YAO Nan, YE Yi-cheng, WANG Qi-hu, et al. Study on influence of stability of gently inclined stope roof based on dimensional analysis[J]. 2018, 39(11): 4232-4241.
YAO Nan, YE Yi-cheng, WANG Qi-hu, et al. Study on influence of stability of gently inclined stope roof based on dimensional analysis[J]. 2018, 39(11): 4232-4241.DOI: 10.16285/j.rsm.2017.0658.
To deal with the difficulty of quantifying the complex influence relations between multiple influencing factors of the stability of stope roof in the gently inclined thin to mid-thick deposit
Shanghengshan Mine is selected as a case study. Firstly
the influencing factors of stope roof’s maximum tensile stress ( ) and maximum settlement ( ) were determined through the numerical results of the single factor test program
and their impact features were analyzed. Secondly
according to the physical meaning analysis of the influencing factors
the dimensional model and dimensional model were defined
respectively. Based on these models
the numerical simulation uniform test of influencing factors of stope roof’s stability was designed
and the dimensionless equations of stope roof’s and were deduced through experimental results. Finally
the dimensionless equation of stope roof’s was verified through the comparisons with the measured settlement from several gently inclined mines. The verified results show that the predictions results from the dimensionless equation are basically consistent with measured results with an average error of about 9.68%
which shows good prediction effectiveness. This study can provide a reference for the selection of mining parameters and the management of stope roof of gently inclined mines.