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http://dx.doi.org/10.12654/JCS.2012.28.1.039

Deterioration Evaluation and Material Characteristics of the Usuki Stone Buddha Statues in Oita, Japan  

Cho, Ji-Hyun (Department of Cultural Heritage Conservation Sciences, Kongju National University)
Lee, Chan-Hee (Department of Cultural Heritage Conservation Sciences, Kongju National University)
Kim, Ji-Young (Department of Cultural Heritage Conservation Sciences, Kongju National University)
Morii, Masayuki (Center for Conservation Science and Restoration Techniques, National Research Institute of Cultural Properties)
Lee, Myeong-Seong (Conservation Science Division, National Research Institute of Cultural Heritage)
Kim, Sa-Dug (Conservation Science Center, National Research Institute of Cultural Heritage)
Publication Information
Journal of Conservation Science / v.28, no.1, 2012 , pp. 39-52 More about this Journal
Abstract
The Usuki Stone Buddha Statues in Oita are consisted of 60 Buddhas which represent of Japan carved on the rock-cliff in the 12 to 14th centuries. The basement rock of the statues is dark gray welded lapilli tuff that containing the Aso-4 pyroclastic rock group. Deterioration maps for the Hoki I and the Furuzono Buddha Statues group show multi-directional fissures on the Cakra, and sheeting-off zone at the margin of uprising water. Deterioration rate of the Hoki I group was calculated fissure about 121 in number, 19% of sheeting-off zone and 51% of biological weathering in surface of area. And the Furuzono group was also evaluated as about 48 of fissures in number, 24% of sheeting-off zone and 41% biological weathering. The slope stability assessment results, the Hoki I developed discontinuous planes has possibility of planar, toppling and wedge failures in all caves. Ultrasonic velocity of the Aizen-myooh (basement rock) ranges from 1,520 to 2,794 (average 2,298m/s). And pedestal of Amita-yeorae which has been replaced by new fresh rock is measured as 3,242 to 4,141 (average 3,813m/s). Therefore, we establish of planing conservation treatment and reinforcement methods to fissure, cavity, sheeting-off zone in the Buddha surface.
Keywords
Usuki Stone Buddha Statues; Tuff; Salt weathering; Slope stabilization; Ultrasonic velocity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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