Dams

Dams ..... (3 answers)

• can be used to store water and provide water supplies

• can be used to regulate river levels

• can be used as a clean source of power to produce electricity

• are not used for irrigation and recreation

Which is true about embankment dams ? (2 answers)

• They are built of earth or rocks

• They are built in wide valleys with less solid rocks

• They are built in narrow valleys with sound rocks

• They are built of concrete or stone

Natural dam-related hazards: (3 answers)

• strong earthquakes

• excess precipitation or snow melt

• landslide

• mistakes made during design or construction stages

• aging of installations and dam materials

Man-made dam-related hazards: (3 answers)

• errors in use of dams

• excess precipitation or snow melt

• landslide

• mistakes made during design or construction stages

• aging of installations and dam materials

Dam failures .... (2 answers)

• may lead to considerable human losses

• can cause a flood wave and flooding

• can conserve natural conditions for plants and fauna

the largest dam accidents are influenced by human behaviour

• True

• Flase

How to reduce dam-related hazards... (2 answers)

• continuous digital monitoring system -Automatic Data Acquisition Systems (ADAS)

• regular training emergency courses

• irregular visual inspection of dam surfaces and foundations

Which of these can be can be monitored by modern technology?

• seismic hazards, Landslide hazards and flooding hazards

• only Landslide hazards and flooding hazards

Many dam-related hazards can be avoided and the most important things to be taken into account are: (4 answers)

• active tectonic faults

• landslides and slope stability

• high permeability of the rock or soil surrounding the dam

• peak flood flows

• animal habitats

Even if the detection of structural problems occurs relatively late, action can be taken to mitigate its effects, for example by lowering water levels.

• True

• False