Large-inclination-angle coal bed fully-mechanized mining bracket and support method

A technology of fully mechanized mining support and large inclination angle, applied in the direction of mine roof support, mining equipment, earthwork drilling, etc., can solve the problems of impact damage to the shielding support, the overall sliding of the shielding support, etc., and achieve the effect of improving stability.

Inactive Publication Date: 2014-12-17
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, with this propulsion method, after one stage of advancement, the multiple shielding supports of the next stage need to bear the impact of many gangue sliding after the adjacent previous stage is advanced, which will easily cause the overall slide of the next stage of shielding supports or the uppermost shielding support of this section. impact damage

Method used

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  • Large-inclination-angle coal bed fully-mechanized mining bracket and support method
  • Large-inclination-angle coal bed fully-mechanized mining bracket and support method
  • Large-inclination-angle coal bed fully-mechanized mining bracket and support method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1, see figure 1 , figure 2 , image 3, a fully-mechanized coal mining support with a large dip angle, the fully-mechanized mining support is composed of a first hydraulic support 1 and a second hydraulic support 2 in pairs, the first hydraulic support 1 is located above the second hydraulic support 2, and the rear of the first hydraulic support 1 The end is provided with a gangue retaining device, the gangue retaining device is composed of an upper gangue retaining wall and a lower gangue retaining wall, the upper gangue retaining wall is hinged on the upper end of the upper link 12 hinged with the top beam 11 on the first hydraulic support 1, and the lower retaining wall The gangue wall is hinged at the lower end of the upper connecting rod 12, and the lower gangue wall is located in front of the upper gangue wall. When the top beam 11 of the first hydraulic support 1 supports the roof of the coal mining face, the upper gangue wall and the lower gangue wall ...

Embodiment 2

[0026] Example 2, see figure 1 , figure 2 , image 3 , a fully mechanized mining support method for a large dip angle coal seam, comprising the following steps:

[0027] S1. Lay out the cover support: set a plurality of fully mechanized coal mining supports with a large inclination angle described in Embodiment 1 in the fully mechanized coal mining working face with a large inclination angle, so that the gangue blocking device at the rear end of the first hydraulic support 1 is located behind the second hydraulic support 2, And form a block to the gangue in the goaf behind the first hydraulic support 1 and the second hydraulic support 2, and respectively connect the first hydraulic support 1 and the second hydraulic support 2 with the chute 6 of the coal mining equipment through the propelling cylinder 5;

[0028] S2. Support: lift the top beam 3 of the first hydraulic support 1 and the second hydraulic support 2 through the lifting cylinder respectively, so that the first ...

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Abstract

The invention discloses a large-inclination-angle coal bed fully-mechanized mining bracket and a support method. The fully-mechanized mining bracket consists of a pair of first hydraulic bracket and second hydraulic bracket, wherein the first hydraulic bracket is positioned above the second hydraulic bracket; a gangue blocking device of which the gangue blocking amplitude can be increased and decreased along with the ascending and descending of a top beam of the first hydraulic bracket is arranged at the back end of the first hydraulic bracket along the height direction; the gangue blocking device has a gangue blocking width which extends to the support width of the second hydraulic bracket. The method comprises the steps of shield support arrangement, supporting, pushing and support movement, wherein the step of shield support arrangement comprises the following specific steps: arranging a plurality of large-inclination-angle coal bed fully-mechanized mining brackets in a large-inclination-angle coal bed fully-mechanized mining working face; positioning the gangue blocking devices of the first hydraulic brackets behind the second hydraulic brackets; blocking gangue in a goaf behind the first hydraulic brackets and the second hydraulic brackets. The fully-mechanized mining bracket has the beneficial effects that the brackets are arranged pairwise, and the gangue blocking device is formed on the bracket above; according to a shield support method, the system supporting stability during supporting and support movement is ensured through a staggered advancing way.

Description

technical field [0001] The invention relates to comprehensive mechanized coal mining technology in underground coal mines, in particular to a fully mechanized coal mining support and support method for large dip angle coal seams. Background technique [0002] High-dip-angle coal seams refer to coal seams with an inclination angle of 35° to 45°, which have 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. In order to reduce and eliminate coal mining safety accidents, fully mechanized mining technology has been more and more widely used in the mining of high-inclination coal seams. The cover of the fully mechanized mining face is realized by a support system formed by multiple hydraulic support supports, and the back end of each hydraulic support is equipped wi...

Claims

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Application Information

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IPC IPC(8): E21D23/04E21D23/03E21D23/20
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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