Research of Influence of Faults on Floor Failure Law and Water Inrush Based on Numerical Simulation
YANG Jing
WANG Xinxiang
YANG Songlin
SHI Xiaoguang
WANG Jilin
Abstract：In this paper,deep research was made on the influence of faults upon the stress redistribution,deformation failure law and water inrush of the floor rock stratum in the mining process of coal seams by means of numerical simulation and according to the combined action of mine ground pressure and groundwater pressure and through the simulation of the stress distribution state and deformation failure course of floor rock stratum in coal mining. Research results indicated that when fault existed near the coal wall of the gob, the stress distribution of the floor rock stratum in front of and behind the working face assumed remarkable heterogeneity,its stress variation was much more severe than that of the intact rock stratum,the stress was mainly concentrated near the coal wall,the severe stress variation caused the deformation and failure of the floor rock stratum much easily,the existence of fault and the secondary structural pane near it also aggravated the expansion of floor and surrounding rock fissures in coal mining process,the shorter distance from fault to the working face,the easier the occurrence of water inrush.
Keywords：faultnumerical simulationfloor water inrushdeformation failurestress concentration
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 29-33 )