Bangkok Post
Ground at Purple Line site 'stable'
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Ground movement at the Bangkok Purple Line South construction site has stabilised after last week’s tunnel water leak, and unaffected roads are expected to reopen within a week, the Ministry of Transport reported on Monday.
Key facts
- Water leaked into a railway tunnel on the Tao Poon–Rat Burana section on July 8, causing ground subsidence and cracks on Prajadhipok Road near Wongwian Yai
- Ground movement at the Bangkok Purple Line South construction site has stabilised after last week’s tunnel water leak, and unaffected roads are expected to reopen within a week, the Ministry of Transport reported on Monday.
- Deputy Minister of Transport Siripong Angkasakulkiat said surveys recorded average ground settlement of 30 to 32 centimetres, with no further subsidence detected
- The Urban Search and Rescue Team (Usar Thailand), working with Kasetsart University, has installed 10 additional monitoring sensors and deployed LiDAR-equipped drones to create three-dimensional maps tracking ground movement
Summary
Water leaked into a railway tunnel on the Tao Poon–Rat Burana section on July 8, causing ground subsidence and cracks on Prajadhipok Road near Wongwian Yai. The incident prompted road closures, evacuations and inspections of nearby buildings.
Deputy Minister of Transport Siripong Angkasakulkiat said surveys recorded average ground settlement of 30 to 32 centimetres, with no further subsidence detected. In areas where contractors injected chemically treated cement grout into underground voids, the ground has begun to rise slightly.