Performance of Geo-synthetic Filter Materials as Drain Envelope in Land Reclamation in Haryana

Mohan Lal; V.K. Arora; S.K. Gupta

doi:10.52151/jae2012494.1490

Authors

Mohan Lal National Institute of Technology, Kurukshetra, Karnal Author
V.K. Arora National Institute of Technology, Kurukshetra, Karnal Author
S.K. Gupta Emeritus Scientist, Central Soil salinity Research Institute, Karnal. Author

DOI:

https://doi.org/10.52151/jae2012494.1490

Keywords:

Envelope, envelope wrapping machine, geo-synthetic envelope, subsurface drainage, woven synthetic envelope

Abstract

Geo-synthetic envelope materials are increasingly replacing gravel/sand in subsurface drainage systems commonly installed to reclaim waterlogged salt affected lands. The availability constraints of gravel/sand envelopes, transport cost, design complexities, application difficulties in mechanized construction helped the switchover to synthetic envelopes, especially geo-synthetic materials. Geo-synthetic envelope materials used in Haryana Operational Research Project (HOPP) were found to be strong enough to withstand handling during transport, manual or machine wrapping, and for use with a drainage pipe laying machine. These materials were tested in the laboratory to characterize them and recommend their use as envelope materials. The field data after 3 and 6 years of installation of the drainage system at Jhajjar in Haryana with geo-synthetic envelope materials revealed much less silting of pipes than the recommended guidelines. The characteristics of a woven synthetic material used to wrap perforated collector pipes are discussed. A machine earlier designed to wrap the geo-synthetic material was evaluated for its capacity. The machine could handle 1.5-2.0 km of pipe daily with 8 semi-skilled labourers, enabling to cope up with the demand of a pipe-laying trencher machine that could lay about 1.5 km of laterals in a single day.

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