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.
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basic information
【Construction Procedure】 1. Positioning 2. Inverted drilling (drilling 8 inches) 3. Fixing the casing pipe 4. Base plate drilling (drilling 5 inches) 5. Installing the filter 6. Removing and fixing the casing pipe 7. Installing the guide pipe 8. Vibration work 9. Gap filling work *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
Company information
We have been in the construction business for over 100 years, based in Ishikawa Prefecture.
