Open AccessThe application of “line drilling” and “buffer holes” methods to reduce blasting vibration
Author(s) -
Dhion Pradatama,
Chani Pradasara,
Muhammad Syafiq Isnaya
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/882/1/012057
Subject(s) - rock blasting , drilling and blasting , explosive material , dynamite , drilling , engineering , geotechnical engineering , mechanical engineering , geography , archaeology
PT Multi Nitrotama Kimia is one of the largest mining service companies that provide blasting services and sales of explosives in Indonesia. PT Putra Perkasa Abadi Jobsite Borneo Indobara is one of PT Multi Nitrotama Kimia’s customers who is facing challenges in optimizing blasting activities. Currently, blasting activities at PT Putra Perkasa Abadi Jobsite Borneo Indobara are carried out within 500 m of the active slope, so that the blasting distance is optimized. In optimizing the blasting distance, it is necessary to maintain slope conditions (no underbreak / no overbreak) and to consider the vibration of blasting results on the slopes. The line drilling method was chosen for the blasting trial stage. In the observation activity, an analysis of the resulting blasting and fragmentation vibrations was carried out. Precise planning and good control in field operations play an important role in this experimental process. Based on the results of the blasting trial, no damage was found in the area 25 m – 100 m from the blasting location and a 10% - 20% reduction in blasting vibration results (Peak Vector Sum) was obtained when compared between normal blasting designs with controlled blasting designs.