Results 21 to 30 of about 1,012,080 (297)
Analytical Model Determining the Optimal Block Size in the Block Caving Mining Method [PDF]
, 2015 Nowadays along with population growth, industry development, consumption of mineral resources and the fact that the reserves on hand are running out, the depth of surface and underground mines for further exploitation are increasing. During recent years,
Someehneshin, Javad +2 more
core +1 more source
Optimizing Stope Boundary and the Undercut Level in Block Cave Mining [PDF]
Muhandisī-i manābi̒-i ma̒danīAs near-surface mineral resources are being depleted, mining operations are focused on deepening. Rising environmental concerns prefer underground mining methods because their footprint is less than that of surface mining methods.
M. Shami-Qalandari +2 more
doaj +1 more source
Leinster cave seismic risk management: a block cave solution [PDF]
Proceedings of the Fourth International Symposium on Block and Sublevel Caving, 2018 On 31 October 2013, production at Leinster’s sublevel caving (SLC) operations were suspended following a significant mining-related seismic event that caused unforeseen levels of damage to underground workings. The event occurred when mining was taking place in an area known as the 11 Level Fold, approximately 1,100 m below surface.
Michael Hopkins +2 more
openaire +1 more source
Influence of moisture content on the shape of isolated movement zone in mesoscale
工程科学学报, 2018 Block caving mining has the advantages of large production capacity, safe operation, low mining cost, and easy organization and management. Therefore, it is considered as one of the natural alternatives to the current open cut mining.
LI Tao +4 more
doaj +1 more source
Shock and Vibration, 2021 The instability of extraction structure under the undercut space in the block caving stope presents specific characteristics: rib spalling and floor heave in ore-loading roadway and collapse of major apexes.
Zhi-Yuan Xia, Zhuo-Ying Tan
doaj +1 more source
Applied Sciences, 2021 Slope failure induced by sublevel caving mining is a progressive process, resulting in the large deformation and displacement of rock masses in the slope. Numerical methods are widely used to investigate the above phenomenon.
Jingzhi Tu +3 more
doaj +1 more source
Grasberg Block Cave mine: cave planning and undercut sequencing [PDF]
Proceedings of the Fourth International Symposium on Block and Sublevel Caving, 2018 Construction and development of the Grasberg Block Cave (GBC) mine continues to progress, with undercutting commencing in late 2018. As an experienced operator of block cave mines, PT Freeport Indonesia (PTFI) works to improve the planning and execution of undercutting.
Drew Beard, Charles Brannon
openaire +1 more source
Stress modelling using cellular automata for block caving applications [PDF]
, 2022 In underground mining, rock mass stress is commonly modeled as a continuum. However, in block cave mining discrete modelling should be used to properly represent the stress over the extraction level in the broken column where there are high rock columns ...
Castro Ruiz, Raúl Luis, Gómez, René
core +1 more source
Advances in Civil Engineering, 2021 To reveal the critical factors of the main roof influencing stability of surrounding rocks of roadways driven along goaf in fully-mechanized top-coal caving faces, this paper builds a structural mechanics model for the surrounding rocks based on ...
Hong-Sheng Wang +3 more
doaj +1 more source
Meikuang Anquan, 2021 In order to find out the reason of large area roof cutting and caving in abandoned roadway during the mode of mining one side pillar and three-roadway arrangement of 202 working face in Daning Coal Mine, based on the field observation and theoretical ...
HAN Shuyi, YANG Shuangsuo, BAI Yunlong, MA Jinmin, SHI Jinsong, HAN Junxiao, CHENG Lingyu
doaj +1 more source