文档介绍：摘要摘要包气带水分运动是自然界水循环的重要组成部分,它促进了大气降水、地表水与地下水的水力联系。但是包气带结构的变化对其水分运动产生一定的影响, 尤其对复垦土地而言,水分在充填结构包气带中的运动具有新的特点。在查阅国内外土壤水分运动理论和研究成果的基础上,采用理论分析和模拟试验相结合的方法,、,测定土壤、粉煤灰、煤矸石的粒级配比、饱和含水率和非饱和导水率;利用基质势与含水率的关系标定了三种物质的水分特征曲线,并计算其水分扩散度和容水度等水分运动的参数。通过水分入渗试验,分析了湿润锋、累积入渗量随时间的变化特征,分析了水分入渗的影响因素。同时,利用充填结构模型,模拟研究了大气降水、蒸发、地下水位变化等条件下充填结构包气带的水分运动和分布规律。此外,依据Richards基本方程建立二层结构包气带水分运动的数学模型,利用、蒸发、地下水位变化等条件下的一维垂向水分运动特征。因此,以上研究为深入开展充填结构包气带水分运动提供了参考依据。图[80】表[20】参[75】关键词:包气带;充填结构;水分运动;水分参数;数值模拟 Abstrac=t Abstract Unsaturated moisture takes an important part in thenatual water cycle,which promotes the hydraulic connection among atmospheric precipitation,surface water and ,tO some certainextent,the moisture movement has been affected by the structural alteration inunsaturated ;there are new characteristics in the moisture movement and water transformation interms of reclamation soil. Based on consulting thetheory of moisture migtation and research results from scientificpapers at home and abroad,the paper was used methods oftheoretical analysis tOinvestigate moisture movement,coupled with themethod ofsimulation ,the device models about soil·fly ashandsoil-gangue were designed. Furthermore,the parameters offilling materials and soil were measured,including particles size ratio,saturated hydraulic conductivity,unsaturated hydraulic moisture characteristic curves ofsoil,fly ashandcoalgangue were calibrated with the relationship between matric potential and water content,and moisture capacity and moisturer diffusivity were addition,the water infiltration tests were carried out bycylindrical models,and therelationship among wetting front,cumulative infiltrationand infiltration time were the same time,the processes of moisture movement in the unsaturated zone were quantitatively described and theinfluencing factors were ,the tests were researched on thediscipline ofmoistu