Modern approaches to the calculation methodology of parametres of hydraulic settlers
It is shown that the traditional approaches to the division of calculations of settlers into power and irrigation ones are not consistent as the world experience shows. In particular there is given an example on the derivational power plant in Nepal where drifts are very small (mostly 0,01...0,1 mm, 80 % of them being smaller than 0,05 mm) but their concentration amounts to 6,0 kg/m3. The size of drifts in the approach zone to the hydro-electric scheme corresponds to the conditions which are characteristic of irrigation settlers though the settler is a power one. Hence, despite the purpose of the considered settler, it is necessary to carry out its calculation using the method worked out for the irrigation settler. In this article the author offers a simple and repeatedly checked by him method of calculation of settlement of small drifts in the settler illustrated by a particular example.