Application of 3D Parallel High Density Electrical Method in Site Investigation of Liuguo Chemical Phosphogypsum Stack
Before the implementation of engineering projects,it is essential to determine the detailed distribution of underground spaces in the work area.The deployment of a 3D high-density electrical observation system is difficult,and using conventional electrical equipment for acquisition is time-consuming,especially in complex geological conditions.By using parallel electrical acquisition technolo-gy,efficient data acquisition can be achieved.To accurately determine the three-dimensional morphology of the area where possible leak-age pipes may form in the lower part and surrounding areas of a phosphogypsum stacking yard,parallel electrical acquisition was used to collect data,combined with actual geological conditions.The three-dimensional electrical exploration data volume under the true three-di-mensional observation system in the measurement area was obtained,and the data was processed and interpreted with three-dimensional inversion with terrain.The results show that 3D parallel high-density electrical observation can effectively and accurately reveal the distri-bution of underground spaces on the site.A total of 5 abnormal areas were delineated during the on-site exploration.The results were con-sistent with the drilling exposure data and provided accurate basis for guiding the construction of anti-seepage curtains in the later stage.