1. College of Construction Engineering, Jilin University, Changchun 130026, China; 

 When a water?bearing karst structure exists, the temperature field of shallow strata will change. The shallow temperature measurement method can quickly and easily obtain shallow geothermal data, and the distri? bution of karst structures can be inferred through temperature differences. To study the feasibility of detecting karst conduit structures using shallow temperature measurement technology in a site in Panzhou City, Guizhou Province, and its surrounding areas, the numerical simulation methods were used. The results show that different burial depths of the structure significantly change the temperatures of shallow strata. For a single karst conduit structure (with an equivalent diameter of 0. 5 m and water temperature of 12 ℃ ), the maximum detectable depth is approxi? mately 66 m. When the fluid temperature inside the conduit is 12 ℃ , an increase in the effective flow cross?sec? tional area of the karst conduit structure will lower the temperature of the shallow strata. When the equivalent diam? eter changes within the range of 0. 1 to 1. 0 m, the change in the temperature of the strata at 2. 0 m is within0. 02 ℃ , making it difficult to identify changes in the effective flow cross?sectional area of karst structures using shallow temperature measurement. The change in fluid temperatures within a certain range (12 to 18 ℃ ) will alter the temperatures of the shallow strata, especially the impact of low?temperature fluids.