scholarly journals Rock Mass Classification Based on Convergence Measurement in Tunneling.

1992 ◽  
Vol 41 (463) ◽  
pp. 424-429 ◽  
Author(s):  
Chikaosa TANIMOTO ◽  
Hisaya YOSHIOKA
Keyword(s):  
Rock Mass ◽  
Rock Mass Classification ◽  
Mass Classification

Modified rock mass classification system by continuous rating

2003 ◽  
Vol 67 (3-4) ◽  
pp. 269-280 ◽  
Author(s):  
Zekai Şen ◽  
Bahaaeldin H. Sadagah
Keyword(s):  
Rock Mass ◽  
Classification System ◽  
Rock Mass Classification ◽  
Mass Classification

scholarly journals Joint Investigation and 3D Visual Evaluation of Rock Mass Quality

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Haiping Yuan ◽  
Chenghao Chen ◽  
Yixian Wang ◽  
Hanbing Bian ◽  
Yan Liu
Keyword(s):  
Rock Mass ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Three Dimensional ◽  
Rock Mass Classification ◽  
National Standard ◽  
Ratio Method ◽  
Rock Mass Quality ◽  
Close Range ◽  
Mass Classification

In order to realize the high efficiency quality classification and three-dimensional visualization of engineering rock mass and to solve the technical difficulties of the traditional rock mass quality evaluation method such as high labor intensity, long process time consumption, many intervention processes such as scale measurement and manual calculation, and nonintuitive classification results, this paper puts forward a 3D visual rock mass quality evaluation method and system based on close-range photography, which optimizes the traditional rock mass quality evaluation method, makes the rock mass classification three-dimensional and visible, and realizes the estimation of unrevealed rock mass quality evaluation index. The research results show the following: (1) The method of storing joint information by close-range photography and extracting joint information by human-computer interaction improves the working efficiency and the process is safe and controllable compared with the traditional method of collecting fracture parameters. (2) Based on the statistical analysis of 97 groups of roadway survey data, the comprehensive statistical regression formula between BQ value of Chinese national standard and RMR value is given, and there is a good correlation between BQ value and RMR value of rock mass quality index. (3) Based on the power-inverse ratio method, the three-dimensional model of rock mass classification of the mine was established, and the cutting model obtained the current distribution diagram of rock mass quality grade, providing scientific reference for drilling, blasting, support, and other production design optimizations.

Sign in / Sign up

Export Citation Format

Share Document