Hole sealing device for coal seam water infusion long hole

A technology for hole sealing device and coal seam water injection, which is applied to safety devices, mining equipment, earthwork drilling, etc., can solve the problem of high investment and operation cost, and achieve the effect of low investment and operation cost and good hole sealing effect.

Inactive Publication Date: 2012-07-11
TIANCHEN COAL MINE OF ZAOZHUANG MINING GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the sealing measures mainly adopt two methods: manual cement...

Method used

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  • Hole sealing device for coal seam water infusion long hole
  • Hole sealing device for coal seam water infusion long hole

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0014] A long hole sealing device for coal seam water injection, such as figure 1 As shown, the sealing device 4 is included. The sealing device 4 has an outer limiting plate 5 and an inner positioning plate 2 hermetically connected. The outer limiting plate 5 corresponds to the inner positioning plate 2, and the outer limiting plate 5 is close to the sealing device. At the beginning of 4, the inner positioning plate 2 is close to the end of the hole sealer 4. The outer limit plate 5 is also sealed with a grouting pipe 6 and an outlet pipe 8, the beginning of the grouting pipe 6 and the beginning of the outlet pipe 8. They are all located outside the outer limiting plate 5, and the end of the grouting pipe 6 and the end of the air outlet pipe 8 are both located between the outer limiting plate 5 and the inner positioning plate 2. The initial end of the pluggi...

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Abstract

The invention provides a hole sealing device for a coal seam water infusion long hole, which is low in investing and operating cost and comprises a hole packer, an outer limiting board and an inner positioning board which correspond to each other are connected on the hole packer in a closed way, wherein the outer limiting board is close to the head end of the hole packer, and the inner positioning board is close to the tail end of the hole packer, a grouting pipe and an air outlet pipe are connected on the outer limiting board in a closed way, the head end of the grouting pipe and the head end of the air outlet pipe are positioned at the outer side of the outer limiting board, and the tail end of the grouting pipe and the tail end of the air outlet pipe are positioned between the outer limiting board and the inner positioning board; the head end of the hole packer, the head end of the grouting pipe and the head end of the air outlet pipe are respectively connected with a valve in a closed way. The hole sealing device is used for the hole sealing of the coal seam water infusion, by means of the outer limiting board and the inner positioning board, the cavity between the outer limiting board and the inner positioning board is filled to be a mud filling area through the grouting pipe, so that the hole sealing effect is good, and the investing and operating cost is low.

Description

Technical field [0001] The invention relates to a mining device, in particular to a coal seam water injection long hole sealing device. Background technique [0002] At present, the common coal seam water-injection and hole-sealing process in all coal mines is as follows: water is injected into the borehole and penetrated into the coal body through a water injection pipe sealed in the borehole. Hole sealing means to seal the water injection pipe in the borehole. Sealing is a key issue for water injection. To ensure that pressurized water does not leak from the orifice and the coal wall near it, the orifice must be tightly closed and firm under a certain sealing depth. It is generally believed that the plugging depth of water injection boreholes mainly depends on the water injection pressure, the degree of fracture development of the coal seam, the width of the fracture zone of the coal along the edge of the roadway, the performance of the coal seam and the drilling direction. G...

Claims

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Application Information

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IPC IPC(8): E21F5/02
Inventor 李在阁袁翼统郝明辉陈国庆杨后勤姜永喜葛惠民李伟于北春吕建峰刘振
Owner TIANCHEN COAL MINE OF ZAOZHUANG MINING GRP
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