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在神朔铁道神木至大柳塔段，为了解地下煤窑空洞与隧道情况，布设了６条测线，共计３８８个测点，进行了地磁总强度观测工作。根据观测数据，分析了测区的磁场分布特征。由此初步推断，测区东南部的Ｅ区负异常是由地下矿道引起的；测区中部的Ｄ区负异常也是有地下矿道的部分贡献；测区其他部分，由于存在地下浅层铁磁性物质与铁轨的严重影响，地下矿道的位置与走向需要进一步讨论。
In Shenmuo railway from Shenmu to Daliuta section, in order to understand the underground coal caverns and tunnels, six survey lines were set up, measuring a total of 388 measuring points and observing the geomagnetic total intensity. According to the observed data, the magnetic field distribution characteristics of the survey area are analyzed. From this, it can be inferred that the negative anomaly in area E in the southeastern part of the survey area is caused by the underground mine; the negative anomaly in area D in the middle part of the survey area is also part of the contribution to the underground mine; in other parts of the survey area, The serious influence of magnetic material and railroad track, the location and trend of underground mine road need further discussion.