| 基于FLAC3D的大采高工作面过向斜构造的矿压显现规律 |
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| 引用本文： | 刘建锋.基于FLAC3D的大采高工作面过向斜构造的矿压显现规律[J].中州煤炭,2018,0(10):207-210. |
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| 作者姓名： | 刘建锋 |
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| 作者单位： | （西山煤电（集团） 西铭矿，山西 太原 030000） |
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| 摘 要： | 为了深入了解大采高工作面围岩与支架的关系，采用FLAC3D数值模拟，研究了工作面不同开采阶段，不同工作面推进下垂直应力场分布、垂直位移场以及塑性破坏场。研究而得出:当工作面初采阶段时，在工作面5~15 m，应力易产生集中，并随着工作面的继续推进，应力集中程度也逐渐增大，采场顶板的下沉量与围岩破坏范围也逐渐增大。工作面过向斜构造阶段:煤壁前方的垂直应力、垂直位移以及塑性区破坏范围都发生了明显的变化，矿压显现剧烈，煤壁片帮，直接顶冒落现象严重。上述研究为控制采场围岩稳定提供了技术基础。
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| 关 键 词： | 3D数值模拟' target='_blank'>FLAC3D数值模拟 向斜构造 垂直应力场分布 垂直位移场 塑性破坏场 |
Strata behavior regularity of over-diagonal structures of large mining height working face based on FLAC3D |
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| Liu Jianfeng. Strata behavior regularity of over-diagonal structures of large mining height working face based on FLAC3D[J].Zhongzhou Coal,2018,0(10):207-210. |
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| Authors: | Liu Jianfeng |
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| Affiliation: | （Ximing Coal Mine，Xishan Coal & Electricity Group，Taiyuan 030000，China） |
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| Abstract: | In order to understand the relationship between the surrounding rock and the support of the large mining face，the vertical stress field distribution，the vertical displacement field and the plastic damage field of the working face are studied by FLAC3D numerical simulation.When the working face is in the initial stage，the stress is concentrated in the working face of 5~15 m，and the stress concentration gradually increases with the continuous face of the working face，and the sinking amount of the roof and the surrounding rock are destroyed，the scope is gradually increasing.The vertical stress，vertical displacement and the damage range of the plastic zone in the front of the coal wall are obviously changed，the pressure of the coal strata is severe，the wall is directly affected，and the direct roof is serious.Field rock stability to provide technical basis. |
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| Keywords: | ,3D numerical simulation' target='_blank'>FLAC3D numerical simulation, diagonal structure, vertical stress field distribution, vertical displacement field, plastic failure field |
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