| 区段煤柱中巷支承压力演化规律研究 |
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| 引用本文： | 张艳丽.区段煤柱中巷支承压力演化规律研究[J].现代矿业,2012(6):8-11. |
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| 作者姓名： | 张艳丽 |
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| 作者单位： | 西安科技大学能源学院;教育部西部矿井开采与灾害防治重点实验室 |
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| 摘 要： | 以黄陵某煤矿区段煤柱中巷为背景,采用相似模拟实验方法,研究在充分采动后煤柱的应力分布规律以及在一侧煤柱中开挖巷道过程中另一侧煤柱的应力分布特征,探究上覆岩层的变形破坏规律及应力分布情况。研究结果表明,工作面采动后形成的倒三角结构和在一侧煤柱中开挖巷道是另一侧煤柱压力增大的主要原因,同时得出煤柱失稳垮落后上覆岩层的破坏范围,对巷道支护具有一定的指导意义。
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| 关 键 词： | 相似模拟 煤柱 支承压力 变形破坏 |
Research on Bearing Pressure Evolution Law of Section Pillar Middle Tunnel |
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| Zhang Yanli.Research on Bearing Pressure Evolution Law of Section Pillar Middle Tunnel[J].Modern Mining,2012(6):8-11. |
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| Authors: | Zhang Yanli |
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| Affiliation: | Zhang Yanli1,2(1.School of Energy Engineering,Xi’an University of Science and Technology;2.Key Laboratory of Western Mine Exploitation and Hazard Prevention of Ministry of Education) |
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| Abstract: | Taken the section pillar middle tunnel of a coal mine in Huangling as an example,similar simulation experiment method was adopt to analysis the stress distribution law of coal pillar after full mining and stress distribution characteristic of opposite side pillar during tunnel excavation process in one side pillar,and the deformation and failure law and stress distribution situation of overlying strata were discussed.The test results indicates that inverted triangle structure formed after working face mining and tunnel excavation in one side pillar were the main reasons for stress increasing of opposite side pillar.Meanwhile,destruction line of overlying strata after pillar buckling collapse was obtained,and it has a certain guiding significance to tunnel support. |
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| Keywords: | Similar simulation Coal pillar Abutment pressure Deformation failure |
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