scholarly journals Applications of Geophysical Methods in Tunnel and Oil Exploration

2021 ◽  
Vol 889 (1) ◽  
pp. 012015
Author(s):  
Shivam Sharma ◽  
Shalini Thakur ◽  
Tarun Sharma
Keyword(s):  
Seismic Refraction ◽  
Geophysical Methods ◽  
Oil Sand ◽  
Resistivity Method ◽  
Refraction Method ◽  
Gravity And Magnetic ◽  
Different Types ◽  
Electrical Resistivity Method ◽  
Seismic Refraction Method

Abstract Geophysical studies can be utilized adequately to decide the land, hydro geographical and geotechnical properties of the ground mass in which the designing development is occurring. The investigation must be given to the contractor to ensure the information related to soil or to predict the type of equipment to be used and to estimate productivity and cost. This article examined how integrated geophysical methods were carried out for the determination of the degree of fracturing and rigidity of rock mass. Data were collected from different case studies in which comparison is there between different types of methods suited for different type of evaluations. In this paper, methods involved for the explorations are seismic refraction method, electrical resistivity method, magnetic and gravity method for oil explorations. The authors found that gravity and magnetic are best suited methods for the oil sand exploration and because of the high acceptance of designing a lot latest applications expected in future. The techniques used in these methods are relatively cheap and fast finding in comparison to other methods.

scholarly journals SEISMIC REFRACTION METHOD IN THE DETERMINATION OF SITE CHARACTERISTICS

2020 ◽  
Vol 53 (2D) ◽  
pp. 53-63
Author(s):  
Mundher Alsamarraie
Keyword(s):  
Seismic Velocity ◽  
Seismic Refraction ◽  
Geophysical Methods ◽  
Shallow Subsurface ◽  
Site Characteristics ◽  
Refraction Method ◽  
First Arrival ◽  
Seismic Refraction Method ◽  
Profile Characteristics

Preliminary site properties need geophysical methods to determine it, the same as the large use of the seismic refraction method to detect the layers of soil and the depth reaching the bedrock. This study was conducted to find out the subsurface profile characteristics of a backyard field in UTM, Skudai following the principles of this method. The analysis of seismic data processed using ZondST2D software by determining the first arrival time until we get a block model of 2D shape based on the primary propagation of seismic velocity wave’s in soil layers. It was found that the investigated subsurface profile consists of four layers showing the level of weathering grade ranges from 600–4000 m/s based on the classification of rock mass in Malaysia. It was found that weathering rates decreased at higher depth, with the increase of density for the material and dampness reduction of seismic velocity. It was concluded that the survey of seismic refraction in development can be used only for shallow subsurface profiles and far from noise and disturbance.

scholarly journals A comparative study for structural bedrock delineation by using conventional geophysical methods

2001 ◽  
Vol 34 (4) ◽  
pp. 1301
Author(s):  
Τ. Δ. ΠΑΠΑΔΟΠΟΥΛΟΣ ◽  
I. A. ΑΛΕΞΟΠΟΥΛΟΣ ◽  
Π. Ι. ΚΑΜΠΟΥΡΗΣ
Keyword(s):  
Seismic Refraction ◽  
Geophysical Methods ◽  
Clear Distinction ◽  
The Past ◽  
Tectonic Processes ◽  
Refraction Method ◽  
Limestone Bedrock ◽  
Modern Analysis ◽  
Seismic Refraction Method ◽  
Effective Design

In this paper is examined the potential and effectiveness of two conventional geophysical methods in geotechnical research. The seismic refraction method that has been successfully used in the past for subsurface bedrock delineation in foundation projects, failed to indicate clear distinction between flysch and limestone bedrock material in the area under investigation. This failure is due to the macro-anisotropy structure of the limestone that resulted from joints, tectonic processes or/and karstic phenomena and later fillings of the voids with argillaceous material. The geoelectrical method of vertical sounding, on the other hand, although provided a clear distinction for the bedrock characterization, failed to distinguish the overburden cover from the underlain flysch formation. Finally, in this paper it is shown that for a successful application of geophysical work in  geotechnical research, it is required effective design, utilization of modern analysis methods and handling more than geophysical methods.

DETERMINATION OF DIPS AND DEPTHS OF GEOLOGICAL LAYERS BY THE SEISMIC REFRACTION METHOD

Geophysics ◽  
1954 ◽  
Vol 19 (2) ◽  
pp. 242-254 ◽  
Author(s):  
Lindonor Mota
Keyword(s):  
Seismic Refraction ◽  
Refraction Method ◽  
Seismic Refraction Method ◽  
Seismic Refraction Data ◽  
Refraction Data

Equations are developed for computing depths and dips of 1, 2, 3, ⋯, n inclined interfaces from seismic refraction data without the aid of graphical techniques.

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