The Spatial Block Stability Test in Variable Angles and Safety Evaluation

Joints information in specific rocky slope free face could be collected by modern untouched measure technology in engineering. Possible key blocks are displayed after system analysis. Experiment spatial blocks and structural planes dimensional angles can be changed with the variable angle space test platform, lead to reaching the target that position of spatial blocks are simulated, which suggests the secure stability of spatial blocks. Least square data fitting method is used according to experiment data-the two slide angles and failed mode. Security assessment is proposed and numerical method is applied to testify the experiment results.