Major cycle slanting extraction method for coal mining work surface

A technology for coal mining face and working face, applied in ground mining, mining equipment, earthwork drilling and other directions, can solve the problems of slow speed, low efficiency, cluttered process, etc. The effect of mining time

Active Publication Date: 2009-05-13
SHANXI COKING COAL GROUP
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Problems solved by technology

[0003] In order to solve the problems of messy procedures, slow speed and low efficiency when adjusting the inclination of

Method used

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  • Major cycle slanting extraction method for coal mining work surface
  • Major cycle slanting extraction method for coal mining work surface
  • Major cycle slanting extraction method for coal mining work surface

Examples

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Example Embodiment

[0021] The following is an example to illustrate the inclined mining method of the present invention with a working face length of 150m and a section of 30m divided into five sections from the nose to the tail. The maximum cutting depth of the shearer is 0.6m.

[0022] (1) As shown in Fig. 1, when the inclined mining starts, the shearer 5 is normally inclined to feed the knife at the nose, and the coal is normally cut in the direction of the tail. After the first knife is completed, the shearer 5 starts to move normally. In the 1st stage, the inclined top slide 6 is carried out, and the moving step of the slide gradually decreases from 0.6m to zero from the nose to the tail. During this process, the hydraulic support 6 is cyclically moved and put on the top according to the conventional method, and the first step is completed. Small inclined mining cycle; (2) As shown in Figure 2, after the shearer feeds in the second section, the shearer normally cuts coal in the second to fif...

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Abstract

The invention relates to the field of coal mining, in particular to a method for large circle slope mining of a mining coal face. The method solves the problems existing in the slope adjustment of the prior mining coal face such as process disorder, low speed and low efficiency. The method comprises the following steps: slope adjustment proportion is determined; the working face is divided into sections; a coal mining machine feeds tools alternatively in a machine head and a mining section, the mining section is used as a slope adjustment section at the same time, the displacement space of a scraper-trough conveyer varies between the maximum cutting depth of the mining machine and zero to complete a small slope mining circle of each section, the scraper-trough conveyer is straightened when the last small slope mining circle is completed, and the working face is mined into a step shape; and at last the mining machine adopts an inclined cutting feed mode for cutting triangular coal for the machine head to complete cutting of triangular coal, and thus a large circle slope mining process is completed. The method improves the efficiency and speed of slope mining and production management level during slope mining, ensures safety effectiveness, reduces times for moving the working face, reduces the labor intensity of workers and is widely applicable.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a large-cycle oblique mining method for a coal mining face. Background technique [0002] It is well known that mine mining and production layout, under normal circumstances, the coal mining face is arranged in the way of vertical arrangement of two troughs and the mining area (or horizontal) centralized material transportation and transportation roadway, which is conducive to the rational connection of various production systems, but for the production site In other words, due to the complex underground geological structure, faults and carbon-free pillars are relatively developed, it often occurs that the two troughs in the coal mining face are arranged obliquely with the centralized material transportation and transportation lanes in the mining area, or the two troughs are partially not parallel to each other. As a result, the working face needs to be tilted to avoid the influence of...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21C25/06E21D23/00
Inventor 梁椿豪李玫斯
Owner SHANXI COKING COAL GROUP
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