| 浅埋深薄基岩矿井综放工作面导水裂缝带发育规律研究 |
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| 引用本文： | 徐建国.浅埋深薄基岩矿井综放工作面导水裂缝带发育规律研究[J].中国煤炭,2019(7):98-105. |
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| 作者姓名： | 徐建国 |
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| 作者单位： | 兖州煤业鄂尔多斯能化有限公司 |
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| 摘 要： | 转龙湾煤矿首采工作面煤层埋深160m左右,基岩厚度60~120m,属于浅埋薄基岩开采.本文分析了转龙湾煤矿II-3煤层覆岩特征,井下现场探测了首采试验区的采动覆岩破坏导水裂缝带发育高度,采用有限差分数值仿真方法模拟了薄基岩浅埋煤层综放开采条件下的覆岩运移破坏过程.研究表明,采动覆岩塑性破坏区的形态经历了“马鞍形”“拱(箱)形”的演化发育过程;随着采动空间的增大,采空区两端超前破坏裂隙扩展速度较中部变慢,最大导水裂缝带发育高度位于采空区中部,裂采比为20.
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| 关 键 词： | 导水裂缝带 浅埋薄基岩开采 首采工作面 数值模拟 |
Study on developing law of water-conducting fracture zone in fully mechanized caving face in shallow buried coal mine with thin bedrock |
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| Xu Jianguo.Study on developing law of water-conducting fracture zone in fully mechanized caving face in shallow buried coal mine with thin bedrock[J].China Coal,2019(7):98-105. |
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| Authors: | Xu Jianguo |
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| Affiliation: | (Ordos Energy and Chemical Industry Co., Ltd., Yanzhou Coal Mining Company Limited,Ordos, Inner Mongolia 017010, China) |
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| Abstract: | Xu Jianguo(Ordos Energy and Chemical Industry Co., Ltd., Yanzhou Coal Mining Company Limited,Ordos, Inner Mongolia 017010, China) |
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| Keywords: | water-conducting fracture zone shallow buried mining with thin bedrock first mining face numerical simulation |
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