Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect

Abstract Reasonable design of the slopes of mining field is an important prerequisite for optimizing open-pit mine boundary, ensuring safe production and improving economic benefits of open-pit mines. This study took the open-pit coal mine coal mine in Block I of Thar coal field in Pakistan as the r...

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Main Authors: Lan Jia, Jiaqi Wang, Xueting Cai, Linhao Fang, Yonghai Ma, Zhixin Wang
Format: Article
Language:English
Published: Nature Portfolio 2024-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-024-53227-5
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author Lan Jia
Jiaqi Wang
Xueting Cai
Linhao Fang
Yonghai Ma
Zhixin Wang
author_facet Lan Jia
Jiaqi Wang
Xueting Cai
Linhao Fang
Yonghai Ma
Zhixin Wang
author_sort Lan Jia
collection DOAJ
description Abstract Reasonable design of the slopes of mining field is an important prerequisite for optimizing open-pit mine boundary, ensuring safe production and improving economic benefits of open-pit mines. This study took the open-pit coal mine coal mine in Block I of Thar coal field in Pakistan as the research background, based on the section morphology effect of slope stability and the occurrence characteristics of coal seam and weak layer, the section morphology of slope was optimized step by step from two-dimensional angle by using the rigid body limit equilibrium method. The three-dimensional numerical simulation method is used to analyze the three-dimensional spatial effect of slope stability and reveal the influence of the spatial geometry of the slope stability. The spatial morphology of the slope was optimized and the evolutionary mechanism of slope instability was revealed. By comparing the optimized slope morphology with the preliminary design and the slope morphology of the straight slope with equal flat plate, the economic benefits were further analyzed. The results showed that under the premise of meeting the safety reserve coefficient, compared with the preliminary design and the design of equal plate. The slope angle of the optimized section morphology was increased by 1° and 3° respectively, and the coal resource recovery was increased by 332 m2 and 1790 m2 respectively, and the economic benefits were $ 18,065,859 and $ 54,408,251 respectively. And the slope angle of the optimized spatial morphology was increased by 3° and 5° respectively, and the coal resource recovery was increased by 1188 m2 and 2726 m2 respectively, and the economic benefits were $ 72,082,808 and $ 108,417,368 respectively.
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spelling doaj.art-5b90832e62f546f4a980546a76749dcb2024-03-05T18:52:28ZengNature PortfolioScientific Reports2045-23222024-01-0114111410.1038/s41598-024-53227-5Study on morphology optimization of open-pit mine slope based on section and spatial morphology effectLan Jia0Jiaqi Wang1Xueting Cai2Linhao Fang3Yonghai Ma4Zhixin Wang5College of Mining, Liaoning Technical UniversityCollege of Mining, Liaoning Technical UniversityCollege of Mining, Liaoning Technical UniversityCollege of Mining, Liaoning Technical UniversitySino Sindh Resources Pvt LtdSino Sindh Resources Pvt LtdAbstract Reasonable design of the slopes of mining field is an important prerequisite for optimizing open-pit mine boundary, ensuring safe production and improving economic benefits of open-pit mines. This study took the open-pit coal mine coal mine in Block I of Thar coal field in Pakistan as the research background, based on the section morphology effect of slope stability and the occurrence characteristics of coal seam and weak layer, the section morphology of slope was optimized step by step from two-dimensional angle by using the rigid body limit equilibrium method. The three-dimensional numerical simulation method is used to analyze the three-dimensional spatial effect of slope stability and reveal the influence of the spatial geometry of the slope stability. The spatial morphology of the slope was optimized and the evolutionary mechanism of slope instability was revealed. By comparing the optimized slope morphology with the preliminary design and the slope morphology of the straight slope with equal flat plate, the economic benefits were further analyzed. The results showed that under the premise of meeting the safety reserve coefficient, compared with the preliminary design and the design of equal plate. The slope angle of the optimized section morphology was increased by 1° and 3° respectively, and the coal resource recovery was increased by 332 m2 and 1790 m2 respectively, and the economic benefits were $ 18,065,859 and $ 54,408,251 respectively. And the slope angle of the optimized spatial morphology was increased by 3° and 5° respectively, and the coal resource recovery was increased by 1188 m2 and 2726 m2 respectively, and the economic benefits were $ 72,082,808 and $ 108,417,368 respectively.https://doi.org/10.1038/s41598-024-53227-5
spellingShingle Lan Jia
Jiaqi Wang
Xueting Cai
Linhao Fang
Yonghai Ma
Zhixin Wang
Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
Scientific Reports
title Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
title_full Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
title_fullStr Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
title_full_unstemmed Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
title_short Study on morphology optimization of open-pit mine slope based on section and spatial morphology effect
title_sort study on morphology optimization of open pit mine slope based on section and spatial morphology effect
url https://doi.org/10.1038/s41598-024-53227-5
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