Methodology for Determining the Filtration Parameters of Drainage Bedding During Engineering Surveying

Abstract

In recent years we have encountered a big issueunderflooding in large cities and settlements, railroads' and highways' locations. In order to prevent and liquidate the consequences of underflooding during the design of engineering structures, it is necessary to carry out engineering surveying, which will help to obtain parameters of soil filtration (drainage bedding in underflooded areas, etc.). The article presents a methodology for determining the filtration parameters of drainage bedding (the Korchevskaya methodology), which allows to simplify the method of obtaining and processing feed data. In these studies, sand was used as a drainage bedding and the coefficients of filtration, lack of saturation and water loss were determined. This methodology allows obtaining the filtration parameters that are necessary for predictive estimates of underflooding of lands with various purposes and designing engineering structures, when performing elementary experiments, such as pouring water into the studied rocks of different compositions. The developed methodology allows you to automate the calculation using information systems.

Journal of Water and Land Development

“…Head losses reached 30 cm total head, up to a run greater than 2 h when the 4 cm bed was used; this behaviour was attributed to the penetration capacity of the suspended material in the bed due to the high filtration rates and the deposition of this material in pores of the bed as reported by MAHANNA et al [2015]. For limestone, no significant correlation is observed in the filtration run concerning head losses or bed thickness, because the flow through the limestone bed is not driven in the same way as in a sand bed due to the possible interaction between electric charges present in the material and the capillary flow due to the surface tension [USHAKOVA et al 2020]. The behaviour of the bed when using sand could be due to the fact that in the sand, the losses increase linearly with time due to the constant accumulation of material in the bed, decreasing the porosity and restricting the flow, which indicates that the filtration phenomenon in sand is due to sifting; however, in limestone, a linear behaviour is also observed over time but tends to remain constant, which suggests that the filtration mechanism in limestone is not influenced by the retention of particles in the bed [HU et al 2020].…”

On the use of a beam infiltration water intake structure for water supply purposes

“…The infiltration water intake structure of the beam type is designed and shown in Figure 1. The equipment of beam water intakes consists of a water-lifting unit, connecting, suction and pressure water lines, valves and control and measuring equipment [11,12,13,14].…”