Abstract
Chau Thoi stone quarry is an old open pit mine in Binh Duong province of Vietnam, where the cut slopes are the sources of prone rockfall. Several rockfalls have occurred in this area and rockfall threatens the tourists. This case is also typical of a number of stone mines in the region. In the study, geological measurements are taken to obtain the field condition with the focus on the rock fractures. Based on the data, kinematic analysis is carried out using the DIPS software for the identification of rock slope failures. The results are then used in the analysis of rockfall. Herein, rockfall simulations are carried out by the rigid body method using the RocFall software for the analysis of bounce height, maximum runout distance, trajectories, velocity, and intensity of falling rock block. Observation at the site may be used for the back analysis. The result shows the modes of slope failures that may occur and sites that are prone to failure. The model parameters can be investigated. The vulnerable distance of rock traveling, bounce height and trajectories, velocity, and energy of rock block will be in the results. The result of this study may be useful for selection and designing protection measures and for the planning of land use hazard areas for further development. The study will be useful reference for other stone mines in the region for both exploiting work and closure of the mine.
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Acknowledgments
The author thanks Rocscience Inc. for providing the use of DIPS and RocFall software. Thanks also to my cousin, Mr. Nguyen Manh Hung, and my colleague, Dr. Nguyen Trung Kien, for hel** me to take the newest photos at the site of study area. The author would like to thank the reviewers for their very valuable corrections and comments.
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Tuan, N.Q. (2021). Analysis of Rock Slope Failure and Rockfall for Preliminary Hazard Assessment of the Cliff at Chau Thoi Quarry. In: Tien Bui, D., Tran, H.T., Bui, XN. (eds) Proceedings of the International Conference on Innovations for Sustainable and Responsible Mining. Lecture Notes in Civil Engineering, vol 108. Springer, Cham. https://doi.org/10.1007/978-3-030-60269-7_12
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