RESTORATION OF PERFOMANCE OF THE DRAINAGE SYSTEM OF OPEN-PIT MINE BY HYDRODYNAMIC METHOD

Abstract

The closed tubular drainage is a part of the complex drainage system of the Sokolovskiy open-pit mine and is located on the berms of the upper horizons. Over the fifty years since the construction of the drainage, its efficiency has significantly decreased, which caused flooding of the upper berms and an increase in the number of deformation processes. In many ways, the drainage efficiency has decreased due to clogged pipes. The object of study is the clogged perforated pipes and the flow of water through them to spillway wells. The aim of the work is to study the colmatation of the horizontal tubular drainage, to evaluate the length and frequency of the pipe clogs, as well as the effect of colmatation on water inflows to the spillway wells. Methods of study: analysis of the mining and geological conditions of the rock mass at the sides of the Sokolovskiy open-pit mine, measurements of water inflows from the horizontal tubular drainage before and after pipe cleaning, hydrodynamic pipe cleaning. As a result of the study, the locations of the colmated pipe sections and the clog lengths have been determined, the drainage capacity has been increased, and the recommendations have been made on maintaining the effective drainage in the upper horizons of the open-pit mine.