The center cut construction method which uses the percentage rock device and the said device

摘要

Abstract Topic From base rock surface in specified hole formation direction hole formaVis-a-vis the base rock which is formed, from the inner wall surface of that hole on the base rock surfaceDirecting, giving crack, the base rock the small size which the percentage rock can doThe center cut process which uses the percentage rock device, and the said device is offeredru. Solutions This connection region 512 of each operational piece 51 pulling removal oneWith the direction which forms direction (X) and acute angle, at the same time on base rock surface RS directionThe ke te by making move on the inner wall surface 11 of the hole 1 pressureIt gives, forms crack CR in base rock R. In addition, crackAlthough operational piece 51 is made to move for forming, hitting, eachMovement of operational piece 51 with 2nd key component 6 and 1st key component 3 systemBecause it has managed, at the inner wall surface 11 vicinity of the hole 1 operational piece 5Special configuration in order to control the moving trucking of 1 necessity and the seMiniaturization of the zu and the device makes possible.