Soil-Bentonite Cutoff Walls: Trench Stresses and Adjacent Ground Settlement

9502448菲尔兹尽管土壤-膨润土防渗墙被广泛使用，但实践中的情况是，它们在设计和建造时对沟渠回填土与邻近地面之间的相互作用机理没有基本的了解。这样做的后果是，既不能准确预测回填土的渗透系数，也不能准确预测相邻地基的沉降。这项研究的主要目标是将这些墙的设计建立在坚实的理论基础上。将采用的方法包括实验室测试、全尺寸防渗墙的仪器、分析工作和数值分析。教育部分使用的方法包括：1)开发多媒体版本，以提高课堂效率，并为学生创造时间，让他们在学习新知识后尽快练习，并立即获得对他们表现的反馈；2)开发跨学科的教育计划，让环境、水利系统和岩土工程小组参与；3)本科生将参与土壤-膨润土防渗墙研究。***

9502448 Filz Even though soil-bentonite cutoff walls are widely used, the state of practice is that they are designed and built without a fundamental understanding of the mechanics of the interaction between the trench backfill and the adjacent ground. The consequences of this are that neither the hydraulic conductivity of the backfill nor the settlement of the adjacent ground can be accurately predicted. The principal objective of this research is to put design of these walls on a sound theoretical basis. The methods to be employed include laboratory testing, instrumentation of a full-scale cutoff wall, analytical work, and numerical analyses. Methods used for the educational component include: 1) a version of multimedia developed to improve classroom efficiency and to create time for students to exercise new knowledge as soon as they learn it and get immediate feedback on their performance, 2) and interdisciplinary educational program will be developed that will involve the environmental, hydrosystems, and geotechnical engineering groups, and 3) undergraduates will participate in the soil-bentonite cutoff wall research. ***