采动作用下水对断层带岩体损伤活化影响分析  

Influence of Rock Damage and Excitation within Fault Zone by Water under Mining Influence

作　　者：于秋鸽 张华兴[1,2] 邓伟男[1,2] 张刚艳[1,2] YU Qiu-ge;ZHANG Hua-xing;DENG Wei-nan;ZHANG Gang-yan(Mining Institute,China Coal Research Institute,Beijing 100013,China;Coal Mining & Designing Department,Tiandi Science & Technology Co.,Ltd.,Beijing 100013,China)

机构地区：[1]煤炭科学研究总院开采研究分院,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤矿开采》2019年第1期153-156,共4页Coal Mining Technology

基　　金：国家自然科学基金资助项目(51604151);国家自然科学基金面上资助项目(51874177);天地科技开采设计事业部青年基金(KJ-2018-TDKCZL-10)

摘　　要：采动影响下的断层活化是损伤累积作用下断层带岩体原始裂隙发育扩展的结果并与断层带岩体性质密切相关。为了研究断层原生水的存在对断层活化的影响,根据断裂力学建立水压作用下断层带岩体裂隙损伤发育力学模型,分析了断层水对断层活化的影响并利用FLAC^(3D)内置fish语言进行固液耦合数值模拟验证。研究结果表明:断层水的存在将会导致断层带岩体裂隙面正应力降低,裂隙更容易发育扩展而增加了采动影响下断层活化的可能性。Fault excitation under mining was the results of primary fracture development within fault zone under damage accumulation,and closely related with fault rock mass character.In order to study the influence that fault primary water to fault excitation,fracture development mechanics model under water pressure of fault zone rock was built,the influence that fault water to fault excitation and then solid and fluid coupling simulated verified by Fish language of FLAC^3D software,the results showed that the normal stress of fracture would be decreased as fault water,and then fracture would expanding easily and the feasibility of fault excitation under mining influence was increased.

关 键 词：断层活化 断层原生水 裂隙损伤发育 固液耦合 岩体性质 

分 类 号：TD313[矿业工程—矿井建设]