CN220319565U - Traction jacking pipe and jacking equipment suitable for pressure imbalance stratum - Google Patents

Abstract

The utility model discloses a traction jacking pipe and jacking equipment suitable for a stratum with unbalanced pressure, wherein the traction jacking pipe comprises a reamer and a drill rod, and the reamer is arranged outside the drill rod; the drill rod comprises a drill rod tail end, a drill bit and a grouting hole, and the grouting hole is arranged between the drill rod tail end and the drill bit; the traction jacking pipe further comprises a grouting guide pipe, wherein the grouting guide pipe is used for injecting cement mortar into the drill pipe, so that the cement mortar can be injected into the pressure imbalance stratum from the grouting holes. The jacking equipment comprises a traction jacking pipe and a power device, wherein the power device is used for providing propelling force for the traction jacking pipe. The technical scheme provided by the utility model aims to solve the problems of easy machine clamping of jacking equipment, low jacking efficiency, high risk of manual well-down operation and the like in the existing pipe jacking technology in the face of pressure imbalance stratum such as household building rubbish backfill.

Description

Traction jacking pipe and jacking equipment suitable for pressure imbalance stratum

Technical Field

The utility model belongs to the technical field of jacking pipes, and particularly relates to a traction jacking pipe and jacking equipment suitable for a stratum with unbalanced pressure.

Background

The pipe jacking construction is a pipeline buried construction technology without or with less excavation, and jacking equipment is generally adopted to finish the pipe jacking construction. For example: the slurry balance type pipe jacking construction method is a mechanical automatic pipe jacking construction method which uses full section to cut soil body, uses slurry pressure to balance soil pressure and underground water pressure and uses slurry as a waste soil conveying medium. Existing jacking techniques, for example: the mud-water balance type mechanical jacking technology or the soil pressure balance type mechanical jacking technology has the defects that the technology is only suitable for high-ground water weak stratum, mucky soil, clay layer, silt layer, middle coarse sand layer, soft rock and other stratum with uniform soil quality, is difficult to adapt to the unbalanced stratum such as household building rubbish backfilling and the like, and is easy to cause the problems of equipment jacking, low jacking efficiency, high risk of manual well-down operation and the like.

Disclosure of Invention

The utility model mainly aims to provide a traction jacking pipe and jacking equipment suitable for a pressure imbalance stratum, and aims to solve the problems that the existing jacking pipe technology is easy to cause jacking equipment to clamp a machine, low in jacking efficiency, high in risk of manual well-logging operation and the like when facing the pressure imbalance stratum such as household building rubbish backfill.

In order to achieve the above purpose, the traction jacking pipe suitable for the pressure imbalance stratum provided by the utility model comprises a reamer and a drill rod, wherein the reamer is arranged outside the drill rod; the drill rod comprises a drill rod tail end, a drill bit and a grouting hole, wherein the grouting hole is arranged between the drill rod tail end and the drill bit; the traction jacking pipe further comprises a grouting guide pipe, wherein the grouting guide pipe is used for injecting cement mortar into the drill pipe, so that the cement mortar can be injected into a pressure imbalance stratum from the grouting holes.

Preferably, the traction jacking pipe further comprises a jacking pipe cutter head, the jacking pipe cutter head is provided with a drilling rod hole, and the reamer is installed on the jacking pipe cutter head through the drilling rod hole.

Preferably, the drill rod is in threaded connection with the drill rod hole.

Preferably, the pipe jacking cutterhead is provided with a plurality of reamers, and the reamers evenly encircle the outside of the drill pipe along the axis of the drill pipe.

Preferably, the grouting holes are arranged in a staggered fashion in the drill pipe shaft.

Preferably, the grouting guide pipe is inserted into the drill rod through the tail end of the drill rod.

Preferably, the grouting guide pipe can move along the drill bit towards the tail end of the drill rod when cement mortar is injected into the drill rod.

Preferably, the grouting guide pipe is provided with a grouting nozzle, and the grouting nozzle is arranged at one end of the grouting guide pipe, which is used for being inserted into the drill rod.

Preferably, the traction jacking pipe further comprises a slurry conveying belt, and the slurry conveying belt is used for conveying the minced objects generated by the reamer in the ground layer outwards.

