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Longwall mining

Longwall mining is a form of underground coal mining where a long single face of coal, known as a panel, is mined with a continuous cut across its entirety. Seams utilizing longwall panels are typically 4–20 ft (1.2–6.1 m) thick. The panel is typically 10,000–15,000 ft (3,000–4,600 m) long, but can be up to 20,000 ft (6,100 m) long and 1,000–1,500 ft…

History, Environmental impacts & Ventilation

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Overview

History

Layout

Ventilation

Equipment

Comparison with room and pillar method

Automation

Environmental impacts

In Canada

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Map overview Semantic statistics

Longwall mining

Nodes54
Edges53
Triples60
Avg. degree1.96
Density0.037037
Components1

How this topic connects Entity context

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Longwall mining

Top relations

related to External links · 22
Longwall mining → Australia, Bauer, Center, Circular, Clean Coal Project The, Costs, Department, Educational, Engineers, Illinois, Illinois State Geological Survey, Mine Subsidence Technological Society, Natural Resources, News, Planned Coal Mine Subsidence, Public Information Booklet Illinois, Public IntegrityInternational Longwall News, Robert, Subsidence Board NSW GovernmentThe, The Institute
related to history · 12
Longwall mining → By, England, Hopi, Miners, Northeastern Arizona, Once, Shropshire, Starting, The, This, Unlike, While
related to Automation · 5
Longwall mining → Briefly, Expectation-maximization, Longwall, Optimal Kalman, Technologies
related to Layout · 5
Longwall mining → Gate, In, Only, The, Where
has impact · 4
Longwall mining → As, In, Longwall, Many
related to Fracturing and water quality · 2
Longwall mining → Longwall, On
is a · 1
Longwall mining → form of underground coal mining where a long single face of coal

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Important terminology

longwall mining coal face water mine mines surface subsidence used shearer method conveyor gate typically ft along roof main goaf

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Longwall miningis aform of underground coal mining where a long single face of coal0.90text
methaneinstance ofbut return air carrying away coal dust and mine gases0.80text
carbon dioxideinstance ofbut return air carrying away coal dust and mine gases0.80text
depending on the geology of the coalinstance ofbut return air carrying away coal dust and mine gases0.80text
changing the course of riversinstance ofcausing problems0.80text
severely damaging building foundationsinstance ofcausing problems0.80text
roadsinstance ofIn some cases the subsidence causes damage to natural features such as drainage to water courses or man-made structures0.80text
buildingsinstance ofIn some cases the subsidence causes damage to natural features such as drainage to water courses or man-made structures0.80text
lakes or riversinstance ofLegislative assemblies have called for action to improve mine infrastructure to minimize disturbances.As a result of bedrock cracking from mining beneath waters0.80text
there have been groundwater losses of varying extentsinstance ofLegislative assemblies have called for action to improve mine infrastructure to minimize disturbances.As a result of bedrock cracking from mining beneath waters0.80text
Longwall mininghas impactAs0.60section
Longwall mininghas impactMany0.60section

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    Min side: 3
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