ANALISIS GETARAN TANAH AKIBAT PELEDAKAN UNTUK MENDAPATKAN ISIAN MAKSIMUM BAHAN PELEDAK DI AREA LOW WALL PIT TUTUPAN PT. PAMAPERSADA NUSANTARA ADARO-KALIMANTAN SELATAN

NOVRIADI, DIYAN (2012) ANALISIS GETARAN TANAH AKIBAT PELEDAKAN UNTUK MENDAPATKAN ISIAN MAKSIMUM BAHAN PELEDAK DI AREA LOW WALL PIT TUTUPAN PT. PAMAPERSADA NUSANTARA ADARO-KALIMANTAN SELATAN. Other thesis, UPN Veteran Yogyakarta.

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Abstract

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ABSTRACT
Removal overburden is one of loosening activities that happens at PT.
Pamapersada Nusantara jobsite Adaro environment. Loosening is started by using
drilling and blasting methods. The effect of blasting activities is ground vibration.
Blasting done in Low Wall pit Tutupan provides ground vibration which is risk
Maintank Fuel condition of PT. Sapta Indra Sejati if it is not controlled well.
Based on geotechnical analysis, PT. Adaro Indonesia as the owner,
establishes the safe limit of PPV is less than 5 mm/s. After measuring, there are
still some blasting ground vibrations that are beyond the limit.
The value of ground vibration is analyzed by using U. S. Bureau of Mines,
multiple linear regression and Bertha methods. From the three methods above, by
using U. S. Bureau of Mines method we can get the smallest value of average
error relative of ground vibration. The average-error relative is 23,12%. Based on
analysis using U. S. Bureau of Mines method is got equation: PPV=2892xDS-1,59
.
Afterwards, that formula is used to predict ground vibration and maximum charge
explosive. The safe distance blasting in stiffness ratio 0,86 is 380 m, with
maximum charge weight per delay is 41,65 kg. And the safe distance blasting in
stiffness ratio 1,14 is 600 m, with maximum charge weight per delay is 66,12 kg.
The highly influential factors of ground vibration are distance, charge
weight explosive per delay and stiffness ratio. Besides that, free face availability
also influences ground vibration. Control blasting is used to decrease ground
vibration with using linedrilling and presplitting techniques.

Item Type:	Thesis (Other)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Eko Yuli
Date Deposited:	16 Jan 2025 07:52
Last Modified:	16 Jan 2025 07:52
URI:	http://eprints.upnyk.ac.id/id/eprint/42069

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