Geoelectrical Survey for Engineering Investigation

• 作者: A. H. A Teh Saufia Andy A. Bery I. N. Azwin M. M. Nordiana Mark Jinmin Nisa’ Ali Noer El Hidayah Ismail Rosli Saad S. L. Ragu Ragava R. Y. C. Kiu
• 来源期刊: 地质学期刊(英文)
• 学科: 医学
• 关键词: Geoelectrical 2D RESISTIVITY SELF POTENTIAL ENGINEERING
• 年，卷（期）: 2013,（2）
• 页码范围: 46-49
• 页数: 4页
• 分类号: R73

摘要

Water seepage erosion has been and remains one of the major engineering problems. However, most engineers will much depend on borehole data and soil test for designing and problem detection. By considering of the cost and destructive method, selection of geoelectrical prospecting would be appropriate. Therefore, two electrical geophysical surveys were carried out in Sekolah Menengah Kebangsaan Dato’ Haji Mohd Nor, Gelugor, Pulau Pinang to map the presence of the unknown underground water sources (saturated zones) and its movement. With the total of seven resistivity lines parallel to each other and self potential (SP) with 5 m × 5 m gridding survey were successfully done. The resistivity result from line 1 (R1) to line 6 (R6) shows the subsurface consist of saturated zones with range between 3 m up to 10 m depth, before it reaches the R7 which is believed as the accumulation zone. Meanwhile, as for SP result it shows the water flow from higher value (north-east) towards the lower value which is mostly at the south area. In conclusion, geoelectrical survey could assist in detecting and solving engineering problems as it proven by the result from each method.