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Thursday, November 19, 2020 | History

2 edition of Coal mine hazard detection using in-seam ground-penetrating-radar transillumination found in the catalog.

Coal mine hazard detection using in-seam ground-penetrating-radar transillumination

Maureen M. Foss

Coal mine hazard detection using in-seam ground-penetrating-radar transillumination

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  • 8 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Pittsburgh, Pa .
Written in English

    Subjects:
  • Coal mines and mining -- Safety measures.,
  • Ground penetrating radar.

  • Edition Notes

    Bibliography: p. 26.

    Statementby Maureen M. Foss and Richard J. Leckenby.
    SeriesReport of investigations / United States Department of the Interior, Bureau of Mines ;, 9062, Report of investigations (United States. Bureau of Mines) ;, 9062.
    ContributionsLeckenby, Richard J.
    Classifications
    LC ClassificationsTN23 .U43 no. 9062, TN295 .U43 no. 9062
    The Physical Object
    Paginationii, 27 p. :
    Number of Pages27
    ID Numbers
    Open LibraryOL2343272M
    LC Control Number86600286

      OBJECTIVE: Design and develop a multi-static Ground Penetrating Radar (GPR) This modality has shown to have some capability to detect buried explosive hazards at standoff, but the detection performance has not reached that of close-in systems. There is a desire to detect targets from a distance, and investigations are underway using. On April 8, , MSHA notified underground coal mine operators of an interference problem between proximity detection systems (PDS) and respirable dust sampling devices when both devices are in use at the same time. MSHA has observed that dust sampling devices function properly. Mine operators who do not have proximity detection systems are not affected by this notice; dust. fixed probability of detection for low metal, metal, and non metal mines. Introduction Ground penetrating radar (GPR) is one of three sensors used in the Mine Hunter/Killer (MH/K) mine detection and neutralization system. The GPR used on the MH/K is a stepped frequency radar. Individually, each of the 20 antennas are excited with a sinusoidal tone.


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Coal mine hazard detection using in-seam ground-penetrating-radar transillumination by Maureen M. Foss Download PDF EPUB FB2

@article{osti_, title = {Coal mine hazard detection using in-seam ground-penetrating-radar transillumination}, author = {Foss, M.M.

and Leckenby, R.J.}, abstractNote = {The Bureau of Mines recently completed preliminary studies to demonstrate the feasibility of using GPR for in-seam hazard detection.

Investigations included air and coal tests for the purpose of checking equipment. Get this from a library. Coal mine hazard detection using in-seam ground-penetrating-radar transillumination. [Maureen M Foss; Richard J Leckenby; United States. Bureau of Mines.]. Underground coal mining is hazardous due to changing geological conditions.

One geophysical method showing promise for in-seam hazard detection is ground-penetrating radar (GPR). The Bureau of Mines recently completed preliminary studies to demonstrate the feasibility of using GPR for in-seam hazard detection.

Coal mine hazard detection using in-seam ground-penetrating-radar transillumination / By Maureen M. Foss and Richard J. Leckenby. Abstract. Bibliography: p. Mode of access: Internet Topics: Ground penetrating radar., Coal mines and mining. Publisher: [Pittsburgh, Pa Author: Maureen M.

Foss and Richard J. Leckenby. Coal mine hazard detection using in-seam ground-penetrating-radar transillumination. Abstract "Underground coal mining is hazardous due to changing geological conditions.

One geophysical method showing promise for in-seam hazard detection is ground-penetrating radar (GPR). The Bureau of Mines recently completed preliminary studies to. "Underground coal mining is hazardous due to changing geological conditions. One geophysical method showing promise for in-seam hazard detection is ground-penetrating radar (GPR).

The Bureau of Mines recently completed preliminary studies to demonstrate the feasibility of using GPR for in-seam hazard detection. This paper reports on a novel application of ground penetrating radar to a longwall steering problem in the coal mining industry. The main goal of the work was to determine whether a radar-based.

"Underground coal mining is hazardous due to changing geological conditions. One geophysical method showing promise for in-seam hazard detection is ground-penetrating radar (GPR). The Bureau of Mines recently completed preliminary studies to demonstr. 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.

