平朔矿区采空区电法勘探技术.

In order to accurately identify the old goaf in Pingshuo mining area, based on the optimized electrical exploration method, a parameter optimization test was performed to determine the corresponding construction technology system, and it was applied on site. The results show that the electrical exploration in Pingshuo mining area was mainly based on the TEM to detect the goaf and water accumulation area, the CSAMT was used to detect the middle and deep and multi-layer goaf, and the DC method was used to detect the strong electromagnetic interference and shallow mined-out area of the pit step area. After parameter optimization, the TEM wire frame was 240 m × 240 m, the frequency was 8 Hz, the power supply current was 10 A, the CSAMT transmission and reception distance was 3.5 km, the MN point distance was 10 m, and the measurement point distance was 2～5 m, the influence of different AO distances in DC method was small. The research conclusions preliminarily determined that the TEM and the CSAMT were suitable for the detection of the goaf in the Pingshuo mining area, and the construction parameters provided a more reliable reference for the precise exploration of the goaf in the Pingshuo mining area. [ABSTRACT FROM AUTHOR]