黄金科学技术 ›› 2024, Vol. 32 ›› Issue (4): 640-653.doi: 10.11872/j.issn.1005-2518.2024.04.097
何祥锐1(),邱贤阳1(),史秀志1,李小元1,2,支伟2,刘军2,王远来2
Xiangrui HE1(),Xianyang QIU1(),Xiuzhi SHI1,Xiaoyuan LI1,2,Wei ZHI2,Jun LIU2,Yuanlai WANG2
摘要:
为了研究地下金属矿充填开采覆岩移动规律,以盘龙铅锌矿采场作为研究对象,建立非线性弹性地基梁力学模型,开展了不同采场结构参数、顶板厚度、原岩应力及充填体配比对于覆岩移动的影响研究。研究发现5个因素对于覆岩移动的影响从强到弱依次为充填体配比、采场结构参数、顶板厚度、原岩应力,提高充填体配比是控制覆岩位移的关键。通过采用Flac3D数值模拟方法计算不同充填体配比下覆岩移动值,将数值模拟分析结果与力学理论计算结果进行对比,二者差异率在3%~9%之间,从而验证了力学模型计算结果的可靠性。基于研究结果,提出地下矿山充填开采覆岩沉降控制技术,并将其应用于工业试验。研究成果可为类似矿山进行岩层控制提供借鉴。
中图分类号:
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