Layouts of measuring point and baseline of the surrounding rock convergence observation in complicated rock mass structure

摘要：

The conventional layouts of measuring point and baseline of the surrounding rock convergence observation in complicated rock mass may not be very rational by reason that the monitoring data from unapparent sites will not indicate the real deformation rules.A case study on a gypsum mine with low-angle and thin layers is conducted.The typical failure pattern of surrounding rock mass structure is analyzed according to the investigation into the stope collapse scene,then the main tasks of convergence observation are determined to understand the bending and separation rules of roof and floor and shear slipping rule of pillar.Discrete element method (DEM) is applied to choose the key sites with notable displacement feature as best ones of convergence point,which can reflect the initial failure zone of surrounding rock.Based on the deformation rule of selected points,the layout of baseline is further optimized and the displacement formula is also presented.

关键词： Complicated rock mass structure Convergence observation Optimum layout

作者: Chen Qingfa Wu Zhongxiong

作者单位: School of resources and safety engineering,Central South University,Changsha 410083 China;College of College of resources and environment,Guangxi University,Nanning 530004,China

会议类型: 国际会议

会议名称: The 2007 International Conference on Mine Hazards Prevention and Control(2007矿山灾害预防与控制国际学术会议)

会议地点: 青岛

会议语种:英文

页码: 683-687

在线出版日期: 2007-10-17（万方平台首次上网日期，不代表论文的发表时间）