金川公司二矿区高应力条件下卸荷开采技术数值模拟分析研究  

Study and Analysis on Numerical Simulation of Unloading Mining Technology under High Stress in No.2 Mine Area of Jinchuan Mine

作　　者：朱远乐[1,2] 袁理[3] 王涛[4] 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012 [3]长沙理工大学水利学院,湖南长沙410114 [4]武汉大学水利水电学院,湖北武汉430072

出　　处：《矿业研究与开发》2013年第6期8-11,79,共5页Mining Research and Development

基　　金：湖南省重大科技专项(2011FJ1003)

摘　　要：在充分调研金川二矿区地应力场测量数据、深部岩体、二矿区采矿过程和工程建设与布置以及多年来国内外科研单位对金川二矿区深部矿体开采技术进行长期探索与研究所取得成果的基础上,采用三维非线性大变形有限差分法数值模拟软件(FLAC3D),对金川二矿区1#矿体及其中的7#盘区的开采进行了数值模拟,结合岩石力学方面的理论方法分析了矿体回采前后的应力场和位移场的分布规律,以及开采过程中区域内的岩体破坏情况及发展趋势,探索了矿体开采的合理布置方式,优化盘区内回采顺序,并综合评价了1#矿体及其中的7#盘区开采过程的稳定性问题。Many institutes at domestic and foreign have stud- ied on the mining technology of deep ore body in No.2 mine area of Jinchuan mine over the years. The measurement data of the stress field, deep rock, mining process, as well as en- gineering construction and arrangement of No.2 mine area in Jinchuan mine were fully investigated. Based on above, numerical simulation for 1 ^# ore body and 7 ^# panel in No.2 mine area of Jinchuan mine was carried out by FLAC3D software based on the three dimensional nonlinear large deformation finite difference method. Combined with theories of rock me- chanics, the distribution law of stress and displacement field before and after mining as well as the failure of rock mass and development trends in the mining area were analyzed. Moreover, the rational mining arrangement of the ore body was studied, the stoping sequence in panel was optimized and the stability of the 1^# ore body and 7^# panel in mining process were evaluated.

关 键 词：金川二矿 高应力 回采顺序 FLAC^3D 围岩稳定 

分 类 号：TD853[矿业工程—金属矿开采]