A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis and Reprofiling of Overburden Slope Failure in Lignite Mine of Surat District, Gujarat
This research paper presents the detail study of a slope failure occurred in lignite mine situated in Surat, Gujarat. The failure occurred at dump no 2 of the mines in the month of December, 2021. The failure zone of the dump was extended up to the length of 1400 m and 1000 m width. No fatalities were reported as the failure was very gradual and mine management were prepared for this large failure. The mine was investigated physically and samples were collected to know the exact cause of failure. It was found that the failure area consisted, mostly of clay type materials which are prone to failure when comes in contact with water. As per the rainfall record of the area, total annual rainfall of 1519 mm was received in 2021. The month of November, 2021 and December, 2021 received very low intensity rainfall for larger duration of the day. This low intensity rainfall did not form any rain cut in the slope mass, whereas, it percolated deep inside the dump mass. This percolation reduced the cohesive strength of the clay material present in the failure area. A proper reprofiling of the dump slope mass was suggested with the help of numerical modelling method. Stability analysis of the restructured dump slope mass proposed that the slopes can be considered as long-term safe for mining operations. However, there is always a scope of uncertainties present while working in the mining operations.
Analysis and Reprofiling of Overburden Slope Failure in Lignite Mine of Surat District, Gujarat
This research paper presents the detail study of a slope failure occurred in lignite mine situated in Surat, Gujarat. The failure occurred at dump no 2 of the mines in the month of December, 2021. The failure zone of the dump was extended up to the length of 1400 m and 1000 m width. No fatalities were reported as the failure was very gradual and mine management were prepared for this large failure. The mine was investigated physically and samples were collected to know the exact cause of failure. It was found that the failure area consisted, mostly of clay type materials which are prone to failure when comes in contact with water. As per the rainfall record of the area, total annual rainfall of 1519 mm was received in 2021. The month of November, 2021 and December, 2021 received very low intensity rainfall for larger duration of the day. This low intensity rainfall did not form any rain cut in the slope mass, whereas, it percolated deep inside the dump mass. This percolation reduced the cohesive strength of the clay material present in the failure area. A proper reprofiling of the dump slope mass was suggested with the help of numerical modelling method. Stability analysis of the restructured dump slope mass proposed that the slopes can be considered as long-term safe for mining operations. However, there is always a scope of uncertainties present while working in the mining operations.
Analysis and Reprofiling of Overburden Slope Failure in Lignite Mine of Surat District, Gujarat
Lecture Notes in Civil Engineering
Verma, Amit Kumar (editor) / Singh, T. N. (editor) / Mohamad, Edy Tonnizam (editor) / Mishra, A. K. (editor) / Gamage, Ranjith Pathegama (editor) / Bhatawdekar, Ramesh (editor) / Wilkinson, Stephen (editor) / Singh, Anand (author) / Roy, Sanjay Kr. (author) / Verma, Amit Kr. (author)
International Conference on Geotechnical Issues in Energy, Infrastructure and Disaster Management ; 2024 ; Patna, India
2024-12-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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