CN217558330U

CN217558330U - Pipe jacking business turn over entrance to a cave reinforced structure

Info

Publication number: CN217558330U
Application number: CN202221515076.4U
Authority: CN
Inventors: 沈群峰; 梅玉刚; 蒲素云; 黄凯
Original assignee: HUAYU CONSTRUCTION GROUP CO Ltd
Current assignee: HUAYU CONSTRUCTION GROUP CO Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-10-11
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a push pipe tunnel construction technical field especially relates to a push pipe business turn over entrance to a cave reinforced structure. The fixing part comprises a fixing section and a guide section, the fixing section is inserted into the construction opening, the guide section is arranged outside the construction opening, the fixing section is provided with a plurality of reinforcing pipes inserted into soil around the construction opening, and the end part of the guide section is provided with a sealing cover. The utility model discloses a design mounting body and reinforcement pipe realize guaranteeing the stability of construction entrance to a cave to the reinforcement of the soil body around the construction entrance to a cave, avoid the construction entrance to a cave to take place to warp the damage, simultaneously through the reinforcement pipe to the soil body around the construction entrance to a cave grout, can avoid the construction entrance to a cave around the soil body take place to subside and scatter, form firm and confined business turn over entrance to a cave and transfer the piece.

Description

Pipe jacking business turn over entrance to a cave reinforced structure

Technical Field

The utility model relates to a push pipe tunnel construction technical field especially relates to a push pipe business turn over entrance to a cave reinforced structure.

Background

The pipe jacking method is used as a trenchless construction method of a tunnel, and the main working principle is as follows: firstly digging two foundation pit wells, namely a jacking pipe launching well and a receiving well, on the ground at a certain distance; and then, in the launching well, overcoming the friction force between the pipeline and the surrounding soil by means of the jacking force generated by jacking equipment, jacking the pipeline into the soil according to the designed gradient, and transporting away the earthwork until a tool or a heading machine is pushed into the receiving well and hoisted, and meanwhile, burying the pipeline between the two wells. Wherein, during the push pipe construction, need set up the construction entrance to a cave in the top working face department of launching well and receiving well, the diameter of construction entrance to a cave slightly is greater than the diameter of push pipe pipeline, the construction entrance to a cave and wait to bury underground and form annular cavity between the pipeline, form the mud cover through injecting into mud in to annular cavity, can reduce the frictional force when waiting to bury underground the pipeline top and advance, make the pipeline top advance more smoothly. However, the construction openings of the existing launching well and receiving well are reinforced only by means of reserved concrete curing, the sealing performance and the firmness are low, the construction openings are easy to be gradually damaged and lose efficacy along with the lapse of the construction time of the jacking pipe, and the engineering quality of jacking pipe construction is reduced.

Patent document CN212297912U provides such a structure for reinforcing a hole outlet of a push pipe receiving well, which includes an embedded steel ring, one end of which extends from a side wall in the receiving well, an extending end mounting plate circumferentially arranged on the embedded steel ring, a reinforcing plate detachably connected to the mounting plate, a sleeve vertically connected to the reinforcing plate, and a water stop cushion layer arranged on an inner side surface of the sleeve; one end of the sleeve penetrates through the reinforcing plate, and the axis of the sleeve and the axis of the embedded steel ring are on the same straight line. But it is only suitable for the situation that the soil around the opening is relatively stable, and is not suitable for the soil which is easy to settle, such as soft soil, water-rich liquefied sand layer, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the above problem, a push pipe business turn over entrance to a cave reinforced structure is provided.

The utility model provides a technical scheme of problem provide a push pipe business turn over entrance to a cave reinforced structure, including pipy mounting, the mounting is including inserting the intraoral canned paragraph in construction entrance to a cave, and arrange in the outside direction section in construction entrance to a cave, the canned paragraph is equipped with a plurality of insertions the reinforcing pipe in the soil body around the construction entrance to a cave, the tip of direction section is equipped with sealed lid.

As the utility model discloses preferably, the mounting includes a plurality of interconnect forms the section of jurisdiction of mounting body.

As the utility model discloses preferably, follow the cross-sectional direction of section of jurisdiction is equipped with a plurality of running through the connecting hole of section of jurisdiction, the reinforced pipe passes through the connecting hole inserts in the soil body around the construction entrance to a cave.

Preferably, the reinforcing pipe comprises an insertion end inserted into the soil body, and the insertion end is conical.

As the utility model discloses preferably, the reinforced pipe still include with the link that the canned paragraph is connected, the link is equipped with fills the mouth, the pipe wall of reinforced pipe be equipped with a plurality of with fill the hole that fills of mouth intercommunication.

Preferably, the utility model discloses still wrap the sealing plug that is used for shutoff the mouth that fills.