Specific Hazards in Underground Mines. Accidents are always a combination of hazards and causes. Making the issue more comprehensible is the only reason for presenting the hazards listed below. The collapse and flood of underground workings may be a.

Compared with the ground detection equipment, the GPR system development is more difficult. Therefore, it is of Coal mine hazard detection using in-seam ground-penetrating-radar transillumination book significance to develop a novel GPR system for large-depth disaster detection in mine to improve the ability of the ultra-large-depth geological structure detection and guarantee safety mining in coal mine (Cheng et al., ).

Mining induces major shifts in pre-existing ground stresses, and because the stress redistribution and the rock mass response to it are highly interrelated, a successful geotechnical program for underground coal mining requires both adequate characterization of the materials present and identification of changing conditions and hazards as.

Coal mine hazard detection using in-seam ground-penetrating-radar transillumination. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, (DLC) This paper describes an algorithm for land mine detection using sensor Coal mine hazard detection using in-seam ground-penetrating-radar transillumination book generated by a ground-penetrating radar (GPR) system that uses edge histogram descriptors for feature extraction and a possibilistic K -nearest neighbors (K-NNs) rule for confidence assignment.

The algorithm demonstrated the best performance among several high-performance algorithms in extensive testing on a large real. During the process of the mine production, many geological factors exist in the coal seam and bring influence on the safety, such as the fault structure, fracture zone, collapse column, and so on.

It is the main performance to reduce the digging efficiency and to affect digging safety during the production of roadway excavation and face mining. According to the difference of the dielectric. Finally, as an example, the characteristics of ground penetrating radar images are analyzed based on the detection results of No water proof gate of Nanye coal mine.

It is well known that the mine water is one of the main hazards in the coal mining. Besides, the relative permittivity of the coal seam is and the relative permittivity of water is Moreover, the velocity of the electromagnetic wave in the coal mine is three times of that in the collapse column containing water.

Coal-mine-hazard detection using in-seam ground-penetrating-radar transillumination. Report of Investigations/ Technical Report Foss, M.M.; Leckenby, R.J. The Bureau of Mines recently completed peliminary studies to demonstrate the feasibility of using Ground-Penetrating Radar (GPR) for in-seam hazard detection.

Investigations included air. The use of ground penetrating radar (GPR) for detecting the presence of near-surface interfaces is a scenario of special interest to the underground coal mining industry.

The problem is difficult to solve in practice because the radar echo from the near-surface interface is often dominated by unwanted components such as antenna crosstalk and ringing, ground-bounce effects, clutter, and.

In this chapter, two of the major challenges in the application of ground‐penetrating radar in humanitarian demining operations are addressed: (i) development and testing of affordable and practical ground penetrating radar (GPR)‐based systems, which can be used off‐ground and (ii) development of robust signal processing techniques for landmines detection and identification.

Using Ground Penetrating Radar for In-Seam Crack Detection in Potash. Chris Kelly 1, Dean Gerhardt 2 and John Unrau 2. 1 Mosaic Potash, Ground Penetrating Radar (GPR) is the technology having the highest potential for success as a detection system.

Crack/Clay seam detection at the Colonsay mine. GPR (ground penetrating radar) is an efficient technology that has been used considerably in subsurface exploration. The modern tools based on the technology are remarkably efficient too.

These tools can gather, analyse, assess and process huge chunks of data, allowing the personnel to gain valuable decisions. Benefits of using GPR in Mining. Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining.

Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many.

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.

planners, and other mining staff with limited or no geophysics background. This paper provides a very brief overview of the book by summarizing key sections and selected examples.

In doing so, the value of geophysics to solving a range of coal mining and exploration problems is highlighted. Keywords geophysics, coal, old workings, dykes, sills. Ground penetrating radar (GPR) has been investigated by the U.S.

Bureau of Mines Pittsburgh Research Center for its potential to determine roof hazards in underground mines. GPR surveys were conducted at four field sites with accompanying ground truth to determine the value of GPR for roof hazard detection.

MSHA and the mining industry have worked together to develop potentially life-saving technology that can stop machine motion and/or send a warning signal to the machine operator when it detects a person or object in the machine’s path.

Mine operators are increasingly installing these proximity detection systems on mining equipment in surface and underground mines to prevent. Ground penetrating radar technique to locate coal mining related features: case studies in Texas.

