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A method of passing through the high rise area along the trench in fully mechanized mining face

A technology for fully mechanized mining face and high-risk area, which is applied in ground mining, mining equipment, underground mining, etc. It can solve problems such as unsafe construction and affecting mine mining, and achieve the effect of preventing the end support from toppling

Active Publication Date: 2019-11-19
DATONG COAL MINE GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the high-risk area affects mine excavation and the construction is unsafe when passing through the high-risk area, the present invention provides a method for passing through the fully-mechanized mining face along the trough with the high-risk area

Method used

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  • A method of passing through the high rise area along the trench in fully mechanized mining face
  • A method of passing through the high rise area along the trench in fully mechanized mining face

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Embodiment 1

[0022] A method for passing a high-risk area of ​​a fully mechanized mining face along a trough, comprising the following steps:

[0023] a. Set up artificial false roofs in the high-risk area in advance. During construction, according to the section width of the roadway and the length of the high-risk area, two rows of anchor cables are arranged in the high-risk area according to the center line of the roadway; The height of the back alley is 2.5 meters, and the top of the shed beam is braked with square wood in a "well" shape, and the length of the shed beam is consistent with the width of the roadway;

[0024] b. After the brake roof is supported, the coal wall at a distance of 3m before and after the high risk area and the coal wall below the high risk area are drilled and injected every 5m along the roadway. The injection is stopped until the amount of powder is overflowed from the coal wall;

[0025] c. Advance support, 20m away from the high-risk area in the headway...

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Abstract

The invention relates to a method for the high-rise area along the channel of the fully mechanized mining face, and adopts the construction method of anchor cables and I-beams combined with square timber, so that the space of the high-rise area is combined into a whole to form a false roof, and then On the coal wall at the position 3m before and after the high-risk area and on the coal wall below the high-risk area, holes are drilled along the direction of the roadway to inject the hardened coal wall of Ma Lisan. 30m and below the high-risk area are supported by 3 single hydraulic props per row, and the shed is erected under the shed beam. When the beam is used, the hydraulic single column is retracted until it passes through the high-rise area; the erection of the I-steel lifting shed can stabilize the upper "well" wooden stack, and will not cause the inverted stack due to the rack. The method of the present invention enables the working surface to be quickly Through the high-risk area, the end bracket is prevented from toppling, so as to realize the high production and high efficiency of the fully mechanized mining face.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for passing a fully mechanized mining face along a trough with high risk. Background technique [0002] It means that in the process of driving into roadway, due to the complex geological conditions, the annihilation and absence of the marking layer and the unstable occurrence of the upper layer of coal seam, the roadway is driven through the layers, resulting in the formation of a high-rise area at the working face, and the height of the riser reaches 3- 5m. In the process of excavation and support, due to the influence of geological conditions and mining, such high-rise areas are often encountered. The width, length and height of the high-rise areas are often different, and the roof of these areas does not completely fall. If it is compacted, the roadway cannot pass directly under the falling gangue. If it is not handled properly, it will not only affect the minin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D19/02E21D20/00E21D23/00E21D15/44E21C41/18
CPCE21C41/18E21D15/44E21D19/02E21D20/003E21D23/0004
Inventor 王佳亮李俊成王军刘栓柱张海东
Owner DATONG COAL MINE GRP
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