Steep dip medium-thickness coal seam coal-mining device and mechanical method

A technology of coal mining device and steep inclination is applied in the field of coal mining device of steep incline medium and thick coal seam, which can solve the problems of low recovery rate, low coal mining efficiency, high labor intensity, etc., so as to improve coal mining efficiency and recovery rate, reduce The effect of coal mining labor intensity and high coal seam recovery rate

Active Publication Date: 2014-07-30
王洁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible cover support coal mining method is to set up a flexible cover support on the coal mining face. Due to the limitation of the existing flexible support structure, it is usually only applicable to the coal mining method of artificial blasting and falling coal.
Its labor intensity is high, the efficiency is low, and the safety is poor
In short, the aforementioned coal mining methods either have the defects of high labor intensity and low coal mining efficiency, or have defects such as low recovery rate and poor safety.
Especially for steeply inclined coal seams with large inclination angles, these shortcomings are particularly prominent

Method used

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  • Steep dip medium-thickness coal seam coal-mining device and mechanical method
  • Steep dip medium-thickness coal seam coal-mining device and mechanical method
  • Steep dip medium-thickness coal seam coal-mining device and mechanical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, see figure 1 , figure 2 , image 3 , Figure 4 , a coal mining device for steeply inclined medium-thick coal seams, comprising an integrated coal mining and transporting machine, a hydraulic system, and a control system. The coal cutting tooth 1 on the conveying scraper 2, the conveying scraper 2 drives its circular movement through the annular traction chain, and the coal mining and transportation integrated machine is fixedly connected with the gantry hanger 4 through the upper ends of both sides of the frame 3, the Above the hanger 4, there are a plurality of crossbeams 8 arranged in parallel in an I-shaped steel structure, and a moving part 5 is slidably connected to each crossbeam 8, and the moving part 5 is suspended by rollers supported on both sides of the I-shaped rail of the crossbeam 8 by rolling. On the beam 8; the lower part of the moving part 5 is hinged with a vertically arranged feed cylinder 6; a plurality of moving parts 5 are coaxial wi...

Embodiment 2

[0038] Example 2, see figure 1 , figure 2 , image 3 , Figure 4 , a method of mechanized coal mining in steeply inclined medium-thick coal seams, comprising the following steps:

[0039] In the first step, an opening is formed at the upper end of the steeply inclined coal seam 12, and a return airway 13 and a coal dropout 14 communicated with the transport roadway are respectively excavated downward along the inclined direction of the steeply inclined coal seam 12 at both ends of the cutout;

[0040] In the second step, set up a shield bracket 15 to control the roof in the cut hole, and fix the coal mining device of the first embodiment of the present invention on the shield bracket 15 through its plurality of beams 8, so that the mining and transportation of coal in the coal mining device The all-in-one machine is suspended above the top of the coal seam, and the all-in-one coal mining and transporting machine is adjusted to the initial state of leaning to the coal mini...

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Abstract

The invention discloses a steep dip medium-thickness coal seam coal-mining device and a mechanical coal mining method. The device comprises a coal mining and conveying all-in-one machine, a hydraulic system and a control system, wherein coal interception teeth are arranged on a conveying scraper blade of the coal mining and conveying all-in-one machine; the upper ends of two sides of a stander of the coal mining and conveying all-in-one machine are fixedly connected with portal hanging brackets; cross beams are arranged above the hanging brackets and are connected with moving components hinged to feeding oil cylinders; the other end of each feeding oil cylinder is connected with the corresponding hanging bracket; a transverse pushing oil cylinder is connected between each moving component and the corresponding cross beam; all the feeding oil cylinders and all the transverse pushing oil cylinders are connected with the hydraulic systems; piston rods of all the feeding oil cylinders and all the transverse pushing oil cylinders respectively correspond to form synchronous telescoping. The coal mining method realizes laying-down continuous coal mining and conveying by adopting the device. The steep dip medium-thickness coal seam coal-mining device and the mechanical coal mining method have the beneficial effects that the coal mining efficiency and the recovery rate can be effectively increased, the coal mining labor intensity is alleviated, and the mechanical degree is high; the coal mining method is the specific application of the coal mining device, so that the coal seam recovery rate is high, and the mechanical degree is high.

Description

technical field [0001] The invention relates to the technical field of steeply inclined medium-thick coal seam mining, in particular to a steeply inclined medium-thick coal seam coal mining device and a mechanized method. Background technique [0002] The mining efficiency of steeply inclined coal seams has always been a technical problem in this field. Existing mining methods for steeply inclined coal seams mainly include inverted bench mining method, pseudo oblique trend longwall mining method, wire rope sawing coal mining method and flexible shield support mining method. The inverted step coal mining method can be used for the recovery of various high-inclination coal seams, but due to its shortcomings such as high labor intensity, low production efficiency, and heavy roof management workload, it is less and less used at present. The longwall coal mining method with downward pseudo-inclined trend is to arrange a fully-mechanized mining face with a downward pseudo-inclina...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F13/06
Inventor 王洁韩志华王宏李诚
Owner 王洁
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