煤岩体蠕变-渗流耦合数值模拟  

Coal(rock) creep-seepage coupling numerical simulation

作　　者：何峰[1] 臧立岩[2] 张建生[2] 张立林[1] 

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [2]煤炭工业太原设计研究院,山西太原030001

出　　处：《辽宁工程技术大学学报（自然科学版）》2011年第6期806-809,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省教育厅基金资助项目(2008302);国家自然科学基金资助项目(10972096;50774046)

摘　　要：针对煤岩体具有流变性,蠕变是流变的主要形式问题,遇水后煤岩力学性质发生显著变化,造成煤岩体的变形和失稳,导致重大工程事故的发生。基于等效连续介质模型和流变学的理论,建立煤岩体流变场与渗流场耦合作用下的流变模型,推导相应的直接耦合总体控制方程,并应用于解决煤岩体层状边坡长期稳定性;基于FEPG软件平台,编制蠕变破裂-渗流耦合模块,分析煤岩体层状边坡各设定监测点随时间演化应力变化规律,以及其监测点水压随时间的变化,位移的变化规律,并对模型监测点在蠕变破裂和蠕变破裂-渗流耦合两种情况下的水压变化进行了对比分析,为煤岩工程的长期稳定性提供理论方法和实际预测依据。Coal（rock） has rheological property,creep is the main form;the mechanical properties of rock with water significantly changed,it is an important factor of water affected creep properties of rock.And causing coal（rock） mass deformation and instability,it lead to significant engineering accident.Based on equivalent continuum model and rheology of coal（rock） theory,establishes the rheological field and seepage field under the coupled action of rheological model,the equations of the corresponding directly coupled overall control equation,and applied to solve coal（rock） slope long-term stability;the layered FEPG software platform,compiled based on creep rupture-hydromechanical coupling module,analyzing coal（rock） slope each set of layered monitoring evolution over time stress variation,and its monitoring water pressure changing with time,the change rule of displacement,and the model of creep rupture in monitoring and creep rupture-hydromechanical coupling in two cases of water pressure changes and analyzed,for the long-term stability of the coal rock engineering provide theoretical methods and practical prediction basis

关 键 词：煤岩层状边坡 蠕变破裂 耦合流变数学模型 蠕变-渗流耦合 FEPG软件 水压 

分 类 号：O319.56[理学—一般力学与力学基础]