ASSESSMENT OF TECHNICAL CONDITION OF GEOTEXTILE PROTECTIVE FILTERING MATERIALS WITH VARIOUS TERM OF OPERATION OF THE DRAINAGE

Abstract

These inspections of technical condition protective filtering geotextile materials of a drainage for a number of reclamation objects are given in the Pukhovichsky district of the Minsk region and the Luninetsky district of the Brest region. The drainage made of plastic corrugated pipes with the protective material Typar SF 27. In the course of inspection the reclamation situation on a drainage site was established, the drainage drain was measured, the condition of the mouth and its internal surface was fixed. Excavation of drains is carried out and samples of drainage pipes with protective a filtering material with operation terms from 2 to 8 years on the peat soils spread by sand are selected. Excavation and survey of pipes and a filtering material revealed big degree of a zaokhrivaniye of an internal surface of a pipe and filters. It is noted essential кольматаж by ferruterous deposits of punched openings of pipes and protective a filtering material. By Zaileniye of pipes sandy particles it wasn't observed. As a whole by results of inspection of objects it is established that the drainage from plastic pipes with protective a filtering material from geotextiles of Typar SF 27 provides a satisfactory water mode on the reclaimed lands. The drainage drain for inspection (May - June) made 0,01 - 0,2 p/a of collectors.