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Influence of adjacent undercutting line positions on surrounding rock stability in block caving [PDF]
Scientific ReportsIn the block caving mining method, deformation and collapse can occur in roadways due to vertical stress concentration in front of the undercutting line.
Yong Cao, Xinzhu Hua, Heng Zhang
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Evolution of airblast induced by roof collapse based on LBM-DEM [PDF]
Scientific ReportsAirblast is a common safety hazard in block caving. It occurs when the roof of a goaf collapses suddenly over a large area, causing rapid compression and release of air, resulting in high-speed airflow that can cause injury and equipment damage.
Mingtao Jia +4 more
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Reassessing Janssen's equation for cave stress estimation in block cave mining. [PDF]
Min Technol (Abingdon)Cave mines operating at greater depths are faced with higher draw column heights, typically ranging from several hundred metres to over one kilometre. This results in significantly higher cave stress on the production level, making reliable stress estimation critical for assessing long-term stability. The current approach to estimating cave stresses in
Li Y, Elmo D.
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Enhancement of the technology of mining steep ore bodies applying the “floating” crown [PDF]
E3S Web of Conferences, 2021 When mining ore bodies in Kryvyi Rih iron ore basin, underground mines apply open stoping or bulk caving systems in proportion of 55% to 45%. Most of underground mines prefer stoping with pillar caving.
Pysmennyi Serhii +4 more
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Physical model simulation of block caving in jointed rock mass [PDF]
International Journal of Mining and Geo-Engineering, 2022 Incorrect estimation of undercut dimensions in the block caving method can lead to the cessation of caving operations and loss of a large portion of deposits. Numerical modeling is one of the methods for determining the minimum caving span. Numerical and
Behnam Alipenhani +2 more
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Block Caving Mining Method: Transformation and Its Potency in Indonesia
Energies, 2022 The block caving mining method has become increasingly popular in the last two decades. Meanwhile, Indonesia has several potential ore bodies which have not yet determined suitable mining methods.
Sari Melati +7 more
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Review of unstable falling of roof rock blocks under dynamic disturbance
工程科学学报, 2023 Roof caving has been the main threat to the safety of underground mining, in which the caving of roof rock blocks is particularly concerning. The secondary structural planes of surrounding rocks around underground excavations, such as roadways and stopes,
Wancheng ZHU +5 more
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Energies, 2023 China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost.
Dongdong Chen +9 more
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Reopening and closure of a block cave [PDF]
MassMin 2020: Proceedings of the Eighth International Conference & Exhibition on Mass Mining, 2020 Palabora is a deep, hard rock, block cave in South Africa that has been in operation since 2002. After the open pit reached it maximum depth at 825 m, the mining method was changed from open pit to block caving. The first block cave lift (Lift I) was established 400 m below the open pit at a depth of 1,200 m and has been in production since 2002, with ...
Hans-Dieter Paetzold +2 more
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Meitan kexue jishu, 2023 At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design ...
Yao CUI +3 more
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