CN219176342U

CN219176342U - Auxiliary tool for grouting of underground space advanced small guide pipe

Info

Publication number: CN219176342U
Application number: CN202223111714.9U
Authority: CN
Inventors: 王晓方; 杨诚; 李家亮; 杨宏伟; 钟星武; 张正才
Original assignee: Yunnan Construction and Investment Holding Group Co Ltd
Current assignee: Yunnan Construction and Investment Holding Group Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-06-13
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to the technical field of underground space support, in particular to an auxiliary tool for grouting an underground space advanced small guide pipe, which consists of a hose end and a small guide pipe end, wherein the front end of the hose end is provided with a pagoda joint, and the rear end of the hose end is provided with a first quick joint female joint; the front end of the small guide pipe is provided with a first quick connector male head, the rear end of the small guide pipe is provided with a second quick connector female head, and the second quick connector female head is connected with a tail hoop of the advanced small guide pipe; the small conduit joint is internally provided with a one-way valve, so that the slurry always flows from the hose into the small conduit. The tool is convenient to disassemble and assemble and simple to operate, shortens the operation time for installing the hose and the advanced small guide pipe, and reduces the labor intensity of operators; the problem of slurry leakage after the leading small guide pipe and the hose end are disconnected is fully avoided, and the safety performance of underground space support is further improved.

Description

Auxiliary tool for grouting of underground space advanced small guide pipe

Technical Field

The utility model relates to the technical field of underground space support, in particular to an auxiliary tool for grouting a small advance duct in an underground space.

Background

The advanced small conduit grouting process is to tie up the tail of the small conduit with iron wires after connecting the hose, and simultaneously to seal and densify the peripheral pores of the conduit with plastic cement; selecting a grouting pump with working pressure meeting grouting requirements, and controlling grouting quantity well, namely ending when the specified grouting quantity is reached in each guide pipe; if the orifice pressure has reached the prescribed pressure value, but the injection amount is still insufficient, the grouting should be stopped. After grouting is finished, checking grouting effect, and if the grouting effect does not meet the requirement, performing hole filling grouting.

The existing connection mode of the advance small guide pipe and the hose is complex in operation, the bundling quality artificial factor is greatly influenced, quality control is not facilitated, when the hose is disassembled after grouting is completed, slurry filled in the advance small guide pipe leaks to cause leakage, the grouting quantity cannot reach a preset standard, the stability of a face is poor, potential safety hazards exist in an underground space, therefore, an accelerator is required to be added into the slurry, or a stopping-filling and waiting-solidifying method is adopted for treatment, and the construction cost is increased.

Disclosure of Invention

Aiming at the problems that the binding connection mode of the advance small guide pipe and the hose iron wire in the prior art is complex in operation and slurry leakage exists when the hose is disassembled, the utility model provides an auxiliary tool for grouting the advance small guide pipe in the underground space.

The utility model relates to an auxiliary tool for grouting a small underground space advanced guide pipe, which is characterized by comprising a hose end and a small guide pipe end, wherein the front end of the hose end is provided with a pagoda joint, and the rear end of the hose end is provided with a first quick joint female joint; the front end of the small guide pipe is provided with a first quick connector male head, the rear end of the small guide pipe is provided with a second quick connector female head, and the second quick connector female head is connected with a tail hoop of the advanced small guide pipe; the small conduit joint is internally provided with a one-way valve, so that the slurry always flows from the hose into the small conduit.

Further, the quick connector comprises a spanner type quick connector and a self-locking type quick connector, and the quick connection or disconnection of the pipeline is realized through the cooperation of the male head of the quick connector and the female head of the quick connector.

Furthermore, the tower joint adopts a variable diameter type tower joint, so that the tower joint can adapt to hoses with various specifications.

Further, the small catheter end is provided with an inspection cleaning port, the inspection cleaning port is positioned behind the one-way valve, the inspection cleaning port is plugged by a baffle, and the inspection cleaning port is used for: and in the grouting stage, checking grouting pressure conditions in the small conduit end, exhausting in the initial setting stage, disassembling the small conduit end after the initial setting is finished, and introducing high-pressure gas to purge the inner cavity of the small conduit end.

Furthermore, the inner cavity of the small catheter end is covered with the PE lining, the PE lining is relatively smooth, and if necessary, a release agent can be smeared in the PE inner cavity, so that slurry residues in the initial setting stage are reduced as much as possible in the small catheter joint.

