METHOD TO ARRANGE ANTIFILTRATION SCREEN WITH ALTERNATING WATER PERMEABILITY IN OPERATED ROAD EMBANKMENT Russian patent published in 2014 - IPC E02D31/12 

FIELD: construction.

SUBSTANCE: objective of the invention is development of the method to arrange an antifiltration screen with alternating water permeability in an operated road embankment with optimal parameters of cost, which efficiently reduce water filtration via the operated embankment and providing for its stability. Development of the alternating water permeability is necessary for even distribution of hydrodynamic pressure at the screen body with provision of permanent water flow along the entire screen height, and also for provision of filtration strength of the screen. The proposed method consists in the following: works to submerge injectors into soil; injection of an alkaline solution into soil; withdrawal of injectors. For strengthening they use a bicomponent solution of sodium hydroxide (GOST 2263-79) 2.5-7.5 normal concentration (density of the solution is 1.11-1.32 g/cm³) with addition of lime (1-2% of the working solution mass), injection is carried out via injectors placed vertically at the side of the embankment by stopes, with stope length equal to the sum of length of the perforated part of the injector and the reinforcement radius, injection is carried out via injectors placed vertically at the side of the embankment by stopes, with stope length equal to the sum of length of the perforated part of the injector and reinforcement radius.

EFFECT: reduced filtration of water via a road embankment with the purpose to ensure its stability.

2 dwg