Hebei Provincial Key Lab of Mine Disaster Prevention and Control.North China lnsttute of Science and Technology China University of Mining and Technology (Beijing)

为研究防水煤柱挖潜开采影响下断层活化突水机理及危险性,以荆各庄矿F3断层为例,采用力学理论分析及数值模拟分析,建立了煤柱挖潜开采影响下断层活化力学模型、力学判据、数值分析模型,分析了断层活化影响因素,对F3断层活化危险性进行了判定,最后利用钻孔压水试验验证了判定结果。研究表明:煤柱挖潜开采影响下断层活化的主要因素有断层的富水性、断层倾角、断层带特性、断层所处的位置等,F3断层活化指数为-3.81×105,小于0,断层不会出现活化,此结论通过数值模拟分析及现场钻孔压水试验得到验证。

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.

国家自然科学基金资助项目(51204069)；河北省自然科学基金资助项目(E2013508123)；河北省矿井灾害防治重点实验室开放基金资助项目(KJZH2013K01)；