义马煤田复杂地质赋存条件下冲击地压诱因研究

doi:10.13722/j.cnki.jrme.2017.0463

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Abstract

Based on the investigation on high burst proneness，high in-situ stress，F₁₆ thrust fault and conglomerate roof，the contributing factors，characteristics and mechanism of coal bursts in Yima mining area are studied. It is indicated that the high burst proneness and high in-situ stress are the major intrinsic factors to induce coal burst. The distribution of horizontal tectonic stress under the existence of F₁₆ trust fault is extremely inhomogeneous, which makes the stress concentration and energy surge in the high stress environment and the surrounding area. The roof and fault are in the unstable conditions under the influence of conglomerate roof separated by F₁₆ thrust fault. These are the main external factors to induce coal burst in Yima mining area.. Therefore，the electromagnetic radiation and support resistance could be observed as the process of increase，decrease，increase again and decrease again before the occurrence of coal bursts. The sudden decrease of indicator could be identifies as precursory information of coal bursts.

Key words： mining engineering Yima mining area coal bursts thrust faults conglomerate roof with large thickness electromagnetic radiation

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0463 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/4085

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