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While coal mining in the UK and West Germany is now much reduced, these geophysical techniques have been taken up elsewhere in countries such as China, Australia and the USA. This paper provides an overview on the current status of the geophysical effort in coal mining.
GEOPHYSICAL VOID DETECTION DEMONSTRATIONS Kanaan Hanna, Bart Hoekstra, Jim Pfeiffer and Brandy Uphouse ZAPATAENGINEERING, Blackhawk Division ABSTRACT This paper describes the results of geophysical field demonstrations conducted at a known abandoned underground coal mine, eastern Illinois. This investigational program, in cooperation
Request PDF on ResearchGate | Overview on the application of geophysics in coal mining | Since their introduction to the coal mining industries of the United Kingdom and West Germany in the 1970s ...
Abstract: Water-bearing goaves are one of the main causes for water inrush accidents in Chinese coal mines. At present, both the surface and subsurface geophysical technologies cannot fully meet the technical requirements of high precision detection for coal mines safety development and production.
In coal mining, a poorly sealed borehole is one of the channels that can lead to an inrush of water and quicksand movement, seriously compromising the safety of the coal mine. In this paper, we ...
YCS2000A Transient electromagnetic instrument (TEM) for coal mines. Main application. This TEM is an intrinsic safety instrument designed for water-bearing/intruding structure detection in the gas or coal dust explosive dangerous environment of underground coal mine.
the electrical resistance. Mine voids in coal mines are usually encountered as resistiv-ity lows because of the presence of acidic mine water. Other Methods, such as magnetics and ground penetrating radar have been used for detecting subsurface cavities, but can be subject to precision, interference, or depth
Geophysical Technologies for Detecting Underground Coal Mine Voids, Lexington, KY, July 28-30, 2003 5 In contrast to the coal, the modeling strongly defines the water-flooded mine openings. A problem with the interpretation of the voids is that it is difficult to determine the thick-
OSTI.GOV Conference: Geophysical void detection at the site of an abandoned limestone quarry and underground mine in southwestern Pennsylvania. Geophysical void detection at the site of an abandoned limestone quarry and underground mine in southwestern Pennsylvania. Full Record;
Detection of igneous intrusions Discontinuities in coal seams at the margins of dykes and other igneous intrusions can also be the sites of outbursts. Igneous intrusions can be investigated by geophysical surveys. Airborne and ground surface magnetic surveys are frequently conducted to locate dykes that might disrupt underground mining.
----- DETECTION OF ABANDONED UNDERGROUND COAL MINES BY GEOPHYSICAL METHODS by HRB-Singer, Incorporated Environmental Sciences Branch Science Park State College, Pennsylvania 16801 for the ENVIRONMENTAL PROTECTION AGENCY and the PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL RESOURCES Project 14010 EHN April 1971 For salo by the Superintendent of .
Chantelle A. Rebello, Sara J. Couperthwaite, Graeme J. Millar and Les A. Dawes, Understanding coal seam gas associated water, regulations and ... Dobróka In‐Mine Geoelectric Methods for Detection of Tectonic Disturbances ... disturbed coal seams and around a coal mine roadway, Geophysical .
Keys to Successfully Using Geophysics to Detect Mine Voids and Covered Sinkholes Geotechnical, Geophysical, Geoenvironmental ... Geophysical Imaging of an Underground Coal Mine Geophysical Imaging of a Karst Sinkhole and Void Beneath Airport Runway. ... 2B-2_G15-43_Mine Void Detection_Brent Waters.pptx
Due to the influence of mining technology, some coal mines will leave mined-out areas (or goafs) in the rock mass after mining. If the distribution law and influence scope of mined-out areas cannot be accurately explored and controlled, it will bring great potential safety hazards to subsequent coal mining and cause serious harm to adjacent houses, roads, bridges, railways, and so on.
Detection of Underground Voids in Ohio by Use of Geophysical Methods By Jens Munk and Rodney A. Sheets U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 97-4221 Prepared in cooperation with the OHIO DEPARTMENT OF TRANSPORTATION and the U.S. DEPARTMENT OF TRANSPORTATION Columbus, Ohio 1997
Acid drainage produced by abandoned coal mines continues to cause serious water pollution problems. Without knowing the exact location of the concealed openings and the extent of the mine, source abatement techniques are virtually impossible. Drilling is the only known method for accurately determining the location and extent of the mine voids, but this is extremely expensive.
of unexpectedly encountering intrusive bodies during future mining justifies the upfront detection efforts and associated costs. possible geophysical solutions – The benefit of well-planned and executed airborne magnetic surveying has already been demonstrated to the coal mining industry.
The accurate and effective detection of underground goafs and their water abundance is the key to ensure the safety of mine production. 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.
Literature survey on the advance detection of dykes in underground coal mine workings Prof. G A Fourie Laboratory for Advanced Engineering ... mining companies and the geophysical companies in terms of the needs of the one and the capabilities of the other. Clarke (1976 a,b) and Ziolkowski (1981) ...
An Interdisciplinary Response to Mine Water Challenges - Sui, Sun & Wang (eds) ©2014 China University of Mining and Technology Press, Xuzhou, ISBN 978-7-5646-2437-8 349 Tracing Groundwater Flow Paths in Coal Mine by Means of Geophysical and Borehole Flow Data
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.
The DC resistivity method is an important geophysical detection method in tunnels and coal mines. Some progress has been made in routine detection, advanced detection, and real-time monitoring, which facilitates the development of DC resistivity method. The observation mode, non-uniqueness of inversion, and real-time monitoring need further ...
Coal Mine Outburst. Home / Archive by category: Coal Mine Outburst. ... has been explored as a stress relief mechanism to prevent outbursts. The water pressure fractures the coal in advance of the face and provides for slow relaxation of stress through lateral movement enhanced by the presence of [.] Read More ... Geophysical detection of ...
COMPUTER-ASSISTED INTERPRETATION OF GEOPHYSICAL WELL LOGS IN A COAL DEPOSITIONAL ENVIRONMENT, ILLINOIS BASIN, KENTUCKY By jEFFREY J. DANIELS andjAMES H. SCOTT ABSTRACT Physical properties detected by well-logging probes include density, porosity, water
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