| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a demolition method by which demolition of concrete structure can be conducted in a shorter time than the method using only a heavy machine and which generates less noise and vibration as well as scatters less dust and debris than the method by explosion. <P>SOLUTION: Explosive devices are provided with the small amount of pellet-shaped molded explosive pellets 4 and an electronic device 2 capable of controlling detonation timing by unit of 1 ms. The explosive devices are loaded in bore holes formed in a concrete structure at appropriate intervals, and are detonated in short period delay by time differences of seconds to generate a crack in the concrete structure. Subsequently the concrete structure is broken by a heavy machine. <P>COPYRIGHT: (C)2012,JPO&INPIT |
