OPTIMAL GEOTECHNICAL PROPERTIES OF DEEP-SEA SEDIMENT FOR THE DESIGN OF MN-NODULE MINER IN THE C-C ZONE OF THE NORTHEAST EQUATORIAL PACIFIC

Title
OPTIMAL GEOTECHNICAL PROPERTIES OF DEEP-SEA SEDIMENT FOR THE DESIGN OF MN-NODULE MINER IN THE C-C ZONE OF THE NORTHEAST EQUATORIAL PACIFIC
Author(s)
지상범; 김기현; 형기성; 김종욱
KIOST Author(s)
Chi, Sang Bum(지상범)Hyeong, Ki Seong(형기성)Kim, Jong Uk(김종욱)
Publication Year
2006-10-23
Abstract
Deep-sea surface sediments were sampled from 1997 to 2002 in the Clarion-Clipperton fracture zone of the northeast equatorial Pacific. Samples were analyzed for geotechnical properties to provide background information for the design of manganese nodule miner. The sediments were classified in terms of the maneuverablility of the miner and potential environmental impacts arising from mining activities based on the measured properties (i.e. shear strength, index properties). The result shows that the middle part of the study area covered with coarse siliceous sediments is more favorable to the commercial mining than the northern part of the study area covered with pelagic red clay. Especially, area B2 in the middle part is considered to be the best mining site because this site shows the highest abundance of manganese nodules. Moreover, the sediments of this site consist of normally- to over-consolidated (types B, C, D) coarse siliceous sediments, which are appropriate for effective miner movement and less environmental impacts. Based on all data, suggested optimal shear-strength values, known as a practical guideline for movements of a manganese nodule miner, are 6.0 kPa at 10 cm and 7.0 kPa at 40 cm below the seabed at this site.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30851
Bibliographic Citation
Geological Society of America Abstracts (2006 Philadelphia Annual Meeting ), pp.228, 2006
Publisher
Geological Society of America
Type
Conference
Language
English
Publisher
Geological Society of America
Related Researcher
Research Interests

deep sea mineral resources,deep sea sediments,심해저 광물자원,심해저 퇴적물,심해 환경

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