CN205532465U - Slip casting hole packer is pressed in split type bag area - Google Patents

Abstract

The utility model relates to a split-type bag sealing device with pressure grouting, which comprises a front bag, a rear bag and a bag grouting pipe. The pouch, the part of the pouch grouting pipe located in the front pouch and the rear pouch are respectively provided with a slurry outlet, the grout outlet in the front pouch is provided with a blasting valve one, and the slurry outlet in the back pouch is provided with a Blasting valve 2, a closed space is formed between the front bladder and the rear bladder after grouting; a coal seam grouting pipe is arranged parallel to the bladder grouting pipe; the coal seam grouting pipe runs through the front bladder and its end is connected In the confined space; the part of the coal seam grouting pipe located in the front bladder is provided with a continuous grouting hole, and the end of the coal seam grouting pipe is provided with a blasting valve three; the continuous grouting hole on the coal seam grouting pipe can effectively prevent coal wall The problem of poor sealing of the front pouch caused by the expansion of the upper drilling hole.

Description

Split-type bladder bag with pressure grouting sealer

technical field

The utility model belongs to a gas drainage drilling and sealing device used in coal mines, and relates to a split-type bag sealing device for grouting with pressure.

Background technique

At present, the gas drainage drilling and sealing device used in coal mines is to seal and fix a grouting sealing bag with a fastening ring at the front end and rear end of the circumferential wall of a grouting pipe respectively, and install it in parallel below the grouting pipe. A coal seam grouting pipe, the grouting pipe and the coal seam grouting pipe are sealed through the front sealing bag at the same time, the rear end of the grouting pipe is inserted into the rear sealing bag, and the grouting in the front and rear sealing bags is provided with a grout outlet , There is a blasting valve at the slurry outlet. During the use of this kind of hole sealer, after the front and rear sealing bags are filled with slurry, the blasting valve bursts, the grouting pipe is finished, and then the coal seam grouting pipe starts grouting. Now With the technology of the hole sealer, after the coal seam grouting pipe starts grouting, the pressure on the coal wall increases, and the front sealing bag is easy to form a gap with the coal wall, which leads to the decline of the sealing quality of the front sealing bag and affects the work efficiency.

Utility model content

In order to overcome the defective that prior art exists, the technical scheme that the utility model provides is as follows:

A split-type bladder pressure grouting hole sealer, comprising a front bladder, a rear bladder, and a bladder grouting tube, the bladder grouting tube passes through the front bladder and its end is connected to the rear bladder, the bladder The part of the bag grouting pipe located in the front bladder and the rear bladder is respectively provided with a grout outlet, the grout outlet in the front bladder is provided with a blasting valve 1, and the grout outlet in the rear bladder is provided with a blasting valve 2, A closed space is formed between the front bag and the back bag after grouting; a coal seam grouting pipe is arranged parallel to the bag grouting pipe; Space; the part of the coal seam grouting pipe located in the front bladder is provided with a continuous grouting hole, and the end of the coal seam grouting pipe is provided with a blasting valve three.

The front pouch and the back pouch are canvas pouches.

The bladder grouting pipe is provided with a quick connector.

The connecting parts of the front bag and the rear bag, the bag grouting pipe and the coal seam grouting pipe are fastened and sealed by a fastening ring.

Beneficial effects: the grouting hole and the grouting port of the bladder grouting pipe are equipped with blasting valves, the grouting of the bladder is started, and when the pressure between the outer end bladder and the inner end bladder and the coal wall reaches a certain level, the blasting valve work, the bag grouting pipe stops grouting, the coal seam grouting pipe starts grouting, the coal wall is squeezed and expands around, the pressure between the outer bag and the coal wall becomes smaller, resulting in a decrease in the plugging effect. At this time, The grouting hole on the coal seam grouting pipe starts grouting until the outer bag and the coal wall are completely closed. In addition, a blast valve is installed at the end of the coal seam grouting pipe. When the grouting material is filled to a certain extent, the pressure on the coal wall When it reaches a certain value, the blasting valve at the end of the coal seam grouting pipe works, and the coal seam grouting pipe stops grouting.