In order to achieve the above purpose, the utility model also provides jacking equipment, which further comprises a power device, wherein the power device is used for providing propulsion force for the traction jacking pipe.

In the technical scheme of the utility model, the reamer is arranged outside the drill rod; the drill rod comprises a drill rod tail end, a drill bit and a grouting hole, wherein the grouting hole is arranged between the drill rod tail end and the drill bit; the traction jacking pipe further comprises a grouting guide pipe, wherein the grouting guide pipe is used for injecting cement mortar into the drill pipe, so that the cement mortar can be injected into a pressure imbalance stratum from the grouting holes. Therefore, in order to carry out pipe jacking construction on the pressure-unbalanced stratum, cement mortar is injected into the pressure-unbalanced stratum through the drill rod, so that the pressure balance of the garbage stratum to be jacked in is maintained. In summary, the utility model only needs to drill the drill rod into the stratum to be jacked, the cement mortar is conveyed to the front end of the drill rod through the grouting guide pipe, grouting is carried out sequentially from the front end to the tail end of the drill rod, the cement mortar is injected into the stratum to be jacked through the grouting holes of the drill rod in a pressurizing pre-grouting mode, the stratum to be jacked is kept in pressure balance by the pressure pre-jacking pressure imbalance, after the stratum in front of jacking is stabilized, the reamer drills, and the minced object is conveyed out of the mud conveying belt of the mud balance pipe jacking machine, so that the problems that jacking equipment is clamped in the stratum to be jacked easily, jacking efficiency is low, manual well descending operation risk is high and the like are solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a traction push pipe cutter head of the present utility model;

FIG. 2 is a schematic view of the traction top pipe drill pipe of the present utility model;

FIG. 3 is a schematic view of the construction of a traction push pipe grouting conduit according to the present utility model;

fig. 4 is a schematic view of an operation state of the jacking apparatus of the present utility model.

Reference numerals illustrate:

1-a pipe-jacking cutter head; 2-reamer; 3-a drill rod hole; 4, the tail end of the drill rod; 5-a drill bit; 6, a drill rod; 7-grouting holes; 8-grouting guide pipe; 9-a power plant; 10-pulling the jacking pipe; 11-a guide rail; 12-bracket.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

The utility model provides a traction jacking pipe and jacking equipment suitable for a stratum with unbalanced pressure.

Referring to fig. 1 to 4, the traction jacking pipe 10 suitable for the pressure imbalance stratum comprises a reamer 2 and a drill pipe 6, wherein the reamer 2 is arranged outside the drill pipe 6; the drill rod 6 comprises a drill rod tail end 4, a drill bit 5 and a grouting hole 7, wherein the grouting hole 7 is arranged between the drill rod tail end 4 and the drill bit 5; the traction jacking pipe 10 further comprises a grouting conduit 8, wherein the grouting conduit 8 is used for injecting cement mortar into the drill pipe 6 so that the cement mortar can be injected into a pressure imbalance stratum from the grouting holes 7.

In the technical scheme of the utility model, in order to carry out pipe jacking construction on the pressure-unbalanced stratum, cement mortar (for example, early strength cement mortar) is injected into the pressure-unbalanced stratum through the drill rod 6, so that the pressure balance of the garbage stratum to be jacked in is kept. Specifically, the following description will take early strength cement mortar as an example. According to the utility model, the drill rod 6 is drilled into a stratum to be jacked, the early strength cement mortar is conveyed to the front end of the drill rod 6 through the grouting guide pipe 8, grouting is carried out sequentially from the front end to the tail end of the drill rod 6, the early strength cement mortar is injected into the stratum to be jacked through the grouting holes 7 of the drill rod 6 by adopting a pressurizing pre-grouting mode, the stratum to be jacked is kept in pressure balance after the early strength cement mortar is solidified, the reamer 2 drills after the stratum in front of jacking is stabilized, and the ground is conveyed out of the mud conveying belt of the traction jacking pipe 10, so that the problems that jacking equipment is blocked, jacking efficiency is low, manual well-down operation risk is high and the like are easily caused when jacking pipe construction is carried out on the stratum with unbalanced pressure are solved.

