Stability of soil slope in Almaty covered with steel slag under the effect of rainfall

Rezat Abishev, Alfrendo Satyanaga, Gulnur Pernebekova, Harianto Rahardjo, Qian Zhai, Chang Seon Shon, Sung Woo Moon, Jong Kim

Research output: Contribution to journalArticlepeer-review

Abstract

The issue of rainfall-induced slope failure has attracted more attention from geotechnical engineers as a consequence of global warming. Current cumulative waste disposal has generated scientific interest in the utilization of waste materials in geotechnical design for climate change adaptation measures. Taking into consideration the effect of slope height and angle, steel slag—a waste product derived from the production of steel—was investigated as a slope cover against rainfall. To assess the stability of the slope and the infiltration of water into the soil, numerical analyses were conducted using both SEEP/W and SLOPE/W software in conjunction with rainfall conditions. Based on the findings, it can be concluded that increasing the slope's elevation and inclination will have an adverse effect on its safety factor. Steel slag can nevertheless be utilized for minimizing rainwater infiltration into the slope, as indicated by the pore-water pressure variations and graphs of the safety factor versus time. For a 20-m slope height, steel slag slopes have demonstrated a lower factor of safety difference in comparison to the initial slope without remediation. Regardless of slope angle and slope height, the safety factor reduces marginally during rainfall.

Original languageEnglish
Article number7711
JournalScientific Reports
Volume14
Issue number1
DOIs
Publication statusPublished - Dec 2024

Keywords

  • Rainfall
  • Slope stability
  • Steel slag
  • Unsaturated soil

ASJC Scopus subject areas

  • General

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