The Study Of Water And Heat Coupling Experiment In Snowmelt Processing

Snowmelt water is the very important resources in the arid and semi-arid regions, and playing an extremely important role in rational utilization of water resources.However,When the temperature keep increasing and the rainfall in spring, sharp melting snow will cause floods, destroyed parts of farmland, block the traffic, threatening the lives and property of the people, when it occurs in the mountains it will cause an avalanche, landslides and other natural disasters. Considering the water resources management and flood control perspective, accurate simulation of snowmelt runoff is very important, and the basis of correctly calculate and forecast is the hydrothermal migration and the coupling mechanism in melting process.This paper takes JunTang River Basin watershed in northern slope of TianShan Mountain as the research area, combines the field observation and indoor simulative experiment method to study the hydrothermal migration and the coupling mechanism in melting process. This paper introduces and establishes the Coupled model of water and heat in the melting process. Then, observes the water and heat transport in the melting process in field. At the same time, simulates the real-time water and heat transport in the melting process in indoor experiment.Finaly , analysis and contrast the field observation data and simulative experimental data. The results showed that: (1) field under natural conditions, soil temperature and soil moisture in each layer depth exists significant correlation; (2) in indoor simulative experiment, the soil moisture in each layer depth becomes great as the depth ascend in the direction of the water transportation; (3) indoor and outdoor simulative experiment results indicates that temperature and snow depth exists significant negative correlation,there is no relationship between the radiation and the snow depth. There exists significant negative correlation among snowmelt water and air temperature, radiation, snow depth,and the correlation coefficient of outdoor experiment is bigger than indoor simulation experiments. This paper expectes through pre-experiment and this experiment and a series of experiments in the future, the design of the experiment will gradually perfect, gets more comprehensive and detailed data, and produces a series of research achievements, enriches researched contents of snow melting process field, thus deepening the knowledge and understanding of snowmelt microscopic aspects, and provides detailed data for snowmelt runoff model and snowmelt flood early warning. It could provide important reference for the hydrological forecast and water resources management.