Article
Engineering, Environmental
Lichun Jiang, Gege Wang, Luanluan Xue, Lijuan Jia
Summary: Effective slope stabilization measures in deep open-pit mines are crucial for ensuring safety and economic benefits. This study proposes an innovative method for slope remediation based on field investigations and numerical simulations. The method involves creating an in situ foundation embankment and a restraining embankment to stabilize the slope. The safety factor of the embankment slope is analyzed, and the proposed method is validated using field monitoring results from the Lishan Iron Mine.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Energy & Fuels
Phu Minh Vuong Nguyen, Aleksander Wrana, Sylwester Rajwa, Zenon Rozanski, Robert Fraczek
Summary: In Poland, the mining waste dump sites from underground coal mines may experience landslides after heavy rainfall, leading to labor costs and safety risks. Thus, conducting slope stability analysis and evaluating reinforcement measures are necessary.
Article
Environmental Sciences
Guozhen Zhao, Jiaxin Chen, Lihong Zhang, Shuai Wang, Yiqing Lyu, Guangyao Si
Summary: This study focuses on addressing the issues of spontaneous combustion and slope instability at a coal mine waste dump in Ximing Mine, China. Slope restoration and environmental treatment were conducted using shotcrete, deep hole grouting, and external soil spray seeding technology with multiple soil fixation measures. The stability of the repaired dump was analyzed using LiZheng Slope Stability Analysis Software, and the displacement and stress of high-risk zones were assessed using MIDAS GTS NX Software. The findings provide valuable insights for slope restoration and evaluation.
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Chengzhong Wang, Shuangjian Niu
Summary: This paper uses the four grades slope of Yunmao Expressway in China as an example to study the stability of reinforced weathered rock slope through engineering monitoring and numerical simulation. The results show that the reinforcement method can effectively guarantee the stability of the slope.
FRONTIERS IN MATERIALS
(2023)
Article
Environmental Sciences
Alseny Bah, Jie Jin, Andrea O. Ramos, Yang Bao, Mengyu Ma, Feihu Li
Summary: Global mining activities generate millions of tons of toxic-bearing mine tailing wastes annually, leading to ecological and environmental risks. Geopolymerizing a mixture of toxic-bearing mine tailings and coal fly ash effectively immobilizes arsenic species and heavy metals, with the resulting geopolymers showing high compressive strengths and potential as low-carbon building materials. Leaching tests demonstrate high immobilization efficiency towards arsenic, and microstructural analyses suggest key roles of specific compounds in immobilizing toxic elements in the geopolymer matrixes.
Article
Engineering, Geological
Lorenzo Brezzi, Alberto Bisson, Davide Pasa, Simonetta Cola
Summary: Large number of landslides in North-Eastern Italy lead to significant economic losses. Floating composite anchors are a low-cost and innovative technique for slope stabilization, offering a more financially sustainable solution.
Article
Geosciences, Multidisciplinary
Ogbonnaya Igwe, Chinero Nneka Ayogu, Raphael Iweanya Maduka, Nnadozie Onyekachi Ayogu, Tochukwu A. S. Ugwoke
Summary: This paper presents the poor safety conditions of dump slopes in Nigerian mines through laboratory tests and numerical simulation. It reveals that high slope height and angle, as well as excessive material saturation caused by high seasonal rainfalls, can compromise the stability of the waste dumps. The authors advocate recycling and reusing waste rocks as engineering materials, particularly for tailing dam structures.
Article
Geosciences, Multidisciplinary
Xingdong Zhao, Yifan Zhao, Wenlong Yu
Summary: The stability and design optimization of the north open-pit (323N) landslide and the south open-pit (323S) slope in the Tanjianshan Gold Mine were studied. A large landslide occurred on the east side of 323N on September 14, 2020, posing a severe threat to the mine's safety production. To prevent a similar slide in 323S, the stability of the final slope of the initially designed open-pit in 323N was estimated using the limit equilibrium method. The results validated the effectiveness of the limit equilibrium method in slope stability analysis of the Tanjianshan Gold Mine.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Computer Science, Artificial Intelligence
Mingliang Li, Kegang Li, Qingci Qin, Rui Yue
Summary: This paper proposes an intelligent slope stability prediction method based on the improved pelican optimization algorithm (IPOA) and the optimization random forest (RF) algorithm to reduce disasters and accidents caused by slope instability. The paper performs exploratory data analysis (EDA) and establishes a high-quality data set and an index system for slope stability prediction. The results show that the prediction model based on improved IPOA and RF algorithms is reliable and effective, with an accuracy of up to 90.4%.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Computer Science, Interdisciplinary Applications
Z. L. Zhang, X. L. Yang
Summary: This paper develops a unified analytical framework to consider the local and global instability of a compound slope and provides a more rigorous solution for stability assessment. Through a hybrid optimization of the objective function, the critical safety factor and slip surface can be obtained. The results show good capability in implementing stability analysis and reveal the influence of slope geometry, soil strength, and external excitation on slope stability and failure pattern.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Geochemistry & Geophysics
Xuan Zhang, Chun Zhu, Zinan Li, Wansheng Ling, Faming Zhang
Summary: This research focused on the Langjia landslide in Qinghai Province of China to explore the failure mechanism and mode of deep relaxation rockslide in cold and arid areas of the plateau. The main precondition for the landslide was found to be deep relaxation tension cracks, triggered by strong weathering and disintegration of argillaceous cemented conglomerate on the sliding surface. The influence of rainfall, snow melting, and temperature accelerated the development of cracks and weathering process, leading to the formation of a sliding surface of mud rock with gravel.
Article
Geosciences, Multidisciplinary
Juyu Jiang, Huiwen Yang, Lanzhu Cao, Dong Wang, Laigui Wang, Zhengzhao Jia, Ye Lu, Shuai Di
Summary: This study calculates and determines the foundation bearing capacity and ultimate pile height of a waste dump, redefines the concept of foundation bearing capacity, and proposes a method for determining the ultimate pile height based on the slope angle. It is found that the sliding moment increment caused by waste increase is proportional to the pile height increment, and the anti-sliding moment increment is proportional to or correlated with the pile height increment. The slope angle of the waste dump decreases with the increase of soft bedrock thickness.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Geological
Bastian Van den Bout, Luigi Lombardo, Ma Chiyang, Cees van Westen, Victor Jetten
Summary: The research introduces an iterative method for finding progressive slope failure surfaces while considering lateral forces due to weight of the fractured failure material. The method performed well in predicting smaller failures, but ellipsoid sampling methods proved to be more robust for larger slope failures. Comparison with other free and open-source methods showed complex variation in failure surface patterns for the 2009 Messina event, highlighting the potential of the method to provide catchment-scale deterministic failure volume and geometry for future disasters.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Environmental
Song Jiang, JinYuan Li, Sai Zhang, QingHua Gu, CaiWu Lu, HongSheng Liu
Summary: This study establishes a fast and accurate landslide risk prediction model for open-pit mine dumps under the effect of heavy rainfall based on machine learning (ML). The GBRT model predicts the safety factors of open-pit mine dumps slope under the effect of heavy rainfall, which is of great significance for early warning of landslide risk in open-pit mine dumps.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Wooyoung Na, Changhyun Jun, Sang Yeob Kim
Summary: This study focuses on evaluating the influence of different rainfall patterns on slope stability and compares it with an actual landslide incident that occurred in Korea in 2011. The study found that models considering abrupt rainfall intensity can more accurately capture the timing of landslide occurrences. Therefore, the appropriate adoption of a rainfall distribution model should be highlighted for landslide prediction.
