Detection of subsurface contamination by using risistivity image profiling method

• Main Authors: Chung Jinn-Yu, 鍾進渝
• Other Authors: Yang Chieh-Hou
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/73914773376920958542

碩士 === 國立中央大學 === 應用地質研究所 === 89 === Abstract Risistivity image profiling (RIP) using pole-pole and Wenner techniques was used to study the subsurface contamination in two selected sites in Taiwan. The first one is to investigate the geoelectrical signatures using two-dimensional (2-D) RIP and three-dimensional (3-D) RIP surveys at a DNAPL site. Compared the results obtained from a contaminated zone to that of no DNAPL being detected zone were also done. Next is to delineate the subsurface structure and evaluate the feasibility of the RIP method applied to map the buried wastes in a landfill. Some conclusions can be drawn as follows: 1. High resistivity zone associates with the DNAPL zone; the higher the resistivity is, the denser the DNAPL is. 2. The location of migrated DNAPL researches to a depth of 15 m. 3. The high resistivity anomalies underneath the Lines A and P3 may associate with the migrated residual DNAPL. 4. RIP method is suitable for delineating the wastes in a landfill. 5. A ratio of 0.72 between the dips measured within the trench and that of the resistivity images.