2024年12月16日 · High-wall mining is a hybrid mining method used when surface mining reaches its economic or technical limits. It involves mining coal seams from the exposed surface of an open-pit mine, extending into the high wall (the vertical face left behind).

2019年9月1日 · Highwall mining is a technique for attaining additional coal recovery after the economic strip limit is reached in surface mining. It involves remote deployment of a continuous miner in openings beneath the final highwall, with no personnel entry. Many candidate areas for highwall mining have thick and steeply dipping seams.

The configuration of the HWM is such that it is capable of mining coal seams ranging from thirty inches to sixteen feet in thickness and to depths of up to one thousand feet. The ability to mine this range of coal seam heights is accomplished by fitting interchangeable cuttterhead modules to the HWM for low, medium, or high seam mining ...

2016年4月12日 · PDF | General Description about high wall mining and its components. | Find, read and cite all the research you need on ResearchGate

2014年9月1日 · This report discusses the highwall mining method, its suitability for the coal seams in the state of West Virginia, and the potential improvement to mining safety.

Highwall mining is a relatively new semi-surface and semi-underground coal mining method used to extract such remaining coal reserves after the economic threshold imposed by the stripping...

2010年1月1日 · Highwall mining is a mining method to extract coal from a final boundary in opencut mining, trench mining or contour mining. This boundary may have been reached because of economic constraints (economic strip limit) or geographic constraints, such …

2022年1月7日 · Highwall mining combines the advantages of open-cut and underground approaches, and allows soft and thick coal seams to be mined at the rear of the coal rib at the...

2014年1月1日 · Highwall mining is a highly mechanized coal mining method associated with several advantages, such as a very high production rate (approximately 3,000 t/d) and low production costs. There is no requirement for underground support, ventilation, or blasting. Production leads to added recovery, which is otherwise lost in the ultimate pit.

2017年7月6日 · The book will equip readers in understanding the complex, multiple seam scenarios for highwall mining, and its design for maximum coal recovery from any given site with better economics, which will aid the mining companies in extracting locked-up coal following the safety norms to avoid hazards and minimise instability issues.