CN209875169U

CN209875169U - Grouting pipe

Info

Publication number: CN209875169U
Application number: CN201920297645.4U
Authority: CN
Inventors: 张朝远; 郑国东; 刘光裕; 赖军
Original assignee: Chongqing Bo Shuo Construction Engineering Co Ltd
Current assignee: Chongqing Bo Shuo Construction Engineering Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-12-31
Anticipated expiration: 2029-03-08

Abstract

The utility model discloses a slip casting pipe, this slip casting pipe establishes the cooperation with the slip casting pot head that bores on the tunnel and establish, and this slip casting pipe includes the body, the body is close to its discharge end position and is equipped with and prevents moving back the subassembly, prevent moving back the subassembly including setting up the elastic material on the body prevent moving back the gum cover, prevent moving back the gum cover and establish a plurality of hollow round platforms outside this body including body and the cover of hollow cylinder structure, a plurality of hollow round platforms radially set up side by side along the body, and the tip of every hollow round platform all is close to the setting of body discharge end, hollow round platform tip external diameter is less than slip casting hole internal diameter and hollow round platform main aspects external diameter is greater than the slip casting hole internal diameter. The utility model discloses directly set up on the slip casting body and prevented moving back the gum cover, make the slip casting pipe can prevent the slip casting pipe from retreating at slip casting operation process under the not big condition of slip casting pressure, compare in adopting fixing device to fix the slip casting pipe, it is more convenient to operate.

Description

Grouting pipe

Technical Field

The utility model belongs to the technical field of two lining slip casting in tunnel, concretely relates to slip casting pipe.

Background

As shown in fig. 1, tunnel lining construction causes holes 101 to appear in the back of lining concrete 1, especially in the arch crown, due to the limitation of concrete. The concrete is not closely knit, very big influence the bulk strength of lining concrete, simultaneously, the slip casting has the prevention of seepage function to a certain extent, consequently, must closely knit the hole behind the lining concrete with backfill slip casting in tunnel construction, ensure the bulk strength of lining concrete, reinforcing waterproof function takes drilling and pours cement mortar into to the position that has the cavity at the back of the lining, with lining back cavity packing closely knit.

When grouting operation is carried out, proper grouting holes are drilled according to the sizes of the holes, the grouting pipes penetrate through the grouting holes to enable the discharge ends of the grouting pipes to be located in the holes, grouting filling materials are led in the feed ends of the grouting pipes, MU30 cement mortar can be selected as the grouting filling materials, and reasonable grouting pressure is controlled. And after grouting filling is finished and qualified, cutting exposed guide pipes, and plugging drilled holes of the secondary lining by adopting micro-expansion cement to finish grouting.

Above-mentioned in-process, when the hole is small, after inserting the slip casting pipe in the hole, when beginning slip casting, slip casting filling material causes the recoil under the inertial action easily according to certain slip casting pressure when spouting out from the slip casting pipe discharge end and the contact of hole top, makes slip casting pipe discharge end follow the hole in to slip casting hole position, influence the slip casting effect.

In order to solve the problems, in the prior art, when grouting operation is carried out, a grouting pipe is fixed through a fixing device, so that the grouting pipe is prevented from backing up; fixing device among the prior art generally includes a fixed plate, and the fixed plate setting is on the operation panel in the tunnel, and the slip casting pipe passes the fixed plate, still can set up multiunit adjusting screw on the fixed plate, and relative setting for the center is managed in slip casting axle center to every group adjusting screw tip, still can set up laminating slip casting pipe outlying arc support at every relative tip of group adjusting screw, makes slip casting pipe and fixed plate fix through adjusting multiunit adjusting screw.

The mode of fixing the slip casting pipe is firm, also enables the slip casting pipe to keep certain stability when slip casting pressure is big, but when slip casting pressure is less, when adopting above-mentioned fixing device to fix the slip casting pipe, fixed slip casting pipe complex operation, it is not convenient, so need provide one kind earlier urgently can place the slip casting pipe that the slip casting pipe backed up when slip casting pressure is less.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model provides a slip casting pipe, this slip casting pipe can effectively place the problem that backs of slip casting pipe when the slip casting when slip casting pressure is less, make the slip casting operation more convenient, practice thrift slip casting operation operating procedure, improve slip casting operating efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a slip casting pipe, this slip casting pipe establishes the cooperation with the slip casting pot head that bores on the tunnel and establish, and this slip casting pipe includes the body, the body is close to its discharge end position and is equipped with and prevents moving back the subassembly, prevent moving back the subassembly including setting up the elastic material on the body prevent moving back the gum cover, prevent moving back the gum cover and establish this external a plurality of hollow round platforms including body and the cover of hollow cylinder structure, a plurality of hollow round platforms radially set up side by side along the body, and the tip of every hollow round platform all is close to the setting of body discharge end, hollow round platform tip external diameter is less than slip casting downthehole diameter and hollow round platform main aspects external diameter is greater than the slip casting downthehole diameter.

