Study on danger of fault activation under potential excavation of coal pillar

in order to study the water inrush machanism and danger of the faut activation under the potenial excavation of the coa alla based on Fault /3 in Jinggezhvang Mine as an exampl ,the mechanies theoretical analysis and numerical s inulation analysis were appied to establish the mechanios model,mechanics crierion.,numerical analysis model and to analyze the factors affcted to the faut ctivation.Ajudgement was conducted on the danger of the Faut F3 activaion and fal a presuized water test of the borehole was applied to verfy the judgementresuts.The stucly showed that under the potential excavation of the coa pllarthe nain factors of the fault activation under the potential excavation of the ca illar would be the watery of the faultinelination of the faultfaultzone features,ocation ofthe fault and others.The activation index of Faut R3was-3.81×105and less than 0.The fut would not be activated and the conclusion was approved by the numerical sinuation analysis and the site pressurized water test of the borehole.