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Geophysical geophysical methode for detecting coal

SURFACE GEOPHYSICAL METHODS FOR DETECTION OF …

SURFACE GEOPHYSICAL METHODS FOR DETECTION OF UNDERGROUND MINE WORKINGS By William J. Johnson and Robert E. Snow – D’Appolonia, Monroeville, PA

Geophysical prospecting

In coal mining: Geophysical exploration. In geophysical exploration, the seismic, electric, magnetic, radiometric, and gravitational properties of earth materials are measured in order to detect anomalies that may be caused by the presence of mineral deposits. Their form of exploration may begin with airborne methods in regional and… Read More

Geophysics - CCTEG Xi'an Research Institute Co. Ltd

Geophysics is one of the leading business with long history, covers mainly highly efficient investigation of coal resources, fine investigation of mining geological conditions, detection of the hidden disaster-inducing factors, monitoring and early warning of mining dynamic hazard in coal mines, production and manufacturing of mining geophysical instruments, etc.

SURFACE GEOPHYSICAL METHODS FOR DETECTION OF …

SURFACE GEOPHYSICAL METHODS FOR DETECTION OF UNDERGROUND MINE WORKINGS By William J. Johnson and Robert E. Snow – D’Appolonia, Monroeville, PA John C. Clark – Bay Geophysical Associates, Traverse City, MI Abstract Efforts to delineate underground mine workings in the vicinity of tailings impoundments has

Review of Geophysical Exploration On Mined-out Areas and ...

On the basis of the relevant research, this paper defines different goaf types from the perspective of geophysical exploration and discusses the geophysical prerequisites for goaf detection. DC methods, electromagnetic methods, seismic methods, and other geophysical methods on the ground and in the subsurface are reviewed and summarized using ...

Archived: High-resolution 3D surface seismic method and ...

Gochioco – High-resolution 3D surface seismic and coal geophysics program 2 written and archived. The borehole camera method was the only non-seismic geophysical method published since it was a non-proprietary technology (Gochioco et. al., 2002). It is a simple system that provided invaluable benefits to the coal company.

Gravity Methods | Environmental Geophysics | US EPA

This website beta version contains information on geophysical methods, references to geophysical citations, and a glossary of geophysical terms related to environmental applications. the website provides a beta version of the Geophysical Decision Support System (GDSS), which is an informal application for obtaining suggested geophysical methods and citations based on information you …

Characteristic of geological anomaly detected by combined ...

through measuring and combined geophysics methods in the laneway. 2. Combined geophysical detecting methods Currently, many geophysical detection methods can be used in the laneway, and the main methods include the elastic wave testing method, the DC resistivity method, the transient electromagnetic method, and infrared detection, etc.

Exploration geophysics - Wikipedia

Exploration geophysics is also used to map the subsurface structure of a region, to elucidate the underlying structures, spatial distribution of rock units, and to detect structures such as faults, folds and intrusive rocks. This is an indirect method for assessing the …

Detection of Abandoned Underground Coal Mines by ...

----- DETECTION OF ABANDONED UNDERGROUND COAL MINES BY GEOPHYSICAL METHODS by HRB-Singer, Incorporated Environmental Sciences Branch Science Park State College, Pennsylva for the ENVIRONMENTAL PROTECTION AGENCY and the PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL RESOURCES Proj EHN April 1971 For salo by the Superintendent of …

Geophysics - Geotechnical | Gannett Fleming

We use a full range of surface and down-hole geophysical methods to identify subsurface conditions in support of engineering, environmental, and groundwater investigations. Read more about Quantum’s capabilities. What You Can Expect. Extensive Project Experience We’ve conducted more than 500 geophysical surveys since 1990.

The application of geophysics in South African coal mining ...

and application of geophysical methods, as local coal mining companies generally do not have in-house geophysicists. Consequently, the Coaltech Research Organisation’s Geology and Geophysics working group forum compiled a textbook aimed at addressing this need: to produce a guide for applying geophysics to coal mining problems in South Africa ...

NI 101 standards and best practice guidelines: data ...

Geophysical logs: Down-hole geophysical logs are an essential part of the quality control measures employed during coal sampling, before dispatch of samples for analysis. Variations in coal quality, such as high-ash beds that are difficult to detect visually, can be discerned from geophysical logs.

NIOSHTIC Publications Search - 10001676 - Technology ...

Geophysical investigations that employ only a single method have had mixed success in detecting hazardous abandoned mine land cavities. In operation with CDNR-MLRD, the Bureau of Mines selected the Canon Imperial abandoned coal mine site, located approximately 3 miles southwest of Florence, CO, to test an integrated geophysical approach to ...

Exploration geophysics - Wikipedia

Exploration geophysics is also used to map the subsurface structure of a region, to elucidate the underlying structures, spatial distribution of rock units, and to detect structures such as faults, folds and intrusive rocks. This is an indirect method for assessing the …

Research on the Channel Wave Field Characters of Goaf in ...

Goaf badly affects coal mine production safety; therefore, accurate geophysical exploration method to ascertain the goaf is urgently needed. Channel wave seismic technology is suitable for coal mine goaf detection because it has many advantages, such as long transmission distance, high resolution.

