The characteristics of temperature distribution in vertical and horizontal directions and the conductance distribution in horizontal direction in an earth dam were analyzed , and the locations , distribution characteristics , ranges , and leakage rate of main leakage passages of the dam were calculated by use of the virtual heat - source method presented in this paper , the result of study provides a scientific basis for dam leakage control 分析某贮灰场土坝垂向和水平温度分布特征、电导水平分布特征，并利用渗漏探测虚拟热源法模型，计算出该土坝的集中渗漏通道的空间位置、展布特点、范围大小和渗漏强度，为堤坝渗漏治理提供科学依据。
Through the thermodynamic analysis for the sandstorm weather according to the simulated potential temperature , potential vorticity field , it is found that this sandstorm weather occurred in the condition of the atmospheric stratification stability , the area of the high potential temperature value and the potential temperature gradient have a good corresponding relationship with the surface cold air and cold front , so are the strength of potential vorticity and the different developing stage of sandstorm 利用输出的位温、位势涡度场，对沙尘暴天气进行热动力条件分析，发现本次沙尘暴天气发生在大气层结稳定状态下，位温大值区及位温梯度与地面暖低压的强弱和移动有着很好的对应关系，位涡的水平分布特征和强弱变化对沙尘暴的出现时间和落区有一定的指示意义。
