关键词: 地质环境, 断裂, 地温特征, 成因分析

Abstract: The characteristics of geothermal gradient changes are influenced by multiple factors such as geological structure，stratigraphic lithology，hydrogeological conditions，cap rock thickness，and deep active fractures. This article uses the actual temperature measurement data of drilling wells in Jinchanghe mining area，Baoshan City，to draw isotherm maps from two scales of drilling depth and elevation. At the same time，combined with regional structure and rock mass distribution，the distribution laws of ground tem‐ perature at different depths and elevations are compared，and the characteristics and main controlling fac‐ tors of ground temperature gradient changes are comprehensively analyzed and studied. The differences in geothermal geological conditions，genesis，and structural thermal evolution in the region are summarized. The research results indicate that at the same elevation，there is a significant concentration of thermal ef‐ fects around the F2 and F10 fracture zones. The temperature increase of the F2 fracture is slightly higher than that of the F10 fracture，and as it moves westward，the ground temperature increases with depth，while a rela‐ tively low temperature section appears clearly in the exposed rock mass area. Under the same depth condi‐ tions，comparing the geothermal maps of different depths，there are two obvious differences. Firstly，there is a difference in geothermal temperature near the fracture zone. On the F2 and F10 fracture zones，the tempera‐ ture is slightly higher. Secondly，near the rock mass，a slightly lower circle is clearly present. Through com‐ prehensive research，it has been determined that the thermal anomalies in the region are mainly controlled by intrusive rock activity and fault activity. The shallow sedimentary rocks are continuous and intact，form‐ ing a good thermal insulation cover layer.

Key words: geologic environment, fracture, geothermal gradient, genesis analysis