A rigid landfill project in Inner Mongolia features a single-layer 2.0mm geotextile membrane + 600g monofilament geotextile + 4800g bentonite waterproof mat + 7.0mm composite drainage mesh for the impermeable structure. On-site, an electric spark testing method was used for the landfill leakage detection, with no leakage points found during the process, indicating good detection results. A closed-water test was also conducted later, and no leakage issues were detected.