Deep hole lime stabilisation for progressive failure cut slope in weathered shale

Landslides in weathered shale cut slope which are discussed in this paper have occurred continuously for more than seven years since 1974. The technique of deep hole lime stabilisation was assigned to the landslide area to stop its movement in 1982. The existing cut slope was reshaped and cut into different steps, then series of drilled holes of 0.3- 0.5 Metre were made at a spacing of about 3 metres along all steps. After drilling each hole, a mixture of lime and water was poured into the hole initiating the lime stabilisation of the soil around the hole. Every day during the field works, more water and more lime were poured down the hole and stirred at the same time to get the concentrated lime water to migrate around the hole. This process was repeated for a duration of 1-3 months, depending on the sequence of lime hole drilling. After two years of lime migration, the angle of shearing resistance was found to increase for about 1-6 degrees. Cohesion value was slightly changed. Natural water content showed the trend of decreasing. No sign of progressive failure of the cut slope and no sign of upheaval of the roadway were found (a).

• Record URL:
  http://arrbknowledge.com
• Authors:
  • Ruenkrairergsa, T
  • Sanguankeo, S
  • Pimsarn, T
• Conference:
  • Australian Road Research Board (ARRB) Conference, 13th, 1986, Adelaide, Australia
• Publication Date: 1986

Language

• English

Media Info

• Pagination: 233-40
• Monograph Title: Study on bitumen with a view to improving road surfacing
• Serial:
  • Volume: 13
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Boreholes; Calcium oxide; Developing countries; Failure; Field tests; Plasticity; Seepage; Shale; Slope stability; Soil stabilization
• Geographic Terms: Thailand
• ATRI Terms: Bore hole; Developing countries; Failure; Field test; Lime; Plasticity; Prevention; Seepage; Shale; Slope stability; Soil stabilization
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 01427393
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Aug 24 2012 2:17PM