Theory
Explain the engineering significance of major discontinuity system in Nepal Himalaya.
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Describe the geological problems in lesser Himalaya zone. [2071 Magh] [2]
Highly jointed meta-sedimentary rocks along with numerous folds and faults in lesser himalaya zone accelerates the landslides and slope failure. Intense precipitation and high gradient of river in this zone accelerates the debris flow. The scale of such devastation brought by such debris flow in this region is huge as for example a bridge over Malekhu Khola in Dhading district was collapsed by debris flow . Some of the geological problems of this region are listed below:
- Landslides,
- Debris flow,
- Slope failure,
- Earthquake,
- Flash floods,
- Rock falling and rock toppling.
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