巷道导水构造体围岩温度场-渗流场影响因素分析  

Analysis of the Influencing Factors of the Temperature Field-Seepage Field of Roadway Surrounding Rock of Roadway Water-conducting Structure

作　　者：余正良 赵敏[1] 

机构地区：[1]四川省地质工程勘察院

出　　处：《现代矿业》2018年第1期100-106,共7页Modern Mining

基　　金：国家重点基础研究发展计划(973计划)项目(编号2013CB227903);国家自然科学基金项目(编号:4147226851374203)

摘　　要：在导水构造体发生突水前夕,巷道围岩温度场和裂隙渗水的水温均出现异常,是由于深部的高承压热水进入导水构造体内,将热量传递给周围围岩,使得围岩温度场出现异常。在详细分析导水构造体渗透特征和热传导特性的基础上,通过有限元COMSOL Multiphysics数值模拟软件分别对渗透率、不同岩性组合和孔隙度对巷道围岩温度场-渗流场的影响进行了讨论。研究表明:热传导对于围岩温度场的影响远小于热对流运动,通过监测井巷围岩温度场可对不良地质构造体突水进行预测和预报。The abnormal phenomenons of the temperature-field of roadway surrounding rock and the temperature of fissure water of roadway surrounding rock are both appeared before the water inrush phenomenon of water-conducting structure is happened,which is due to the deep high pressure hot water entering the water-conducting structure,the heat energy is transferred to the surrounding rock,so the abnormal phenomenon of the temperature filed of roadway surrounding rock is appeared. Based on analyzing the infiltration characteristics and heat transfer characteristics of water-conducting structure,the influence of permeability,different lithology combination and porosity to the temperature filed-seepage filed of roadway surrounding rock is discussed in detail based on the finite element COMSOL Multiphysics numerical simulation software. The study results show that influence of heat conduction to surrounding rock temperature filed is much smaller than that of thermal convection,the goal of water inrush prediction and forecast of poor geological structure can be realized by monitoring the temperature filed of roadway surrounding rock.

关 键 词：导水构造体 温度场 渗流场 影响因素 数值模拟 

分 类 号：TD745[矿业工程—矿井通风与安全]