CN216999688U - Efficient retaining wall plugging device for upper slurry leakage - Google Patents

Abstract

The utility model belongs to the technical field of cast-in-place pile construction, discloses a high-efficiency retaining wall plugging device for upper slurry leakage, and aims to solve the problems of low efficiency and poor plugging quality of a manual injection plugging mode. The utility model comprises a round cake-shaped spray head, wherein a cavity is arranged in the spray head, a plurality of spray holes communicated with the cavity are arranged on the circumferential wall of the spray head, the center of the upper part of the spray head is provided with a connecting part used for being connected with the lowest slurry conveying pipe, the uppermost slurry conveying pipe is communicated with a high-pressure mortar pump, and the periphery of at least one slurry conveying pipe is provided with a connecting buckle used for being connected with an external hoister. Compared with the prior art, the method adopts a manual operation mode, can greatly improve the effect of blocking the slurry leakage end protective wall, improves the efficiency and quality of blocking the slurry leakage on the upper part of the drill hole, and simultaneously greatly saves materials.

Description

Efficient retaining wall plugging device for upper slurry leakage

Technical Field

The utility model belongs to the technical field of cast-in-place pile construction, and particularly relates to a high-efficiency retaining wall plugging device for upper slurry leakage.

Background

The cast-in-place pile is a pile formed by forming a hole in place and pouring concrete or reinforced concrete. Commonly used are: (1) drilling a cast-in-place pile: the pile is formed by using a spiral drilling machine, a diving drilling machine and the like to form holes on site and pouring concrete, and the construction has no vibration and does not squeeze soil, but the settlement amount of the pile is slightly larger. The auger drilling machine is suitable for cohesive soil, sandy soil, artificial filling and the like above the ground water level, drilled soil blocks ascend along spiral blades on a drill rod to the outside of a discharge hole, the aperture is about 300mm, the drilling depth is 8-12 m, and the drill rod is selected according to soil quality and water content. The submersible drilling machine is suitable for cohesive soil, sandy soil, silt, mucky soil and the like, and is particularly suitable for forming holes in soil layers with higher underground water level. The mud is used for protecting the wall in order to prevent the hole from collapsing when drilling. Drilling in clay with clean water to form mud protecting wall, and drilling in sandy soil with prepared mud. And circularly removing drilled soil scraps by using slurry, and cleaning the hole after the hole is drilled to the required depth to remove the soil scraps sinking at the bottom of the hole, so that the settling amount of the pile is reduced. The large-diameter cast-in-situ bored pile popularized and applied in large-scale projects such as high-rise buildings, bridges and the like is constructed by the method, the diameter of the pile is more than 1m, the bottom of the pile can be reamed, and the bearing capacity of a single pile can reach thousands of tons. (2) Sinking a pipe and pouring a pile: the steel pipe with reinforced concrete pile shoe (pile tip) or valve type pile shoe is sunk into soil by hammering or vibration, then concrete is poured in and the pipe is pulled out at the same time to form the pile. The hammer pipe sinking and pipe drawing are called hammer cast-in-place pile, and the vibration pipe sinking and pipe drawing are called vibration cast-in-place pile. The method is easy to have the defects of pile breaking, necking, foot hanging pile, pile shoe water inlet, mud inlet and the like, and the method is carefully checked and timely treated during construction. In addition, explosive expanding cast-in-place piles are provided, which are formed by expanding the bottom of a pile hole with explosive to increase the bearing capacity.

The mud dado drilling bored concrete pile is a pile formed by using a pile machine to drill slowly under the mud dado condition, taking out drilling slag by using mud, protecting the hole wall from collapsing, and replacing the mud by using an underwater concrete pouring method after hole forming.

The slurry retaining wall cast-in-situ bored pile has the characteristics of construction noise reduction, strong adaptability and degree of mechanization, and has the advantages of convenient operation, mature process and safe and reliable construction process, thereby becoming one of the main modes of foundation pile construction.

When the slurry retaining wall drilling cast-in-place pile is constructed on site, a short retaining cylinder and a slurry retaining wall are usually combined for construction, the hole opening is protected by the short retaining cylinder (the length is generally 1-3 m), and deep retaining wall drilling is carried out in the hole by using slurry. However, slurry retaining wall drilling is a concealed project, construction quality control difficulty is high, and slurry leakage is easy to occur in the pebble bed drilling process. When drilling (flushing) into the deep part, the upper hole wall is unstable due to factors such as collision of a drill bit, slurry disturbance and the like, the upper slurry leakage condition occurs, if the slurry leakage is released, the slurry surface in the hole is lower than the underground water level, the surrounding rock pressure is generated, the shallow hole wall is unstable and collapses, the hole is collapsed to waste, the drill is stuck and buried, and the construction progress and quality are seriously influenced.

