Numerical Simulation on Instability Mechanism of Room Mining Gob
LIN Huili
Abstract：In this paper, analysis was carried out on the instability form of the gob and research was made on the instability mechanism of the gob by numerical simulation in order to recognize the instability mechanism of the shallow buried room-mining gob. The results showed that in the overlying strata structures of the shallow buried room-mining gob, the thick overburden and thin bedrock were widely distributed and had the largest harmfulness. When the width of the coal room and gob was all relative small, the coal pillar destruction and instability occurred firstly and the gob roof could remain stable, but the coal pillar could not support the roof after its destruction. When the gob reached a certain overhanging area, it will lead to the cutting-off caving. Based on the results of numerical simulation, the corresponding control scheme for the gob was proposed.
Keywords：room mininggobstabilityinstability formroof caving
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 72-74 )