会泽铅锌矿深部地应力分布规律的研究  

Study on the Distribution Rule of Deep In-situ Stress in Huize Pb-Zn Mine

作　　者：唐华瑞[1] 郭闪闪[1] 韩灵杰[2] 文磊[3] 严庆文 

机构地区：[1]河南理工大学万方科技学院,河南郑州451400 [2]郑州科技学院,河南郑州450064 [3]中南大学资源与安全工程学院,湖南长沙410083 [4]云南驰宏锌锗股份有限公司,云南曲靖市654200

出　　处：《矿业研究与开发》2016年第3期45-48,共4页Mining Research and Development

摘　　要：为了解云南会泽铅锌矿深部地应力的分布规律,在该矿区两个不同标高的中段布置6个测点进行了地应力测试。运用有限差分法软件FLAC3D进行数值模拟。结果表明:该矿区的地应力以水平构造应力为主导,最大主应力与水平夹角介于8.87°~28.70°之间,深部地应力方向大致呈NNW^NNE向;矿区原岩水平应力和垂直应力以及最大主应力均随着深度的增加而增大,弹性模量随深度增加减小;矿区的水平最大主应力与垂直应力之比(侧压系数)在0.652~2.974之间,最大水平主应力是最小水平主应力的1.402~6.898倍。矿区的地应力分布受到断层的影响,导致断层附近的应力明显下降。In order to investigate the distribution rule of deep in-situ stress in Huize Pb-Zn Mine,six points for in-situ stress measurement were positioned on two levels of different altitudes.Then numerical simulation was conducted by FLAC3 D.The results were obtained as fallows.Firstly,the in-situ stress was dominated by horizontal tectonic stress in the mine area,the angle between the maximum principal stress and the horizontal plane was among 8.88°～ 28.70°,and the direction of deep in-situ stress was roughly from NNW to NNE.Secondly,the initial horizontal stress,the initial vertical stress and the maximum principal stress were increased with the enlargement of depth,but the elastic modulus was opposite.Thirdly,the side pressure coefficient,namely the ratio of the maximum principal stress and vertical stress,was among 0.652 and 2.974,and the maximum horizontal principal stress was 1.402 ～ 6.898 times of the minimum horizontal principal stress.Furthermore,the distribution of in-situ stress was affected by the fault,leading to the obvious decrease of sress nearby the fault.

关 键 词：深井地应力 地应力测量 分布规律 FLAC3D数值模拟 会泽铅锌矿 

分 类 号：TD321[矿业工程—矿井建设]