid outlet holes 34, and the gap between the inner connecting hollow rod 33 and the hollow drill 2 is communicated with the penetration hole 31 of the outer drill 32. The mixed liquid of the liquid A and the liquid B is pumped into the inner connecting rod through the hose 9, enters the bottom of the hollow drill rod 2 through the liquid outlet hole 34 on the inner connecting hollow rod 33, flows into the penetration hole 31 from the inside of the hollow drill rod 2, and is pressed into the silty-fine sand stratum 15 under high pressure.

The liquid A injection pump 6 and the liquid B injection pump 7 both adopt a double-cylinder double-acting piston reciprocating structure, are driven in a full hydraulic mode, and are compact in structure, small in size, light in weight, stable and reliable. The liquid A injection pump 6 and the liquid B injection pump 7 are two completely independent injection machine body structures and can perform the following steps of 1:1 double-liquid injection, wherein an A liquid injection pump 6 and a B liquid injection pump 7 are arranged on a vehicle body with a traveling wheel and pushed to proper positions as required.

Referring to fig. 2, the acoustic frequency vibration drilling mechanism includes a first frame 10 and a first cylinder 11 mounted on the first frame 10; the audio frequency vibration head is arranged at the output end of the first oil cylinder 11 and is connected to the first frame body 10 in a vertical sliding mode. The audio frequency vibrating head is driven to move up and down through the expansion and contraction of the first oil cylinder 11.

Referring to fig. 2, the acoustic frequency vibration drilling mechanism further includes a crawler chassis 12, a second cylinder 13 is installed at the front portion of the crawler chassis 12, a telescopic end of the second cylinder 13 is connected to the first frame 10, and the first frame 10 is rotatably connected to the crawler chassis 12. The first frame body 10 is driven to rotate by the extension and retraction of the second oil cylinder 13 so as to adjust the angle of the audio frequency vibration head drilling into the ground.

The acoustic frequency vibration drilling mechanism adopts a high-frequency resonance technology, utilizes a pair of reverse eccentric rotating shafts to generate an exciting force with the frequency audible by human ears of 50-200 Hz, liquefies a fine sand layer, and simultaneously injects grout into a stratum for seepage-proofing reinforcement treatment, thereby effectively improving the quality of a diffusion area and a consolidation body 14 of the grout. Moreover, due to factors such as liquefaction, inertia effect and temporary reduction of soil porosity, the friction force on the drill rod and the drill bit 3 can be greatly reduced.

The utility model discloses working process does:

the acoustic power head 1 is adjusted to be vertical to the ground through the second air cylinder, then the first air cylinder drives the acoustic power head 1 to move downwards, the acoustic power head 1 rotates and moves downwards, resonance energy is generated through high-frequency vibration of the acoustic vibration head 4 in the drilling process, the resonance energy is downwards transmitted to the drill bit 3 through the hollow drill rod 2 to enable the drill bit 3 to penetrate through a hard stratum, and the acoustic drill is suitable for soft soil, mixed soil and the hard stratum and can provide a high-quality undisturbed sample.

The vibration action of the acoustic power head 1 and the reciprocating motion of the liquid A injection pump 6 and the liquid B injection pump 7 are combined action, when the natural frequencies of the hollow drill rod 2, the hose 9 and the fine sand stratum 15 are overlapped, resonance can be generated, soil is liquefied through high-frequency vibration of the acoustic power head 1, meanwhile, the liquid A injection pump 6 and the liquid B injection pump 7 are simultaneously injected into the mixer 8 to be mixed and then injected into the position of the drill bit 3 through the hose 9, the mixed liquid permeates into the fine sand stratum 15 from the permeation hole 31, the mixed liquid permeates into the fine sand stratum 15 through the modes of compaction, splitting, permeation and the like under certain grouting pressure, and the fine sand stratum 15 is reinforced after solidification, so that loose soil in the fine sand stratum 15 forms a solidified body 14, the stratum is stabilized, and collapse or collapse is prevented.

In addition, in order to achieve the optimal slurry diffusion effect in the vibration grouting process, a vibration source needs to generate resonance with the fine sand stratum 15 to quickly destroy the structure of the stratum, the pore water pressure is increased, the soil body strength is reduced, the flowing resistance of the slurry is reduced, and then the slurry can be quickly diffused in the fine sand stratum 15 and forms a consolidated body 14 together with sand.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a fine sand stratum vibration slip casting reinforcing apparatus which characterized in that: including audio frequency vibration drilling mechanism and slip casting mechanism, audio frequency vibration drilling mechanism includes: the drill bit comprises an audio power head (1) capable of moving up and down, a hollow drill rod (2) arranged at the output end of the audio power head (1) and a drill bit (3) arranged at the lower end of the hollow drill rod (2); the drill bit (3) is provided with a penetration hole (31) for communicating the inside of the hollow drill rod (2) with the outside of the drill bit (3); the grouting mechanism comprises an A liquid storage tank (4), a B liquid storage tank (5), an A liquid injection pump (6) connected with the A liquid storage tank (4) through a pipeline, a B liquid injection pump (7) connected with the B liquid storage tank (5) through a pipeline, a mixer (8) connected with the A liquid injection pump (6) and the B liquid injection pump (7) through pipelines, and a hose (9) connected with the output end of the mixer (8); the hose (9) extends into the hollow drill rod (2) and is connected to the drill bit (3).

2. The vibrating grouting reinforcement device for the silty-fine sand stratum as claimed in claim 1, characterized in that: drill bit (3) including outer drill bit (32) with interior connection air rod (33) of outer drill bit (32) upper end, the top of interior connection air rod (33) is connected hose (9), have a plurality of liquid holes (34) on the outer peripheral face of interior connection air rod (33), the clearance between interior connection air rod (33) and hollow drill rod (2) with infiltration hole (31) intercommunication on outer drill bit (32).

3. The fine sand stratum vibration grouting reinforcement device of claim 1, characterized in that: the liquid A injection pump (6) and the liquid B injection pump (7) both adopt a double-cylinder double-acting piston reciprocating structure.

4. The vibrating grouting reinforcement device for the silty-fine sand stratum as claimed in claim 1, characterized in that: the acoustic vibration drilling mechanism comprises a first frame body (10) and a first oil cylinder (11) arranged on the first frame body (10); the audio frequency vibration head is installed at the output end of the first oil cylinder (11) and is connected to the first frame body (10) in a vertically sliding mode.

5. The vibrating grouting reinforcement device for the silty-fine sand stratum as claimed in claim 4, characterized in that: the acoustic frequency vibration drilling mechanism further comprises a crawler chassis (12), a second oil cylinder (13) is mounted at the front portion of the crawler chassis (12), the telescopic end of the second oil cylinder (13) is connected with the first frame body (10), and the first frame body (10) is rotatably connected with the crawler chassis (12).