张晓垒,权军军,杨港,段守德,郭明功,朱坤飞,邱黎明

• 1:平顶山天安煤业股份有限公司八矿
• 2:北京科技大学资源与安全工程学院

摘要(Abstract)：

以平煤八矿深部近距离煤层群开采为工程背景，通过理论计算、数值模拟以及现场实验研究，对深部煤层群开采条件下煤柱应力演化规律与优化设计方法进行了全面的分析和研究。建立了FLAC~(3D)数值模型，模拟了煤柱宽度为3～10 m时地层的应力场和位移场演化规律。结果表明，煤柱的宽度高于5 m后，煤柱的变形逐渐下降，抗变形能力增加，煤柱的宽度高于7 m后，煤柱内的煤体应力集中程度逐渐增加，巷道变形程度逐渐增大，并且在己_(16,17)近距离相邻煤层内会产生大范围的高应力集中现象，不利于巷道维护和己_(16,17)煤层的瓦斯治理。深部近距离煤层群开采条件下，煤柱的合理留设宽度在5～7 m。通过现场工业实验，有效验证了煤柱留设宽度为6m条件下的可靠性。

关键词(KeyWords)： 深部开采煤层;煤柱宽度;数值模拟;变形监测;瓦斯监测

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（52004016）;; 贵州省科技支撑计划项目（[2023]380）

作者(Author): 张晓垒,权军军,杨港,段守德,郭明功,朱坤飞,邱黎明

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