METHOD AND APPARATUS FOR SELECTIVE SOIL FRACTURING, SOIL EXCAVATION OR SOIL TREATMENT USING SUPERSONIC PNEUMATIC NOZZLE WITH INTEGRAL FLUIDIZED MATERIAL INJECTOR

摘要

An apparatus and associated method of soil working is provided for performing one or more of soil fracture, soil excavation and soil treatment. The method comprises the steps of: supplying a source of pressurized gas; supplying a source of fluidized material; positioning a nozzle adjacent the soil; directing a stream of the pressurized gas through the nozzle at the soil being worked; and entraining a stream of fluidized material in the gas stream prior to the stream reaching the soil.