Abstract: In order to reduce the Hei daigou ditch open-pit coal mine rock loose blasting explosive unit consumption, improve the blasting quality, increase economic benefits open-pit coal mine, according to the actual circumstance of Hei daigou ditch open-pit coal mine blasting operation and development of blasting technology, make deep hole bench blasting used advanced technology has the possibility to fulfill the project. Hei daigou ditch open-pit coal mine by adjusting the hole density coefficient, reduce gun kong pays deep, instead of piecewise continuous charging structure charging structure, adjacent BaoQu obtuse Angle instead of rectangular cohesion and other technical measures, the blasting parameters to adjust. Through the test verifies the feasibility of the adjusted blasting parameters, and through the practice proves that the optimized blasting parameters make specific charge is reduced by 17.6%, average annual cost saving explosive the advantages of more than 1000 ten thousand yuan. Finally established suitable for deep hole loose blasting optimization parameters.