Three dimensional slope stability analysis of open pit limestone mine in Rembang District, Central Java

Azizi, Masagus Ahmad; Marwanza, Irfan; Amala, S A; Hartanti, Nadya A.

doi:10.1088/1755-1315/212/1/012035

Cited by 5 publications

(6 citation statements)

References 5 publications

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“…Based on the 3D Grid Search result in Azizi et al (2018), the final global minimum location was directed at the north of the pit. The same result is obtained from 3D CS result.…”

Section: Resultsmentioning

confidence: 99%

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Application of cuckoo search method in 3D slope stability analysis for limestone quarry mine

Azizi

Marwanza

Hartanti

et al. 2020

IMJ

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The Cuckoo Search (CS) is a very fast and efficient global optimization method to locating the slip surface which carried out by iteration. However, the Grid Search (conventional method) method in 3D slope stability analysis takes longer than this method on the computation process. Slope stability analysis was performed using the 3D limit equilibrium method “Bishop” with Cuckoo Search of slip surface by maximizing iteration of the simulation and columns in X or Y. To ensure that the slip surface within the global minimum slip surface, the maximum iteration in CS was also specified from 40 to 1200. Based on maximum columns in X or Y, the safety factor value of the 3D CS results was then compared to the Grid Search results to determine the final 3D safety factor and the estimated volume of potential failure. The final 3D safety factor obtained from the average 3D safety factor (with maximum iteration 400, 800, 1000, and 1200) is about 2,01 with the average estimated volume of slope failure of 190.000 m3 that located at the north of the pit.

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“…Based on the 3D Grid Search result in Azizi et al (2018), the final global minimum location was directed at the north of the pit. The same result is obtained from 3D CS result.…”

Section: Resultsmentioning

confidence: 99%

“…Based on max columns in X or Y, SF value of the 3D CS results were then compared to the Grid Search results as carried out by Azizi et al (2018) to determine the final 3D SF, and the estimated volume of potential failure. Finally, it would be clear if the CS could be used in analyzing slope stability or not.…”

Section: Methodsmentioning

confidence: 99%

Application of cuckoo search method in 3D slope stability analysis for limestone quarry mine

Azizi

Marwanza

Hartanti

et al. 2020

IMJ

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“…Dalam penerapannya pada analisis kestabilan lereng, Teknik Shear Strength Reduction (SSR) diterapkan pada setiap elemen. Deformasi yang disebabkan oleh reduksi kekuatan diproyeksikan oleh noda yang terpasang pada setiap elemen, untuk menghasilkan perpindahan berupa perpindahan noda [9]. Sebelum komputasi, penyesuaian perlu dilakukan pada seperangkat kriteria, yang mengatur waktu penghentian iterasi SSR.…”

Section: Metode Penelitianunclassified

“…dihasilkan. Hal ini dapat dibenarkan oleh penelitian[9] yang menyatakan bahwa perpindahan yang dicatat dalam SSR Finite Element adalah perpindahan yang terjadi sebelum perpindahan. Oleh karena itu, nilai SRF yang lebih tinggi berarti dibutuhkan perpindahan yang besar sebelum terjadi keruntuhan.http://ejournal.ft.unsri.ac.id/index.php/JP Jurnal Pertambangan Vol.…”

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Pengaruh Nilai Toleransi Terhadap Stabilitas Lereng Menggunakan Metode Elemen Hingga 3d

Azizi

Marwanza²,

Maulana³

et al. 2023

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Penggunaan analisis stabilitas lereng menggunakan metode elemen hingga 3 dimensi pada tambang terbuka dalam satu dekade ini telah berkembang dengan pesat. Namun kendala yang dihadapi dalam menerapkan metode tersebut yaitu memerlukan waktu yang lama sehingga tidak mendukung para praktisi geoteknik. Penelitian ini bertujuan menentukan nilai tolerasi optimal yang digunakan dalam menentukan nilai perpindahan total dan strength reduction factor (SRF). Metode yang digunakan adalah metode elemen hingga 3 dimensi dengan tipe mesh 4 noda seragam. Hasil penelitian menunjukkan semakin kecil nilai toleransi, maka semakin kecil nilai perpindahan total hingga mendekati nilai toleransi 1x10-5. Perpindahan total cenderung stabil pada nilai 4.71 meter yang memberikan nilai SRF 1.2.

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“…Commonly, to guarantee an economically profitable while safe mining operation, the stability of the open-pit slopes has been assessed using two-dimensional analyzes that are usually more conservative than a three-dimensional analysis (Lam e Fredlund, 1993;Albataineh, 2006;Li et al, 2009;Michalowski, 2010;Li et al, 2010;Akhtar, 2011;Wines, 2016;Azizi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Calibration of a Three-dimensional slope stability evaluation in Brazilian iron open pit mine

Torres

Dockendorff²,

Sotomayor

et al. 2021

Preprint

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It has historically been frequent among geotechnical practitioners, that the stability analysis of the slopes of an open pit is performed using a two dimensional section representing the highest and steepest walls within a certain geological setting. However, the literature shows that to predict rupture events in an open pit, a three-dimensional analysis would better represent the actual conditions, as the spatial distribution of the lithology and the structural features play an important role when defining the stability of the slopes. This paper presents the case study of an open it located in Brazil, which experienced instabilities between the years 2001-2019. An evaluation of the behavior of the open pit was performed by calibrating the strength parameters to represent the best documented rupture events. The three-dimensional model was made using the FLAC3D software. The results show that there is a good correlation between the results of the model and the reports of past instabilities. Finally, recommendations are presented for the inter-ramp angles for each lithology based on the calibrated stability analyzes performed. This work seeks to contribute to the knowledge in evaluation techniques for the three-dimensional behavior of open pits.

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Three dimensional slope stability analysis of open pit limestone mine in Rembang District, Central Java

Cited by 5 publications

References 5 publications

Application of cuckoo search method in 3D slope stability analysis for limestone quarry mine

Application of cuckoo search method in 3D slope stability analysis for limestone quarry mine

Pengaruh Nilai Toleransi Terhadap Stabilitas Lereng Menggunakan Metode Elemen Hingga 3d

Calibration of a Three-dimensional slope stability evaluation in Brazilian iron open pit mine

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