关键词: 缓倾斜, 顶板稳定性, 拉应力, 沉降, 量纲分析

Abstract: 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.

Key words: gently inclined, stability of stope roof, tensile stress, settlement, dimensional analysis