Seismic retrofitting measures: Maintenance-free and reliable manhole VD method.
Through non-excavation, we will implement seismic reinforcement measures for existing manholes.
This method suppresses the uplift of manholes through two functions: ground improvement by vibration and the drainage function for excess pore water pressure relief. It allows for drilling from inside the manhole to the bottom of the manhole without drawing in groundwater or soil, enabling the installation of a filter. By vibrating the manhole body and compacting the surrounding ground, ground improvement is achieved, and even if excess pore water pressure occurs due to aftershocks, it is maintenance-free, providing peace of mind. [Features] - No excavation - Maintenance-free - Resistant to aftershocks *For more details, please refer to the PDF document or feel free to contact us.
- Company：吉光組
- Price：Other
