System and method for injecting expanding resins into soils to be consolidated

A method for injecting expanding resins into soils to be consolidated, the method including the following steps:

• drilling a soil to be consolidated in order to provide at least one hole,
• estimating a rupture pressure of the soil at regions affected by said hole,
• providing a system for injecting expanding resins into said soils to be consolidated, said system comprises:
• a pump apparatus operationally associated, at a delivery port, with a tubular element having, at a lateral surface thereof, a plurality of holes mutually spaced apart along a direction of longitudinal extension of said tubular element, wherein at least two of said plurality of holes comprise respective holes which have an outlet, said pump apparatus being adapted to supply intermittently said expanding resin toward said delivery port,
• calculating a rupture pressure of the soil at each one of said plurality holes,
• inserting, into said at least one hole, said tubular element and
• supplying intermittently, by way of said pump apparatus at a preset supply pressure, said expanding resin toward said delivery port,
• providing dimensions of the outlets of said plurality holes and the preset supply pressure of the resin to said tubular element so as to provide an outflow of the mixture through the respective outlets at a pressure that is higher than said rupture pressure, and so as to provide a substantially identical flow-rate of the mixture passing through each one of said at least two holes.