Abstract

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.

中文翻译：

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带状崩解过程中含气煤层的动力断裂

摘要

研究的重点是含气煤层的带状崩解理论和地下结构中的气动力现象。煤层不稳定地质力学行为的概念以微裂纹和宏观裂纹过程中变形的不稳定性为条件。在含气煤层的崩解带，煤体释放出吸积的甲烷。由于游离甲烷压力增加，煤层深处出现煤和瓦斯破坏带，可诱发鼓风机、塌陷、突出等气动力事件。得到的地质力学和气动力参数值及关系与实际数据一致。