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A coal pillar mining method without section in fully mechanized caving stope in thick coal seam

A section coal pillar and mining method technology, applied in ground mining, mining equipment, earthwork drilling and mining, etc., can solve problems such as bottom coal blocking roadways, bottom coal thickness, etc., to prevent rock burst and reduce rock burst possible effects of pressure

Active Publication Date: 2017-02-01
新汶矿业集团有限责任公司华丰煤矿
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Problems solved by technology

[0004] In view of this, an object of the present invention is to propose a method for mining without section coal pillars in fully mechanized caving stopes in thick coal seams, so as to solve the problem that the bottom coal is relatively thick in the prior art and is easily affected by rock bursts to cause bottom coal flushing. The problem of blocking the roadway with the bottom plate

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  • A coal pillar mining method without section in fully mechanized caving stope in thick coal seam

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Embodiment Construction

[0017] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

[0018] Now illustrate in conjunction with accompanying drawing, figure 1 Shown are roadway lay...

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Abstract

The invention provides a fully-mechanized sublevel caving face section-free coal pillar mining method for thick coal layer. The method comprises the following steps: in a thick coal layer, mining is carried out according to a multi-section sequence, wherein the position of a first mining section is higher than that of a second mining section; a ventilation roadway of the current mining section is distributed just above a transportation roadway of the former mining section along a roof of the coal layer; and a transportation roadway of the current mining section is distributed along a bottom plate of the coal layer. With the adoption of the method provided by the invention, the possibility of impact ground pressure on the bottom plate is effectively reduced, so that the dangers that bottom coal is flushed out of the bottom plate and the roadway is blocked are reduced, and the mining safety is improved.

Description

technical field [0001] The invention belongs to the technical field of fully mechanized mining, in particular to a sectionless coal pillar mining method in a fully mechanized caving stope in a thick coal seam. Background technique [0002] The non-section coal pillar mining in fully mechanized caving stope is beneficial to prevent rock burst in section roadways. At present, the method of coal pillar mining without sections, such as "thick coal seam staggered roadway arrangement mining full thickness coal mining method" (patent number: 98100544.6), is to connect the air inlet roadway at both ends of the mining face (generally the transport roadway at the same time) ) and the air return roadway are respectively arranged in different layers of the thick coal seam. In this method, the air return roadway or the transport roadway (the coal roadway near the unmined working face side) of the working face is arranged along the coal seam roof of the lower working face, and in the road...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00
Inventor 王德田庞继禄胡兆锋张宗文闫明晨吴俊杰成云海刘金亮赵成利
Owner 新汶矿业集团有限责任公司华丰煤矿
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