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Debris flow channel with deposits left after 2010 storms in Ladakh, NW Indian Himalaya. Coarse bouldery levees form the channel sides. Poorly sorted rocks lie on the channel floor. Debris flow in Saint-Julien-Mont-Denis, France, July 2013 Scars formed by debris flow in Ventura, greater Los Angeles during the winter of 1983. The photograph was ...
The earliest examples of irrigation works in Sri Lanka date from about 430 BCE, during the reign of King Pandukabhaya, and were under continuous development for the next thousand years. In addition to constructing underground canals , the Sinhalese were the first to build completely artificial reservoirs to store water , referred to as tanks ...
Debris flow channel scoured out by the passage of a debris flow. A flow is a spatially continuous movement in which surfaces of shear are short-lived, closely spaced, and usually not preserved. The distribution of velocities in the displacing mass resembles that in a viscous liquid.
Rain clouds over a tank in Sri Lanka The tank cascade system ( Sinhala : එල්ලංගාව , romanized: ellaṅgāva ) is an ancient irrigation system spanning the island of Sri Lanka . It is a network of thousands of small irrigation tanks ( Sinhala : වැව , romanized: wewa ) draining to large reservoirs that store rainwater and ...
Sri Lanka is pockmarked with many irrigation dams, with its water resource distributed across nearly the entirety of the island for agricultural purposes via artificial canals and streams. Utilization of hydro resources for agricultural production dates back to the pre-Colonial era , with the current crop production now largely dependent on ...
A hyperconcentrated-flow lahar can leave even frail huts standing, while at the same time burying them in mud, [8] which can harden to near-concrete hardness. A lahar's viscosity decreases the longer it flows and can be further thinned by rain, producing a quicksand -like mixture that can remain fluidized for weeks and complicate search and rescue.
Intake was constructed with 4 sluice gates of 3m in width and 2.5 m in height. It satisfies the requirement of getting 25m3/s flow with 1.25 m/s intake flow velocity. The intake conveys the water into the concrete headrace channel. The intake is 30m long, 20m wide and 2.2m deep. [1]
Demolition waste is waste debris from destruction of buildings, roads, bridges, or other structures. [1] Debris varies in composition, but the major components, by weight, in the US include concrete, wood products, asphalt shingles, brick and clay tile, steel, and drywall. [2] There is the potential to recycle many elements of demolition waste. [1]