Master's thesis, Texas A&M University. Texas A&M University. Available electronically from http: / / / /   This paper reports on a novel application of ground penetrating radar to a longwall steering problem in the coal mining industry.

The main goal of the work was to determine whether a radar-based system could be used to detect coal-rock interfaces in order to establish a suitable mining horizon within the coal seam. Ground Penetrating Radar (GPR) has been in use in Saskatchewan potash mines for nearly 40 years.

GPR is an excellent rock imaging tool, and it works particularly well in salt due to the low dielectric properties. The vast and remarkably flat potash deposits in Saskatchewan are occasionally disrupted by geologically anomalies.

CSES’s VISOR ground-penetrating radar is designed for buried mine and similar explosives detection using ultra-wideband ground-penetrating radar arrays and automatic target recognition. Mine Gases - Oxygen Mine Act also requires not more than % carbon dioxide Respiratory quotient gives ratio of CO 2 expelled to the O 2 consumed Respiratory requirements for different levels of activity are given in Table on p.

34 of your book; you should learn these for design purposes, especially for low-quantity drifts, tunnels.

However mining the coal has proven to be very dangerous and has caused many accidental deaths over the years. Keeping this in mind we have designed an intelligent system which can be used on helmets of these underground coal miners and can monitor/analyze a few major hazardous parameters found in these mines in real time.

This includes humidity. This thesis is comprised of three chapters, each detailing a specific case-study with its own unique use of ground penetrating radar (GPR) in an underground stone mine.

Chapter 1 describes the benefits and limitations of GPR as the geophysical method of choice for karst void detection and mapping in an underground mining scenario. Mb: Bulletin 72 - Occurrence of Explosive Gases in Coal Mines This report presents the results of an investigation begun ny the government in the summer ofthe investigation being started under the immediate supervision of Dr.

Holmes and continued under him as director after it was transferred to the Bureau of Mines inthe field studies being completed in the spring of CHAPTER 5: HAZARD IDENTIFICATION AND RISK ANALYSIS - CASE STUDIES 51 Case study of an iron ore mine Case study of a coal mine 52 59 CHAPTER 6: DISCUSSION AND CONCLUSION 65 Discussion Conclusion 66 69 CHAPTER 7: REFERENCES To test the In-Seam Seismic (ISS) method for void detection, two ISS reflection surveys and one transmission survey were acquired at a temporarily abandoned mine near Hurley, Virginia (Figure ).

The Sassy No. 1 Mine, owned by TECO Energy, was selected to demonstrate void detection and location because it is well-mapped with known outlines. ground penetrating radar (GPR) performs in characterizing near surface coal mine related features.

Coal mining in the Eocene – Paleocene Wilcox Formation (Fisher, ) was carried out at Malakoff (near Dallas), Texas and Bastrop (near Austin), Texas in the first half of the 20th century: generally during the period from to Most. City sensors are to be found in detection equipment used in the world’s main coal mining regions.

The top four regions are China, which in accounted for just under 50% of world coal production, the USA with a 14% share, India which accounts for 6% and Europe, 4%. In the first case, coal has to be excavated in mine and brought to a surface plant.

There, the coal can be gasified in the reactors of different type, such as fixed bed, fluidized bed or entrained flow. In the second case, the coal is gasified directly in the coal seam (deposit) using boreholes. Gases found in the Coal Mines The danger from explosions is ever present in coal mines.

Ignition of naturally occurring methane gas can be disastrous. This gas is known in the pits as firedamp, a mixture of methane gas and air. Methane (CH4) is odorless, tasteless, colorless, and lighter than air which means it is found near the roof of the.uncertainty, complexity, high costs and mine worker‘s safety [3].

The emission of toxic gases from coal seam in turn leads to air pollution in mine area. It severely affects mine worker‘s health [4]. The deeper a mine is, the worse and more dangerous miners‘ work is and the more expensive miners‘ work is.for improved safety through reduction in personnel in the most hazardous coal cutting areas.

In situ, real-time coal seam measurements using the Special Technologies Laboratory (STL) ground penetrating radar (GPR) technology were shown feasible by a demonstration in a Utah coal mine on Ap