Geophysical Detection Of Water In Coal Mines

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Mine geophysical equipment

Mine geophysical equipment Website Name Water quality analysis Coal mine field Environmental field Chemical analysis detection of heading Geological structure exploration Engineering safety monitoring Detection of change zone of coal and strata Mine water inrush detection and automatic monitoring

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1 Introduction

The transient electromagnetic method is less affected by topography and has better detection effect on water accumulation in goaf of the coal mine but it has no obvious response to high-resistance anomaly [20 – 23] It can be seen that the previous comprehensive geophysical methods are mostly applied to hydrogeological conditions landslides

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Coal mining

Coal mining - Coal mining - Coal preparation As explained above during the formation of coal and subsequent geologic activities a coal seam may acquire mineral matter veins of clay bands of rock and igneous intrusions In addition during the process of mining a portion of the roof and floor material may be taken along with the coal seam in order to create adequate working height for

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Use of an automatic earth resistivity system for detection

Abstract Under the sponsorship of the US Bureau of Mines a surface-operated automatic high resolution earth resistivity system and associated computer data processing techniques have been designed and constructed for use as a potential means of detecting abandoned coal mine workings

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D'Appolonia Website

Geophysical techniques that are commonly used in coal mining applications include DC Resistivity – This method is effective in rapidly imaging mine workings to a maximum depth in the range of 50 to 100 feet which encompasses the majority of situations where mine subsidence problems at the surface are occurring A variation of the DC resistivity method (SP) has proven effective in defining

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Detect water accumulation in small coal mine_Langeo

Langeo/BTSK is specialized in the geophysical exploration instruments as DC resistivity/ip meter 2D/3D multi-electrode imaging system proton magnetometer digital seismograph transient magnetic system(TEM) high-power induced polarization system and so on Those all widely apply for different geophysical explorations as underground water mineral source city engineering geothemal

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Geophysics For The Detection Of Abandoned Mine Workings

Jan 01 2003While there are several geophysical methods that have been demonstrated for the successful detection of abandoned mine workings there is still no 'silver bullet' to solve the problem in every case The choice of geophysical method to detect abandoned mine workings should be made on a site specific and sometimes target specific level

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CDC

Mining Publication Field-Scale Void Detection in Coal Piles Using Resistivity Imaging Keywords Coal Electrical resistance of Lexington KY in which a geophysical technique known as vertical electrical sounding (VES) is used to scan for these voids VES operates by measuring the electrical field produced by a current in the ground at

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Detection of Underground Voids in Ohio by Use of

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

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Application of Comprehensive Geophysical Prospecting

And the distribution of mined-out areas and water accumulation in the coal mine are investigated in detail by using the comprehensive geophysical prospecting method of the transient electromagnetic method (TEM) and controlled source audio-frequency magnetotellurics (CSAMT)

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Fault Detection in Coal Seam by the Channel Wave Method

Fault Detection in Coal Seam by the Channel Wave Method safety of coal mining sometimes even causes serious casualties In underground geophysical exploration methods the detection range of direct current and its enhanced high resolution direct current method is between 10 and100 m The exploration distance of transient electromagnetic

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geophysical intrument for coal mine

Detect water accumulation in small coal mine_Langeo Langeo/BTSK is specialized in the geophysical exploration instruments for different geophysical explorations as Detect water accumulation in small coal mine geophysical intrument for coal mine geophysical instrument mine 2014-03-14 Coal chemical makes for environmental

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Impacts of Coal mining a Review of Methods and Parameters

The earliest study on the effects of surface coal mining operations on the water quality was reported 63 64 A study on water quality effects of coal mining in Jaintia Hills in Meghalaya 65 revealed that coal mining has increased the toxicity level to such an extent that the water is completely unfit for agriculture and human consumption and

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Application of Geophysical Method to Hidden Trouble and

To hidden trouble and saturated water surface detection of the stock coal dust dyke of the thermo-electric plant is still a different subject This paper discussed the stock coal dust dyke of Da-tang Liaoyuan the thermo-electric plart Use the geophysics methods such as high density electrical technique ground penetrating Radar(GPS) pontaneous electric field method etc to detect the stock coal

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geophysical intrument for coal mine

geophysical instruments used in mining Instrument used in coal mining - geophysical instruments used in mining Alpha Geoscience Sydney Australia Mining/Materials [24/7 online] Geophysical Survey Explorer DZD 6A Underground Coal geophysical intrument for coal mine Botswana - nixfixbiz Botswana Detection of Abandoned Underground Coal Mines

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5 Technologies For Locating Mining Workings

