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

9602188本奖项提供资金，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，与韩国大学土木工程系Lee In-Mo博士敲定合作研究计划，以评估现实现场条件下颗粒输送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，以发展未来研究的实验基础；(2)观察过滤器的放置和整体施工程序，以帮助理解现场观察和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；以及(4)在向NSF和KOSEF提交正式提案之前，为拟议研究的建模和实验部分准备大纲，供隧道行业顾问和Kosef审查。许多土壤结构，包括地面和地下，都需要过滤器来防止侵蚀和管道。过滤器中的细小颗粒积累会导致孔压的积聚，这可能足以对堵塞的过滤器附近的挡土墙、大坝和隧道等结构造成损害。韩国首尔地铁系统的现场条件为测试PI目前正在开发的基本粒子传输模型提供了一个极好的机会。拟议的合作者在拟议的研究领域具有丰富的经验。该项目与美韩计划的目标相关，该计划旨在通过交流科学信息、想法、技能和技术以及通过在共同感兴趣和利益的问题上进行合作来提高美国和韩国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. ***