Description of drawings

Fig. 1 is a structural representation of the utility model;

In the figure, 1 front bladder, 2 rear bladder, 3 bladder grouting pipe, 4 grout outlet, 5 blasting valve 1, 6 quick connector, 7 blasting valve 2, 8 coal seam grouting pipe, 9 continuous grouting hole , 10 blasting valve three, 11 fastening ring.

detailed description

As shown in Figure 1, a split-type bag sealing device with pressure grouting includes a front bag 1, a back bag 2 and a bag grouting pipe 3, and the front bag 1 and the back bag 2 are canvas bags bag, the pouch grouting pipe 3 runs through the front pouch 1 and its end is connected to the rear pouch 2, and the parts of the pouch grouting pipe 3 located in the front pouch 1 and the rear pouch 2 are respectively provided with grout outlets 4, The grout outlet 4 on the bladder grouting pipe 3 in the front bladder 1 is provided with a blasting valve-5, the end of the bladder grouting tube 3 is provided with a quick connector 6, and the bladder grouting tube 3 in the rear bladder 2 The slurry outlet 4 on the top is provided with a blasting valve 2 7, and a closed space is formed between the front bag 1 and the back bag 2 after grouting, and a coal seam grouting pipe 8 is arranged in parallel on one side of the bag grouting pipe 3, and the coal seam After the grouting pipe 8 passes through the front bladder 1, its end is connected to the confined space. The part of the coal seam grouting pipe 8 located in the front bladder 2 is provided with a continuous grouting hole 9, and the end of the coal seam grouting pipe 8 is provided with a blasting hole. Valve three 10, the connection part between the front bag 1 and the back bag 2 and the bag grouting pipe 3 and the coal seam grouting pipe 8 is fastened and sealed by the fastening ring 11.

Implementation method: put the device into the borehole on the coal seam, the rear bladder is located at the inner end of the borehole, the front bladder is located at the outer end of the borehole, and then the bladder grouting pipe starts grouting, the current bladder and the rear bladder are When the pressure of the coal seam reaches a certain level, the front bladder and the rear bladder will seal the hole, the blast valve on the quick connector and the blast valve on the bladder grouting pipe in the front bladder will work, and the bladder grouting pipe will stop injecting. A closed space is formed between the front pocket and the back pocket. At this time, the coal seam grouting pipe starts to work and begins to grout the closed space. When the slurry in the closed space reaches a certain level on the coal seam, the borehole expands outward. , causing the pressure between the front bladder and the coal seam to decrease, and the sealing effect to deteriorate. At this time, the grouting hole on the coal seam grouting pipe begins to grout the front bladder. When the pressure of the bag on the coal seam reaches a certain value, the blasting valve at the end of the coal seam grouting pipe will work, and the coal seam grouting pipe will stop working.

Claims (4)

1. A split-type capsule bag with pressure grouting sealing device, comprising a front capsule bag, a rear capsule bag and a capsule bag grouting pipe, the end of which is connected to the rear capsule bag after the capsule bag grouting pipe passes through the front capsule bag , the parts of the bladder grouting pipe located in the front bladder and the rear bladder are respectively provided with a grout outlet, the grout outlet in the front bladder is provided with a blasting valve 1, and the grout outlet in the rear bladder is provided with a blasting valve 2. A closed space is formed between the front bladder and the rear bladder after grouting; it is characterized in that: a coal seam grouting pipe is arranged parallel to the bladder grouting pipe; the coal seam grouting pipe runs through the rear of the front bladder The end is connected to the confined space; the part of the coal seam grouting pipe located in the front bladder is provided with a continuous grouting hole, and the end of the coal seam grouting pipe is provided with a blasting valve three. 2. The split-type pouch sealing device with pressure grouting according to claim 1, characterized in that: the front pouch and the rear pouch are canvas pouches. 3. The split-type pocket bag pressure grouting hole sealing device according to claim 1, characterized in that: the pocket bag grouting pipe is provided with a quick connector. 4. The split bladder pressure grouting hole sealing device according to claim 1, characterized in that: the connecting parts of the front bladder and the rear bladder, the bladder grouting pipe and the coal seam grouting pipe are connected by tight Retaining ring tight seal.