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程潮铁矿深部矿体联合开采地表沉降规律研究

Metal Mine(2016)

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Abstract
程潮铁矿选厂位于该铁矿深部矿体之上,采用2种采矿方法联合开采-430~-500 m阶段矿体时会引起选厂区域地表沉降.应用数值分析相关理论,建立采矿模型,采用FLAC3D有限差分法软件对开挖进行数值模拟,根据模拟结果分析地表沉降规律,从而预测是否要搬迁地表选厂,并根据不同情况提出相应的预防措施.结果反映地表选厂区域受地下开采沉降较大,影响选厂正常生产及选矿车间构建筑物的安全,且选场区域沉降与开采深部矿体间水平距离呈现一般规律,因此建议搬迁选厂.
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Key words
Numerical simulation,Finite difference method,Surface subsidence,Combined mining
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