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

REFERENCES

Abdul Ghani, R. & Goh, T.L. 2012. Correlation of joint roughness coefficient (JRC) and peak friction angles of discontinuities of Malaysian Schists. Earth Science Research 1(1): 57-63.

Ailie, S.S., Goh, T.L., Abdul Ghani, R., Norbert, S., Azimah, H., Lee Khai Ern, Noraini Surip, & Tuan Rusli Mohamed. 2016. Development of empirical correlation of peak friction angle with surface roughness of discontinuities using tilt test. AIP Conf Proceedings: 060033-1- 060033-18. doi: 10.1063/1.4966871.

Ailie, S.S., Goh, T.L., Abdul Ghani, R., Azimah, H., Lee Khai Ern & Tuan Rusli Mohamed. 2017. Peak friction angle estimation from joint roughness coefficient of discontinuities of limestone in Peninsular Malaysia. Sains Malaysiana 46(2): 181-188.

Chow, W.S. & Majid Sahat. 1988. Batu runtuh di Gunong Tunggal, Gopeng, Perak. Geological Survey Report. Ipoh: Minerals & Geoscience Department, Malaysia, 1/1988.

Chung, S.K. 1981. Geological Survey Malaysia Annual Report 1981. Geological Survey Department Malaysia.

Foo, K.Y. 1983. The Palaeozoic sedimentary rocks of Peninsular Malaysia - Stratigraphy and correlation. Proceeding of the Workshop on Stratigraphic Correlation of Thailand and Malaysia 1: 1-19.

Goh, T.L., Abdul Ghani, R., Ailie, S.S., Azimah, H. & Lee, K.E. 2016. Use of ultrasonic velocity travel time to estimate uniaxial compressive strength of granite and Schist in Malaysia. Sains Malaysiana 45(2): 185-193. Malaysia. Kuala Lumpur: Geological Society of Malaysia.

ISRM. 1981. International society for rock mechanics; Rock characterization, testing and monitoring. In ISRM Suggested Methods, edited by Brown, E.T. Oxford: Pergamon Press.

Lee, S. & Pradhan, B. 2006. Probabilistic landslide hazards and risk mapping on Penang Island, Malaysia. Journal Earth System Science 115(6): 661-672.

Muhammad Fahmi, A.G., Norbert, S., Goh, T.L., Tuan Rosli, T.M. & Abdul Ghani, R. 2016. Kajian ketumpatan lineamen dalam penilaian potensi jatuhan batuan di kawasan Lembah Kinta. Sains Malaysiana 45(12): 1887-1896.

Norbert, S., Michael, C., de Mairead, R. & Abdul Ghani, R. 2013. Point based assessment: Selecting the best way to represent landslide polygon as point frequency in landslide investigation. Electronic Journal Geotechnical Engineering 18(d): 775-784.

Norbert, S., Muhammad Fahmi, A.G., Goh, T.L., Abdul Ghani, R., Azimah, H., Rodeano, R. & Lee, K.E. 2015. Assessment of rockfall potential of limestone hills in the Kinta Valley. Journal of Sustainability Science and Management 10(2): 24-34.

Norbert, S., Rodeano, R., Abdul Ghani, R., Goh, T.L., Noran, N.N.A., Kamilia, S., Nightingle, L.M., Azimah, H. & Lee, K.E. 2016. Rock mass assessment using geological strength index (GSI) along the Ranau-Tambunan Road, Sabah, Malaysia. Research Journal of Applied Sciences, Engineering and Technology 12(1): 108-115.

Tuan Rusli, T.M. & Ahmad Khairut, T. 2012a. Report Summary of Geological Hazard at Yee Lee Edible Oils Sdn Bhd. Perak: Minerals & Geoscience Department.

Tuan Rusli, T.M. & Ahmad Khairut, T. 2012b. Report Summary of Geological Hazard at GuaTempurung, Kampar, Perak. Perak: Minerals & Geoscience Department.

Romana, M. 1985. New adjustment ratings for application of Bieniawski classification to slopes. Int. Symp. on the Role of Rock Mech. ISRM, Zacatecas. pp. 49-53.

Sutharalingam, T. 1968. Upper Paleozoic stratigraphy of the area West of Kampar, Perak. Geological Society of Malaysia Bulletin 1: 1-15.

Zulfahmi, A.R. 1999. The application of landslide potential hazard zonation mapping in the Ebbw Valley, Gwent, Wales, United Kingdom. Sains Malaysiana 28: 69-86.

 

*Corresponding author; email: gdsbgoh@gmail.com

 

 

 

 

 

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