李广贺;王东;曹兰柱;杨国华;魏宁;

• 1:辽宁工程技术大学矿业学院
• 2:内蒙古霍林河露天煤业股份有限公司北露天煤矿

摘要(Abstract)：

针对露天煤矿顺倾软岩到界边坡空间形态优化问题，以霍林河北露天煤矿三采区为工程背景，基于极限平衡理论与数值模拟相结合的方法，分析了纵采与横采开采方式下边坡二维与三维稳定性，优化设计了顺倾软岩到界边坡空间形态。结果表明：顺倾软岩边坡二维稳定性与平盘宽度近似呈正相关一次函数关系，与岩柱宽度近似呈正相关指数函数关系；当追踪距离小于100 m时，开挖位置、开挖角度对顺倾软岩边坡三维稳定性影响较小，当追踪距离大于100 m时，边坡三维稳定性系数与开挖角度呈正相关一次函数关系；当追踪距离大于200 m、岩柱宽度小于60 m时，边坡三维稳定性系数随追踪距离增大呈线性减小趋势；霍林河北露天煤矿三采区到界边坡最优空间形态为追踪距离50 m、沿底鼓区坡顶线以39°边坡角横采降深至24煤底板。

关键词(KeyWords)： 安全工程;露天煤矿;顺倾软岩;到界边坡;空间形态;稳定性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51874160);; 辽宁工程技术大学学科创新团队项目(LNTU20TD-01)

作者(Authors): 李广贺;王东;曹兰柱;杨国华;魏宁;

DOI: 10.13637/j.issn.1009-6094.2021.0241

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