In June 2025, a mountainous section of Provincial Highway S303 in Yunnan suffered a serious slope collapse due to continuous heavy rain. The local road maintenance department required a quick, economical and reliable repair scheme to resume traffic within two weeks.
After comparison and selection, the project team decided to use welded gabion. Different from the cast-in-place concrete retaining wall, welded gabion does not need formwork, maintenance and large mechanical construction. It is prefabricated, folded and transported, and can be quickly assembled on site with spiral wires.
Workers completed the installation and filling of 120-meter welded gabion retaining wall along the collapsed slope in three days with local gravel materials.
The highway resumed normal traffic in only 9 days, 5 days earlier than planned. The stable welded structure effectively stopped soil displacement. The standard galvanized layer (260g/m²) provides more than 20 years of anti-corrosion service with almost no later maintenance.
This project shows that welded gabion has obvious advantages in emergency slope reinforcement, including fast construction, strong adaptability to local materials and terrain, and remarkable economic benefits.
