| 煤矿岩巷爆破掘进大矸的成因分析及控制技术 |
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| 引用本文： | 弥壮壮,杨小军,陈建伟,丁晨曦,林志博.煤矿岩巷爆破掘进大矸的成因分析及控制技术[J].中国矿业,2019,28(7). |
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| 作者姓名： | 弥壮壮 杨小军 陈建伟 丁晨曦 林志博 |
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| 作者单位： | 中国矿业大学北京力学与建筑工程学院,阳煤集团寺家庄公司,阳煤集团寺家庄公司,中国矿业大学北京力学与建筑工程学院,中国矿业大学北京力学与建筑工程学院 |
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| 基金项目： | 国家重点研发计划专项资助(2016YFC0600903)2.弥壮壮(1993—),男,汉,硕士,陕西渭南人,主要从事巷道爆破技术的研究工作。E-mailmizhuangzlm@163.com , YANG Xiao-jun2,CHEN Jian-wei, DING Chen-xi1,LIN Zhi-bo1 |
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| 摘 要： | 岩巷爆破产生大矸石是制约岩巷掘进速度和效率的重要影响因素之一。因此,设计合理的爆破方案对于岩巷掘进十分重要。为了解决寺家庄矿岩巷中深孔快速掘进过程中的大矸与进尺问题,运用LSDYNA软件建立了直眼掏槽和楔直复合掏槽模型,模拟了被爆岩体中有效应力波传播规律及被爆岩体底部的有效应力分布规律并进行现场实验研究。经过数值模拟分析和现场实验对比得到楔直复合掏槽爆破大矸较少,日进尺更高,加快了巷道掘进速度,对类似硬岩巷道的爆破掘进施工具有参考价值。
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| 关 键 词： | 中深孔爆破 大矸 数值模拟 岩巷 |
| 收稿时间： | 2019/1/14 0:00:00 |
| 修稿时间： | 2019/6/26 0:00:00 |
Genetic analysis and control technology of gangue in blasting excavation of rock roadway in coal mine. |
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| MI Zhuang-zhuang,YANG Xiao-jun,CHEN Jian-wei,DING Chen-xi and LIN Zhi-bo.Genetic analysis and control technology of gangue in blasting excavation of rock roadway in coal mine.[J].China Mining Magazine,2019,28(7). |
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| Authors: | MI Zhuang-zhuang YANG Xiao-jun CHEN Jian-wei DING Chen-xi and LIN Zhi-bo |
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| Affiliation: | School of Mechanics and Architectural Engineering,China University of Mining and Technology Beijing,Sijiazhuang Company,Yangmei Group,Sijiazhuang Company,Yangmei Group,School of Mechanics and Architectural Engineering,China University of Mining and Technology Beijing,School of Mechanics and Architectural Engineering,China University of Mining and Technology Beijing |
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| Abstract: | Large waste rock produced by rock roadway blasting is one of the significant factors that restrict the speed and efficiency of rock roadway excavation. Straight-hole cutting and wedge-straight composite cutting models is established by LS-DYNA to simulate the effective stress wave propagation law in the blasted rock mass and the effective stress distribution law at the bottom of the blasted rock mass so as to solve the problem of large gangue and footage in the process of fast deep hole driving in the rock roadway of Sijiazhuang Mine. Through numerical simulation analysis and field experiment comparison, it is found that the wedge-straight composite cutting blasting has less large gangue and higher daily footage, which accelerates the tunneling speed and has reference worth about blasting tunneling construction of similar hard rock roadways. |
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| Keywords: | medium-deep hole blasting large raft Numerical simulation rock lane |
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