| 基于微震监测的近直立特厚煤层冲击危险区域划分 |
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| 引用本文： | 刘旭东,张玉良,田向辉. 基于微震监测的近直立特厚煤层冲击危险区域划分[J]. 煤炭工程, 2020, 52(1): 70-74. DOI: 10.11799/ce202001015 |
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| 作者姓名： | 刘旭东 张玉良 田向辉 |
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| 作者单位： | 神华新疆能源有限责任公司 |
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| 基金项目： | 国家重点研发计划;国家自然科学基金;国家自然科学基金 |
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| 摘 要： | 为对乌东煤矿南区近直立特厚煤层工作面冲击地压危险区域进行划分,综合利用地应力测试、煤岩物理力学实验等研究方法确定了近直立煤层冲击地压致灾因素。建立了上分层煤层开采期间的不同微震等级与冲击危险区域的内在联系,同时基于上下分层相似原理划分了+450水平B3+6工作面冲击危险区域。结果表明：近直立特厚煤层同一煤层上下分层开采,冲击地压危险区域具有相似性和反复性。研究结果对近直立煤层冲击危险区域划分有一定的指导意义。
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| 关 键 词： | 近直立特厚煤层 冲击地压 微震监测 相似原理 |
| 收稿时间： | 2018-09-06 |
| 修稿时间： | 2018-11-18 |
Dividing the Impact Danger Zone of Steeply-inclined and Extremely-thick Coal Seam Based on Microseismic Monitoring |
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| Abstract: | In order to realize the division of the impact danger zone of steeply-inclined and extremely-thick coal seam in the south mining area of Wudong Coal Mine, the influencing factors of rockburst were determined by comprehensive means such as the in-situ stress tests and the physico-mechanical experiments of coal and rock etc. The intrinsic relationship between different microseismic levels during the mining of upper strata and impact hazard areas was established. At the same time, based on the principle of similarity between the upper and lower strata, the impact zone of the +450 horizontal No. B3+6 fully mechanized top-coal caving face was divided. The results show that the impact hazard areas of the upper and lower layers of the same coal seam in steeply-inclined and extremely-thick coal seam are similar and repeatable if they are mined at the same time. The research results have certain guiding significance for the division of impact hazard zones in the steeply-inclined coal seam. |
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