Gas extracting drilling solid-liquid two-phase hole sealing device and technology

Abstract

The invention discloses a gas extracting drilling solid-liquid two-phase hole sealing device. The gas extracting drilling solid-liquid two-phase hole sealing device comprises a first capsule bag, a second capsule bag, a third capsule bag, a primary grouting pipe and a secondary grouting pipe, a first hole sealing section is arranged between the first capsule bag and the second capsule bag, and a second hole sealing section is arranged between the second capsule bag and the third capsule bag; and an explosive valve located in the first hole sealing section is formed in the primary grouting pipe, the other end of the secondary grouting pipe is located in the second hole sealing section, and is in communication with the second hole sealing section through a second one-way valve. The inventiondiscloses a gas extracting drilling solid-liquid two-phase hole sealing technology at the same time, a network is connected to perform extracting after the first hole sealing section is subjected tosolid-phase hole sealing, periodic detection of gas extracting concentration is carried out to an extracting drilling hole of which the solid-phase extracting is completed, liquid-phase sealing of thesecond hole sealing section is perform on an extracting drilling hole with gas leakage, and then extracting can be continued. According to the gas extracting drilling solid-liquid two-phase hole sealing device and technology, liquid-phase hole sealing operation can be carried out to an extracting drilling hole with poor hole sealing and the gas leakage, periodic maintenance can be carried out tothe liquid sealing effect, and extracting drilling hole is prevented from densified cumbersome construction.

Description

technical field

[0001] The invention belongs to the technical field of gas drainage in coal mines, and relates to a solid-liquid two-phase hole sealing device and process for gas drainage drilling. Background technique

[0002] Gas drainage is an important measure to solve and prevent coal mine gas disasters. In the process of gas drainage, sealing technology will greatly affect the efficiency of gas drainage. If the sealing quality of the gas drainage drilling is poor, it will reduce the gas flow pressure difference in the coal seam, which is not conducive to rapid gas drainage, will increase the gas drainage time, and will reduce the utilization efficiency of the drainage equipment. Increase a lot of fearless energy consumption of coal mining enterprises. Therefore, improving the sealing quality of gas drainage boreholes is the basic guarantee to ensure the safety and efficiency of underground gas drainage, and it is of great significance for mine gas control and utilizat...

Examples

Embodiment Construction

[0034] Such as figure 1 As shown, a gas drainage drilling solid-liquid two-phase hole sealing device of the present invention includes No. 1 bag 1, No. 2 bag 2, No. 3 bag 3, primary grouting pipe 4 and secondary grouting pipe 5. The structures of the No. 1 bag 1 and the No. 2 bag 2 are the same, and the No. 1 bag 1 and the No. 2 bag 2 are provided with the primary grouting pipe 4, the secondary grouting pipe 5 and the gas extraction sleeve respectively. The hole through which the pipe 10 passes; the third bag 3 is provided with a hole for the primary grouting pipe 4 and the gas drainage casing 10 to pass through; the first bag 1, the second bag 2 and the third bag The two ends of 3 are fixedly installed on the primary grouting pipe 4 through the snap ring 6 respectively. When fixing the No. 1 pouch 1, the No. 2 pouch 2 and the No. 3 pouch 3, you are not limited to using the snap ring 6, and you can also use steel wire, hemp rope or strong adhesive tape.

[0035] The primary ...

technical field

[0001] The invention belongs to the technical field of gas drainage in coal mines, and relates to a solid-liquid two-phase hole sealing device and process for gas drainage drilling. Background technique

[0002] Gas drainage is an important measure to solve and prevent coal mine gas disasters. In the process of gas drainage, sealing technology will greatly affect the efficiency of gas drainage. If the sealing quality of the gas drainage drilling is poor, it will reduce the gas flow pressure difference in the coal seam, which is not conducive to rapid gas drainage, will increase the gas drainage time, and will reduce the utilization efficiency of the drainage equipment. Increase a lot of fearless energy consumption of coal mining enterprises. Therefore, improving the sealing quality of gas drainage boreholes is the basic guarantee to ensure the safety and efficiency of underground gas drainage, and it is of great significance for mine gas control and utilizat...

Examples

Embodiment Construction

[0034] Such as figure 1 As shown, a gas drainage drilling solid-liquid two-phase hole sealing device of the present invention includes No. 1 bag 1, No. 2 bag 2, No. 3 bag 3, primary grouting pipe 4 and secondary grouting pipe 5. The structures of the No. 1 bag 1 and the No. 2 bag 2 are the same, and the No. 1 bag 1 and the No. 2 bag 2 are provided with the primary grouting pipe 4, the secondary grouting pipe 5 and the gas extraction sleeve respectively. The hole through which the pipe 10 passes; the third bag 3 is provided with a hole for the primary grouting pipe 4 and the gas drainage casing 10 to pass through; the first bag 1, the second bag 2 and the third bag The two ends of 3 are fixedly installed on the primary grouting pipe 4 through the snap ring 6 respectively. When fixing the No. 1 pouch 1, the No. 2 pouch 2 and the No. 3 pouch 3, you are not limited to using the snap ring 6, and you can also use steel wire, hemp rope or strong adhesive tape.

[0035] The primary ...

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