Browse > Article

Settling Mode of the Dredged Soil  

윤상묵 (㈜쏘일테크엔지니어링)
장병욱 (서울대학교 농공학과)
차경섭 (서울대학교 대학원)
Publication Information
Magazine of the Korean Society of Agricultural Engineers / v.45, no.1, 2003 , pp. 63-73 More about this Journal
Abstract
The settling of the dredged soil may vary with mineral composition, grain size distribution, initial water content and salt concentration of suspension of the site. A series of settling column test was performed to investigate the behaviour of solid suspension material from dredging and reclamation. Settling mode was divided into four types from the observation of interface and settling curves of clay minerals and marine clay samples, and the relationship charts of salt concentration and the initial water content were established to use in the dredging operation with any salt concentration. The critical initial water content which was defined as a threshold of zone settling and the consolidation settling was varied with salt concentration of water and was proportional to the plasticity of soil in sea water.
Keywords
Settling mode; Dredged soil; Salt concentration; Critical initial water content;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Fujii. K. Ohtsuka, K. and Takahashi, Y., 1987, Settling Characteristics of Clay Particles in a Bentonite suspension, Trans. of JSIDRE, No.132, pp.43-49. (in Japanese)
2 Ikegami, S.. Yoshikuni, H., Moriwaki, T., Minamoto, A., and Arimoto, K, 1994, The Influence of Salinity on the Precipitation and Self-weight Consolidation Characteristics of Very Soft Clay, The 29th Japan National Conference on Soil Mechanics and Foundation Engineering. pp.233 -234. (in Japanese)
3 Yun, S.M., 2002, Settling mode and segregating sedimentation of the dredged soil, Ph.D. thesis, Seoul Natl. Univ. korea (in Korean)
4 Imai, G., 1980, Settling Behavior of Clay Suspension, Soils and Foundations. JSSMFE, Vol. 20. No.2, pp. 61-77
5 McRoberts, E.C., and Nixon, J.F., 1976, A Theory of Soil Sedimentation, Canadian Geotechnical Journal, Vol. 13, pp. 294-310
6 Kynch, G.J., 1952, A Theory of Sedimentation, Transaction Faraday Society, Vol. 48, pp. 166-176
7 Park, J. H., Seguchi, M., and Kato, O. 1994, Interfacial Settling Properties of Fluid Muds in Quiescent Sea Water, Trans. of JSIDRE, No.172, pp.113-121. (in Japanese)
8 Kondo, F.. Kunitake, M.. Takayama. M.. and Nogi, Y., 1996b, Settling Patterns and Settling Rates of Kaolinite, Montmorillonite and Illite - Effects of initial water content and salt concentration on the settling characteristics-. Trans. of JSIDRE. No.185. pp.73-80. (in Japanese)
9 Imai, G., Tsuruya, K. and Yano, K, 1979. A Treatment of Salinity in Water content Determination of Very Soft Clay. Soil & Foundation, Vol. 19. No.3. pp. 84-99   DOI
10 Yoshikuni, H.. Moriwaki, T., Ikegami, S., Minamoto, A., and Arimoto, K, 1993, The Influence of Salinity on Mechanical Behaviour of Clays, The 28th Japan National Conference on Soil Mechanics and Foundation Engineering, pp.359 - 360. (in Japanese)
11 Fujiwara, T.. Suzuki, A., and Kitazono, Y, 1994, The Effect of Initial Water Content on Sedimentation of Cohesive Soils, The 29th Japan National Conference on Soil Mechanics and Foundation Engineering, pp.231-232. (in Japanese)
12 Kondo, F.. Takayama. M., Ohtsubo, M.. Higashi, T.. and Kunitake, M.. 1996a, Settling Patterns of Ariake Clay and Factors Affecting the Settling Rate, Trans. of JSIDRE. No.182, pp.49-56. (in Japanese)
13 Imai, G., 1981, Experimental Studies on Sedimentation Mechanism and Sediment Formation of Clay Materials, Soils and Foundations, Vol.21. No.1, pp. 17-20