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GEOTECHNICS FOR FOUNDATION PLANNING IN JETTY
AND CONVEYOR BELT CONSTRUCTION
A Case Study from Loa Duri, East Kalimantan, Indonesia
Ilham P. Budhi1, Raden I. Sophian1, Febri Hirnawan1, and Geni Firuliadhim2
1
2
Faculty of Geology, Universitas Padjadjaran, 45363, Jatinangor, Indonesia
Faculty of Civil Engineering, Politeknik Negeri Bandung, Bandung, Indonesia
Email: [email protected]
Abstract
The Mahakam River in Borneo Island, has long been used by the surrounding coal mining company to
send their mining product by using barges. Conveyor belt used to deliver the mining products from
stock pile to barges, and jetty serves as a haven for the barge.The geotechnical investigation is
needed to ensure the jetty and conveyor belt placed on the appropriate type of foundation.The study
begins with geotechnical mapping, followed by geotechnical drilling, SPT, and DCPT. The samples
form geotechnical drilling tested in the laboratory, producing soil and rock mechanics data. The data
from SPT, DCPT, are used as the foundation calculation analysis.The results showed that thr areas of
research compiled by well graded sands (SW) and poorly graded sands (SP).The footing foundations
choosed at point S01, S02, S03, and S04, with allowable bearing capacity 0.51 - 3.73 kg /cm2, at
point S05 and S06, the pile foundation choosed, with allowable bearing capacity 19,733 - 36,436
tons. The preboring pile foundations choosed at point BH01, BH02, BH05, and BH 09 with allowable
bearing capacity 15.7 - 75.7 tons, at point BH04, BH06, BH07, BH08 pile foundations are used, with
allowable bearing capacity 9.7 - 105.6 tons.
Keywords : . Loa Duri, geotechnical mapping, geotechnical drilling, foundation
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