At present, a backfill plugging mode is generally adopted for plugging the slurry leakage, and when the slurry leakage quantity is not too large, a slurry pump is adopted to inject slurry into an orifice; when the mud is completely leaked, backfilling high-quality clay (yellow mud), starting impacting after backfilling to a certain depth, and plugging a leak; for the pile hole with multiple serious slurry leakage, C15 concrete is used for sealing the leak hole, and after normal operation, the ordinary slurry protective wall is used for continuous drilling.

At present, when C15 concrete is used for plugging a leak, cement slurry is directly sprayed to the position of the leak by adopting a grouting pipe according to the position of the leak, and the grouting pipe is manually extracted in the actual use process, so that the problems of low position precision and poor spraying quality exist, and the problems of low plugging efficiency and poor plugging effect are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides an efficient wall protection plugging device for upper slurry leakage, aiming at solving the problems of low efficiency and poor plugging quality of a manual injection plugging mode, and the efficient wall protection plugging device can improve the efficiency and quality of upper slurry leakage plugging of a drill hole and greatly save materials.

In order to solve the technical problem, the technical scheme adopted by the utility model is as follows:

the utility model provides a high-efficient dado plugging device to upper portion is leaked thick liquid which characterized in that, is including the shower nozzle that is the cake form, the inside of shower nozzle has the cavity, sets up a plurality ofly on the shower nozzle circumference wall and the orifice that communicates each other of cavity, the upper portion central authorities of shower nozzle be provided with be used for with the defeated thick liquid pipe interconnect's of below connecting portion, be located the defeated thick liquid pipe of top and communicate each other with high-pressure mortar pump, the periphery that has at least a defeated thick liquid pipe is provided with and is used for the connection buckle of being connected with outside lifting machine.

In some embodiments, the two ends of the slurry conveying pipe are provided with threaded connectors, and the adjacent slurry conveying pipes, the slurry conveying pipe and the spray head, and the slurry conveying pipe and the high-pressure mortar pump are connected with each other through threads.

In some embodiments, the spray head is provided with a suction pipe, the upper end of the suction pipe penetrates through the upper end face of the spray head and is connected with a delivery hose, the upper end of the delivery hose is connected with a slurry pump, and the lower end face of the suction pipe penetrates through the lower end face of the spray head and extends downwards for a certain distance.

In some embodiments, the lower end of the aspiration tube extends 1-1.5m beyond the lower end face of the spray head.

In some embodiments, a bearing is installed at the upper top of the spray head, the connecting part is connected to the upper top of the spray head through the bearing so that the connecting part and the spray head are rotatably connected, and flow deflectors are installed inside the connecting part and are arranged along the same spiral direction.

Compared with the prior art, the utility model has the following beneficial effects:

through years of field construction experience analysis, the condition of slurry leakage at the upper part of a pile hole is rarely caused by huge holes or karst caves, and most of the condition is caused by the instability of mud skins at the hole wall. When the high-efficiency retaining wall plugging device for upper slurry leakage is used, when slurry leakage occurs on the upper portion of a pile hole, firstly, slurry in the pile hole is sucked by using a suction pipe and is discharged through an output hose and a slurry pump, so that the slurry in the pile hole is located below a slurry leakage position by 1m, then, slurry for plugging is input from a high-pressure slurry pump, the slurry enters a nozzle through a connecting portion, the slurry forms vortex under the action of a flow deflector, the nozzle is driven to rotate, the high-pressure slurry is sprayed out from a spray hole of the nozzle, and therefore wall protection reinforcing treatment is performed on a soil body in the area around the slurry leakage. And in the process of spraying by using the spray head, the lifting machine is used for driving the slurry conveying pipe to move up and down, so that the retaining wall reinforcing treatment of the slurry leaking end is completed. Compared with the prior art, the method adopts a manual operation mode, can greatly improve the effect of blocking the slurry leakage end protective wall, improves the efficiency and quality of blocking the slurry leakage on the upper part of the drill hole, and simultaneously greatly saves materials.

