On the standard for the selection of monoliths of landing grounds from the dudoks inserted side gruntonose GBM-1
Existing grousers have drawbacks that reduce their effectiveness, especially when selecting subsidence grounds. A lateral primer of GBM-1 and a standard for the selection of monoliths of subsidence ground from pipes have been developed. The lateral priming of GBM-1 ensures the preservation of the natural addition of subsidence in the selected monoliths from a depth of up to 20 m (the coefficient of correlation in the density of the skeleton of soils with monoliths selected by the reference method was 0.954), excludes the worker's descent into the pipe, the use of wall supports and forced ventilation of the pipes ; reduces the tunneling work in each pipe by 1 m; increases by 4-6 times the productivity of sampling monoliths of soils from the pipes as compared to the selection manually. The standard can be used to study the properties of subsidence and non-shrinkage soils for buildings and structures with an increased level of responsibility.