All Geological Adaptable Open-Cut Shield Method "OSJ-CONG Method"

Eliminates the need for auxiliary waterproofing methods such as liquid injection! It is also possible to reduce the impact on the surrounding area.

The "OSJ-CONG method" suppresses the outflow of groundwater from the face and the inflow of groundwater from the excavation bottom, eliminating the need for groundwater lowering methods such as well points and auxiliary waterproofing methods like chemical injection. By equipping the OSJ machine itself with collection and drainage functions, it eliminates the prior lowering of groundwater levels and allows for early recovery of water levels after passing through the OSJ machine. Furthermore, by minimizing the duration of groundwater level reduction, it prevents impacts on the surrounding area. 【Features】 ■ Prevents collapse of the face by suppressing the outflow of groundwater from the face. ■ Improves the constructability of the foundation by suppressing the inflow of groundwater from the excavation bottom. ■ Eliminates prior lowering of groundwater levels and enables early recovery of water levels after passing through the OSJ machine. ■ Minimizes the duration of groundwater level reduction, thereby preventing impacts on the surrounding area. *For more details, please refer to the PDF document or feel free to contact us.

Special Construction Method