基于有限元分析的复杂采空区群危险度分级  

Dangerous degree estimation of complicated goaf group with FEM simulation

作　　者：杨彪[1] 罗周全[1] 刘晓明[1] 陆广[1] 鹿浩[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿业工程研究》2010年第1期4-8,共5页Mineral Engineering Research

基　　金："十一五"国家科技支撑计划资助项目(2007BAK22B04-12;2006BAB02B04-1-3-1);中南大学研究生学位论文创新资助项目(1343-74334000026)

摘　　要：针对某矿山大型复杂采空区群的实际情况,应用空区三维激光探测技术获得了复杂空区的真实形态及相对位置关系,结合SURPAC软件构建了包含复杂空区群在内的矿山三维地学模型,将地学模型分别转换导入FLAC3D和Phase2有限元软件形成数值计算模型,经计算获得围岩变形和应力分布状况.通过对数值计算结果分析并参考空区形态、体积及周边环境等因素,确定了采空区的危险度等级.运用空区实测模型进行数值模拟提高了计算结果的可靠度,同时运用不同计算软件,降低了计算误差,所得结果更为可靠,更有利于指导生产实际.For the complex and large mined-out area group in a mine, this paper uses the cavity monitoring system to get mined-out area group real shape and relative positions and unit with large mine soft Surpcac to build a 3D geological model including mined-out area group. Then it builds a numerical calculation model by introducing the geological model to FLAC^3D and Phase2, and gets distortion of rock and distribution of stress by calculation. It defines the danger degree of cavity through analyzing the result of numerical calculation and referring to the shape, volume and around environment of the cavity. Reliability can be improved through applying measured model of cavity during numerical stimulation, Calculation mistake is also lowered by using different calculation software, and is helpful to production.

关 键 词：采空区群 SURPAC 三维地学模型 有限元 危险度 

分 类 号：TD325[矿业工程—矿井建设]