| 摘要 |
FIELD: construction.SUBSTANCE: drainage system comprises k experimental drainage systems - versions of R replication with n number of experimental drains, connected with a closed header k-R, made of pipes with water impermeable walls without joints and water receiving holes and entering an inspection drop hydrometric manhole. M number of parallel pipes of closed headers enter the inspection drop hydrometric manhole at the same time and are made with a section with entering drains and an idle part. As the experimental drainage system version is moved away from the inspection drop hydrometric manhole, the idle part of the closed header of the previous experimental drainage system-version is shorter than the idle part of the closed header of each subsequent experimental drainage system version. Pipes of closed headers entering the inspection drop hydrometric manhole are equipped with a cantilever water outlet and are laid in one trench in tiers in different parallel vertical planes.EFFECT: invention makes it possible to improve conditions for mechanisation of field works, to perform reconstruction and repair of each header and its drains, without interfering with other headers, to reduce number of weed seed pilots.4 dwg |