Further, the body is including the feeding section, reducing section, the ejection of compact section that set gradually, and wherein the cover that prevents moving back the gum cover is established on the reducing section, the reducing section is the horizontal segment that the external diameter is less than feeding section external diameter and ejection of compact section external diameter, the horizontal segment periphery is equipped with anti-skidding coating.

Further, the discharge section comprises a first straight pipe section, a spherical section and a second straight pipe section which are sequentially connected, the reducing section is arranged between the feeding section and the first straight pipe section, and a plurality of discharge holes are annularly formed in the peripheries of the first straight pipe section and the spherical section.

Furthermore, the outer diameter of the small end of the hollow circular truncated cone is smaller than the inner diameter of the grouting hole by 3-4 mm, and the outer diameter of the large end of the hollow circular truncated cone is larger than the inner diameter of the grouting hole by 8-12 mm.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses directly set up on the slip casting body and prevented moving back the gum cover, prevent moving back the gum cover and pass the slip casting hole along with the body discharge end and get into in the hole, because prevent moving back the structure of gum cover special, be in the elastic shrinkage state when preventing moving back the gum cover when the slip casting is downthehole, resume deformation after passing the slip casting hole, prevent moving back the gum cover and can erect the tip that is close to the hole in the slip casting hole, prevent moving back a plurality of hollow round platforms that set up on the gum cover every and have the effect that prevents that the slip casting pipe from withdrawing from the slip casting hole, can prevent the slip casting pipe retreating at slip casting operation process under the not big condition of slip casting pressure, compare in adopting fixing device to carry out the fixed time to the slip casting pipe, it is more convenient to operate.

Drawings

FIG. 1 shows the position relationship between the tunnel lining and the holes of the present invention;

FIG. 2 is a schematic view of the grouting pipe and the grouting hole of the present invention;

FIG. 3 is a schematic view of the grouting pipe and the grouting hole of the present invention in another state;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the pipe body and the anti-receding rubber sleeve of the present invention;

fig. 6 is an explosion diagram of the cooperation of the pipe body and the anti-receding rubber sleeve.

In the figure, the grouting hole 11, the pipe body 2, the feeding section 21, the reducing section 22, the discharging section 23, the first straight pipe section 231, the spherical section 232, the third straight pipe section 233, the discharging port 2311, the anti-stripping rubber sleeve 3, the body 31 and the hollow circular truncated cone 32.

Detailed Description

As shown in fig. 1-6, the utility model relates to a slip casting pipe, this slip casting pipe establishes the cooperation with the 11 covers of slip casting hole that bore on the tunnel, and this slip casting pipe includes body 2, body 2 is close to its discharge end position and is equipped with and prevents moving back the subassembly, prevent moving back the subassembly including setting up the elastic material on body 2 prevent moving back gum cover 3, prevent moving back gum cover 3 and can adopt elastic rubber. The anti-back rubber sleeve 3 comprises a body 31 of a hollow cylindrical structure and a plurality of hollow round tables 32 sleeved outside the body 31, the hollow round tables 32 are arranged side by side along the radial direction of the body 31, the small end of each hollow round table 32 is close to the discharge end of the pipe body 2, and the outer diameter of the small end of each hollow round table 32 is smaller than the inner diameter of the grouting hole 11, and the outer diameter of the large end of each hollow round table 32 is larger than the inner diameter of the grouting hole 11. The utility model discloses directly set up on the slip casting body and prevented moving back gum cover 3, prevent moving back gum cover 3 and pass in slip casting hole 11 gets into the hole along with 2 discharge ends of body, because the structure of preventing moving back gum cover 3 is special, be in the elastic shrinkage state when preventing moving back gum cover 3 in slip casting hole 11, resume deformation after passing slip casting hole 11, prevent moving back gum cover 3 and can erect the tip that is close to the hole at slip casting hole 11, prevent moving back a plurality of hollow round platforms 32 that set up on the gum cover 3 every have the effect that prevents that the slip casting pipe from withdrawing from slip casting hole 11, can prevent the slip casting pipe retreating at slip casting operation process under the not big condition of slip casting pressure, compare in the time of adopting fixing device to fix the slip casting pipe, it is more convenient to operate.

