采矿顶板最小安全厚度及地面沉陷变形研究  

Study of Minimum Safe Thickness and Ground Subsidence Deformation of the Stope Roof

作　　者：胡丰[1] 李云安[1] 刘海鳌[1] 邹济韬[1] 谭道远[1] 

机构地区：[1]中国地质大学工程学院

出　　处：《金属矿山》2013年第8期117-119,123,共4页Metal Mine

基　　金：国家重点基础研究发展计划(973计划)项目(编号:2011CB710602)

摘　　要：主要研究计算某矿山采场顶板保护层最小安全厚度和矿山开挖的地面沉陷变形量。具体的方法是按抗弯和抗剪2种结构力学模型分别推导出顶板最小厚度理论计算公式,进而计算出顶板最小安全厚度;利用Au-to CAD建立矿山开采区精细的工程地质三维模型,利用ANSYS有限元软件建立数值计算模型,再导入数值模拟软件FLAC3D中进行计算,以此来模拟矿山开挖的全过程。最后,模拟得到的地面沉陷变形量满足规范要求。It is mainly discussed that the minimum safe thickness of the stope roof and the ground subsidence deformation during mine excavation.The concrete method is deducing the theoretical calculation formula of minimum thickness of the stope roof according to the bending and shearing structural mechanics model respectively so as to gain the minimum safe thickness;A detailed engineering geological 3d model for mining concessions is built by using Auto CAD,and next a numerical calculation model is established by using ANSYS finite element software,following by importing it to numerical simulation software FLAC3D for calculation.By this method,the whole process of mine excavation can be simulated.Finally,the ground subsidence deformation obtained by simulation satisfies the specification requirements.

关 键 词：矿山开挖 数值模拟 顶板保护层厚度 稳定性 

分 类 号：TD326[矿业工程—矿井建设]