NUMERICAL MODEL TESTS FOR REINFORCING EFFECTS OF PATTERN BOLTS IN ROCK MASS SLOPES

By using the numerical model analysis software ADINA developed for large-scale geotechnical engineering problems,the improvements to the compression strength,elastic modulus c and values of the separate rock blocks after systematic bolts reinforcement are discussed,and the influence degree of systematic bolts on the rock mass of different strength is analysed.The anisotropy of the reinforced rock mass is also preliminarily studied,and it is found that bolts of vertical arrangement have major effect on the elastic modulus of the rock mass,but have minor effect on its compression strength.