The utility model discloses the glue film 3 that moves back that prevents that sets up can be integral type structure with body 2, but body 2 is high density polyethylene material or steel more, and it is fixed difficult with the glue film 3 that moves back that prevents of elastic rubber material, and fixed strength is also general, but, because the slip casting pipe passes one section of slip casting hole 11 and can stay in slip casting hole 11 at last, be equivalent to the slip casting pipe and be disposable pipe, so also can adopt sticky or welded mode will prevent moving back glue film 3 and fix on body 2. The utility model discloses an optimize body 2 and prevent moving back being connected of gum cover 3, the connection degree of difficulty between the two, the utility model discloses the gum cover 3 that prevents moving back that sets up is established on body 2, can not change with body 2's position when preventing moving back gum cover 3 and passing injected hole 11 for the messenger, the utility model discloses will body 2 sets to the feeding section 21, reducing section 22, the play work or material section 23 that connect gradually, and wherein prevent moving back the cover of gum cover 3 and establish on reducing section 22, reducing section 22 is less than the horizontal segment of feeding section 21 external diameter and play work or material section 23 external diameter for the external diameter, the horizontal segment periphery is equipped with anti-skidding coating, anti-skidding coating can be: epoxy anti-skid coatings, polyurethane anti-skid coatings, alkyd anti-skid coatings, chlorinated rubber anti-skid coatings, and the like. When installing and preventing moving back gum cover 3, because prevent moving back gum cover 3 and have elasticity, will prevent moving back gum cover 3 and follow 2 feed ends of body or discharge end entering direct cover and establish on the reducing section 22 of body 2, as shown in fig. 6, because the external diameter of reducing section 22 is less than feed section 21 external diameter and the 23 external diameters of discharge section, make prevent moving back gum cover 3 and just can not easily follow reducing section 22 and move to feed section 21 or discharge section 23 after entering reducing section 22, and for increasing reducing section 22 and preventing moving back the laminating of gum cover 3, still be equipped with anti-skidding coating in reducing section 22 periphery.

For reducing the bounce in 2 discharge ends direct-flushing holes of body, the utility model discloses the play ejection of compact section 23 that sets up is including the first straight tube section 231, globular section 232 and the second straight tube section that connect gradually, and reducing section 22 sets up between feeding section 21 and first straight tube section 231, wherein first straight tube section 231 all encircles with globular section 232 periphery and is equipped with a plurality of discharge gates 2311. When grouting is started, grouting filler is firstly led out from the discharge port 2311 of the first straight pipe section 231, the grouting filler cannot be directly sprayed with the top of the hole, impact force which enables the pipe body 2 to move backwards is reduced, meanwhile, hole filling treatment can be carried out on the hole from the periphery, when the discharge port 2311 of the first straight pipe section 231 is blocked by the gradually-rising grouting filler, the grouting filler newly led in the pipe body 2 is discharged from the discharge port 2311 of the spherical section 232, finally, the grouting filler is discharged from the discharge end of the second straight pipe section, and the grouting filler is injected from the side, close to the tunnel, of the hole and far away from the tunnel side, so that the flowing time of the filler in the hole is reduced, and the grouting.

Because the utility model discloses the set up prevent moving back gum cover 3 can wholly pass slip casting hole 11, again for the messenger pass slip casting hole 11 after prevent moving back gum cover 3 can not fall back under the effect of slip casting impact force can the slip casting hole 11 in, the utility model discloses the hollow round platform 32 tip external diameter that sets up is less than slip casting hole 11 internal diameter 3 ~ 4mm, hollow round platform 32 main aspects external diameter is greater than slip casting hole 11 internal diameter 8 ~ 12 mm.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a cooperation is established to slip casting pipe, the slip casting pot head that this slip casting pipe and tunnel went up to establish, and this slip casting pipe includes body, its characterized in that: the body is close to its discharge end position and is equipped with and prevents moving back the subassembly, prevent moving back the subassembly including setting up the elastic material on the body prevent moving back the gum cover, prevent moving back the gum cover and establish at this external a plurality of hollow round platforms including the body and the cover of hollow cylinder structure, a plurality of hollow round platforms radially set up side by side along the body, and the tip of every hollow round platform all is close to the setting of body discharge end, hollow round platform tip external diameter is less than slip casting hole internal diameter and hollow round platform main aspects external diameter is greater than the slip casting hole internal diameter.

2. The grouting pipe according to claim 1, wherein: the body is including the feeding section, reducing section, the ejection of compact section that set gradually, and wherein the cover that prevents moving back the gum cover is established on the reducing section, the reducing section is the horizontal segment that the external diameter is less than feeding section external diameter and ejection of compact section external diameter, the horizontal segment periphery is equipped with anti-skidding coating.

3. The grouting pipe according to claim 2, characterized in that: the discharging section comprises a first straight pipe section, a spherical section and a second straight pipe section which are sequentially connected, the reducing section is arranged between the feeding section and the first straight pipe section, and a plurality of discharging holes are annularly formed in the peripheries of the first straight pipe section and the spherical section.

4. The grouting pipe according to claim 3, wherein: the outer diameter of the small end of the hollow circular truncated cone is smaller than the inner diameter of the grouting hole by 3-4 mm, and the outer diameter of the large end of the hollow circular truncated cone is larger than the inner diameter of the grouting hole by 8-12 mm.