水力耦合作用下煤变形及渗透率响应规律研究OA北大核心CSTPCD
Study on deformation characteristics and permeability response of coal under hydro-mechanical coupling
煤层注水过程中,应力与水压产生耦合作用使煤体形变,影响煤岩渗流.为探究注水渗流过程中煤岩体积应变和渗透特性演化规律,利用岩石力学试验机,对煤岩开展水力耦合渗流试验,得出应力对煤岩渗透率和体积应变特征的影响规律,从而探究水压影响下煤岩体积应变和渗透特性演化规律.试验结果表明:渗透率对于体积应变存在着明显的响应规律,通过数据拟合得到煤岩渗透率和体积应变存在指数函数关系;恒定水压试验中,煤岩渗透率呈现先减后增的趋势,此过程试件经历了由压缩到扩展的过程,…查看全部>>
During the process of coal seam water injection,the coupling effect of stress and water pressure causes deformation of the coal,which affects the seepage.To explore the evolution law of the volume strain and permeability characteristics of coal during the seepage process of water injection,rock mechanics testing machine is used to carry out hydraulic coupling seepage test of coal.The influence law of stress on the permeability and volume strain characteristi…查看全部>>
王智欣
陕西德源府谷能源有限公司 三道沟煤矿,陕西 府谷 719400
矿山工程
煤层注水流固耦合围岩应力孔隙水压体积应变渗透率
coal seam water injectionfluid-solid couplingsurrounding rock stresspore water pressurevolume strainpermeability
《煤矿安全》 2024 (7)
51-58,8
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