computer adaptation of the delay-time method, INTRODUCTION Seismic refraction techniques have been used for many years to map rock layers of interest in problems associated with petroleum exploration, mining, civil engineering, and deep crustal studies. .4 good collection of
Musgrave, A.W., ed., Seismic-refraction prospecting Tulsa, Okla., Society ofExploration Geophysicists, p. 197-216. Discussion of near-surface geologic conditions and the effects of varying shot depths on the interpretation of shallow refraction formulas. Meridav, Tsvi, 1960, Nomograms to speed up seismic refraction
for identifying stress in rock. A seismic tomographic survey, finite-difference analysis, laboratory measurements of compression wave ultrasonic velocities in rock cores, and site geology were integrated to evaluate the use of seismic tomography for identifying induced pressures in an underground pillar at the Edgar Mine, Idaho Springs, CO.
The Seismic Refraction method involves the measurement of travel times of seismic compressional waves P-waves that are generated at the surface, propagate through the subsurface and return to the surface after being refracted at the interface between layers of contrasting seismic velocity.
these cases applying some geophysical methods seems to be very useful and practical. The analysis of two-year cyclic levelling and seismic refraction measurements carried out in area of mining exploitation is presented in this paper. The application of complex researches and the detailed study of head wave velocity and mining
The seismic refraction method is based on the measurement of the travel time of seismic waves refracted at the interfaces between subsurface layers of different velocity. Seismic energy is provided by a source shot located on the surface. Energy radiates out from the shot point, either travelling directly through the upper layer direct ...
P iUMMARY i seismic refraction profile was carried out over Placer Leases 1160 and 1161 at the confluence of Snowshoe Creek and Keithley reek in the Cariboo M.D., B.C. on November 20th and 21st, 1980.he mouth of Snowshoe Creek is located 21.8 km NlOE of Likely. iccess is easily gained by a 2-wheel drive vehicle over a series
Mohamed, Near-surface seismic refraction applied to exploring subsurface clay layer at a new mining area in southeast Cairo, Egypt, Arabian Journal of Geosciences, 3, 2, 105, 2010. Crossref H.H. Seisa , Migration and interpretation of first arrival inflection points due to lateral variations , Near Surface Geophysics , 8 , 1 , 55-63 ...
Near-surface seismic refraction applied to exploring subsurface clay layer at a new mining area in southeast Cairo, Egypt A. K. Abd El-Aal amp A. A. Mohamed Received 10 September 2008 Accepted 20 January 2009 Published online 7 March 2009 Saudi Society for Geosciences 2009 Abstract A near-surface seismic refraction survey was
11. Transient field methods, 52 a. Seismic refraction method,53 b. GPR method, 53 c. Seismic reflection method, 56 12. Discussion, 56 a. Comparison of electrical methods, 57 b. Relevance of methods for void detection, 58 References Appendix A
The marine refraction method can map the bedrock depth in areas not accessible by drilling platforms, whether due to safety, logistical or environmental issues. The refraction method involves measuring the shortest time required for an induced seismic pulse to travel from the source location to a series of receivers. From this travel time data ...
Introduction. The seismic refraction method utilizes seismic waves travelling through different parts of the subsurface. A seismic source is used to generate compressional waves, which is measured by a seismograph and a series of evenly spaced sensors typically 12, 24, 48 or more geophones.
Seismic refraction method In refraction method, the detecting instruments recorded the arrival times of the seismic waves when refracted from the surface of discontinuity. These times give information on the velocities and depths of the subsurface formations along which they propagate.
There is growing evidence that passive margin sediments in offshore settings host large volumes of fresh and brackish water of meteoric origin in submarine sub-surface reservoirs. Marine geophysical methods, in particular seismic reflection data, can help characterize offshore hydrogeological systems and yet the existing global database of industrial basin wide surveys remains untapped in this ...
The seismic refraction method, due to its versatility, is one of the most commonly used geophysical methods in engineering, mining, groundwater exploration and environmental site investigations. Based on favourable density contrasts that generally exist between geological materials, the refraction method is utilised to provide detailed ...
Refraction. The seismic refraction method involves measuring the shortest time required for an induced seismic pulse to travel from the source location to a series of receivers. From this travel time data, seismic velocities and layer depths can be calculated.
Reflection seismology, seismic refraction, seismic tomography, 2D, 3D seismic to survey for deposits from 500 to 2000 m depth below the reach of conventional geophysical techniques are expensive 5000070000 per sq. km, but the right tool for areas which have mining infrastructure.