Washington DC The National Academies Press doi 10 17226/10212 If water in mine workings is reacting with its surroundings this might be detectable with a spontaneous potential survey Most of the seismic research on coal-mine detection has involved P-wave refraction seismology or S-wave (distortional i e shear waves) reflection

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Diffraction Characteristics of Small Fault ahead of tunnel

Free Online Library Diffraction Characteristics of Small Fault ahead of tunnel face in coal roadway/Caracteristicas de difraccion de falla pequena en la calzada de carbon de un tunel (SEISMIC PROCESSING Report) by Earth Sciences Research Journal Earth sciences Coal mining Safety and security measures Faults (Geology) Properties Mine gases Prevention Tunnels

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Coal Mine Inclined Shaft Advanced Detection Method and

Coal as one of the most abundant widely distributed and economically used energy sources in the world takes an important position in the energy structure Numerous mines are required in coal mining and as a significant means to improve coal productivity in mining areas inclined shaft development is adopted by most of the mines

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China Underground Water Detection Ground Water Detector

Underground Water Detection Ground Water Detection Equipment Instrument for Detection of Water Underground manufacturer / supplier in China offering Underground Water Detection Ground Water Detector Geophysical Resistivity Meter Geophysical Survey Equipment and Water Survey Equipment Detector Ultrasonic Drilling Hole Tester for Sale Koden Test Drilling Monitor Bored Pile Test

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Application of 3

Coal working face is damaged more and more seriously by water below the coal face floor There-fore floor water detection is a must in the process of extraction This article aims to introducing application and principle of the two-gateways parallel 3-D electrical technology and the arrange-ment of the observation system

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Rock mass characterization using geophysical methods

Rock mass characterization is a key component of any mining operation in regards to optimizing the mine design as well as guaranteeing safety in the mine Although geophysics has for a long time played a crucial role in mineral exploration its use in rock mass characterization is fairly recent and continues to

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Research on Ground of Penetrating Radar in the Coal Mine

Although many geophysical techniques have been used to detect the disaster geological anomalous body in the Huaibei coal mine company there are still many mining disasters happening The main reason is that the coal seam is rich of water in Huaibei coal areas If the ground water connects with tunnels it will cause the flood to collapse the coal seam

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Detection of Abandoned Underground Coal Mines by

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

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Hazard detection and comprehensive control technologies of

For integrated resource coal mines especially those that arethreatened by water inrush hazards it is recommended to adapt the principles of 'forecasting in advance detection before tunneling or mining' Undermine detection includes undermine drilling detection geophysical detection and geochemical detection

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Geophysical Applications to Construction Engineering Projects

An example of the use of ERT for tunnel detection is shown in Figure 7 This example comes from a proposed construction site in Alberta slated for development of a sewerage pumping station Historical coal mining operations in the area had resulted in an extensive tunnel network of unmapped abandoned mine shafts and stopes (Figure 7a)

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Appliation of Geohpysicial Technology in Forecast Brust

This paper introduces the development of coal mine in our country and indicates that geological structures and floor water are the major geological problems in coal mining Then it summarizes the present situation of geophysical methods and presents an introduction to some methods such as mine direct current method mine transient electromagnetic method and geological radar exploration Finally

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Coal Mine Inclined Shaft Advanced Detection Method and

Using tunnel boring machine (TBM) to construct inclined shafts in coal mines has become the main way for large-scale coal mines to enter deep mining faces However some engineering disasters such as water in rush and rock burst will occur when TBM crosses the aquifer and weak broken rock strata For the sake of efficient tunneling and advanced optimization of the safety plan and supporting

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Application of Geophysical Methods in Detecting Coal Mined

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

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Electrical resistivity of coal

At present most commonly used geophysical methods in the detection of coal fires are the magnetic method and the self-potential method due to their low cost and high efficiency These two methods have been used to delineate many coal fires in China (Zhang 2004 Shao et al 2014)

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Detection of coal mine workings using high

Under the sponsorship of the Bureau of Mines a similar system was designed and constructed for use in the detection of coal mine workings This report discusses the hardware and software aspects of the system and the application of the high-resolution earth resistivity method to the survey and mapping of abandoned coal mine workings

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Coal Exploration and Mining

COAL OIL SHALE NATURAL BITUMEN HEAVY OIL AND PEAT – Vol I-Coal Exploration and Mining - Lixun Kang Encyclopedia of Life Support Systems (EOLSS) Geophysical methods may also be used in conjunction with the down-hole logging methods The initial drilling program is often followed by further use of surface

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