露采平台安全厚度与隐伏采空区跨度关系的数值模拟研究  

Numerical analysis on the relationship between safe thickness of surface mine bench and hidden goaf span

作　　者：康伟权 袁海平[1,2] 吴贤振[1] 刘建伟[1] 尹丽冰 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《有色金属科学与工程》2014年第1期86-90,共5页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51004007);江西省自然科学基金资助项目(20114BAB216026);江西理工大学研究生创新专项资金项目(YC2012-X05)

摘　　要：准确掌握露采平台安全及下部隐伏采空区的稳定性,是矿山进行安全生产工作的重要前提.为了确定某矿露采平台下部隐伏采空区跨度与露采平台安全厚度之间的关系,通过室内岩石力学实验,获取岩样相应的物理力学参数;结合摩尔-库仑强度破坏准则,应用FLAC3D数值计算软件,建立三维模型;在一定的空区走向长度(30 m)和不同的跨度条件下,以每次10 m的工程进度向地表方向模拟开挖,分析空区顶板临界安全厚度与空区跨度和岩体抗拉强度的相互关系.给出了露采平台安全厚度与空区跨度关系和抗拉强度三者的线性拟合公式,为类似矿山的采矿工作提供借鉴.Accurate understanding of the open-pit important prerequisite for mining safety. A series mining bench security and mined-out area stability is an of rock mechanics experiments were conducted to obtain the basic physic mechanical parameters of ore rock samples and analyze the relationship between safe thickness of open-pit mining based on the con pl di 10 meters every atform and hidden goaf span. A three-dimensional simulation model was built up by FLAC3D tions of goaf area span under the specified length of 30 meters of goaf area with the progress time to excavate up the worked out section. A linear fitting formula was put forward.

关 键 词：隐伏采空区 平台安全厚度 FLAC3D 露天开采 

分 类 号：TD325[矿业工程—矿井建设]