Excavation Shield Method "OSJ Method"

A groundbreaking advanced technology for underground conduit installation work.

The "OSJ Method" is a continuous excavation shield pipe (box) installation method that involves performing a series of operations from excavation to backfilling while conducting soil retention using an open shield machine (OSJ machine) during the underground construction of pipes (box culverts) and open channels in urban areas. With a wealth of construction achievements, continuous improvements to the machinery, and numerous patents obtained, this method has now established itself as a reliable and unique construction technique, enabling safer and faster construction. Additionally, this method is registered in ARIC (Agricultural and Rural Development Private Technology Database). 【Features】 ■ Reduction of impact on living environments and decrease in traffic disruptions ■ Improved safety ■ Wide applicability ■ Significant shortening of construction periods ■ Cost reduction *For more details, please download the PDF or feel free to contact us.

Civil Engineering MethodGround foundation construction method