This chapter elaborates on how the author's research team uses SOTEM to solve practical problems in the field of resource environment, such as metal ore and coal mine prevention and control, and provides nine examples, including: Henan Ye County SOTEM test and salt dissolution detection, Shandong Huafeng coal mine deep water-rich investigation, Qiaoshan mining area gold polymetallic ore detection, Anhui Taoyuan coal mine water body detection, Hebei Shunping city active fault detection, Shaanxi Hancheng deep coal seam water content, Qinghai area wild horse spring iron lead zinc polymetallic ore, Henan coal under bauxite, Anhui Wuwei lead zinc mine, etc. This chapter provides a detailed introduction to the geological problems, key technologies, and detection results in these practical detection problems, which can provide ideas and references for readers to understand SOTEM detection issues.