Construction and testing of an impermeable segmented horizontal barrier was conducted jointly by Obayashi Corporation and the Idaho National Engineering and Environmental Laboratory in Tokyo,Japan.The 4 by 5 meter Smart Subsurface Barrier~C(SSB)was constructed using a tunnel boring machine and inspected by radioisotope and ultrasonic sensors.The system was then characterized for overall hydraulic conductivity.Archeological disassembly and comparison of physical observations with characterization was also performed.Actual performance exceeded expectations and new insights were obtained into success mechanisms of horizontal in-situ installation,grouted assemblies and performance of inspection technologies.
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机译：不可渗透分割水平屏障的建设和测试是由Obayashi Corporation和Idaho National Engineering and Environal实验室在日本，使用隧道镗床构建4乘5米智能地下屏障〜C（SSB）并进行检查 通过放射性同位素和超声波传感器。然后，该系统的特征在于整体液压导电性。也表征了整体液压导电性。也进行了表征的物理观测的结构。造成横向安装的成功机制，灌浆组件的成功机制，成功机制，灌浆组件的成功机制，成功机制，水平原位安装的成功机制，灌浆组件的成功机制，成功机制，灌浆组件的成功机制，还表现了整体液压导电性的。 检验技术的性能。
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