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Shortwall hydraulic mining method along strike

A coal mining method and hydraulic technology, which are applied to underground coal mining in coal mines and move towards the field of short-wall hydraulic coal mining, can solve the problems of imperfect ventilation system, poor operation safety, and narrow application range, and achieve strong production continuity and production safety. Reliable, adaptable results

Active Publication Date: 2015-05-20
沈阳天安特种机器人有限公司
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AI Technical Summary

Problems solved by technology

This coal mining method solves the difficulties of ventilation in the working face of the existing traditional hydraulic coal mining method, serious gas hazards, imperfect ventilation system, poor operation safety, and cannot be used in coal seams with high gas and serious tendency of spontaneous combustion. The scope of application is narrow. Problems such as low recovery rate

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  • Shortwall hydraulic mining method along strike

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like figure 1 Shown, a kind of short-wall hydraulic coal mining method comprises the following steps:

[0021] Step 1: In the area where the inclined coal seam is to be mined, along the direction of the coal seam strike, the phase of the hydraulic coal mining face is arranged at a pseudo-incline at an angle of about 10-20° to the coal seam inclination, and the return air channel 2 and the recovery channel are formed to form a small trend stage Coal mining method, each coal seam is jointly arranged for mining, single-wing or double-wing mining of the coal seam, downward mining within the stage, the mining of the first small-stage working face 1 is completed, and then the second small-stage working face 10 is mined; the size of the working face is determined according to the coal seam assigned In general, the inclination length ...

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Abstract

The invention provides a shortwall hydraulic mining method along strike and belongs to the technical field of coal mining. The mining method is used for solving the problems of difficult face ventilation, serious gas harm, imperfect ventilation system, poor operation safety, unavailability for coal seams with high gas and serious spontaneous combustion tendency, relatively narrow application range, low recovery ratio and the like of the traditional hydraulic mining methods. According to the shortwall hydraulic mining method along strike, stope ventilation is focused and the arrangement of a hydraulic mining tunnel and the support pattern of the working face are improved, and therefore, a mining method conforming to ventilation and gas control requirements is established. The shortwall hydraulic mining method along strike is reasonable in process design, safe and reliable, and capable of well meeting the requirements of the underground hydraulic mining operations; as a result, the effective support for an exposed roof on the hydraulic mining face and the reasonable ventilation of the working face are realized, and the coal mining efficiency and the operational safety are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and relates to an underground coal mining method in a coal mine, in particular to a trending short-wall hydraulic coal mining method for an inclined difficult-to-mining coal seam, which provides an effective guarantee for ventilation safety of a hydraulic coal mining face. Background technique [0002] Existing coal mining methods include mechanical coal mining, hydraulic coal mining, and blasting coal mining. When the mechanical coal mining method cannot be used under some conditions with large dip angles or unstable coal seams, the blasting coal mining method and hydraulic coal mining method are often used. The hydraulic coal mining method is a mechanized coal mining technology that uses high-pressure water jets to break the coal body, and completes its transportation, lifting and other processes with the help of hydraulic power. [0003] The characteristics of hydraulic coal mining: coal ...

Claims

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Application Information

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IPC IPC(8): E21C45/00
CPCE21C45/00
Inventor 曹树祥曹伟冯国才滕飞邱洋杨宏光王荣亮
Owner 沈阳天安特种机器人有限公司
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