what are different engineering geological problems in Terai zone of Nepal Himalaya. [2070 Bhadra][3]

Talking about the geological hazards, since this zone is a plane area without noticeable relief change, landslides and associated hazards is not possible. This zone is mostly hazardous for flood. The problem of river channel shifting is very common here which is seen by the fact that bridge constructed over the river channel before are isolated from the present river channels in many places.
In the terai zone, main problems for roads, bridges, and other engineering structures is flooding, river bank scouring, and liquefactions in various foundation works due to earthquake in the southern part. Similarly, at the northern part, the stream originating from siwaliks with their shallow and broad channels bring large amount of sediments and cause sudden flood during monsoon perion damaging roads, bridges, buildings, and other infrastructures. Some geological problems of this region are:

• Flooding,
• Liquefaction,
• Excessive sediment deposit,
• Earthq....

Talking about the geological hazards, since this zone is a plane area without noticeable relief change, landslides and associated hazards is not possible. This zone is mostly hazardous for flood. The problem of river channel shifting is very common here which is seen by the fact that bridge constructed over the river channel before are isolated from the present river channels in many places.
In the terai zone, main problems for roads, bridges, and other engineering structures is flooding, river bank scouring, and liquefactions in various foundation works due to earthquake in the southern part. Similarly, at the northern part, the stream originating from siwaliks with their shallow and broad channels bring large amount of sediments and cause sudden flood during monsoon perion damaging roads, bridges, buildings, and other infrastructures. Some geological problems of this region are:

• Flooding,
• Liquefaction,
• Excessive sediment deposit,
• Earthquakes,
• Scouring of banks, piers, abutments etc.
• Subsidence