Earth excavation/Blasted rock/Precision vibration-controlled blasting

① The classification of work item names shall follow the MOLIT 'Road Construction Open Blasting Design and Construction Guidelines'. Vibration-controlled blasting Precision vibration control Non-vibration excavation General blasting Large-scale blasting Controlled blasting Small-scale Medium-scale Method overview A method that reduces vibration to a level that causes cracking in rock with a small amount of explosives around protected objects, followed by secondary breaking with a large breaker A method applied when protected objects exist within the blasting impact zone, where blasting design is carried out based on 'test blasting' results so that regulatory standards can be met A method in which the maximum charge per hole within the blasting impact zone can satisfy blasting vibration regulatory standards A method applied in mountainous remote areas, etc. within the blasting impact zone where no protected objects exist at all, considering only blasting efficiency A method in which secondary breaking is performed with a large breaker for zones separated from protected objects ② Includes drilling, charging and stemming fill, blast line installation, blast protection work, blasting, loosening of blasted rock, and stockpiling work. ③ Non-vibration excavation and precision vibration-controlled blasting include secondary breaking work with a large breaker (including secondary breaking). ④ Consumable material costs (bit, rod, shank rod, sleeve, chisel) are included. ⑤ Explosive material costs (explosives, detonator, stemming material) and loading and hauling costs for off-site disposal are excluded. ⑥ Surface trimming costs of the excavation face are excluded and shall be separately counted when necessary. ⑦ The volume conversion factor has already been reflected and applies to soil volume in the natural state.