Dessication Cracking of Clay Liners

粘土衬垫的干燥开裂

• 批准号: 8708180
• 负责人: Carol Miller
• 金额: $ 4.5万
• 依托单位: Wayne State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8708180&HistoricalAwards=false
• 关键词: Dessication; Cracking; Clay; Liners

The objective of this project is to explore the problem of dessication cracking of clay liners used to cap hazardous waste landfills. The project will quantify the soil stresses which accompany cracking, the resulting crack geometry and its time variation, and the mechanics of flow through the cracked soil. The findings will be incorporated in an existing numerical model of flow through clay liners. The developments from this project are expected to significantly expand previous research in the flow through clay liners, and provide a base for even more sophisticated studies of the problem. The research is expected to impact landfill designers, regulatory agencies, contaminant transport modeling, and others involved in infiltration/percolation studies or the design of containment systems.

本项目的目的是探索用于危险废物填埋场封顶的粘土衬垫的干燥开裂问题。该项目将量化伴随破裂的土壤应力，由此产生的裂缝几何形状及其时间变化，以及流经破裂土壤的力学。这些发现将被纳入现有的粘土衬里流动的数值模型中。该项目的进展预计将大大扩展之前对粘土衬里流动的研究，并为更复杂的问题研究提供基础。这项研究预计将影响垃圾填埋场设计者、监管机构、污染物传输模型，以及参与渗透/渗滤研究或围堵系统设计的其他人。