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How about construction technology of jet drilling machine?
Mar 25, 2016

This process of jet drilling machine can be used to reinforce soils or to reduce their permeability. Applications include underpinning of existing structures, cut-off walls, sand layer…

 

 

The jet grouting rods are first positioned to the target depth using some boring technique. Jets of air, water, and/or grout are simultaneously used to progressively erode the native soil and replace it with a soil-grout (cement) mixture. Jet grouted columns columns of soil cement mix of a diameter varying from 500 mm to 1500 mm can be installed can be overlapped to produce subsurface walls of soil-cement.

 

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