Study Of The Stability Of Surounding Rock Deep Roadway

The rock body in deep lies an environment of high ground pressure, high temperature , high pore pressure, This causes the change in mechanics structure , basic behavior characteristic and response to project of deep rock , and also the appearance of calamity when mining in deep. The rock body is influenced by many field and heterogeneous coupling, groundwater, gas, temperature can bring heavy influence to respond to project and fundamental characteristic.This paper analyses mechanics characteristic and the deforming characteristic of surrounding rock of deep roadway. According to the stress state of the surrounding rock, adopting related theory, analyses the stress of surrounding rock in the state of elasticity-plasticity and elasticity-viscoplasticity. At the same time, using the elastic theory to analyses the surrounding rock stress of round roadway in hot stress field . Indicate: the change of temperature and pore press will produce certain influence to the stability of roadway, especially to weak rock.Combining theory analysis, the paper analyses the stress and deforming characteristic of surrounding rock in different stress field with numerical simulation software FLAC^3D, finds out the key position of the deformation of surrounding rock in different stress field, According to the different situation, and puts forward the reasonable suggestion in term of layout and propping of roadway, it has certain significance to the stability control of deep roadway.