SOIL COMPACTING DEVICE AND A FOUNDATION SOIL PROVIDED WITH A TECHNOGENIC FRAME

摘要

The invention relates to construction engineering, in particular to compacting a foundation soil. The aim of said invention is to extend operational possibilities by compacting dispersed bound soils such as clays, sandy clays and slay sands, also unbound dispersed soils such as sands and filled technogenic soils by injecting a mortar exhibiting a high-penetration capability into the soil. The inventive soil compacting device is embodied in the form of injecting tubes (1) for pumping a concrete mortar arranged at a pitch of 2.0-4.0 m in the soil body. The injection is carried out through or under a weight embodied in the form of a concrete slab placed on a dispersed soil. The openings (2) of a perforated side surface of the injectors are closed by plugs (3) which are simultaneously destructible at a hydro-fracturing pressure ranging from 3.o to 20.0 atm. Said plugs can be embodied in the form of a strip, which is used for closing the perforated openings and is helically arranged, or in the form of rings. The perforated tube can be provided with a lower end plug (4) which is non-destractable at the hydro-fracturing pressure. The foundation soil is produced by means of the inventive device.