Artificial freedom myeongong and special blasting method using an artificial free surface band

摘要

invention rock blasting operations in the event that blasting noise vibration caused by blasting method to minimize that on that cancer crushed rock crushing process is the use of artificial freedom as the basic features that myeongong (1) and artificial free surface zone (KZ) to facilitate a small amount of explosives . ; if an artifact free myeongong freedom to act 1 and the artificial free face perforated band (KZ) to a predetermined direction , and a rear arrangement ( Figure 1) or before , the back ( Fig. 2) or radiation pattern (FIG. 3) to the blaster (2) punctures the blaster (2 ) small amounts of explosives ( division 4) at regular intervals (Fig. 3) placed on the cake is to break through the rock with minimal noise, vibration caused by the explosion .