黄金科学技术 ›› 2022, Vol. 30 ›› Issue (3): 324-332.doi: 10.11872/j.issn.1005-2518.2022.03.105
周科平1(),曹立雄1,李杰林1(),张玮2,杨承业1,张孝平3,高乐1
Keping ZHOU1(),Lixiong CAO1,Jielin LI1(),Wei ZHANG2,Chengye YANG1,Xiaoping ZHANG3,Le GAO1
摘要:
采空区已成为影响矿山安全生产的重大隐患。为了准确分析复杂采空区群的稳定性,加强矿山对采空区群的安全管控,基于某矿山采空区群精细探测数据,采用Geomagic、Midas GTS与FLAC3D的耦合建模以及数值模拟分析方法,对复杂采空区群进行稳定性分析;同时,以采空区类型、岩石抗压强度和暴露面积等16项指标建立了复杂采空区群的安全分级评价体系,开展了复杂采空区群安全分级评价。结果表明:大矿体采空区上盘及东南方向顶板存在垮落隐患;五盘区采空区西北方向顶板“跳板状”围岩在残矿回采过程中将发生大幅形变;主采区各采空区相隔的间柱存在较大的应力集中现象。结合采空区安全分级评价结果,提出了各采空区的处理措施建议。研究结果为同类矿山的采空区稳定性分析和安全分级评价提供了借鉴。
中图分类号:
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