15-06-2013, 02:58 PM
Reservoir / Pond Liner
Reservoir.ppt (Size: 4.98 MB / Downloads: 98)
INTRODUCTION
Vast amounts of water are lost through seepage, especially where the soil is gravelly and porous. It is estimated that 70% of water is lost between the storage and usage point. Many states have been experiencing drought resulting in shortage of water, particularly during the summer months.
Because of seepage, the water level of the reservoirs and tanks depletes rapidly seepage losses not only mean loss of useful water but also lead to other problems such as breach in the embankment, water logging and increased salinity in adjacent areas.
Water Management is the cheapest and purest source of water is rain water. Harvesting of the water in pond, lakes, wells, tanks and reservoirs helps to preserve this water so that it can be put to varied uses later on. One of the most effective ways of water management is through Pond / Canal Lining.
With appropriate lining of reservoirs, ponds, canals the seepage loss can be minimized.
Reasons for Reservoir Lining:
To reduce the seepage of water
To stabilize channel bed and banks ( to reduce erosion)
To reduce piping through and under channel banks
To decrease hydraulic roughness ( flow resistance)
To avoid water logging of adjacent land
To reduce maintenance cost and facilitate cleaning
To promote movement of water rather than deposition of sediments
To reduce excavation cost
Reservoir Lining:
Pond sealing or lining is the process of installing a fixed lining of impervious material, or mechanically treating the soil in a pond to impede or prevent water loss.
Ponds can serve as storm water management detention facilities, add visual aesthetics, create an environment for wildlife, and serve as golf course hazards.
These reservoirs and ponds are located in a variety of soil types which –exhibit a wide range of seepage characteristics.