Abstract: For quarrying and damming in the tailings reservoir area with complex environment，it is required that the construction speed is fast，the process is simple and easy to operate，the final slope is sta⁃ ble，the construction cost is low，the rock fragmentation after blasting is appropriate，and the blasting vi⁃ bration and flying objects do not harm the surrounding buildings. For different areas，different blasting technologies shall be adopted. The main mining area adopts deep hole bench millisecond blasting and hole by hole relay blasting. The delay blasting technology inside and outside the hole is adopted near the civil houses，the blasting vibration is controlled by the air interval charge，and the blasting hazard is controlled through safety accounting. So that the blasting excavation can be carried out safely and quickly. Compared with presplitting blasting technology，it has the characteristics of simple process，convenient implementa⁃ tion and high mining efficiency.

Key words: tailings pond, deep hole blasting, delayed initiation, interval charge