The traction jacking pipe 10 may be a muddy water balanced type mechanical jacking pipe or a soil pressure balanced type mechanical jacking pipe, further, the traction jacking pipe 10 of the present utility model may be other types of jacking pipes for pressure imbalance stratum, the type of jacking pipe is not limited thereto, and other types of jacking pipes are also included in the protection scope of the present utility model.

Further, the reamer 2 is disposed outside the drill rod 6, which may be specifically: the reamer 2 is integrally formed outside the drill rod 6, and the drill rod 6 can be detachably connected or fixedly connected with the reamer 2.

The drill rod 6 may be a tubular structure, and may be a circular tube, or may be a tube of other shapes, and the tail end 4 of the drill rod is formed with an opening communicating with the inner space of the drill rod 6.

Preferably, the traction jacking pipe 10 further comprises a jacking pipe cutter head 1, the jacking pipe cutter head 1 is provided with a drilling rod hole 3, and the reamer 2 is installed on the jacking pipe cutter head 1 through the drilling rod hole 3. The pipe jacking cutter head 1 adopts a reamer type cutter head, and has high cutting efficiency and stable performance.

Further, the shape of the push bench cutterhead 1 is not limited to a circle, and other cutterheads are included in the protection scope of the present utility model. The drill rod hole 3 is preferably located at the center of the pipe jacking cutter head 1. And a reaming or tooth socket is arranged on the pipe jacking cutter head 1 and is used for connecting the reamer 2.

Preferably, the drill rod 6 is screwed into the drill rod bore 3. The threaded connection mode ensures that the connection between the drill rod 6 and the drill rod hole 3 is reliable, the falling-off between the two connecting pieces is avoided, and meanwhile, the disassembly and the installation processes are simpler. Of course, the drill rod 6 and the drill rod hole 3 may also be detachably connected or fixedly connected, for example: bolted or welded.

Preferably, the pipe jacking cutterhead 1 is provided with a plurality of reamer 2, and the reamer 2 uniformly surrounds the outside of the drill pipe 6 along the axis of the drill pipe 6. The number of the reamers 2 may be set as required, and in this embodiment, the number of the reamers 2 is 4. Of course, the number of the reamer 2 is not limited to this, and 1 or more than 1 reamer 2 is equally included in the protection scope of the present utility model.

Preferably, the grouting holes 7 are arranged in a staggered manner in the shank of the drill pipe 6. The size and the density of the grouting holes 7 are determined according to soil layer characteristic parameters such as water content, porosity, plastic limit and the like and stratum properties, for example: the surrounding rock stratum is a muddy stratum and a sandy stratum, and the grouting holes 7 are arranged densely. The staggered form may particularly be a quincuncial staggered distribution along the axial direction and the circumferential direction of the drill rod 6.

Preferably, the grouting conduit 8 is inserted into the drill pipe 6 through the tail end 4 of the drill pipe, the tail end 4 of the drill pipe is positioned in the pipe pushing jack, and the grouting conduit 8 can be a hose, for example: one end of the plastic hose is directly connected with the grouting pool, and the pipe diameter of the grouting pipe 8 is adjusted according to grouting flow and grouting pressure. Of course, the grouting duct 8 may also be a rigid pipe, such as: and (3) a steel pipe.

Preferably, the grouting conduit 8 can move along the drill bit 5 to the drill rod tail end 4 when cement mortar is injected into the drill rod 6, grouting sequences are from the drill bit 5 to the drill rod tail end 4, grouting is performed while the grouting conduit 8 is pulled back during grouting, so that the cement mortar and a soil layer are fully combined, early-strength cement mortar is selected for the cement mortar, initial setting time is shortened, and different environmental requirements are met by adjusting parameters such as cement mortar initial setting time, grouting pressure and the like. The grouting guide pipe 8 can adopt manual back hauling or mechanical back hauling during grouting.

Preferably, the grouting pipe 8 is provided with a grouting nozzle, the grouting nozzle is arranged at one end of the grouting pipe 8, which is used for being inserted into the drill pipe 6, and cement mortar is pressed into the surrounding soil body in a high-pressure grouting mode, so that the pressure balance of the surrounding soil body is ensured. The grouting spray heads are preferably high-pressure grouting spray heads, and the number of the spray heads can be one or more.

