PROBLEM TO BE SOLVED: To provide a blasting method capable of reducing noise associated with blasting at a predetermined position around a blasting site in accordance with a state of the object rock ground to be blasted.SOLUTION: A blasting method executes: a first blasting process to measure a sound pressure level in a low-frequency area at a predetermined location when executing delay blasting in a first blasting object region with first initiation interval on a second time scale; a second blasting process to measure the sound pressure level in the low-frequency area at the predetermined location when executing the delay blasting in a second blasting object region connected to the first blasting object region with second initiation interval on the second time scale different from the first initiation interval on the second time scale. The sound pressure level measured in the first blasting process is compared with the same measured in the second blasting process. The delay blasting in a third blasting object region connected to the second blasting object region executes with the first initiation interval on the second time scale when the sound pressure level measured in the first blasting process is smaller than the same measured in the second blasting process or executes with the second initiation interval on the second time scale when the sound pressure level measured in the first blasting process is larger than the same measured in the second blasting process.SELECTED DRAWING: Figure 4