As the utility model discloses preferably, the internal diameter of mounting is greater than the external diameter of waiting to bury underground the pipeline, makes the mounting with wait to bury underground and form the ring chamber between the pipeline.

As the utility model discloses preferably, sealed lid is including inserting sealed piece in the ring cavity, sealed piece include with wait to bury underground the first seal section of the outer wall butt of pipeline and by the inner wall of mounting is to waiting to bury the second seal section of the outer wall direction slope of pipeline underground.

The utility model has the advantages that:

1. the reinforcement of the soil body around the construction opening is realized through the design of the fixing piece body and the reinforcing pipe, the stability of the construction opening is guaranteed, the construction opening is prevented from deforming and damaging, meanwhile, the soil body around the construction opening is grouted through the reinforcing pipe, the settlement and scattering of the soil body around the construction opening can be avoided, and the stable and closed inlet and outlet opening adjusting piece is formed.

2. The sealing cover can prevent the loss of the anti-drag slurry pressed in during fixed jacking construction, and the stability of the construction process is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of a pipe jacking entrance and exit hole reinforcing structure;

FIG. 2 is a sectional view of a pipe jacking entrance and exit hole reinforcing structure mounting structure;

FIG. 3 is a schematic view of a segment construction;

in the figure: 1. a fixing member; 11. a fixing body; 12. a duct piece; 121. connecting holes; 2. a fixed section; 3. a guide section; 4. reinforcing the pipe; 41. an insertion end; 42. a connecting end; 43. an infusion port; 44. filling a hole; 5. a sealing cover; 51. a sealing block; 511. a first seal section; 512. a second seal section; 6. and (4) an annular cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The utility model discloses a push pipe business turn over entrance to a cave reinforced structure, as shown in fig. 1 and 2, including pipy mounting 1, mounting 1 is including inserting the intraoral canned paragraph 2 in construction entrance to a cave, and arranges the outside direction section 3 in construction entrance to a cave in, and canned paragraph 2 is equipped with a plurality of reinforced pipes 4 that insert in the soil body around the construction entrance to a cave, and the tip of direction section 3 is equipped with sealed lid 5.

In this embodiment, the construction entrance to a cave that sets up on the lateral wall of launching well is for advancing the entrance to a cave, and the construction entrance to a cave that sets up on the lateral wall of receiving well is for going out the entrance to a cave, the utility model discloses a push pipe business turn over entrance to a cave reinforced structure sets up respectively in entering entrance to a cave and going out entrance to a cave department for prevent to advance the entrance to a cave and go out the earth around the entrance to a cave and take place to subside and scatter, the drag reduction mud loss of impressing during the construction can be prevented to the while, in order to form firm and confined business turn over hole condition.

In the embodiment, the fixing member 1 is made of steel and is integrally tubular, the outer diameter of the fixing member 1 is the same as the inner diameter of the hole inlet or the hole outlet, so that when the fixing member 1 is inserted into the construction hole, the outer wall of the fixing member 1 is abutted against the inner wall of the construction hole, a certain supporting force is generated on the soil around the construction hole, and the stability of the shape and the size of the construction hole is ensured; the internal diameter of mounting 1 is greater than the external diameter of the pipeline of waiting to bury underground for when waiting to bury underground the pipeline and being pushed into by the mouth of pipe department of mounting 1, waiting to bury underground and form an annular chamber 6 between the outer wall of pipeline and the inner wall of mounting 1, form the mud cover through filling into mud in 6 to the annular chamber, can reduce the frictional force when waiting to bury underground the pipeline jack-in, make the push pipe construction more smooth and easy.

In this embodiment, in order to prevent the slurry in the annular cavity 6 from flowing back and leaking, the end of the guiding segment 3 is provided with a sealing cover 5, the sealing cover 5 comprises a sealing block 51 inserted into the annular cavity 6, and the sealing block 51 comprises a first sealing segment 511 abutting against the outer wall of the pipeline to be buried and a second sealing segment 512 inclined towards the outer wall of the pipeline to be buried from the inner wall of the fixing member 1. When the pressure in the annular cavity 6 is large due to underground water seepage and the like, the water pressure compresses the second sealing section 512 towards the sealing cover 5, at the moment, the second sealing section 512 is obliquely arranged, the water pressure only enables the second sealing section 512 to be more tightly abutted against the outer wall of the pipeline to be buried, the second sealing section cannot be turned outwards due to overlarge water pressure, and the sealing structure can be prevented from losing efficacy.

In this embodiment, the construction entrance to a cave is arranged in to the direction section 3 of mounting 1 outside, outwards extends along the axis of construction entrance to a cave, can treat to bury underground the pipeline and play the guiding orientation effect to avoid waiting to bury underground the pipeline and be hung the top and go into or hang and take place to rock when leaving the construction entrance to a cave, cause the damage to the construction entrance to a cave.

