Comparison of sensitivity to erosion and resistance of Asmari limestone, Mishan limestone, Aghajari calcareous sandstone and Gachsaran anhydrite using RMR method

Document Type : Research Paper

Authors

1 Graduated master of watershed management, Natural resources faculty, Behbahan Khatam Alanbia University of Technology

2 Assistant professor Natural resources faculty, Behbahan Khatam Alanbia University of Technology

3 Assistant professor sciences faculty, Behbahan Khatam Alanbia University of Technology

4 Expert of water organization, Kohgiloyeh and Boyer Ahmad regional

Abstract
Data on the resistance of rocks to erosion and weathering and their voluntary ratings are key information in erosion and sediment studies. Despite the importance, rock resistance to weathering is not well studied in Iran and the conducted studies are more qualitative rather than quantitative. In this study rock mass resistances of Asmari formation (limestone) and Fars formations including Mishian (marl limestone), Aghajari (Calcareous sandstone) and Gachsaran (anhydrite) were assessed using rock mass rating (RMR) method in Behbahan, Gachsaran, Deylam and Dehdasht regions. ANOVA and Tukey,s analysis of resistances of 81 collected rock samples showed there were significant differences (P<0.05) between geological formations in term of rock resistance. According to RMR rating, rock mass resistances were in order of Asmari limestone> Mishan limestone> Aghajari calcareous sandstone> Gachsaran anhydrite. Results also indicated there were no significant differences between rock resistances of Fars formations but rock resistance of Fars formations differed significantly from Asmari formation.

Keywords


Volume 72, Issue 3
Autumn 2019
Pages 709-725

  • Receive Date 14 January 2019
  • Revise Date 23 November 2019
  • Accept Date 23 November 2019
  • Publish Date 22 November 2019