Oct 13, 2019 thickness of the overburden for quarry prospecting using a geophysical method called as seismic refraction method. The non-destructive technique of seismic refraction was applied in producing the subsurface profile of the potential quarry area. Based on the seismic image the layer of bedrock and the thickness of overburden to be removed was
The method of seismic refraction is one of the seismic techniques that is commonly used to evaluate soil and rock characteristics Adegbola et al., 2013Ayolabi et al., 2009.
Sep 04, 2017 Campell, Seismic methods in mineral exploration and mine planning a general overview of past and present case histories and a look into the future. Geophysics. 77 ,
Jan 30, 2019 Ludger Mintrop. Ludger Mintrop July 18,1880 - January 1, 1956 was a German mine surveyor and geophysicist. Mintrop is considered the inventor of the seismic method for exploration of hydrocarbons and minerals Patent 1916, through the seismic refraction method. Among the many accolades and awards in recognition of his seminal work in seismic ...
Traditional geophysical exploration methods in the mining industry have relied heavily on potential-field and electromagnetic methods, both airborne and ground-based, to locate drilling targets. Although it is generally recognized that seismic methods provide sufficient depth penetration and resolving power for deep exploration, the prevailing ...
The authors have developed a new method for the analysis of seismic refraction data, which can handle both surface and borehole data simultaneously. The main features of the method we developed are as follows 1 The algorithm of analysis is based on the tomographic reconstruction technique, and refraction data can be analyzed almost automatically after traveltime picking.
Seismic methods in mineral exploration and mine planning Introduction. Download. Related Papers. 3D constraints and finite-difference modeling of massive sulfide deposits The Kristineberg seismic lines revisited, northern Sweden ... Metalliferous mining geophysics State of the art after a decade in the new millennium.
Feb 29, 2016 Seismic Method. Surface seismic techniques used in gold exploration are restricted to seismic refraction and seismic reflection methods. Probably, the first one is the most employed. The equipment employed for both techniques is very similar and assure the travel time of acoustic waves propagating through the subsurface.
35 meters. Seismic refraction methods fail at this site because of an intra-alluvial velocity inversion. Two seismic reflection surveys were conducted at the same location along a country road and were intended to outline the buried river channel. The older survey was conducted in
Seismic refraction work was carried out over placer leases 3041, and 13224 located near Atlin on McKee Creek in the Atlin Mining Division, R.C., during the period March 9th to Ilth, 1986. The object of the survey was to locate a buried creek channel carrying placer
Key words Up-hole survey, seismic refraction, p-wave velocity, weathering layer, consolidated layer. INTRODUCTION The up-hole method of seismic refraction survey is a field seismic technique which uses receivers on the ground surface and an underground source to derive information about the subsurface lithology.
Basic seismic refraction survey and data interpretation techniques, Rosli Saad Resource Information The item Basic seismic refraction survey and data interpretation techniques, Rosli Saad represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Missouri University of Science amp Technology ...
The Seismic Refraction method involves the measurement of travel times of seismic compressional waves P-waves that are generated at the surface, propagate through the subsurface and return to the surface after being refracted at the interface between layers of contrasting seismic velocity. Seismic wave velocities are controlled by the ...
The most important thing to keep in mind when learning how the seismic refraction method works is this When doing seismic refraction, we are only interested in first-arrival energy at each geophone. The rest of the wave train -- reflected energy, surface waves, etc. are discarded and ignored.
A near-surface seismic refraction survey was conducted at a new mining area located in southeast Cairo, Egypt, to explore the subsurface clay layer for future economic use in mining and cement industry. The purpose of the survey has been to provide geological and geophysical information because no borehole was existent in the area under investigation. The aim of study had been to explain the ...
Borehole. Borehole seismic surveys can be carried out in several different ways. The Down-hole technique consists of measuring the arrival of seismic waves emitted from the surface in increments down the borehole. The Cross-hole technique uses a seismic source located in an adjacent borehole. The receiver in both cases is a tri-axial geophone.
The seismic refraction method, due to its versatility, is one of the most commonly used geophysical methods in engineering, mining, groundwater exploration and environmental site investigations. Based on favourable density contrasts that generally exist between geological materials, the refraction method is utilised to provide detailed information on the distribution and thicknesses of subsurface layers with
The seismic refraction method utilizes the refraction of seismic waves on geologic layers and rocksoil units in order to characterize the subsurface geologic conditions and geologic structure. SEISMIC REFLECTION The seismic refraction method is based on the measurement of the travel time of seismic waves refracted at the interfaces between subsurface layers of different velocity. Seismic