In-Situ Evaluation of Hazardous Waste Barriers Using Guided Seismic Waves

这项提议的目标是开发一种技术，能够识别、定位和量化通过含有危险渗滤液的衬里或屏障的泄漏。该技术基于地震边界波的使用。这些波沿着线性或障碍物形成的土/水和土/土边界传播。这些边界波集中在线性界面上，并且对该界面的条件非常敏感。可以检测到水分、空隙比和渗透率的变化，并将其与泄漏事件相关联。在第一阶段，通过进行小规模实地试验证明了这一概念的可行性。第二阶段的目标是：确定概念，整合硬件，开发分析和解释软件，开发实现方法和解释技术。

The objective of this proposal is to develop a technique capable of identifying, locating and quantifying leakages through liners or barriers that contain hazardous leachates. The technique is based on the use of seismic boundary waves. These waves propagate along soil/water and soil/soil boundary created by a liner or barrier. These boundary waves are focused on the liner interface and are highly sensitive to the conditions of this interface. Changes in moisture, void ratio and permeability can be detected and correlated to leakage events. On Phase I the feasibility of this concept was demonstrated by conducting a small scale field test. The objective of Phase II is to: confirm the concept, integrate the hardware, develop the analysis and interpretive software, develop implementation methods and interpretive techniques.