Examples of 'longwall' in a sentence
Meaning of "longwall"
A longwall is a method of mining where a long wall of coal or ore is mined in a single slice. It is commonly used in underground mining operations
Show more definitions
- A long wall of coal that is mined in a single slice.
How to use "longwall" in a sentence
Basic
Advanced
longwall
Inducer firing at longwall faces and in headings.
Longwall mining with roof coal extraction.
Down below the longwall and methodically.
Longwall top caving coal mining technology.
Dust control at the ends of longwall faces.
Work on longwall faces outbursts of coal and gas.
Construction of gateside packs for longwall faces.
He in dicated that all longwall faces were retreat faces.
Longwall systems first began to receive significant attention by.
The property is endangered by longwall coal mining.
Typical longwall ventilation system.
Dust control by exhaust ventilation methods on longwall machines.
A typical multiple entry longwall ventilation system is shown in.
Coal preparation by size in under ground longwall mining.
Extraction by longwall faces in steep seams.
See also
Improvement of working conditions at sloping caved longwall faces.
Longwall mining is extraordinarily efficient.
The extraction of dust from longwall face machines.
Longwall mining is a highly productive underground coal mining technique.
Improvement of working conditions at steeply dipping longwall faces.
Continuous and longwall mining have the severest dust problems.
Hard five quarters seam longwall.
For longwall faces.
Water and air on a longwall district.
On the longwall face there is a need to keep the immediate roof.
Educational resource on longwall mining.
Everything points to longwall mining retaining a preeminent position in the future in Community coal mining.
Capable of venting substantial firedamp flows from longwall goafs.
The installation of the longwall nearly doubled the capacity of the mine.
The extraction of dust from machines working on longwall faces.
The successful exploitation of the longwall unit depends upon so many factors.
Methane drainage from the roof and floor of longwall faces.
Several others followed, and longwall production increased drastically.
The other major form of underground coal extraction is longwall mining.
The system has the potential to deliver a longwall mine for a very low capital investment.
Further investigations into the control of dust at the ends of longwall faces.
Underground mining longwall equipment.
Methods of reducing dust formation and improving dust suppression on longwall faces.
Average daily output from one longwall in the years as below.
This was the initial phase of a planned extensive study of all longwall faces.
The control of dust at the ends of longwall faces has proved difficult.
Study and adaptation of methods of controlling dust generated by coal winning in longwall faces.
The end of the block that includes the longwall equipment is called the face.
There is widespread agreement that outbursts are more frequent in headings than at longwall faces.
To examine the distribution of dust concentrations around longwall coalfaces associated with modern mining techniques.
The second problem was the simulation of the goaf area accompanying longwall panels.
The disadvantages of longwall mining include,.
Investigations into methods of reducing dust formation and improving dust suppression on longwall faces.
Table 3 shows the proportion of longwall outputs won by these machines.
This is particularly true of the opera tion of transferring equipment for mechanized longwall faces.
