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Slip casting capsule hole packer

A technology of hole sealer and grouting bag, which is used in sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve the problems of affecting the sealing effect, poor adaptability, complicated operation, etc., and achieve the sealing effect. Good, strong applicability, simple operation effect

Inactive Publication Date: 2015-11-04
河南中煤矿业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Cement mortar plugging: Cement mortar plugging is applied in medium-hard and hard coal seams, the sealing speed is fast, the hole sealing is reliable, and the effect is very good, but the plugging effect on soft coal seams is poor
[0005] 2. The gas drainage occluder is used. The gas drainage occluder is expensive, the operation is complicated, and the sealing effect is unstable. Threat to coal mine safety production
[0006] 3. Using rigid polyurethane foam to seal the hole, the disadvantage is that the operation is complicated, and the polyurethane foam shrinks over time, which seriously affects the sealing effect
[0007] 4. The water (air) pressure type hole sealing device is used, and its disadvantage is that it is heavy and inconvenient to operate.
[0008] 5. Conical capsule type hole sealer, its disadvantage is that it has poor adaptability to the size of the hole diameter and the shape of the hole, and the quality of the hole sealing is not easy to guarantee

Method used

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  • Slip casting capsule hole packer
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment is used for the sealing of boreholes with a gas drainage pipe 1 .

[0026] Such as figure 1 , figure 2 As shown, a grouting bag type hole sealer includes a grouting pipe 2, and is also provided with two expansion bags 3, and a space is arranged between the two expansion bags 3, and the grouting pipe 2 runs through Through the two expansion bags 3, it is ensured that the end of the grouting pipe 2 extends into the last expansion bag 3 without passing out, and a one-way check valve 4 is arranged on the grouting pipe 2 inside the expansion bag 3, A burst valve 5 is arranged on the grouting pipe 2 between the two expansion bags 3 . A tie ring 6 can be arranged on the expansion bag 3 for binding the expansion bag 3 tightly to the grouting pipe 2 to avoid grout leakage during grouting.

[0027] The expansion bag 3 is double-layered (the double layer can effectively play the soft role of the expansion bag 3, thereby improving the sealing effect), the inner ...

Embodiment 2

[0030] This embodiment is used to seal boreholes with bolts.

[0031] A grouting bag type hole sealer, including a grouting pipe 2, and two expansion bags 3, with a space between the two expansion bags 3, the grouting pipe 2 runs through two The expansion bag 3 ensures that the end of the grouting pipe 2 extends into the last expansion bag 3 without passing out. A one-way check valve 4 is arranged on the grouting pipe 2 in the expansion bag 3. A burst valve 5 is arranged on the grouting pipe 2 between the expansion bags 3 . A tie ring 6 can be arranged on the expansion bag 3 for binding the expansion bag 3 tightly to the grouting pipe 2 to avoid grout leakage during grouting. see figure 1 , figure 2 .

[0032] The expansion bag 3 is double-layered, the inner layer bag 3-1 is set on the grouting pipe 2, and the outer layer bag 3-2 is set on the anchor rod or some other rod.

[0033] Using method and principle are the same as embodiment 1.

Embodiment 3

[0035] This embodiment is used for borehole sealing in other cases without any rod.

[0036] A grouting bag type hole sealer, including a grouting pipe 2, and two expansion bags 3, with a space between the two expansion bags 3, the grouting pipe 2 runs through two The expansion bag 3 ensures that the end of the grouting pipe 2 extends into the last expansion bag 3 without passing out. A one-way check valve 4 is arranged on the grouting pipe 2 in the expansion bag 3. A burst valve 5 is arranged on the grouting pipe 2 between the expansion bags 3 . A tie ring 6 can be arranged on the expansion bag 3 for binding the expansion bag 3 tightly to the grouting pipe 2 to avoid grout leakage during grouting.

[0037] The expansion bag 3 is a single layer, which is sleeved on the grouting pipe 2 .

[0038] When in use, the grouting pipe 2 is first placed in the front and rear expansion bags 3, and tightened by the tie ring 6; it extends into the borehole 7 in the coal body 9. Afterwar...

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Abstract

A slip casting capsule hole packer relates to a drilling hole packing device and comprises a casting pipe (2). The slip casting capsule hole packer is characterized in that the tail end of the casting pipe (2) is sealed; the casing pipe (2) is at least provided with two expansion bag capsules arranged front and back; the casting pipe (2) is connected with the expansion bag capsule (3) via a single-way inverted valve (4); and an explosion valve (5) is arranged on the casting pipe (2) between the expansion bag capsules (3). The beneficial effects are that the slip casting capsule hole packer is advantaged by simple operation, great hole packing effect, safety, reliability, strong adaptability and high efficiency.

Description

technical field [0001] The present invention relates to mining machinery, and further relates to a drilling and sealing device, in particular to a grouting capsule type hole sealing device. Background technique [0002] Coal and gas outburst is a natural disaster that threatens the safe production of coal mines. Especially in recent years, with the increase of mine mining depth, the gas pressure and gas content of coal seams have gradually increased. The new technology of drilling pre-extraction of gas has brought about the problem of plugging and sealing between the drainage hole and the drainage pipeline. [0003] Currently, there are several ways to solve this problem: [0004] 1. Cement mortar plugging: Cement mortar plugging is used in medium-hard and hard coal seams. The sealing speed is fast, the hole sealing is reliable, and the effect is good, but the plugging effect on soft coal seams is poor. [0005] 2. The gas drainage occluder is used. The gas drainage occlud...

Claims

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Application Information

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IPC IPC(8): E21B33/126
Inventor 赵永旗赵志林
Owner 河南中煤矿业科技发展有限公司