Results 1 to 10 of about 33,183,762 (290)

Numerical modelling of loose top coal and roof mass movement for a re-mined seam using the top coal caving method. [PDF]

PLoS ONE, 2023
The re-mined face using top coal caving system is the most applicable method for recovering the remaining reserves of a previous partially-mined thick coal seam.
Shuai Wang, Chunhua Zhang, Feng He, Yu Yang   +3 more
doaj   +3 more sources

Study on formation mechanism of mud-inclusion-type underground debris flows using natural caving method. [PDF]

Sci Rep
This study aimed to investigate the formation mechanism of the mud-inclusion-type underground debris flows of natural caving underground mines. The characteristics of fine moraine particles flowing through the coarse-grained ore bed were used to analyze ...
Niu X, Hou K, Bao G, Zhe Y.
europepmc   +2 more sources

Prediction method of surface subsidence induced by block caving method based on UAV oblique photogrammetry. [PDF]

Sci Rep
Unmanned Aerial Vehicle (UAV) oblique photogrammetry has been extensively employed in mining, albeit predominantly for reconstructing three-dimensional scenes and detecting changes within mining sites, lacking predictive capabilities.
Ling W, Feng X, Wang L, Zhu Z, Wang S, Fu H, Zhang S, Zhao Y.   +7 more
europepmc   +2 more sources

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, Ridho Kresna Wattimena, David Prambudi Sahara, Syafrizal, Ganda Marihot Simangunsong, Wahyu Hidayat, Erwin Riyanto, Raden Roro Shinta Felisia   +7 more
doaj   +2 more sources

Techno-Economic Feasibility of the Longwall Top Coal Caving Method Based on the FTCD Index: A Parametric Case Study in India

Energies, 2021
An extraction method for deep-seated thick seam deposits by underground mining with high resource recovery has remained a great challenge for Indian mining engineers, whereas the longwall top coal caving (LTCC) method has evolved as an effective method ...
N. Balasubrahmanyam, G. Budi
exaly   +2 more sources

Development of 3D top coal caving angle model for fully mechanized extra-thick coal seam mining

International Journal of Mining Science and Technology, 2022
During high-intensity, fully mechanized mining of extra-thick coal seam, the top coal would cave to a certain 3D form. Based on the data collected during drilling, a 3D model of top coal caving surface space was established to determine the relationship ...
Hongfei Duan, Lijuan Zhao, Haiyan Yang, Yao Zhang, Hongchun Xia   +4 more
doaj   +3 more sources

Prediction of the caved rock zones’ scope induced by caving mining method

PLOS ONE, 2018
Critical medium column theory has typically been used to predict the scope of caved rock zone (CRZ) caused by caving mining method. It is essential to understand the distribution laws of lateral pressure induced by caving mining method with different dipping angles.
Fengyu Ren, Yang Liu, Jianli Cao, Rongxing He, Yu Fu, Yanjun Zhou, Huan Liu   +6 more
openaire   +5 more sources

Raise Caving—A Hybrid Mining Method Addressing Current Deep Cave Mining Challenges

BHM Berg- und Hüttenmännische Monatshefte, 2022
AbstractCave mining progresses to depths exceeding 1000 m and ore bodies situated in competent and strong rock masses are nowadays extracted by different cave mining methods. Widely applied caving methods in massive deposits are block and panel caving, inclined caving, and sublevel caving.
Tobias Ladinig, Horst Wagner, Markus Karlsson, Matthias Wimmer, Michal Grynienko   +4 more
openaire   +2 more sources

Study on the Effect of the Undercut Area on the Movement Law of Overburden Rock Layers in the Block Caving Method

Applied Sciences (Switzerland)
We chose to study the bottom structure stress evolution law in the process of undercut area advancement via the block caving method, reveal the influence law of the undercut rate on the effect of the ore body caving process, and assess the floor stress ...
Xiushan Qin
exaly   +2 more sources

Study of automated top-coal caving in extra-thick coal seams using the continuum-discontinuum element method

International Journal of Rock Mechanics and Minings Sciences, 2019
In order to investigate top-coal drawing regularity and automated top-coal caving technology in extra-thick coal seams, an approach coupling the particle element and the block element is presented based on the continuum-discontinuum element method (CDEM).
Jinchao Yue, Qunlei Zhang, Huamin Li
exaly   +2 more sources