A study on particle crushing of rock-fill dam materials |
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학술지명 한국지반공학회
저자 김태훈,임은상
발표일 2009-12-01
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Earth and rock fill dam is our typical dam because of their inherent flexibility and adaptability to various foundation conditions. In order to secure structural safety, rock-fill materials are used angular particles obtained by blasting parent rock or rounded particles collected from river beds. Concrete-faces rock-fill dams (CFRD) and Concrete-faces gravel-fill dams (CFGD) have become popular in the last 20 years as a result of their good performance and low cost compared with the rock-fill dam. These Dams are also constructed by rubbles or gravels. A key factor in the design of the dams is the deformations induced during construction and upon reservoir filling. These can be predicted using the adequately defined stress-strain and strength properties. However, the stress-strain properties of rockfill are difficult to determine because the properties are affected by some factors such as particle grading, size and shape of particles, stress conditions, and particle crushing. In this study, testing of the behavior of the rock-fill materials are essential prerequisites to the realistic analysis and design of the CFGD. |