QIAN Yue-hong WANG De-rong LI Jie CHEN Wen-tao. Study of mechanism of rock mass deformation and failure ahead of working face on supporting zone[J]. 2011, 32(10).
QIAN Yue-hong WANG De-rong LI Jie CHEN Wen-tao. Study of mechanism of rock mass deformation and failure ahead of working face on supporting zone[J]. 2011, 32(10).DOI:
The shear slippage failure theory is used to study the stress-strain state in terrane ahead of working face; and then the main factors that cause volumetric deformation are analyzed. By means of the volumetric deformation state and its consequences
the mechanism of zonal disintegration phenomenon is explained and the occurrence conditions are derived. The results show that the main reason for volumetric deformation in supporting zone of deep rock mass is that the different pressure in prime stress space leads to the rock mass’s spalling
which explains the zonal disintegration; meanwhile
according to the characters of the shallow or deep rock engineering
the computation formula containing the column strength of rock mass is used to define the shallow or deep rock engineering. As to the thin rock terrane