DYNAMIC FRACTURE OF GAS-BEARING COAL SEAM DURING ZONAL DISINTEGRATION

被引：2
|
作者：
Odintsev, V. N. [1 ]
Makarov, V. V. [2 ]
机构：
[1] Russian Acad Sci, Academician Melnikov Res Inst Comprehens Exploita, Moscow 111020, Russia
[2] Far Eastern Fed Univ, Vladivostok 690600, Russia
来源：
JOURNAL OF MINING SCIENCE | 2020年 / 56卷 / 06期
关键词：
coal seam; zonal disintegration; tensile fractures; methane diffusion; gas pressure; blower; sloughing; HIGHLY-STRESSED ROCK; MASS; MECHANISM; OUTBURST; MODEL; METHANE; STATE;
D O I：
10.1134/S106273912006006X
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
The study focuses on the theory of zonal disintegration in gas-bearing coal seams and on gas-dynamic phenomena in underground structures. The concept of unstable geomechanical behavior of coal seams is conditioned by instability of deformation during micro-cracking and macro-cracking. In the zone of disintegration in a gas-bearing coal seam, occluded methane releases from coal substance. As a result of increasing pressure of free methane, a zone of damaged coal and gas appears deep in the coal seam and can induce such gas-dynamic events as blower, sloughing and outbursting. The obtained values and relations of geomechanical and gas-dynamic parameters agree with the actual practice data.
引用
收藏
页码：932 / 946
页数：15
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