Numerical analysis of deep hole multi-stage cut blasting of vertical shaft using a continuum-based discrete element method

2021 ◽  
Vol 14 (12) ◽  
Author(s):  
Chenxi Ding ◽  
Renshu Yang ◽  
Changda Zheng ◽  
Liyun Yang ◽  
Songlin He ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Vertical Shaft ◽  
Deep Hole ◽  
Multi Stage ◽  
Element Method

ANALYSIS OF CONTROLLED COAL DISCHARGE AT MINING OF THICK FLAT COAL SEAMS USING SELF-CAVING TECHNOLOGY

2021 ◽  
Vol 4 (1) ◽  
pp. 389-399
Author(s):  
S.V. Klishin ◽  
Keyword(s):  
Numerical Analysis ◽  
Discrete Element Method ◽  
Underground Mining ◽  
Three Dimensional ◽  
Discrete Element ◽  
Flow Patterns ◽  
Coal Extraction ◽  
Coal Seams ◽  
Element Method

By the Discrete Element Method in a three-dimensional formulation, a numerical analysis of the areal coal discharge during the underground mining of thick flat coal seams using self-caving technology has been carried out. The kinematic flow patterns of mined rock depending on the number and location of the outlet openings are given, the zones of their mu-tual influence are determined. The change of coal extraction indicators depending on the num-ber of outlets and the distance between them are demonstrated.

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