Open AccessNumerical simulation of fluid-solid coupling of stress failure characteristics of floor in coal mining face
Author(s) -
Weizheng Wu,
Zhonghua Wang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/766/1/012017
Subject(s) - inrush current , stage (stratigraphy) , stress (linguistics) , coal mining , coupling (piping) , front (military) , face (sociological concept) , computer simulation , mining engineering , coal , geotechnical engineering , geology , engineering , mechanical engineering , simulation , waste management , paleontology , social science , linguistics , philosophy , voltage , sociology , electrical engineering , transformer
In order to explore the characteristics of floor stress failure in the mining face under the action of non-uniform water pressure, a fluid-solid coupling model of non-uniform water-bearing area was established. FLAC-3D simulation software was used to simulate and analyze the changes in the initial mining stage, the sudden stress increase stage, the stress slow increase stage, and the stable stress stage during the mining process of the working face, and the failure characteristics of the floor were analyzed. It reveals the reasons why water inrush accidents are likely to occur at the front of the working face, which has a certain significance for understanding the mechanism of water inrush from the floor.