Coal layer loosening technology for underground gasified furnace

A technology of underground gasification and coal seam, which is applied in coal gasification, underground mining, construction, etc., and can solve the problems of poor air permeability of gasified coal seam

Inactive Publication Date: 2003-05-21
XINWEN MINING GROUP
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  • Abstract
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Problems solved by technology

[0003] In order to overcome the deficiency of poor air permeability of gasified coal seams in existing solid gasifiers, the present invention provides a coal seam loosening process for underground gasifiers, which can solve the problem of p

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  • Coal layer loosening technology for underground gasified furnace
  • Coal layer loosening technology for underground gasified furnace
  • Coal layer loosening technology for underground gasified furnace

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like figure 1 As shown, the underground gasification furnace coal seam loosening process of the present invention is inside the underground gasification furnace body, from the gasification passage (1) according to a certain distance, to dig a number of roadways parallel or nearly parallel to the air flow passage (2) - Loosening the loosening channel (4), and drilling the two sides of the loosening guiding channel (4) to loosen the moving gun, so as to produce artificially loosened coal (5) and mine pressure loosened coal (5'). Artificially loosened coal (5) is loose coal formed by loosening the dynamic gun, and mine pressure loosened coal (5') is loose coal formed by changes in mine pressure due to the influence of excavating the loosening channel (4) and loosening the dynamic gun. We call the gasifier with the pine guide channel (4) ...

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Abstract

The present invention relates to an underground gasification furnace coalbed loosening process, belonging to the field of coal underground gasification technology. It is characterized by that in the interior of the furnace body of underground gasification furnace several loose-guiding channels which are parallel or approximately parallel to gas tream channel are excavated according to a certain spaced distance in the gasification channel, and the back-off shooting can be made on the both sides of loose-guiding channel so as to form artificial loose coal, and then form mine ground pressure loose coal by utilizing mine ground pressure change so as to raise gasification reaction area to raise yield of underground gasification furnace and its stability.

Description

Technical field [0001] The invention relates to an underground coal gasification process, in particular to an underground gasification furnace coal seam loosening process for loosening the coal body in the underground gasification furnace, increasing the air permeability of the coal seam and increasing the gasification reaction area. Background technique [0002] The previous underground gasifier has no guide channel in the gasifier body, so we call it a solid gasifier. The coal wall in the gasification channel is evenly stressed, and the loose coal is less. Loose coal includes the coal body that has increased fissures and loosened due to the influence of mining or blasting, but has not separated from the coal wall, and the scattered coal that has separated from the coal wall and scattered on the coal seam floor. Sometimes even if coal is piled up in the gasification channel or the gun is loosened, it is temporary. Therefore, the air permeability of the gasified coal seam ...

Claims

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Application Information

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IPC IPC(8): E21B43/295
Inventor 刘宝银郑珂邱波
Owner XINWEN MINING GROUP
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