In the use process, the cake-shaped spray heads are arranged at the lower end of the slurry conveying pipe, and the spray holes are formed in the periphery of the spray heads. And the spray head automatically rotates under the action of the flow deflector, so that the problem of uneven spraying around the slurry leaking section caused by manual operation of the slurry conveying pipe is avoided.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a showerhead according to the present invention;

fig. 3 is a schematic structural view of a guide vane;

the labels in the figure are: 01. the device comprises a pile hole, 02, a short protective cylinder, 03, a slurry liquid level, 04, a slurry leaking section, 1, a spray head, 11, a cavity, 12, spray holes, 13, a bearing, 2, a connecting part, 21, a central column, 22, a flow deflector, 3, a slurry conveying pipe, 4, a high-pressure mortar pump, 5, a lifting machine, 6, a suction pipe, 7 and an output hose.

Detailed Description

The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art in conjunction with specific situations.

The efficient protecting wall plugging device for upper slurry leakage comprises a round cake-shaped spray head 1, wherein a cavity 11 is formed in the spray head 1, a plurality of spray holes 12 communicated with the cavity 11 are formed in the circumferential wall of the spray head 1, a connecting part 2 used for being connected with a bottommost slurry conveying pipe 3 is arranged in the center of the upper part of the spray head 1, the uppermost slurry conveying pipe is communicated with a high-pressure mortar pump 4, and a connecting buckle used for being connected with an external hoister 5 is arranged on the periphery of at least one slurry conveying pipe 3.

Wherein, the hoisting machine 5 and the high-pressure mortar pump 4 belong to the prior art products, and can be understood and understood by those skilled in the art, and are not described in detail herein.

In the specific implementation process, the periphery of the slurry conveying pipe 3 can be provided with a connecting buckle for being connected with a hoisting machine 5, and the hoisting machine 5 is utilized to drive the slurry conveying pipe 3 to move up and down in the pile hole 01.

In some embodiments, the two ends of the slurry conveying pipe 3 are provided with threaded connectors, and the adjacent slurry conveying pipes, the slurry conveying pipe 3 and the spray head 1, and the slurry conveying pipe 3 and the high-pressure mortar pump 4 are connected with each other through threads. That is, one end of the slurry feed pipe 3 is a male end, the other end is a female end, and the male end and the female end are connected by a screw thread, so that the slurry feed pipes 3 are connected with each other.

In some embodiments, a suction pipe 6 is installed on the nozzle 1, the upper end of the suction pipe 6 penetrates through the upper end surface of the nozzle and is connected with an output hose 7, the upper end of the output hose 7 is connected with a slurry pump, and the lower end surface of the suction pipe 6 penetrates through the lower end surface of the nozzle 1 and extends downwards for a certain distance, so that slurry is prevented from influencing the blocking of the slurry input through the slurry input pipe 3 on the protecting wall of the slurry leakage section 04.

In some embodiments, the lower end of the aspiration tube 6 extends 1-1.5m beyond the lower end face of the spray head 1. When the slurry retaining wall cast-in-situ bored pile is constructed on site, the short retaining cylinder 02 and the slurry retaining wall are usually constructed in a combined manner so as to protect the pile hole 01. When slurry leakage occurs at the upper part of the pile hole 01 (for example, when slurry leakage occurs at the slurry leakage section 04 shown in fig. 1), the slurry in the pile hole 01 is directly sucked by using the suction pipe 6 on the spray head 1 and communicating the output hose 7 with a slurry pump until the slurry level 03 is 1-1.5m lower than the lower end of the slurry leakage section 04, and then the slurry leakage section 04 is subjected to wall protection plugging in a manner of injecting the slurry. According to the utility model, the suction pipe 6 is directly arranged on the cake-shaped spray head 1, and the length of the lower end of the suction pipe 6 is designed, so that the suction of slurry in the pile hole 01 and the blocking of the protecting wall of the slurry leakage section 04 can be realized by one-time downward placing, and the working efficiency is further improved.

In some embodiments, a bearing 13 is installed on the upper top of the spray head 1, the connecting part 2 is connected to the upper top of the spray head 1 through the bearing 13 so that the connecting part 2 is rotatably connected to the spray head 1, guide vanes 22 are installed inside the connecting part 2, and the guide vanes 22 are arranged along the same spiral direction. Wherein, the center of the lower part of the connecting part 2 is provided with a central column 21, and each guide vane 22 is evenly distributed on the periphery of the central column 21. When high-pressure cement paste enters the connecting part from the slurry conveying pipe 3, the flowing direction of the high-pressure cement paste can be changed under the flow guide effect of the flow guide sheet, so that the high-pressure cement paste enters the cavity 11 along the same spiral direction, and the spray head 1 can slowly rotate under the effect of the spiral high-pressure cement paste, so that all positions of the slurry leaking section 04 are sprayed. When the slurry conveying pipe 3 and the spray head 1 are used for cement injection plugging, the output hose 7 should be taken down firstly to avoid mechanical interference caused by rotation of the spray head 1.

