Classification On The Stability Of Rock Around Deep Gateway Under Dynamic Pressure And Its Supporting Design In Pansan Mining Area

The paper, based on engineering background of Pansan mining area, Huainan, adopts theoretical analysis, numerical simulation and observation on the locale;According to observation on the locale, the paper analyses and researches deformation law of deep roadway under dynamic pressure;Through isotropic experiment of numeric simulation, relationship between deformation of rock around deep roadway under dynamic pressure and its influencing factors is educed;The paper analyses and establishes indices affecting the stability of rock around deep roadway under dynamic pressure, and based on it, goes on fuzzy classification on the stability of rock round deep roadway under dynamic pressure;Based on geologic conditions of concrete roadway, goes on fuzzy synthesized judgement, and educes global classification of concrete roadway;According to the position of weak structure around roadway, goes on subdivision on rock around roadway, and by means of numeric simulation, analyses destructive characteristic of roadway with different subdivision;Through analysis for mechanism of rock deformation and destroy around deep roadway under dynamic pressure, establishes controlling principles of rock around deep roadway under dynamic pressure;Based on analysis for mechanism of bolting with wire meshes and cables controlling rock around roadway, and classification on rock around specific roadway and controlling principles, goes on design of supporting parameters;Through numeric simulation, goes on check up supporting parameters of roadway designing;Utilizing observation on the locale,goes on monitoring and feedback of bolting with wire meshes and cables.