Dessication Cracking of Clay Liners

本项目的目的是探讨用于危险废物填埋场封顶的粘土衬垫的干燥开裂问题。该项目将量化伴随裂缝的土壤应力，由此产生的裂缝几何形状及其时间变化，以及通过裂缝土壤的流动力学。这些发现将被纳入一个现有的粘土衬里流动的数值模型。该项目的进展有望大大扩展以前对粘土衬层流动的研究，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、污染物运输模型，以及其他涉及渗透/渗透研究或遏制系统设计的人员。

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.