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首页> 外文期刊>E3S Web of Conferences >Study on Failure Law of Mining Process of Narrow Coal Pillars in Fully Mechanized Caving Roadway
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Study on Failure Law of Mining Process of Narrow Coal Pillars in Fully Mechanized Caving Roadway

机译：综放巷道窄煤柱开采破坏规律研究。

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In order to determine the damage law of narrow coal pillars in the roadway along the goaf, taking the 4-5(06) working face of a mine in Xinjiang as the research object, the 3D finite difference software FLAC3D is used to analyse the stress and displacement distribution characteristics of narrow coal pillars in the mining process. The results show that the internal stress of the coal pillar reaches the peak when the narrow coal pillar advances from 11m to 12m, and the coal pillar is subjected to the pre-supporting pressure, the range of the rupture zone is increased, and the bearing capacity is obviously reduced. When the working face advances 65m, the displacement in the coal column reaches a peak, and the deformation of the coal column is more serious. The field test results show that the damage law of the narrow coal pillars in the working face mining process is basically consistent with the simulation results. After the bolts, the cable-stayed anchor cable and the shotcrete, the deformation of the narrow coal pillar is in a controllable range, and the safety production requirements of the working face are realized.
机译：为了确定沿空巷道窄煤柱的破坏规律，以新疆某矿山的4-5（06）工作面为研究对象，采用3D有限差分软件FLAC3D对应力进行了分析。煤柱开采过程中的位移和位移分布特征结果表明，当窄煤柱从11m前进到12m时，煤柱的内应力达到峰值，煤柱受到预支撑压力，破裂区范围扩大，支护容量明显减少。当工作面前进65m时，煤柱的位移达到峰值，煤柱的变形更加严重。现场测试结果表明，窄工作面开采过程中窄煤柱的破坏规律与模拟结果基本吻合。通过锚杆，斜拉锚索和喷浆锚固，使窄煤柱变形在可控范围内，实现了工作面的安全生产要求。

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