Shield support and support method for bow pseudo-inclined fully mechanized coal mining face

A technology of fully mechanized mining face and shielding support, which is applied in the direction of mine roof support, mining equipment, earthwork drilling, etc. resistance, increased blocking, and reduced impact and squeezing effects

Inactive Publication Date: 2015-01-28
四川省华蓥山煤业股份有限公司李子垭南煤矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the advancing process, after the upper support is advanced, it will cause the gangue to fall and impact and squeeze the lower support. The impact and extrusion of a large amount of gangue will cause the support to slide. The defect of high energy consumption

Method used

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  • Shield support and support method for bow pseudo-inclined fully mechanized coal mining face
  • Shield support and support method for bow pseudo-inclined fully mechanized coal mining face
  • Shield support and support method for bow pseudo-inclined fully mechanized coal mining face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1, see figure 1 , figure 2 , image 3 , Figure 4 , a shielding support for a fully-mechanized mining face with a downward pseudo-incline, the fully-mechanized mining support is composed of a first hydraulic support 1 and a second hydraulic support 2 in pairs, and the top beams of the first hydraulic support 1 and the second hydraulic support 2 have a top beam overlooking the profile Both trapezoids are trapezoidal, and the two trapezoids are combined to form a parallelogram. When the first hydraulic support 1 and the second hydraulic support 2 are arranged on the pseudo-inclined working face, one set of parallel sides of the parallelogram is parallel to the advancing direction of the working face, and the other A group of parallel sides is longitudinally parallel to the chute 6 of the coal mining equipment, and the first hydraulic support 1 is located above the second hydraulic support 2, and the trapezoidal upper bottom of the first hydraulic support 1 is l...

Embodiment 2

[0028] Example 2, see figure 1 , figure 2 , image 3 , Figure 4 , a support method for fully-mechanized working faces with dipped pseudo-inclines, characterized in that it comprises the following steps:

[0029] S1. Lay out the shield support: set a plurality of shield supports described in the technical solution for realizing the first purpose of the present invention in the fully mechanized mining face of the inclined pseudo-incline to form a support system for the working face, so that the gangue blocking device at the rear end of the first hydraulic support 1 It is located behind the second hydraulic support 2 and forms a barrier to the gangue in the goaf behind the first hydraulic support 1 and the second hydraulic support 2, and the first hydraulic support 1 and the second hydraulic support 2 are connected to the mining area by advancing the oil cylinder 7 respectively. The 6 connections of the coal equipment;

[0030] S2. Support: lift the top beam 3 of the first ...

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PUM

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Abstract

The invention discloses a shield support and a support method for a bow pseudo-inclined fully mechanized coal mining face. The fully mechanized coal mining support takes the shape of an overlook parallelogram which is constituted by first trapezoidal hydraulic supports and second trapezoidal hydraulic supports in pairs; the first hydraulic supports are positioned above the second hydraulic supports; the rear ends of the first hydraulic supports are provided with waste rock stop devices of which the waste rock stop amplitude in the height direction increases and decreases along with rise and fall of a top beam of the first hydraulic supports; the waste rock stop devices have waste rock stop width extending to the support width of the second hydraulic supports. The method comprises the steps of arranging the shield support, supporting, pushing and advancing the support, wherein the step of arranging the shield support comprises a sub-step of arranging a plurality of shield supports in the bow pseudo-inclined fully mechanized coal mining face, so that the waste rock stop devices of the first hydraulic supports are positioned on the rear sides of the second hydraulic supports to form stop for waste rocks at gobs on the rear sides of the shield supports. The shield support and the support method have the beneficial effects that the supports are formed in pairs and the waste rock stop devices are formed on the upper supports, and the shield support method guarantees stable supporting in a sequential descending and ascending staggered advancing mode.

Description

technical field [0001] The invention relates to comprehensive mechanized coal mining technology in underground coal mines, in particular to a shielding bracket and a supporting method for a fully mechanized coal mining face with a downward pseudo-incline. Background technique [0002] Steeply inclined coal seam refers to a coal seam with an inclination angle greater than 45°, which has the characteristics of wide distribution in my country, complex occurrence conditions, and difficult mining. Due to the backward mining technology and the large number of domestic mines. Therefore, in recent years, there have been many major accidents in our country. Due to the narrow mining space of the steeply inclined coal seam, the large inclination angle of the working space, the high risk of equipment slipping, and the potential threats such as coal mine gangue splashing, it is difficult for personnel to operate. At the same time, its coal seam structure is complex, with folds and faul...

Claims

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Application Information

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IPC IPC(8): E21D23/06E21D23/03E21D23/08
CPCE21D23/03E21D23/0004E21D23/06E21D23/16
Inventor 秦云文王建新郑小俊邓志学李正军杨明平
Owner 四川省华蓥山煤业股份有限公司李子垭南煤矿
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