Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application.During underground space exploitation in the urbanization process, numerous foundation pits were constructed where a diaphragm wall was often used as a retaining structure and waterproof curtain.  The leakage wall imaging system using a thermal imager was efficient in visualizing leaking, which was not visible to the naked eye.  In this study, infrared thermal imaging technology was introduced in potential leakage detection for the diaphragm wall of a foundation pit. 
THERM