A Planning Visit to Seoul, Korea, for Cooperative Research: Impact of Particle Transport in Soils on Filter Performance

9602188 Reddi该奖项提供资金，允许堪萨斯州立大学土木工程系Lakshmi N. Reddi博士对韩国进行短期访问，与高丽大学土木工程系In-Mo Lee博士确定合作研究计划，以评估在实际现场条件下颗粒输移对过滤器性能的影响。在为期一周的访问中，合作者希望(1)收集现场信息，为未来的研究奠定实验基础；(2)观察过滤器的放置和整体构建过程，以帮助理解现场观测与实验室结果之间的差异；(3)为拟议研究项目的建模部分制定假设。(4)在向NSF和KOSEF提交正式提案之前，准备拟议研究的建模和实验部分的大纲，供隧道行业顾问和KOSEF审查。许多土壤结构，包括地上和地下，都需要过滤器来防止侵蚀和管道。细颗粒在过滤器中的积聚会导致孔隙压力的增加，而孔隙压力大到足以对堵塞过滤器附近的挡土墙、水坝和隧道等结构造成破坏。韩国首尔地铁系统的现场条件为检验PI目前正在开发的基本粒子输运模型提供了绝佳的机会。提议的合作者在提议的研究领域有相当的经验。该项目与美韩计划的目标相关，该计划旨在通过科学信息、思想、技能和技术的交流以及在共同感兴趣和利益的问题上的合作，提高美韩科学家和工程师之间的合作水平。＊＊＊

9602188 Reddi This award provides funds to permit Dr. Lakshmi N. Reddi, Department of Civil Engineering, Kansas State University, to make a short-term visit to Korea to finalize plans with Dr. In-Mo Lee, Department of Civil Engineering, Korea University, for cooperative research to assess the impact of particle transport on filter performance under realistic in-situ conditions. During the one-week visit, the collaborators expect to (1) gather field information on which to develop the experimental basis of future research, (2) observe the placement of filters and overall construction procedures as an aid to understanding discrepancies between field observations and laboratory results, (3) formulate assumptions for the modeling component of the proposed research project, and (4) prepare an outline of the modeling and experimental components of the proposed research for review by tunneling industry consultants and by KOSEF prior to submission of a formal proposal to NSF and KOSEF. A number of soil structures, both above ground and subsurface, require filters for protection against erosion and piping. Fine particle accumulation in filters leads to buildup of pore pressure which can be large enough to cause damage to such structures as retaining walls, dams, and tunnels adjacent to the clogged filters. Field conditions in the subway system in Seoul, Korea, offer an excellent opportunity to test the fundamental particle transport models currently being developed by the PI. The proposed collaborators have considerable experience in the field of the proposed research. This project is relevant to the objectives of the U.S.-Korea Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual interest and benefit. ***