Analisis Stabilitas Lereng Batuan dengan Pendekatan Kriteria Keruntuhan Hoek-Brown dan Mohr Coulomb Menggunakan Metode Numerik Plaxis 2D
DOI:
https://doi.org/10.26740/proteksi.v4n2.p74-81Keywords:
hoek-brown, kriteria keruntuhan, lereng batuan, mohr-coulomb, plaxis 2DAbstract
Stabilitas lereng merupakan salah satu faktor penting yang harus diperhatikan dalam merancang suatu lereng batuan. Aktivitas penggalian dalam massa batuan dapat mengakibatkan terjadinya kelongsoran atau keseimbangan lereng terganggu. Analisis stabilitas lereng batuan dapat dipengaruhi oleh tiga faktor seperti kekuatan massa batuan, faktor kerusakan akibat peledakan dan geometri lereng. Pada penelitian ini akan dilakukan perbandingan analisis lereng batuan menggunakan model material Hoek-Brown (HB) dan Mohr-Coulomb (MC) berdasarkan persamaan Hoek-Brown Tahun 2002. Klasifikasi massa batuan akan menggunakan sistem Rock Mass Rating (RMR) dan Geological Strength Index (GSI). Metode Elemen Hingga pada program Plaxis 2D digunakan untuk menentukan nilai faktor keamanan. Hasil analisis menunjukkan bahwa selisih perbedaan nilai faktor keamanan antara model HB dan MC tidak signifikan. Nilai perbedaan paling besar yaitu 10%. Selain itu, antara kedua model ini menghasilkan bidang gelincir yang mirip. Sehingga dapat disimpulkan bahwa persamaan Hoek-Brown Tahun 2002 dapat digunakan sebagai korelasi parameter Mohr-Coulomb.
References
Alejano, L. R., Ferrero, A. M., Ramírez-Oyanguren, P., Fernández, M. I. A. 2011. Comparison of limit-equilibrium, numerical and physical models of wall slope stability. Int J Rock Mech Min Sci, 48, 16–26.
Andajani, N., Triarso, A. 2020. Korelasi Antara Parameter Indeks Plastisitas dengan Sudut Gese Tanah dengan Penambahan Kapur Terhadap Stabilisasi Daya Dukung Pondasi Dangkal. Proteksi, 2(1), 21-26
Bieniawski, Z. T. 1979. The geomechanics classification in rock engineering applications. In: Proceedings of the 4th International Congress on Rock Mechanics, 41–48
Brinkgeve, R. B., Kumarswamy, S., Swolfs, W. M. 2016. Material Models Manual. Netherlands: Plaxis 2D.
Brown, E.T. 1970. Strength of models of rock with intermittent joints. J. Soil Mech. Foundn Div, 96(6), 1935-1949.
Chen, J., Lin, H. 2018. Consistency analysis of Hoek–Brown and equivalent Mohr–Coulomb parameters in calculating slope safety factor. Null Eng Geol Environ, 78, 4349-4361.
Deere, D. U. (1964). Technical description of rock cores for engineering purposes. Rock Mech Eng Geol, 1(1), 16–22.
Hoek, E., Brown, E. T. 1980. Empirical strength criterion for rock masses. J. Geotech. Engng Div., ASCE, 106 (GT9), 1013-1035.
Hoek, E. 1968. Brittle failure of rock. In Rock Mechanics in Engineering Practice. (eds K.G. Stagg and O.C. Zienkiewicz). London: Wiley
Hoek, E., Brown, E. T. 1980. Underground excavations in rock. London: The Institution of Mining and Metallurgy.
Hoek, E. 1994. Strength of rock and rock masses, ISRM News Journal, 2(2), 4-16.
Hoek, E., Carranza-Torres, C., & Corkum, B. 2002. Hoek-Brown failure criterion-2002 edition. Proceedings of NARMS-Tac, 267-273.
Hoek, E. 2006. Practical Rock Engineering. Canada.
Jiang, Q. H., Qi, Z. F., Wei, W., Zhou, C. B. 2015 Stability assessment of a high rock slope by strength reduction finite element method. Bull Eng Geol Environ, 74,1153–1162.
Ledesma, O., Mandive, I. G., Sfriso, A. 2016. Factor of Safety by The Strength-Reduction Technique Applied to The Hoek-Brown Model. Mecanica Computacional XXXIV, 2599-2622.
Lin, H., Chen, J. 2017. Back analysis method of homogeneous slope at critical state. KSCE J Civ Eng, 21, 670–675.
Shen, J. Y., Karakus, M. 2012. Determination of Mohr–coulomb shear strength parameters from generalized Hoek–Brown criterion for slope stability analysis. Rock Mech Rock Eng, 45, 23–129.
Shen, J. Y., Karakus, M. Xu, C., S. 2012. Direct expressions for linearization of shear strength envelopes given by the generalized Hoek-Brown criterion using genetic programming. Comput Geotech, 44, 139–146.
SNI 8460. 2017. Persyaratan Perancangan Geoteknik. Jakarta: Badan Standardisasi Nasional.
Published
Issue
Section
License
Copyright (c) 2022 Desti Pratiwi, Yuki Achmad Yakin, Aldo Mahaputra
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Abstract views: 553
,
PDF Downloads: 1933
, PDF Downloads: 86
