A study of landslides associated with road construction in himalayas

The occurrence of landslides on hill roads is quite common. The landslides are associated with rock falls, debris falls and flows blocking the road for communication. Land subsidence and blocking of natural streams caused by soil erosion and debris flow are also sometimes seen. Many times a portion of the road slides along with the landslide. Restoration of traffic in these areas not only takes a lot of time and money but also causes great inconvenience to the road users. The landslides also cause huge loss of property and lives to the inhabitants of nearby villages. The authors have studied many cases of landslides in the uttar pradesh himalayas, and as a result of this study preventive and corrective measures are suggested. The important landslides along with their details, as observed during the study, have also been given with photographs. It is necessary to conduct adequate geological investigations before taking up the route location and construction. Afforestation and turfing; systematisation of the drainage; well designed retaining structures; prevention of stream erosion; removal of sliding mass; prevention of surface erosion; bitumen mulching; provision of catch water drains; sealing of cracks; etc, individually or in combination can provide a lasting solution. Felling of trees; removal of vegetation cover; uncontrolled and indiscreet blasting should be minimised to safeguard the various ecosystems. The analysis has shown that the lesser himalayas, especially districts of chamoli, almora and nainital have higher probabilities of landslides. Since the rock structure of the himalayas is highly folded, faulted and fractured, alternate modes of transport, such as ropeways, bridle paths, etc, may be used wherever practical (a).

• Record URL:
  http://arrbknowledge.com
• Authors:
  • Agarwal, P D
  • Dixit, R S
• Conference:
  • Australian Road Research Board (ARRB) Conference, 13th, 1986, Adelaide, Australia
• Publication Date: 1986

Language

• English

Media Info

• Pagination: 172-87
• Monograph Title: Study on bitumen with a view to improving road surfacing
• Serial:
  • Volume: 13
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Developing countries; Landslides; Methodology; Road construction; Slope stability
• ATRI Terms: Developing countries; Landslide; Method; Prevention; Road construction; Slope stability
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 01427387
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Aug 24 2012 2:17PM