Search results for keyword: longwall
Steel for mining high-strength round link chains (GB/T10560-1989)
High Strength Circular Ring Chain Steel for Mining Uses
High strength circular ring chain steel for mining uses is a kind of high-strength alloy steel which is composed of two or more elements selected from manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel and copper. The Circu......
1069 
Hannah
Mine underground development method
Underground Mining Methods
Underground mining is a method of mining that involves the excavation of tunnels and underground passages. The majority of underground mining operations involve the extraction of ore and other materials from hard rock deposits. However, it is also possible to extract co......
Underground mine development design
Surface and underground mining
Surface mining and underground mining are two forms of mining used to extract minerals and other geological materials from the Earth. Surface mining is used when minerals and rocks are located within a few metres of the surface. This method is used primarily in the ......
Design of moving range for underground mine mining
Introduction
Underground mining is a process in which minerals are extracted from beneath the earth by tunneling and cutting away from above. It requires expertise, planning and safety considerations in order to ensure that the excavation is carried out properly and efficiently. This paper will d......
Underground Mining Method Design
Underground Mining Methods
Introduction
Underground mining is the process of extracting minerals and ores from underground. Underground mining has been around for centuries and though the mining techniques have changed drastically over the years, the idea is still largely unchanged. Underground ......
Open-pit development of ore deposits
Open-pit Mining
Open-pit mining, also known as open-cut mining or opencast mining, is a surface mining technique used to extract a near surface deposit of mineral resources. This form of mining differs from extractive methods that require tunneling into the earth, such as longwall or room-and-pil......
Jinling Gold Mine
Jinlin Gold Mine
Jinlin Gold Mine is located in the southeastern part of Liaoning Province, China. It is 700 meters deep, making it the deepest gold mine in China. The mine was opened in 1977, and is one of the largest gold mines in the country.
The ore deposit of the mine is located in a metamo......
Metallurgical Plant and Mine Structure Design
Metallurgical Plant Facility Design
Metallurgical plant facility designs are typically a complex and involved process. This process usually involves creating a plan for the facility that outlines the size, design, and construction needs of the plant. Generally, this starts with a feasibility stud......
Ground pressure of longwall working face
Large long wall base of pressure
Long wall mining has become most common method of underground coal mining, because it improves the productivity, reduces production costs and provides a safe working environment for all miners. Long wall mining is a type of underground coal mining in which a part of......
hydraulic coal mine
Overview of Underground Coal Mining
Underground coal mining is one of the oldest and most efficient methods of extracting coal from its natural environment. In most cases, it involves using a continuous mining machine to move along the coal seam, extracting coal from the ground as it moves. The p......
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