The auxiliary tool for grouting the underground space advanced small guide pipe is convenient to assemble and disassemble and simple to operate, shortens the operation time for installing the hose and the advanced small guide pipe, and reduces the labor intensity of operators; the problem of slurry leakage after the leading small guide pipe and the hose end are disconnected is fully avoided, and the safety performance of underground space support is further improved; the tool is convenient to clean, can be reused, and is worth popularizing.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a top view of the present utility model.

Fig. 4 is a schematic structural view of a grouting auxiliary tool using a self-locking quick connector.

The cleaning device comprises a hose end 1, a small guide pipe end 2, a pagoda joint 1-1, a first quick joint female head 1-2, a first quick joint male head 2-1, a second quick joint female head 2-2, a one-way valve 2-3 and a cleaning port 2-4.

Detailed Description

Example 1: the tool consists of a hose end 1 and a small conduit end 2, wherein the hose end 1 and the small conduit end 2 are both in cast iron structures; one end of the hose end 1 adopts a pagoda joint 1-1, the pagoda joint 1-1 adopts a reducing pagoda joint 1-1, so that the hose end can adapt to various specifications of hoses with diameters of 25mm, 32mm or 48mm and the like, and the other end is provided with a first quick joint female joint 1-2; one end of the small guide pipe end 2 adopts a first quick connector male head 2-1, the other end adopts a second quick connector female head 2-2, and the second quick connector female head 2-2 is connected with a tail hoop of the advanced small guide pipe; the small conduit joint is internally provided with a one-way valve 2-3, so that the slurry always flows from the hose into the small conduit. The small catheter end 2 is provided with an inspection cleaning opening 2-4, and the inspection cleaning opening 2-4 is blocked by a baffle; the inner cavity of the small catheter end 2 is covered with a PE lining, the PE lining is relatively smooth, and if necessary, a release agent can be smeared in the PE inner cavity, so that slurry residues in the initial setting stage are reduced as much as possible in the small catheter joint.

When the grouting device is used, the pagoda joint 1-1 of the hose end 1 is inserted into a hose, the hose end 1 is abutted with the small catheter end 2 of a first leading small catheter and fastened by a spanner, the small catheter end 2 is abutted with the leading small catheter and fastened by the spanner, the inspection cleaning port 2-4 is closed, the grouting pump starts to work, the grouting pressure at the joint is maintained to be 0.5-1.0mPa, when the specified injection amount is reached, the grouting is ended, the connection between the hose end 1 and the small catheter end 2 is disconnected, the hose end 1 is abutted with the small catheter end 2 of a second leading small catheter, and the grouting operation is continuously carried out; at this time, the small conduit end 2 of the first leading small conduit is not disassembled, and the slurry injected into the first leading small conduit cannot leak from the tail of the small conduit due to the action of the one-way valve 2-3. After the slurry is initially set for 1-2 hours, the fluidity of the slurry in the advance small conduit is reduced, the small conduit end 2 of the first advance small conduit is detached, and the small conduit end 2 is slightly knocked and vibrated and is flushed by high-pressure gas, so that the slurry can be put into the subsequent advance small conduit construction of engineering again.

Claims

1. The auxiliary tool for grouting the underground space advanced small guide pipe is characterized by comprising a hose end (1) and a small guide pipe end (2), wherein a pagoda joint (1-1) is arranged at the front end of the hose end (1), and a first quick connector female joint (1-2) is arranged at the rear end of the hose end; the front end of the small catheter end (2) is provided with a first quick connector male head (2-1), the rear end is provided with a second quick connector female head (2-2), and the second quick connector female head (2-2) is connected with a tail hoop of the advanced small catheter; a one-way valve (2-3) is arranged in the small conduit joint, so that the slurry always flows from the hose into the small conduit.

2. The auxiliary tool for grouting of the underground space advanced small guide pipe as claimed in claim 1, wherein the quick connector comprises a spanner type quick connector and a self-locking quick connector.

3. The auxiliary tool for grouting the underground space advanced small guide pipe as claimed in claim 1, wherein the pagoda joint (1-1) is a reducing pagoda joint (1-1).

4. The auxiliary tool for grouting the underground space advanced small guide pipe according to claim 1, wherein an inspection cleaning port (2-4) is arranged at the small guide pipe end (2), the inspection cleaning port (2-4) is positioned behind a one-way valve, and the inspection cleaning port (2-4) is plugged by a baffle.

5. The auxiliary tool for grouting the underground space advanced small guide pipe as claimed in claim 1, wherein the inner cavity of the small guide pipe end (2) is covered with a PE lining.