隧道掌子面节理信息快速数字识别及稳定性分析  

Fast digital identification of joint information of tunnel work face and its stability analysis

作　　者：王洋[1,2] 王述红[1,3] 郭牡丹[1,3] 董智慧[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]辽宁省交通规划设计院,辽宁沈阳110016 [3]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008

出　　处：《岩土工程学报》2011年第11期1734-1739,共6页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(51074042);国家973基础研究计划项目(2007CB209405);辽宁省自然科学基金项目(20092011);中央高校基本科研业务专项资金(N090401008;N090101001);深部岩土力学与地下工程国家重点实验室开放课题(SKLGDUEK1009)

摘　　要：岩体隧道开挖过程中所获得的节理相关信息的迅速程度、准确程度将直接影响到工程的安全性。借助于三维岩体不接触测量技术,快速获取一系列真实描述岩体宏观结构的数字图像,提取节理几何形态空间分布信息,在此基础上利用自行开发研制的岩体模型空间分析系统GeoSMA-3D,快速识别关键块体;并运用三维离散元程序3DEC及其内嵌FISH语言建立模型,将两者的优势结合起来。研究工作面推进过程中岩体的运动形式和垮落形态,记录并且分析开挖推进过程岩体变形塌落全过程,最后尝试将数值计算结果来反馈分析指导施工。During the excavation of rock tunnels,the acquisition velocity and accuracy of joint information will affect the safety of the project directly.The three-dimensional noncontact measurement software 3GSM is employed to obtain digital images which characterize the macrostructure of rock mass in short time,then the information of spatial distribution geometric shape of joints is extracted.The rock mass 3D analysis system GeoSMA-3D is adopted to identify the key block of surrounding rock.At the same time a model is developed by using the discrete element method program-3DEC and the FISH language which is embedded in 3DEC.The motion and falling modes of the rock during the excavation are studied.The whole process of motion and deformation of the rock mass is recorded and analyzed.Finally,the numerical results are employed to guide the project construction.

关 键 词：不接触摄影测量 节理数字识别 稳定性分析 

分 类 号：TU560[建筑科学—建筑技术科学]