Geotechnical Essay Example | Topics and Well Written Essays - 500 words

Geotechnical - Essay Example Geotechnical engineering uses the geophysical methods in measuring the physical properties on the earth sub surface. These methods have the potential of measuring the anomalies in the properties of soil to identify the position and the presence of minerals (Das and Sobhan, 2013). They involve applying physical methods in measuring the physical traits of rocks and soil thus detecting the physical differences between the rocks that have the hydrocarbons or ore deposits. This paper explores the different types of geophysics method and their use in geotechnical engineering. Electromagnetic induction (EM) involves a method that uses the induction principles in measuring the electrical conductivity of the subsurface. Different from the techniques of conventional resistivity, EM requires no contact in the ground. This eliminates the fast problems of electrical coupling allowing much acquisition of rapid data. Since the EM instruments give an easy and rapid collection of data, the instruments are always used as the tools of reconnaissance used in identifying the greatly detailed anomalies (Nobes, 2000). The induced electromagnetic pulse can be measured using the frequency domain meters and time domain meters. GPR (ground penetrating Radar is utilized in pinpointing the buried objects location and mapping and having stratigraphy mapped out. It gives the shallow subsurface cross-sectional measurements. The method has the ability of locating the nonmetal and metal objects. In many cases, data and profiles are recorded and the result is shown using the real time having the attached display unit of the computer. This results into a fast and easy field interpretation. More data interpretation could be done later (Nobes, 2000). The instruments of GPR have energy beamed into the ground from the antenna in the electromagnetic wave form. An energy position is reflected towards the antenna at the specific subsurface