Coal Exploration and Mining

This article is primarily intended to introduce some general knowledge of coal exploration and mining. The first part of this article deals with the purposes and operative methods of coal exploration in terms of field studies, literature surveys, map compilation, surface geophysics, drilling for coal, and the collection and description of

PARAMETER ESTIMATION AND FAULT DETECTION BY THREE ...

parameter estimation and fault detection by three-component seismic and geoelectrical surveys in a coal mine* m. breitzke 1, l. dresen 1, j. csokas 2, ... parameter estimation and fault detection by three-component seismic and geoelectrical surveys in a coal mine. geophysical prospecting, 35: 832–863. doi: 10.1111/j. 2478.1987.tb02261.x ...

Petropedia - What is Geophysical Exploration? - Definition ...

Geophysical Exploration is an applied branch of geophysics that uses physical methods to measure the physical properties of the subsurface, along with the abnormalities in those properties at the surface of the earth. It is commonly used to detect the presence and position of geological deposits that could be economically used.

GEOPHYSICAL MANUAL

Designed on using various geophysical methods and techniques for solving engineering problems. 6 Part I – Geophysical Manual ... GEOPHYSICAL VOID DETECTION DEMONSTRATIONS Part III – Abandoned Mine Voids Detection no i t c e l f Rec ims i•Se ... Anomalous Coal Response from P-wave Part III – Abandoned Mine Void Detection ...

Archived: Geophysical Technologies for Detecting ...

Gary Olhoeft, Professor of Geophysics Colorado School of Mines 4:00 p.m. Panel Discussion Neil Anderson, John Craynon, Gary Olhoeft, Don Steeples, Richard Sweigard, Roy Tiley, and Kelvin Wu 6:30 p.m. Hospitality Hour and "Open Door" to University of Kentucky Basketball Museum Geophysical Technologies for Detecting Underground Coal Mine Voids

GEOPHYSICS

Geophysics may also used to map the subsurface structure of a region, to elucidate the underlying structures, spatial distribution of rock units, and to detect structures such as faults, folds and intrusive rocks. This is an indirect method for assessing the likelihood of …

NIOSHTIC Publications Search - 10001676 - Technology ...

Geophysical investigations that employ only a single method have had mixed success in detecting hazardous abandoned mine land cavities. In operation with CDNR-MLRD, the Bureau of Mines selected the Canon Imperial abandoned coal mine site, located approximately 3 miles southwest of Florence, CO, to test an integrated geophysical approach to ...

Geophysics GPR International inc. - Applied geophysics

At Geophysics GPR International Inc. we are committed to innovating in applied geophysics. Through our knowledge and ability to apply traditional and innovative geophysical methods, we solve geologic, geotechnical, engineering and mining challenges.

Gravity Methods | Environmental Geophysics | US EPA

This website beta version contains information on geophysical methods, references to geophysical citations, and a glossary of geophysical terms related to environmental applications. the website provides a beta version of the Geophysical Decision Support System (GDSS), which is an informal application for obtaining suggested geophysical methods and citations based on information you …

Petropedia - What is Geophysical Exploration? - Definition ...

Geophysical Exploration is an applied branch of geophysics that uses physical methods to measure the physical properties of the subsurface, along with the abnormalities in those properties at the surface of the earth. It is commonly used to detect the presence and position of geological deposits that could be economically used.

GEOPHYSICAL TECHNIQUES AND THEIR ...

Though, it is the oldest geophysical method but advance in technology makes it relevant in many area of geophysical, geological and mining research. 5. CONCLUSION Geophysical methods has wide range of applications in many area of earth related sciences and engineering disciplines.

Geophysical and intrusive site investigations to detect an ...

Geophysical and intrusive site investigations to detect an abandoned coal-mine access shaft, Apedale, Staffordshire, UK. ... Geophysical methods can be implemented rapidly, covering a ...

Overview on the application of geophysics in coal mining ...

 · Highlights I review applications for geophysics in support of coal mining operations. I discuss techniques used for mapping coal seams and geotechnical characterisation. Methods for void detection and monitoring the ground response are also discussed. Future applications for geophysics are also considered.

Detection of abandoned underground coal mines by ...

Get this from a library! Detection of abandoned underground coal mines by geophysical methods.. [Wilson Fisher, Jr.; HRB-Singer, Inc. Environmental Sciences Branch.; United States. Environmental Protection Agency.; Pennsylvania. Department of Environmental Resources.] -- Acid drainage produced by abandoned coal mines continues to cause serious water pollution problems.

GEOPHYSICAL METHODS FOR COAL FIRE DETECTION AND MONITORING

Abstract Within the framework of the Sino-German research initiative "Innovative technologies for exploration, extinction and monitoring of coal fires in Northern China" a number of different geophysical methods have been applied to determine their use on coal fire detecting, accompanying the extinguishing processes, controlling of the extinction and finally monitoring the extinction success.

Research on the Channel Wave Field Characters of Goaf in ...

Goaf badly affects coal mine production safety; therefore, accurate geophysical exploration method to ascertain the goaf is urgently needed. Channel wave seismic technology is suitable for coal mine goaf detection because it has many advantages, such as long transmission distance, high resolution.