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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
Diserahkan: 26 Julai 2017/Diterima: 20
Februari 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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*Pengarang untuk surat-menyurat; email: gdsbgoh@gmail.com
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