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Longwall Mining Potential

Prediction of Longwall Methane Emissions and the

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Continuous enhancements in longwall mining equipment have significantly improved face advance rates. This increasing longwall advance rate has generally outpaced the continuous miner develop-ment section advance rate. One potential solution is to decrease the relative amount of development min-ing required by increasing the size of longwall pan

Assessment of Potential Impacts to Surface and

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The potential impact of longwall mining on the hydrogeological environment typically results in a drop in the groundwater table culminating in water loss to the surface by altering water flow paths [4]. In fact, water flow in the Cataract River of Australia ceased in 1994 as a result of mining-induced

Longwall mining (Book)

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Abstract. Longwall mining theory and practice in the USA is covered. Chapters discuss: US panel layout, strata mechanics, design considerations for panel layout, powered supports, design and application of powered supports, methods of coal extraction with the shearer and plow, coal transportation, methane and dust control, longwall face move, surface subsidence and instrumentation

CDC - Mining Project - Ventilation of Longwall Faces

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Apr 01, 2014 Schatzel SJ, Krog RB, Dougherty H [2017]. Methane emissions and airflow patterns on a longwall face: Potential influences from longwall gob permeability distributions on a bleederless longwall. Transactions of the Society for Mining, Metallurgy, and Exploration, 2017, Vol. 342, No. 1

Assessment of potential impacts to surface and subsurface

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Jan 01, 2017 The potential impact of longwall mining on the hydrogeological environment typically results in a drop in the groundwater table culminating in water loss to the surface by altering water flow paths . In fact, water flow in the Cataract River of Australia ceased in 1994 as a result of mining-induced strains from longwall operations in the Bulli

The future development potential of chain haulage

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Sep 17, 2019 G. Philipp/F. alık The future development potential of chain haulage technology in longwall mining and an appraisal of its application limitations 16 Mining Report 150 (2014), No. 1/2 1.3 Current situation In modern longwall mining for coal and potash, chains are still a key and indispensable element. Estimates sug

Geohazards assessment in longwall coal mining using

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The more common geohazards in longwall coal mining which are focused in this research include rockburst, coalburst and coal/gas outburst. Rockburst is a common type of geohazards resulted in dynamic instability of the underground structures in longwall mining, which directly affects the safety of miners, equipment and mining operations

A review of overburden fracturing and changes in

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CHARACTERISTICS DUE TO LONGWALL MINING . Hadi Nourizadeh. 1, Ismet Canbulat. 2, Joung Oh. 2, Chengguo Zhang. 2, Naj Aziz. 3, Ali Mirzaghorbanali. 4, Kevin McDougall. 4. ABSTRACT: Longwall mining is a major mining method to extract thick, flat -lying and extensive seams. Due to the nature of this mining method, the overlying strata move continuously

Monitoring network, sensors developed to improve longwall

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Oct 09, 2020 Despite longwall mining being an efficient way of extracting coal, it produces dangerous methane gas that has the potential to lead to explosions in underground mines. Researchers from West Virginia University are combating this issue by developing an improved methane monitoring network to increase the safety of longwall mines

Mining Magazine - Longwall - Page 1

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The latest longwall articles from Mining Magazine - Page 1

A Methodology to Assess the Potential Impacts of

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Public and regulatory focus on the potential impacts of longwall mining on streams dictate that potential surface effects of undermining must be contained within acceptable levels and appropriate restoration and/or mitigation measures can be implemented during and after mining

A General Review on Longwall Mining-Induced Fractures in

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It is believed that underground longwall mining usually produces fractures in the surrounding rocks. On the one hand, mining-induced fractures not only degrade the strength of the rock mass but also serve as main channels for fluids (e.g., water and methane). Fractures facilitate the failure of the rock mass and fluid inrush into working spaces

Mining Engineering Online

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Tests were conducted to determine properties of four foam agents for their potential use in longwall mining dust control. Foam has been tried in underground mining in the past for dust control and is currently being reconsidered for use in underground coal longwall operations in order to help those operations comply with the Mine Safety and Health Administration’s lower coal mine respirable

FAMUR progresses with automated longwall technology

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May 24, 2021 Remote monitoring of the longwall system operation is made possible by the event-oriented intelligent application for visualisation and control of the mining process. The operator has an overview of the basic process parameters and is informed by the system about potential hazards to the longwall operators and production disturbances

Evaluation of seismic potential in a longwall mine with

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Jan 01, 2018 Mining hazard maps were created to combine four geologic criteria that showed geological variability that could affect longwall-induced stresses in the sandstone and abutment stresses in the gateroad pillars . The geologic criteria in descending importance were overburden depth, longwall caving height, interval to sandstone above the Pocahontas No. 3 seam, Sandstone 1 thickness, and sandstone

Longwall Mining - an overview | ScienceDirect Topics

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Selecting longwall mining at depths 600 m, since both surface mining and bord-and-pillar mining may not be feasible. Insuring the import of spare parts remains easier than it was in the past, and looking into the potential for indigenous manufacture thereof

Evaluation of the rockburst potential in longwall coal

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Mar 24, 2017 The main aim of this paper is to study the potential of rockburst in a longwall coal mine by using of passive seismic velocity tomography and image subtraction technique. For this purpose, first by mounting an array of receivers on the surface above the active panel, the mining-induced seismic data as a passive source for several continuous days were recorded

Three potential longwall mining methods for thick coal

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Three potential longwall mining methods for thick coal seams in the western United States [Oitto, Richard H.] on Amazon.com. *FREE* shipping on qualifying offers. Three potential longwall mining methods for thick coal seams in the western United States

Longwall Mining - West Virginia Highlands Conservancy

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Longwall mining is a form of underground coal mining that allows industry to mine massive blocks of coal more efficiently and with fewer miners than previous mining methods. Once done with pick and shovel and mules, underground coal mining progressed to using machines that could extract more coal at a faster rate of production

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