Jul 30 2013· 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

Gravity and magnetic geophysical methods are passive They rely on no controlled sources but seek out naturally occurring variations in the earth s gravity and magnetic fields For this reason some military uses of these surveys have long included quiet detection of …

Coal mine fire is a serious problem in Jharia coal field India The coal mine fire can be detected with different techniques such as borehole temperature measurement thermo-compositional analysis remote sensing techniques thermo-graphic measurement and geophysical methods In this study various geophysical methods were used to detect

The paper based on the geophysical characters of the mined-out areas analyzes the principles of the three geophysical techniques which contain crosswell seismic ground penetrating radar GRP and TEM The method of crosswell seismic can be continuously measured to detect deep object and the technique of ground penetrating radar is widely applied for it has high resolution high efficiency and is

High-resolution 3D surface seismic method and former coal geophysics program of a US coal company Lawrence M Gochioco GX Technology Corporation Houston Texas Introduction One of the best kept technology secrets in US coal mining history was that there was once a robust coal geophysics program that was fully utilized by a local

----- 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 …

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

Keys to Successfully Using Geophysics to Detect Mine Voids and Covered Sinkholes Geotechnical Geophysical Geoenvironmental Geophysical Methods for Void Detection Geophysical Imaging of an Underground Coal Mine Geophysical Imaging of …

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

Geophysical detection of outbursts As with the in-seam seismic method coal seams act as a waveguide and electromagnetic waves launched into a coal seam are guided by it Changes in the conductivity of the coal or the surrounding rocks change the propagation characteristics of the wave

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

Geophysical Technologies for Detecting Underground Coal Mine Voids Lexington KY July 28-30 2003 APPLICATIONS OF THE ELECTRICAL RESISTIVITY METHOD FOR DETECTION OF UNDERGROUND MINE WORKINGS by William J Johnson D Appolonia Monroeville PA Introduction The need to understand the location of abandoned workings has recently been high-

GEOPHYSICAL METHODS IN EXPLORATION AND MINERAL ENVIRONMENTAL INVESTIGATIONS by Donald B Hoover Douglas P Klein and David C Campbell INTRODUCTION In the following discussion the applicability of geophysical methods to geoenvironmental studies of …

GEOPHYSICAL LOGS AS A SOURCE OF COAL BED DATA Geophysical well logs have been invaluable in the search for oil and gas because they provide rapid economical and detailed information on the thickness lithologic characteristics fluid content correlation structure and depth of strata penetrated by a well

The results indicated the presence of a good resistivity contrast between the coal seams and the surrounding formations The field results did not bear this out the resistivity responses of the coal formations on the profiles and sounding curves are not as clear as …

seismic technologies to detect mineral resources such as gold base metals and coal and also locate underground water reserves Read More ENGINEERING GEOPHYSICS Geophysical methods to provide accurate data about the structure of the subsurface - valuable information in the field of …

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 2D microtremor profiling technique can be applied to effectively locate the discarded goaves and their associated fracturing and caving zones The reliability of the goaf detection method has been validated by previous drilling data Undoubtedly the 2D microtremor profiling technique provides us a new geophysical method for goaf detection

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

Geophysical methods of exploration are means to collect geophysical data that can be used to prospect directly for economic minerals that are characterized by anomalous magnetic conductive or radiometric responses

geophysical methode for detecting coal geophysical methode for detecting coal 6 Core Technologies Make Jaw Crushers Work More Smoothly Contact Supplier geophysical methode for detecting coal iscea be A method for detecting and locating geophysical events geophysical methode for detecting coal We have developed a novel method to detect and

An Introduction to Applied and Environmental Geophysics Reynolds 1997 Applied Geophysics 2nd ed Telford Geldart Sheriff 1990 Exploration geophysics of the shallow subsurface Burger 1992 Whole Earth Geophysics Lillie 1999 An introduction to geophysical exploration Keary Brooks and Hill 2002 Applied geophysics Introduction

UNESCO EOLSS SAMPLE CHAPTERS GEOLOGY Vol V Coal Exploration and Mining Geology - Colin R Ward ©Encyclopedia of Life Support Systems EOLSS • Coal Marketing the procuring of markets or development of facilities to use the coal that will come from the mine over its working life • Mine Development the acquisition construction and commissioning of the plant

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 …

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

The application of geophysics in South African coal mining and exploration Article in Journal- South African Institute of Mining and Metallurgy 114 10 1-10 · October 2014 with 43 Reads

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

GSSI ground penetrating radar systems provide a rapid cost-effective method for collecting large amounts of bedrock depth information This data image is a low frequency GPR data set that was collected with a SIR 4000 and 400 MHz antenna

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 …

Jun 12 2017· Geophysical exploration can be effective in detecting and monitoring potential sources of coal mine water in-rushes and underground watercourses Generally in-mine seismic DC resistivity and transient electromagnetic methods are used for such purposes in China