In the present embodiment, as shown in fig. 1 and 3, in order to facilitate the installation of the fixing member 1, the fixing member 1 is designed to be split, that is, formed by splicing a plurality of arc-shaped segments 12. Specifically, the cross-section of jurisdiction 12 is the arc, is equipped with the bayonet socket that is used for the concatenation respectively along arc extending direction both sides, and the mutual butt lock of adjacent bayonet socket of two adjacent sections of jurisdiction 12 forms pipe form mounting body 11. Wherein, two adjacent segments 12 can be connected by screws or welding.

In this embodiment, the fixing section 2 of the fixing member 1 inserted into the construction opening is provided with a plurality of reinforcing pipes 4, and the reinforcing pipes 4 are arranged along the circumferential direction of the fixing section 2 and radially inserted into the soil around the construction opening to increase the binding force between the fixing member 1 and the soil around the construction opening. Further, the inside cavity of reinforced pipe 4 is the tubulose, including inserting the end 41 that inserts in the soil body, and the link 42 of being connected with canned paragraph 2, and the link 42 is equipped with the mouth of pouring 43, is equipped with a plurality of perfusion holes 44 that communicate with the mouth of pouring 43 on the pipe wall of reinforced pipe 4 for can carry out the slip casting to the soil body around the construction entrance to a cave through reinforced pipe 4 and consolidate, with the physical and mechanical characteristics of improvement peripheral stratum, make the soil body around the construction entrance to a cave more firm.

Specifically, a plurality of connecting holes 121 penetrating through the duct piece 12 are formed in the cross section direction of the duct piece 12, and the reinforcing pipe 4 is inserted into the soil around the construction hole through the connecting holes 121. The reinforcing pipe 4 is inserted into the soil around the construction hole from the connecting hole 121 by piling.

In this embodiment, each pipe piece 12 is provided with a plurality of connecting holes 121, which can be designed according to the size of the construction opening and the hardness of the soil around the construction opening, such as the number, diameter, length, and type of the reinforcing pipes 4. Wherein, the radiation angle of the reinforcing pipe 4 inserted into the soil body can be adjusted by selecting the connecting holes 121 at different positions to insert the reinforcing pipe 4.

In this embodiment, the insertion end 41 of the reinforced pipe 4 is tapered, so that the reinforced pipe 4 can better break the soil body, and the reinforced pipe 4 can be driven into the soil body around the construction hole more easily.

In this embodiment, a sealing plug (not shown) for sealing off the pouring opening 43 is further included.

In this embodiment, a rubber plug (not shown) for blocking the excessive connecting holes 121 is further included.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a push pipe business turn over entrance to a cave reinforced structure which characterized in that: including pipy mounting (1), mounting (1) is including inserting intraoral canned paragraph (2) of construction hole, and arrange in outside direction section (3) of construction hole, canned paragraph (2) are equipped with a plurality of insertions reinforcement pipe (4) in the soil body around the construction hole, the tip of direction section (3) is equipped with sealed lid (5).

2. The pipe-jacking entrance-exit hole reinforcing structure of claim 1, wherein: the fixture (1) comprises a plurality of segments (12) which are connected to each other to form a fixture body (11).

3. The pipe jacking entrance-exit hole reinforcing structure of claim 2, wherein: a plurality of connecting holes (121) penetrating through the duct piece (12) are formed in the cross section direction of the duct piece (12), and the reinforcing pipe (4) is inserted into the soil body around the construction hole through the connecting holes (121).

4. The pipe jacking entrance-exit hole reinforcing structure of claim 1, wherein: the reinforcing pipe (4) comprises an insertion end (41) inserted into the soil body, and the insertion end (41) is conical.

5. The pipe jacking entrance-exit hole reinforcing structure of claim 4, wherein: the reinforcing pipe (4) further comprises a connecting end (42) connected with the fixing section (2), the connecting end (42) is provided with a filling opening (43), and the pipe wall of the reinforcing pipe (4) is provided with a plurality of filling holes (44) communicated with the filling opening (43).

6. The pipe jacking entrance-exit hole reinforcing structure of claim 5, wherein: and the device also comprises a sealing plug used for plugging the pouring opening (43).

7. The pipe jacking entrance-exit hole reinforcing structure of claim 1, wherein: the inner diameter of the fixing piece (1) is larger than the outer diameter of the pipeline to be buried, so that an annular cavity (6) is formed between the fixing piece (1) and the pipeline to be buried.

8. The pipe jacking entrance-exit hole reinforcing structure of claim 7, wherein; the sealing cover (5) comprises a sealing block (51) inserted into the annular cavity (6), and the sealing block (51) comprises a first sealing section (511) abutted against the outer wall of the pipeline to be buried and a second sealing section (512) inclined towards the outer wall of the pipeline to be buried from the inner wall of the fixing piece (1).