| 摘要 |
A reduction method of vibration in a blast spot is provided to block diffusion of vibration by buffering explosion power applied toward front ends of the blastholes using a clay layer when blasting the blastholes after charging an explosive into blastholes. A reduction method of vibration in a blast spot comprises: charging clay into front end portions of blastholes(10) and peripheral piles of the blastholes to form a clay layer(20); charging an explosive(30) to which a safety fuse is connected into an upper portion of the clay layer charged into the blastholes; stemming sand(40) above the explosive; and blasting the blastholes. The clay layer charged into the front end portions of the blastholes(10) and the peripheral piles of the blastholes is made from bentonite used in general public works. The clay layer is formed in a thickness that is the same as length of the explosive charged into the blastholes.
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