Preferably, the traction jacking pipe 10 further comprises a mud conveyer belt, and the mud conveyer belt is positioned inside the traction jacking pipe 10 and is used for conveying the reamed objects generated by the reamer 2 in the ground into the ground outwards.

Referring to fig. 4, in order to achieve the above objective, the present utility model further provides a jacking device, which includes the traction jacking pipe 10, and further includes a power device 9, where the power device 9 is configured to provide a propulsion force to the traction jacking pipe 10. Specifically, the jacking equipment further comprises a guide rail 11 and a bracket 12. The power device 9 is mounted on the bracket 12 and is used for providing propulsion force for the traction jacking pipe 10. The guide rail 11 is fixed on a working well bottom plate and serves as a rail for the initial guiding of the traction jacking pipe 10 and a pipe joint splicing platform. During operation, the power device 9 provides propulsion force for the traction jacking pipe 10 and the pipe joint, and the traction jacking pipe 10 and the pipe joint can jack forward along the track set by the guide rail 11, so that construction on a stratum with unbalanced pressure is realized.

The power device 9 is provided with an oil cylinder and a pump station, the oil cylinder is arranged in the pipe-jacking working well and is uniformly arranged on two sides of the pipe wall, and most of the power device is in the form of a telescopic hydraulic driving double-acting oil cylinder. The pump station is arranged beside the working wellhead and supplies oil and returns oil to the oil cylinder, and the pump station is preferably arranged indoors (for example, a pump station operation room is built beside the wellhead). The guide rail 11 is made of a steel word or a channel steel, and the installation is ensured to be firm and smooth.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather utilizing equivalent structural changes made in the present utility model description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims (10)

1. Traction jacking pipe suitable for unbalanced pressure stratum, its characterized in that: the reamer comprises a reamer (2) and a drill rod (6), wherein the reamer (2) is arranged outside the drill rod (6); the drill rod (6) comprises a drill rod tail end (4), a drill bit (5) and a grouting hole (7), wherein the grouting hole (7) is arranged between the drill rod tail end (4) and the drill bit (5); the traction jacking pipe (10) further comprises a grouting guide pipe (8), wherein the grouting guide pipe (8) is used for injecting cement mortar into the drill pipe (6) so that the cement mortar can be injected into a pressure imbalance stratum from the grouting holes (7).

2. Traction top pipe suitable for pressure imbalance stratum according to claim 1, characterized in that the traction top pipe (10) further comprises a top pipe cutter head (1), the top pipe cutter head (1) is provided with a drill pipe hole (3), and the reamer (2) is mounted on the top pipe cutter head (1) through the drill pipe hole (3).

3. Traction top pipe suitable for use in a pressure imbalance formation according to claim 2, characterised in that the drill pipe (6) is screwed with the drill pipe hole (3).

4. Traction top pipe suitable for pressure imbalance formations according to claim 2, characterized in that the top pipe cutterhead (1) is provided with a plurality of the reamers (2), the reamers (2) being evenly encircling the drill pipe (6) outside along the axis of the drill pipe (6).

5. Traction top pipe suitable for use in a pressure imbalance formation according to claim 1, characterised in that the grouting holes (7) are arranged in a staggered manner in the shaft of the drill pipe (6).

6. Traction top pipe suitable for pressure imbalance formations according to claim 1, characterized in that the grouting conduit (8) is plugged inside the drill pipe (6) through the drill pipe tail end (4).

7. Traction top pipe suitable for use in a pressure imbalance formation according to claim 6, characterised in that the grouting conduit (8) is movable along the drill bit (5) towards the drill pipe end (4) when cement mortar is injected into the interior of the drill pipe (6).

8. Traction top pipe suitable for use in a pressure imbalance formation according to claim 6, characterised in that the grouting conduit (8) is provided with a grouting nozzle arranged at one end of the grouting conduit (8) for insertion into the interior of the drill pipe (6).

9. Traction top pipe suitable for use in a pressure imbalance formation according to any one of claims 1-8, further comprising a mud conveyer belt for conveying the minced material produced by the reamer (2) mincing the formation outwards.

10. Jacking equipment, its characterized in that: comprising a traction top pipe (10) according to any one of claims 1-9, further comprising a power device (9), said power device (9) being adapted to provide propulsion to said traction top pipe (10).