First Nations, ranchers, municipal officials and environmentalists hope to persuade a judge this week to force Alberta to revisit its decision to open one of the province's most important and best-loved landscapes to open-pit coal mining. At least nine interveners will seek to join a southern Alberta rancher's request for a judicial review of the province's decision to rescind a coal-mining policy that had …
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Nov 27, 2018 1. Introduction. In order to exploit the highly gassy and low-permeability Ji-15 coal seam in Pingdingshan No. 12 Coal Mine, the near full-rock protective coal seam is exploited for gas drainage prior to mining. However, the exploitation of such a protective coal seam will produce a large amount of gangue (Zhang et al. 2017a).If that gangue is emitted to the ground, waste gangue would put ...
Jan 01, 2011 Gangue backfilling can solve the environmental pollution caused by open accumulation of gangue while significantly reducing the amount of ground settlement great value for green mining. First, using the owe design test equipment to test the mechanical properties of coal gangue; Then, according to the mechanical properties of coal gangue to improve and design the backfilling equipment; Finally, by monitoring the effect of gangue …
Apr 14, 2021 Mining streaming company Anglo Pacific could be open to selling its thermal coal royalties to accelerate its transition away from the most polluting fossil …
Jan 18, 2021 Previously, open-pit coal mines were banned on category 2 lands, which included parts of the Rocky Mountains and foothills, and exploration and underground mining was limited in these areas. Exploration had normally been allowed on category 3 lands but mine development was restricted.
The main environmental challenges associated with coal mining include the handling of coal gangue, the escape of coalbed methane (CBM), mine drainage, soil erosion, and land subsidence. The Chinese authorities have been seeking to establish more effective policy systems to propel the implementation of green mining technologies.
Harrison says a proposed open-pit coal mine near his clients' property will have a profound effect. Mac Blades is one of the ranchers seeking the judicial review. Harrison says Blades owns land and...
GANGUE. Waste or undesired material in an ore. OPEN PIT MINING. Removing minerals such as gravel, sand, and metal ores by digging them out of the earth's surface and leaving a hole. ... An earthmover removes the overburden, and a power shovel extracts the coal, with the overburden from each new terrace dumped onto the one below. AREA STRIP MINING.
Aiming at problem of low coal mining rate and environmental pollution by gangue, replacement mining technology of source recovery by excavating large span roadway and backfilling with gangue is put forward in this paper. Then combined control technology of roof cable truss and coalside cable-channel steel is applied to support the large span roadway, its control mechanism is discussed and the ...
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