Hydraulic Conductivity Measurement in Unsaturated Soils With a Modified Cone Penetrometer

9501772 Gribb在本科和研究生阶段的土力学和地下水流动课程中，很少包括对非饱和土性质的深入讨论。如果不了解非饱和土的流体输送、强度和体积变化行为，工程师就无法有效地设计膨胀土的基础，预测残余土的边坡稳定性，或表征渗透带中污染物的流动。历史上，与非饱和流动方程相关的复杂性使得解析解变得困难，并且局限于相对简单的问题。新的计算方法、强大的个人计算机和改进的土壤仪器使研究更大范围的问题成为可能，无论是数值上还是实验上。该项目的两个总体目标是：1)增加非饱和流动行为的知识基础；2)将非饱和土力学和非饱和流动的主题纳入南卡罗来纳大学土木工程课程，以更好地满足专业和社会不断变化的需求。＊＊＊

9501772 Gribb Soil mechanics and groundwater flow courses at the undergraduate level, and often at the graduate level, rarely include in-depth discussion of the properties of unsaturated soils. Without an understanding of fluid transport and strength and volume change behavior of unsaturated soils, engineers are not well equipped to effectively design foundations for expansive soils, predict slope stability of residual soils, or characterize the flow of contaminants in the vadose zone. Historically, complexities associated with unsaturated flow equations have made analytical solutions difficult and limited to relatively simple problems. New computational methods, powerful personal computers, and improved soil instrumentation have made it possible to investigate a larger scope of problems, both numerically and experimentally. The two overall goals of this project are: 1) to increase the knowledge base of unsaturated flow behavior and 2) to incorporate the topics of unsaturated soil mechanics and unsaturated flow into the civil engineering curriculum at the University of South Carolina to better meet changing needs of the profession and society. ***