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Underground coal mining area type non-excavation-roadway and non-chain-pillar coal mining method

A coal mining method and technology without coal pillars, applied in ground mining, earth drilling, underground mining, etc., can solve the problems of high excavation costs, long excavation time, waste of coal resources, etc., to reduce excavation costs and reduce excavation personnel Effect

Inactive Publication Date: 2016-11-16
中煤西安设计工程有限责任公司
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Problems solved by technology

In order to ensure the normal connection of mining working faces, each coal mine needs to arrange multiple driving working faces, which requires many people, long driving time, high driving costs, and a large amount of coal resources are wasted by leaving protective coal pillars

Method used

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  • Underground coal mining area type non-excavation-roadway and non-chain-pillar coal mining method
  • Underground coal mining area type non-excavation-roadway and non-chain-pillar coal mining method

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] like figure 1 As shown, a coal mine has excavated three main lanes: auxiliary transport lane 1, belt conveyor lane 2 and return air lane 3.

[0044] In addition, it is necessary to excavate the transportation lane 4 of the first mining area and the auxiliary transportation lane 5 of the first mining area in advance. Five coal mining working faces are arranged in between, and the advancing length of the five working faces is the distance between the auxiliary transportation lane 5 in the first mining area and the return air lane 6 in the first mining area. In addition, it is necessary to excavate the air return lane 14 of the No. 5 working face in advance to connect the three mining area lanes to form a mining area ventilation system. The system formed by these three mining area lanes and No. 5 working face return air lanes is the main feature o...

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Abstract

The invention discloses an underground coal mining area type non-excavation-roadway and non-chain-pillar coal mining method. The coal mining method has the main characteristics that a range suitable for non-excavation-roadway and non-chain-pillar coal mining is assigned, three mining roadways and an end-mining working face ventilation roadway are excavated from a development roadway opening, and the three mining roadways are communicated to form a preparation roadway and a ventilation system for mining areas. The coal mining method comprises the following steps that a working face transportation roadway and a cutting hole of a first working face are excavated to form a first working face mining roadway, and production systems are arranged; the first working face is mined, and a working face ventilation roadway with a certain width is reserved by adopting a gob-side entry retaining technology to be as a second working face transportation roadway; and a third working face mining roadway is formed after a second working face is mined, and subsequent working faces are sequentially mined. Non-excavation-roadway and non-chain-pillar mining is realized. After mining area mining is completed, the three mining roadways can serve for adjacent mining areas and are repeatedly used.

Description

Technical field: [0001] The invention belongs to the technical field of underground coal mine mining, and in particular relates to an underground coal mine mining area type coal mining method without tunneling roadway and without coal pillars. Background technique: [0002] At present, the preparation methods of underground coal mines in my country mainly include mining area type and belt area type. Both of these two preparation methods need to excavate 2 to 4 working face roadways before mining, and a certain width of protective coal pillars needs to be left between adjacent mining working faces. In order to ensure the normal connection of mining working faces, each coal mine needs to arrange multiple driving working faces, which requires many people, long driving time, high driving costs, and a large amount of coal resources are wasted by leaving protective coal pillars. Invention content: [0003] The purpose of the present invention is to provide an underground coal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18
CPCE21C41/18
Inventor 王安祁和刚王昌傲宫守才宋伟郑忠友刘清宝华召文任勇蔡峰朱磊李学强程海星
Owner 中煤西安设计工程有限责任公司
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