Anti-collapse structure beside roadway based on breaking roof 110 construction method

A technology for crushing roofs and roadways, which is applied in ground mining, shaft lining, tunnel lining, etc., can solve problems such as mine disasters and high pressure, and achieve the effects of ensuring safety, reducing impacts, and increasing mining rates

Active Publication Date: 2015-12-09
何满潮
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  • Application Information

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Problems solved by technology

However, when mining without coal pillars, due to the characteristics of the pressure on the roof of the longwall beam, there will be periodic pressure. This periodic pressure is not only high in pressure, but also has a great destructive force on the coal mining face. Mining disaster

Method used

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  • Anti-collapse structure beside roadway based on breaking roof 110 construction method
  • Anti-collapse structure beside roadway based on breaking roof 110 construction method

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Embodiment Construction

[0018] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various changes in different embodiments without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature and not limiting. this invention.

[0019] Longwall mining 110 method is a new type of coal mining method, which is characterized in that one working face only corresponds to one roadway, and no coal pillars are required.

[0020] The roadside collapse prevention structure of the broken roof 110 construction method of the present invention is applied to the 110 construction method. Such as figure 1 As shown, in this exemplary embodiment, the roadway 1 is retained after mining, roof cutting and pressure relief at the previous working face, and the roof 2 of the roadway 1 is arched.

[0021] In th...

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Abstract

The invention discloses an anti-collapse structure beside a roadway based on a breaking roof 110 construction method. The anti-collapse structure is applied to the 110 construction method. One working face of the 110 construction method corresponds to the roadway, no coal pillar needs to be reserved, and the roadway is retained after mining roof cutting and pressure relieving of the roadway are completed on the previous working face. Moreover, a top plate of the roadway is arched. Directional joint cutting is conducted on one side of the top plate of the roadway, and the joint cutting angle is 15-20 degrees. According to the anti-collapse structure beside the roadway, when underground mining is conducted, one working face corresponds to the roadway, and no coal pillar needs to be reserved, so that resources are saved and the coefficient of mining is increased. Besides, the top plate of the retained roadway is arched, so that the safety is improved; the safety of the coal mining working face is guaranteed. In addition, the joint cutting angle is 15-20 degrees, the caving direction of the top plate after roof cutting can be effectively guaranteed, and the influence on roadway retaining by top plate caving is reduced to the greatest extent.

Description

technical field [0001] The invention relates to the coal pillar-free mining technology, in particular to a roadside collapse prevention structure in the coal pillar-free mining process. Background technique [0002] At present, in the process of longwall mining, the 121 construction method is adopted, that is, two roadways need to be excavated in one working face, and a coal pillar is left as a support. In this structure, coal pillars need to be reserved, resulting in a large waste of resources. Moreover, each working face needs to excavate two roadways, and the working efficiency is low. [0003] In order to save energy, coal pillarless mining technology is gradually applied. However, when mining without coal pillars, due to the characteristics of the pressure on the roof of the longwall beam, there will be periodic pressure. This periodic pressure is not only high in pressure, but also has a great destructive force on the coal mining face. A mine accident occurred. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21D11/00
CPCE21D9/00E21D20/00E21C41/18E21D11/00E21D15/00E21D21/00
Inventor 郭志飚何满潮
Owner 何满潮
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