NUMERICAL ANALYSIS OF THE IGNITION OF AIR-METHANE EXPLOSIVE MIXTURES RELATED TO UNDERGROUND MINING ATMOSPHERES

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

News of the Tula state university. Sciences of Earth ◽

10.46689/2218-5194-2021-4-1-389-399 ◽

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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Numerical analysis of geotechnical parameters on subsidence due to underground mining

Underground Space Use. Analysis of the Past and Lessons for the Future ◽

10.1201/noe0415374521.ch38 ◽

2005 ◽

Author(s):

S Choi ◽

C Ryu ◽

Y Jeon ◽

D Cheon

Keyword(s):

Numerical Analysis ◽

Underground Mining ◽

Geotechnical Parameters

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Numerical Analysis of Double Plate Foundation Applied in Goaf

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.1305 ◽

2011 ◽

Vol 243-249 ◽

pp. 1305-1310

Author(s):

Yu Hua Lu ◽

Xu Xie ◽

Qing Jie Zhao

Keyword(s):

Numerical Analysis ◽

Underground Mining ◽

Strip Foundation ◽

Deformation Effect ◽

Positive Role ◽

Coal Resources ◽

Research And Design

With the development of society, the demand of coal resources is increasing. However, the deformation and damage of buildings above goaf, which caused by underground mining, is getting worse and worse. Therefore, research and design of anti-deformation of buildings above goaf have certain positive role to deal with problems caused by mining deformation. This paper mainly discusses the double plate foundation used in buildings above goaf, and compares the anti-deformation effect of double plate foundation and strip foundation based on numerical ansys of the both.

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