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Working face integrated support and mining method for steep seam

A mining method and technology of working face, which are applied in ground mining, mine roof support, mining equipment and other directions, can solve the problems of low degree of mechanization, poor stability of support, low mining efficiency, etc., and achieve simplified process flow, increased operating rate, mining Efficiency-enhancing effect

Active Publication Date: 2015-11-04
CHINA UNIV OF MINING & TECH
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Problems solved by technology

Existing mining methods for steeply inclined coal seams mainly include inverted bench mining method, horizontal layered coal mining method, and flexible shield support mining method, etc., with low degree of mechanization, high labor intensity and low mining efficiency, while the comprehensive mechanized mining method uses At the same time, because the inclination angle of the steeply inclined coal seam is greater than 45°, the support system of the working face cannot effectively close the working space, the stability of the support is poor, the safety reliability of the working face is low, and the output is low

Method used

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  • Working face integrated support and mining method for steep seam
  • Working face integrated support and mining method for steep seam
  • Working face integrated support and mining method for steep seam

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Embodiment

[0048] Embodiment: The specific moving process of the working face of this mining method is as follows, wherein, Fig. 3(a), Fig. 3(b), Fig. 3(c), Fig. 3(d), Fig. 3(e), Fig. 3(f ), Fig. 3 (g) is the concrete moving engineering schematic diagram of this mining method. Figure 3(a), 1 in the working plane # The hydraulic support and the loader 17 in the transportation lane 15 at the lower end are connected to each other as a whole through the push jacks 10 between the support bases 4. Before the frame is moved, the mutual push jacks 10 are in a contracted state; Fig. 3(b) coal shearer 12 When cleaning the floating coal upwards, the reloading machine 17 moves forward by a cut depth by its own traveling mechanism, and the reloading machine 17 and 1 # The push jack 10 between the hydraulic supports is stretched out; Fig. 3 (c) after the loader 17 moves to the designated position and stabilizes, 1 # The support strut is unloaded, and the loader 17 and 1 # The push jack 10 between t...

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Abstract

The present invention discloses a working face integrated support and mining method for a steep seam. The working face integrated support comprises a plurality of parallel hydraulic supports; advancing jacks are arranged between the sides of the hydraulic supports, so that adjacent hydraulic supports are fulcrum move advancing supports mutually; the integrated hydraulic support includes an ordinary support portion and a protective type chute, and can undertake dual functions of top board support and working face coal transportation; the advancing jacks arranged between the sides of the hydraulic supports can achieve that that adjacent hydraulic supports are fulcrum move advancing supports mutually. A mining process is as follows: 1, coal cutting: a shearer directly conducts cutting feed in a lane, cuts coal in downlink, and cleans up float coal in uplink; and 2, support advancing: the working face uses a bottom-up order, and a lag shearer conducts support advancing on 3-5 supports by using adjacent supports as fulcrums mutually. The mining method is safe, reliable, simple in process, high in efficiency, and easy to realize equipment stability control and efficient mining in the steep seam fully mechanized coal mining face.

Description

technical field [0001] The invention belongs to the technical field of coal mining methods, and in particular relates to a mining method for mining a steeply inclined coal seam based on a support-transportation integrated steeply inclined hydraulic support and adopting two production processes of coal cutting and frame moving. Background technique [0002] According to statistics, the reserves of steeply inclined coal seams in my country account for about 17% of the total coal reserves, mainly distributed in remote areas of Xinjiang and Qinghai, and coal-deficient areas of Sichuan and Guizhou. Existing mining methods for steeply inclined coal seams mainly include inverted step coal mining method, horizontal layered coal mining method, flexible shield support coal mining method, etc., which have low degree of mechanization, high labor intensity and low mining efficiency, while comprehensive mechanized mining methods use At the same time, because the inclination angle of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21D23/04E21D23/20
Inventor 袁永李波屠世浩伏映鹏孙松李杰
Owner CHINA UNIV OF MINING & TECH
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