Refined Design and Optimization of Underground Medium and Long Hole Blasting Parameters—A Case Study of the Gaofeng Mine

Previously conducted studies have established that the rationality of parameters medium-deep hole blasting is one main factors affecting effect. To solve problem parameter design and optimization in underground mines, a method based on crater tests numerical simulation analyses has been proposed this study. Based background deep mining Gaofeng Mine, two-hole model established, are simulated analyzed by damage stress variation model. During study, initial values were first obtained from field test, then optimized LS-DYNA software, finally, scheme was demonstrated corresponding test. The results test showed integrated blast analysis can effectively optimize improve effect to large extent. This study also provides an effective system for similar mines.