Through years of field construction experience analysis, the condition of slurry leakage at the upper part of a pile hole is rarely caused by huge holes or karst caves, and most of the condition is caused by instability of mud skins at the hole wall. When the high-efficiency retaining wall plugging device for upper slurry leakage is used, when slurry leakage occurs on the upper portion of a pile hole, firstly, slurry in the pile hole is sucked by using a suction pipe and is discharged through an output hose and a slurry pump, so that the slurry in the pile hole is located below a slurry leakage position by 1m, then, slurry for plugging is input from a high-pressure slurry pump, the slurry enters a nozzle through a connecting portion, the slurry forms vortex under the action of a flow deflector, the nozzle is driven to rotate, the high-pressure slurry is sprayed out from a spray hole of the nozzle, and therefore wall protection reinforcing treatment is performed on a soil body in the area around the slurry leakage. And in the process of spraying by using the spray head, the lifting machine is used for driving the slurry conveying pipe to move up and down, so that the wall protection reinforcement treatment of the slurry leaking end is completed. Compared with the existing manual operation mode, the method can greatly improve the effect of blocking the slurry leaking end by the protective wall, improve the efficiency and quality of blocking the slurry leaking from the upper part of the drill hole, and greatly save materials.

In the use process, the lower end of the slurry conveying pipe is provided with the cake-shaped spray head, and the periphery of the spray head is provided with the spray holes. And the spray head automatically rotates under the action of the flow deflector, so that the problem of uneven spraying around the slurry leaking section caused by manual operation of the slurry conveying pipe is avoided.

In the specific implementation process, the wall protection material (high-pressure cement slurry) is doped with the accelerator, the water-cement ratio of the prepared cement slurry is 1:1, the injection grouting pressure is 5-20 MPa, and the lifting speed of the spray head 1 is 10-20 cm/min. Meanwhile, admixture materials such as cement paste and the like can be selected according to the field stratum, and the acceleration and the jet grouting pressure of the slurry conveying pipe are reasonably controlled.

If the hole of the slurry leaking section is large, the lightweight aggregates such as furnace ash blocks, gypsum and the like can be thrown into the hole, and cement slurry can be sprayed; and (4) after the cement slurry is solidified, slurry supplementing is carried out, whether plugging is carried out is checked, and the plugging is not successful, and the plugging is carried out in the first step again until the plugging of the protective wall is successful.

And the structure of the utility model can be used for conveniently and rapidly spraying cement paste for multiple times in the slurry leakage section 04, thereby improving the plugging capability.

Claims (5)

1. The utility model provides a high-efficient dado plugging device to upper portion hourglass thick liquid which characterized in that, is including the shower nozzle that is the cake form, the inside of shower nozzle has the cavity, sets up a plurality of orifices that communicate each other with the cavity on the shower nozzle circumference wall, the upper portion central authorities of shower nozzle be provided with be used for with the defeated thick liquid pipe interconnect's of below connecting portion, be located the defeated thick liquid pipe of top and communicate each other with the high-pressure mortar pump, the periphery that has at least a defeated thick liquid pipe is provided with the connection buckle that is used for being connected with outside lifting machine.

2. The efficient retaining wall plugging device for the upper slurry leakage according to claim 1, wherein the two ends of the slurry conveying pipes are respectively provided with a threaded connector, and the adjacent slurry conveying pipes, the slurry conveying pipe and the spray head, and the slurry conveying pipe and the high-pressure mortar pump are connected with each other through threads.

3. The efficient retaining wall plugging device for the upper slurry leakage according to claim 1 or 2, wherein a suction pipe is installed on the spray head, the upper end of the suction pipe penetrates through the upper end face of the spray head and is connected with an output hose, the upper end of the output hose is connected with a slurry pump, and the lower end face of the suction pipe penetrates through the lower end face of the spray head and extends downwards for a certain distance.

4. A high efficiency retaining wall plugging device for upper slurry leakage according to claim 3, wherein the lower end of said suction pipe extends 1-1.5m beyond the lower end surface of said nozzle.

5. The efficient retaining wall plugging device for the upper slurry leakage according to claim 1, wherein a bearing is installed at the upper top of the nozzle, the connecting part is connected to the upper top of the nozzle through the bearing so as to enable the connecting part and the nozzle to be rotatably connected, flow deflectors are installed inside the connecting part, and the flow deflectors are arranged in the same spiral direction.

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