Experience in the Application of Jet Cementation for Arrangement of Anti-Filtration Curtains in Rocky Soils

Time and current circumstances dictate the need to move from horizontal to vertical zoning of urban space, which can ensure the formation of a comfortable residential and industrial environment, based on the deep-spatial organization of the entire system of objects. The design and technology of the pit excavation during the construction of an underground structure in an open way should ensure its waterproofness, if dewatering is impossible or economically impractical. When placing the underground structure below the level of underground water and it is impossible to bury the pit fence in a water barrier (imperfect pit fence), the construction of vertical and horizontal anti-filtration curtains (AFC) around the underground part of the building is widely used. As a rule, cementation by the method of filling under low pressure is used to reduce the filtration of underground water through cracks. But starting from a depth of ten to twelve meters from the ground surface, this method is not effective enough, high speeds of pressure water movement lead to washing out the mixture. The article describes the experience of designing and installing AFC in fractured soils using jet-grouting technology. The conducted works have shown that jet cementation has certain advantages over traditional methods of filling cementation in rock soils fractured and destructed to earthy marls in the zone of pressure underground water.

O.A. MAKOVETSKY¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
D.S. KONYUKHOV², Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
S.S. ZUEV³, Deputy General Director(This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Russian University of Transport (MIIT) (9, bldg. 9 Obrazcova Street, Moscow, 127994, Russian Federation)
² JSC “Mosinzhporoekt” (10, Khodynsky Blvd., Moscow, 125252, Russian Federation)
³ JSC “New Ground” (35, Kronshtadtskaya Street, Perm, 614081, Russian Federaion)

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