地下水
地下水
지하수
GROUNDWATER
2014年
4期
55-57
,共3页
邯郸地区%土壤入渗规律%数值模拟方法%Van Genuchten模型
邯鄲地區%土壤入滲規律%數值模擬方法%Van Genuchten模型
함단지구%토양입삼규률%수치모의방법%Van Genuchten모형
Handan area%soil water infiltration regularity%numerical simulation method%Van Genuchten Model
在对土壤入渗理论进行总结和分析的基础上,依据邯郸市平原区的水文水情的基本特点,选定2~3处地点进行实验,完成了静态数据的收集和动态数据的观测,确定了实验区土壤质地类型、土壤容重等物理特性,结合实验测定的饱和导水率K、土壤水分特征曲线θ( h)推算非饱和导水率K(θ)、扩散率 D(θ)等土壤水分运动参数。运用上述数据对Van Genuchten模型加以改进,并运用改进后的模型对实验中的水分变化过程进行数值模拟。结合实测成果和数值模拟成果,对邯郸市平原区已选定实验点土壤水入渗规律进行分析。
在對土壤入滲理論進行總結和分析的基礎上,依據邯鄲市平原區的水文水情的基本特點,選定2~3處地點進行實驗,完成瞭靜態數據的收集和動態數據的觀測,確定瞭實驗區土壤質地類型、土壤容重等物理特性,結閤實驗測定的飽和導水率K、土壤水分特徵麯線θ( h)推算非飽和導水率K(θ)、擴散率 D(θ)等土壤水分運動參數。運用上述數據對Van Genuchten模型加以改進,併運用改進後的模型對實驗中的水分變化過程進行數值模擬。結閤實測成果和數值模擬成果,對邯鄲市平原區已選定實驗點土壤水入滲規律進行分析。
재대토양입삼이론진행총결화분석적기출상,의거함단시평원구적수문수정적기본특점,선정2~3처지점진행실험,완성료정태수거적수집화동태수거적관측,학정료실험구토양질지류형、토양용중등물리특성,결합실험측정적포화도수솔K、토양수분특정곡선θ( h)추산비포화도수솔K(θ)、확산솔 D(θ)등토양수분운동삼수。운용상술수거대Van Genuchten모형가이개진,병운용개진후적모형대실험중적수분변화과정진행수치모의。결합실측성과화수치모의성과,대함단시평원구이선정실험점토양수입삼규률진행분석。
With the knowledge of soil infiltration theory and basic hydrological conditions of plain in Handan, this paper conducts experiments in 3 places to get static data and dynamic observation data, based on which physical properties like the soil type and soil capacity of the studied area are clarified. Then, parameters for water movement in soil like the unsaturated hydraulic conductivity K( ) and diffusivity D( ) are calculated according to saturated hydraulic conductivity K and soil moisture characteristic curve . Furthermore, Van Genuchten Model is improved with these experimental data and then is used to make numerical simulation on the soil quantity variation. At last, the soil infiltration regularity of plain in Handan is analyzed with the data from field research and numerical simulation.