Detection and analysis on induced cracking in rock mass based on digital panoramic borehole camera technology

摘要：

The present paper focuses on application of DPBCS (digital panoramic borehole camera system) in mining engineering.It is of very importance and significance to study the relationship between fracture development in rock mass and mechanism of induced caving technology.The system provides special method to calculate,account and analysis of the fracture parameters.The evolvement situation of discontinuities in rock mass under the artificial disturbance is reflected perspicuously by the video and images.Using the data acquisition obtained by computer system,the evolution laws and the quantitative relation of induce fracturing crack were studied according to statistics theory.Pre-splitting crack in borehole plays a key effect on failure of rock mass.Furthermore,fracture in pre-splitting boreholes under coupling effect by stopping disturbing and blasting was extremely well-developed.Steep obliquity,narrow width and short trace length are the main characteristic of fracture.Ultimately,interaction and coalescence of fractures after a period of time lead failure of rock mass.

关键词： continuous mining induced caving fracture Digital Panoramic Borehole Camera Technology virtual borehole pre-splitting hole

作者: Feng Gao Keping Zhou Jianhua Hu Hongwei Deng

作者单位: School of Resources and Safety Engineering,Central South University,Changsha 410083,China Hunan Key Lab of Mineral Resources Exploitation and Hazard Control for Deep Metal Mines,Changsha 410083,China

会议类型: 国际会议

会议名称: The 3rd International Conference on Environmental and Engineering Geophysics(第三届环境与工程地球物理国际会议)

会议地点: 武汉

会议语种:英文

页码: 634-637

在线出版日期: 2008-06-15（万方平台首次上网日期，不代表论文的发表时间）