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

土壤膨润土防渗墙：沟渠应力和邻近地面沉降

• 批准号: 9502448
• 负责人: George Filz
• 金额: $ 32.5万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9502448&HistoricalAwards=false
• 关键词: Soil; Bentonite; Cutoff; Walls; Trench

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. ***

9502448菲尔茨尽管土壤-膨润土防渗墙被广泛使用，但实际情况是，它们的设计和建造没有对沟槽回填和相邻地面之间相互作用的力学原理有基本的了解。 这样做的后果是，既不能准确预测回填土的水力传导性，也不能准确预测相邻地面的沉降。 本研究的主要目的是把这些墙的设计在一个良好的理论基础。 所采用的方法包括实验室测试、全尺寸防渗墙的仪器测量、分析工作和数值分析。 用于教育部分的方法包括：1）开发一个多媒体版本，以提高课堂效率，并为学生创造时间，使他们在学习新知识后立即练习新知识，并立即获得对其表现的反馈，2）将开发跨学科教育计划，涉及环境，水力系统和岩土工程小组，（3）大学生参与膨润土防渗墙的研究。 ***