Geomechanical strength of carbonate rock in Kinta Valley, Perak, Malaysia

11th International Conference on Geotechnical Engineering in Tropical Regions;1st International Conference on Highway and Transportation Engineering 2019

矿业工程;运输工程

Goh, T.L.^1 ; Ailie, S.S.^2 ; Amanina, M. Nur^1 ; Ainul, M.M.R.^1 ; Abdul Ghani, R.^3 ; Norbert, S.^1 ; Lee, K.E.^4

Centre for Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor Darul Ehsan

43600, Malaysia^1

School of Engineering, Faculty of Computing Engineering and Technology, (FCET), Asia Pacific University of Technology and Innovation, Technology Park Malaysia, Bukit Jalil, Kuala Lumpur

57000, Malaysia^2

Engineering Geology Advisory, SS21/12 Damansara Utama, Petaling Jaya, Selangor

47400, Malaysia^3

Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, UKM Bangi, Selangor

43600, Malaysia^4

关键词: Brazilian tensile strengths;    Cut rock slope;    Material characteristics;    Material failures;    Point load strength indices;    Strength characteristics;    Underground opening;    Uniaxial compressive strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/527/1/012038/pdf
DOI  :  10.1088/1757-899X/527/1/012038

来源: IOP

【 摘 要 】

The geomechanical strength of rock materials plays a significant role in influencing the stability of both cut rock slopes and underground openings. The strength characteristics are influenced by both material characteristics and the condition of weathering. This paper presents a systematic approach to quantify the rock material strength characteristics for material failure and material & discontinuities failure by using uniaxial compressive strength, point load strength index and Brazilian tensile strength for carbonate rocks. The mean value of compressive strength, point load strength index and Brazilian tensile strength for with material failure and material & discontinuities failure were 76.8±4.5 and 41.2±4.1 MPa respectively. The Point load strength index for material failure and material & discontinuities failure were 3.1 ± 0.2 MPa and 1.8 ± 0.3 MPa respectively. The Brazilian tensile strength with material failure and material & discontinuities failure were7.1 ± 0.3 MPa and 4.1 ± 0.3 MPa respectively. The results of this research revealed that the geomechanical strengths of rock material of carbonate rocks for material & discontinuities failure deteriorates approximately 1/2 from material failure.