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Sains Malaysiana 47(7)(2018): 1413–1421
http://dx.doi.org/10.17576/jsm-2018-4707-08
A Systematic Approach of Rock Slope Stability Assessment:
A Case Study at Gunung Kandu, Gopeng, Perak, Malaysia (Pendekatan Sistematik untuk Penilaian Kestabilan
Cerun Batuan: Kajian Kes di Gunung Kandu, Gopeng, Perak, Malaysia)
AINUL MARDHIYAH MOHD RAZIB1, GOH THIAN LAI1*, NUR AMANINA MAZLAN1, MUHAMMAD FAHMI ABDUL GHANI1, TUAN RUSLI TUAN MOHAMED2, ABDUL GHANI RAFEK3, AILIE SOFYIANA SERASA3,4, YANLONG CHEN5 & MINGWEI ZHANG5
1School of Environment and Natural Resources Sciences, Faculty
of Science and Technology
Universiti Kebangsaan Malaysia, 43600 UKM
Bangi, Selangor Darul Ehsan, Malaysia
2Department of Mineral and Geoscience Malaysia Perak, Jalan
Sultan Azlan Shah
31400 Ipoh, Perak Darul Ridzuan, Malaysia
3Department of Geosciences, Universiti Teknologi PETRONAS, 32610
Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
4School of Engineering (Petroleum), Asia Pacific University
of Technology & Innovation (APU)
Technology Park Malaysia,57000 Bukit Jalil, Kuala Lumpur, Federal Territory, Malaysia
5State Key Laboratory for Geomechanics &
Deep Underground Engineering, China University of Mining and Technology,
Xuzhou 221116, China
Received: 26 July 2017/Accepted: 20
February 2018
ABSTRACT
The stability of the limestone cliff
at Gunung Kandu, Gopeng, Perak, Malaysia
was assessed based on the Slope Mass Rating (SMR) system on 53 cross sections
of the Gunung Kandu hill slopes. The slopes of Gunung Kandu were
identified as class I (very good) to IV (poor). The kinematic analysis
showed that 12 out of 53 hill slopes of Gunung Kandu were identified
as having potential wedge, planar and toppling failures. The assessment
showed that the stability of the western flanks can be classified
as stable to unstable with the probability of failure from 0.2 to
0.6. The stability of the eastern and southern
flanks range from very stable to partially stable with the probability
of failure from 0.0 to 0.4. While the stability of northern
flanks are from very stable to stable
with the probability of failure of 0.0 - 0.2. This systematic approach
offers a practical method especially for large area of rock slope
stability assessment and the results from probability of failure
values will help engineers to design adequate mitigation measures.
Keywords: Gunung
Kandu; Kinta; limestone; slope mass rating; slope stability assessment
ABSTRAK
Kestabilan cerun batu kapur di Gunung
Kandu, Gopeng, Perak, Malaysia dinilai berdasarkan sistem Perkadaran
Jasad Cerun (SMR) terhadap 53 keratan rentas cerun bukit Gunung Kandu
dinilai dengan menggunakan Perkadaran Jasad Cerun (SMR).
Cerun Gunung Kandu dikenal pasti sebagai kelas
I (sangat baik) kepada IV (tidak baik). Analisis kinematik
mendedahkan bahawa 12 daripada 53 cerun bukit Gunung Kandu yang
telah dikenal pasti mempunyai ragam kegagalan baji, satah dan keterbalikan.
Penilaian ini mendedahkan bahawa kestabilan
bahagian tebing barat dikelaskan sebagai stabil kepada yang tidak
stabil dengan kebarangkalian kegagalan daripada 0.2 ke 0.6.
Kestabilan bahagian tebing timur dan selatan
adalah daripada sangat stabil kepada separa stabil dengan kebarangkalian
kegagalan daripada 0.0 ke 0.4. Manakala
kestabilan bahagian tebing utara adalah sangat stabil sehingga stabil
dengan kebarangkalian kegagalan sebanyak 0.0 - 0.2. Pendekatan
sistematik ini menawarkan satu kaedah yang praktik terutamanya untuk
penilaian kestabilan tebing bukit yang luas dan keputusan kebarangkalian
nilai kegagalan akan membantu jurutera
untuk mereka bentuk langkah mitigasi yang lebih baik.
Kata
kunci: Batu kapur; Gunung Kandu; Kinta; penilaian kestabilan cerun; perkadaran
jasad batuan
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*Corresponding author; email: gdsbgoh@gmail.com
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