| 卢亚峰.采空区影响下露天煤矿边坡稳定性研究[J].矿产勘查,2024,15(S1):77-83 |
| 采空区影响下露天煤矿边坡稳定性研究 |
| Slope stability of open-pit coal mines under the influence of goaf |
| 投稿时间：2024-04-26 修订日期：2024-05-14 |
| DOI：10.20008/j.kckc.2024s1012 |
| 中文关键词: 采空区 边坡稳定性 数值模拟 |
| 英文关键词: goaf slope stability numerical simulations |
| 基金项目:《矿产勘查》杂志是经国家新闻总署批准、由《有色金属矿产与勘查》《岩土工程界》相继更名而来，是中国有色金属工业协会主管，有色金属矿产地质调查中心主办，中国有色金属工业协会地质矿产分会、中国有色金属学会地质学术委员会、中国地质学会矿山地质专业委员会联合协办的地学和矿业领域综合性技术类刊物。 |
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| 中文摘要: |
| 为研究露天煤矿中采空区对边坡稳定性的影响，以内蒙古地区某露天煤矿为研究对象，通过数值模拟分析研究了不同采空区工况下，开挖进行时边坡的位移变化情况。研究结果表明：采空区的位置和大小均对边坡稳定性有一定影响，距离边坡临空面越近影响越大，采空区跨度越大影响越大。采空区对边坡的影响具有一定范围，当距离边坡较远时产生影响较小。采空区影响时，边坡最大水平位移的中心始终位于边坡上部前缘，说明保护煤柱及上部煤层受采空区影响较小。在煤矿开采过程中应查明采空区分布，边坡应尽可能整体避开开采沉陷区，以确保安全。 |
| 英文摘要: |
| To investigate the impact of goaf on the slope stability in an open-pit coal mine in Inner Mongolia， numerical simulations were conducted to analyze the displacement variation of slopes during excavation under different goaf conditions. The results show that both the position and size of the goaf have a certain influence on the slope stability， with a greater impact observed when the goaf is closer to the slope toe and has a larger span. The influence of the goaf on the slope has a certain range， with smaller effects observed when the goaf is farther away from the slope. During the influence of the goaf， the center of maximum horizontal displacement of the slope consistently locates at the upper front edge of the slope， indicating that the protection of coal pillars and upper coal seams from the influence of the goaf is relatively minimal. It is recommended to determine the distribution of the goaf during the mining process， and slopes should be avoided from being directly affected by the mining subsidence area as much as possible to ensure safety. |
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