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赣北九瑞-彭山地区构造运动机制及其控矿作用分析 被引量:17
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作者 刘南庆 尹祝 +3 位作者 施权 钱振义 万国庆 黄剑凤 《地质与勘探》 CAS CSCD 北大核心 2011年第3期333-343,共11页
赣北"九瑞"和彭山地区,因其独特的构造样式和矿床成因类型,很少有人将其合为一体系统分析。作者从研究该区最基础的沉积建造、构造特征和矿床形成的基本方式入手,结合边界深大断裂的活动特点及区域大地构造的演化规律,认为垂... 赣北"九瑞"和彭山地区,因其独特的构造样式和矿床成因类型,很少有人将其合为一体系统分析。作者从研究该区最基础的沉积建造、构造特征和矿床形成的基本方式入手,结合边界深大断裂的活动特点及区域大地构造的演化规律,认为垂直运动是导致两地构造与成矿明显不同的主要原因,亦是该区岩浆定位和矿床(体)形成的主要机制。区内"特定地层、构造、岩体综合控制型"和"岩体底辟侵位控制型"两种"矿床式"正是这种构造长期递进变形和变形分阶段演化的结果。 展开更多
关键词 构造运动机制 控矿作用 垂直运动 矿床式 九瑞-彭山地区 赣北
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Ground movement mechanism in tectonic stress metal mines with steep structure planes 被引量:4
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作者 夏开宗 陈从新 +2 位作者 刘秀敏 郑元 付华 《Journal of Central South University》 SCIE EI CAS CSCD 2017年第9期2092-2104,共13页
When mining metal mines with steep structure planes by the caving method,there is a mechanical model in which the horizontal stress on the rock mass is simplified as a column before surface subsidence.The model is use... When mining metal mines with steep structure planes by the caving method,there is a mechanical model in which the horizontal stress on the rock mass is simplified as a column before surface subsidence.The model is used to deduce critical support load and limiting column length for a given horizontal stress and support pressure.Considering the impact of the column effect,a method is proposed to determine the movement of the ground and caving area in a mine.After surface subsidence,the horizontal stress on a surrounding rock mass can be simplified to a cantilever beam mechanical model.Expressions for its bending fracture length are deduced,and a method is given to determine its stability.On this basis,an explanation for the large ground movement and subsidence scope was given.A case study shows that the damage effect of column and cantilever beam is significant for ground movement in metal-ore mine,and an appropriate correction value should be applied when designing for its angle of ground movements. 展开更多
关键词 mining engineering underground mining ground movement horizontal stress COLUMN cantilever pillar
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