Recovery method of common combined mining working face hydraulic support

A fully mechanized mining face and hydraulic support technology, which is applied to mine roof supports, pillars/supports, mining equipment, etc., to achieve the effects of fast recovery, high safety factor, and saving human resources

Active Publication Date: 2011-02-16
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Problems solved by technology

[0003] In order to solve the problem of recovery of coal mine hydraulic support in small and medium-sized mines, the present invention provides a method for recovering hydraulic support of common fully mechanized mining face

Method used

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  • Recovery method of common combined mining working face hydraulic support
  • Recovery method of common combined mining working face hydraulic support
  • Recovery method of common combined mining working face hydraulic support

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Embodiment Construction

[0009] A method for recovering a hydraulic support in a common fully mechanized mining face, such as figure 1 As shown, if there are 100 supports to be recovered in front of the work, start from the work surface, such as figure 2 As shown, the penultimate hydraulic support 2 is first pulled out and raised on the side of the coal wall as the No. 1 cover frame, and the original roof is supported by "one beam and four columns" at the original position of the penultimate hydraulic support, as shown in image 3 As shown, the penultimate hydraulic support 1 is cable-stayed as the No. 2 shield frame; as Figure 4 As shown, then the penultimate fourth hydraulic support 4 is pulled out and transported away, and at the same time, "one beam and four columns" is used to support the original roof at the original position of the penultimate fourth hydraulic support, as shown in Figure 5 As shown, the penultimate hydraulic support 3 is tilted as the No. 3 shield frame, as Figure 6 As sh...

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Abstract

The invention relates to an underground recovery method of a common combined mining working face hydraulic support, which is used in medium and small coal mines and solves the problem of coal mine hydraulic support recovery of medium and small mines. The method is as follows: from a working face, drawing the last but one hydraulic support to support on a coal wall side, hoisting to serve as an No.1 cover rack, and tilting the last one hydraulic support as an No.2 cover rack; withdrawing and exporting the hydraulic support which is the fourth from the bottom, and tilting the hydraulic support which is the third from the bottom as an No.3 cover rack; after withdrawing the hydraulic supports which are the fourth from the bottom, the fifth from the bottom and the sixth from the bottom, straightening the No.3 cover rack, the No.2 cover rack and the No.1 cover rack to gradually; and replacing all roof supports by the No.3 cover rack, the No.2 cover rack and the No.1 cover rack, thus, along with the withdrawing of supports, the three cover racks are alternately advanced to assure successive recovery of the combined mining face support. Thus, the invention has higher safety factor, simple working procedure and high recovery speed and saves manpower resource.

Description

technical field [0001] The invention relates to a method for recovering a hydraulic support of a common fully mechanized mining face in a small and medium-sized coal mine. Background technique [0002] At present, with the continuous popularization and application of mechanical equipment of ordinary fully mechanized mining face in various small and medium coal mines in my country, the frequency of using medium and small hydraulic supports in each working face is getting higher and higher, and it has become a commonly used method for cutting eyes in fully mechanized mining face. Primary roof support equipment. Since the recovery space of the fully mechanized mining face of small and medium-sized coal mines is relatively narrow, cranes and forklifts cannot be used for recovery like large coal mines. There are: 1. Due to the use of multiple single columns to support the roof during recycling, the recycling efficiency is relatively low and the process is relatively complicated. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/16E21D15/60
Inventor 张文斌田志勇席刚李淑锋杨文晋
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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