| 基于数值模拟的高压采场卸压方案研究 |
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| 引用本文： | 马春德,谭观霜,侯奎奎,谢伟斌,徐家庆. 基于数值模拟的高压采场卸压方案研究[J]. 矿冶工程, 2022, 42(2): 1-4. DOI: 10.3969/j.issn.0253-6099.2022.02.001 |
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| 作者姓名： | 马春德 谭观霜 侯奎奎 谢伟斌 徐家庆 |
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| 作者单位： | 1.中南大学 资源与安全工程学院,湖南 长沙 410083; 2.山东黄金集团深井开采实验室,山东 莱州 261442 |
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| 基金项目： | 国家自然科学基金(52074352)； |
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| 摘 要： | 为了安全开采含有较多采空区的矿体,制定了2种卸压方案,并采用FLAC3D软件对矿体进行建模,模拟并分析了其卸压效果.结果表明,采用方案1(卸压巷道与凿岩巷道呈"非"字形、相邻卸压巷道间隔10 m)时,最小主应力在凿岩巷道两边及顶板附近分别从8 MPa和9 MPa降至5 MPa和8 MPa,最大主应力变化不大;采用方案2...
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| 关 键 词： | 岩爆 深部巷道 卸压 数值模拟 凿岩巷道 采空区 |
| 收稿时间： | 2021-10-29 |
Pressure Relief Scheme of High-Pressure Stope Based on Numerical Simulation |
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| MA Chun-de,TAN Guan-shuang,HOU Kui-kui,XIE Wei-bin,XU Jia-qing. Pressure Relief Scheme of High-Pressure Stope Based on Numerical Simulation[J]. Mining and Metallurgical Engineering, 2022, 42(2): 1-4. DOI: 10.3969/j.issn.0253-6099.2022.02.001 |
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| Authors: | MA Chun-de TAN Guan-shuang HOU Kui-kui XIE Wei-bin XU Jia-qing |
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| Affiliation: | 1.School of Resources and Safety Engineering,Central South University, Changsha 410083, Hunan, China; 2.Deep Well Mining Laboratory of Shandong Gold Group, Laizhou 261442, Shandong, China |
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| Abstract: | In order to safely mine ore bodies with several goafs, two kinds of pressure relief schemes were prepared, and a model was established for the ore body by using FLAC3D software to simulate and analyze the pressure relief effect. The results show that by adopting the scheme 1 (the pressure relief tunnels and the drilling tunnels are arranged in the shape of a fishbone with a spacing of 10 m), the minimum principal stress on both sides of the drilling tunnel and near the roof decreases from 8 MPa and 9 MPa to 5 MPa and 8 MPa, respectively, while the maximum principal stress changes little. And with the scheme 2 (the pressure relief tunnels are in a staggered arrangement with a spacing of 20 m), the minimum principal stress at the intersection of drilling tunnel and pressure relief tunnel is reduced from 8 MPa to 4 MPa, and the maximum principal stress near the roof of the lower drilling tunnel is reduced from 24 MPa to 20 MPa. The simulation results show that scheme 2 is superioir to scheme 1 in the pressure relief effect. The application of scheme 2 in the Xiaochangba mining area showed 600,000 tons of ore bodies were safely mined out. It is concluded that this research result is of certain reference for the engineering practice of tunnel pressure relief. |
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| Keywords: | rockburst deep roadway pressure relief numerical simulation drilling tunnel goaf |
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