How much does a continuous miner cost?
| EQUIPMENT OPERATING COST CALCULATIONS | ||
|---|---|---|
| PRODUCTION | # UNITS | TOTAL R&M |
| CONTINUOUS MINERS | 2 | $848.00 |
| SHUTTLE CARS | 4 | $416.00 |
| ROOF BOLTERS | 2 | $176.00 |
What is continuous miner in mining?
Definition of continuous miner : a machine that cuts and loads coal in one continuous operation.
What is a continuous miner used for?
Continuous miners cut and gather the material simultaneously and convey it into shuttle cars, haul trucks or a continuous haulage system. They are typically used for full-scale production in room-and-pillar mining operations.
When was the continuous miner invented?
1948
The Joy Ripper (1948) was the first continuous miner applicable to the room-and-pillar method.
How long is a continuous miner?
These miners have maximum cutting heights ranging from 3.1 m (122 in) to 4.6 m (181 in). For thin- to mid-seams we have the CM200 Series – from the thin- seam CM210 with a minimum cutting height of 0.76 m (30 in) to the mid-seam CM240 for seams of up to 3.4 m (134 in).
What is a coal cutter?
Definition of coal cutter : a hand-manipulated but power-driven machine that is used to detach coal from the vein usually by sawing or drilling.
What is bord and pillar method?
A system of mining in which the distinguishing feature is the winning of less than 50% coal on the first working. It is more an extension of the development work than mining. The second working is similar in principle to top slicing.
What is a roof bolter?
Roof bolters work in the mining industry in underground mines. They secure the roof of the mine with bolts to prevent mine cave-ins. They install safety jacks to support the roof. They drill holes where the bolts will be installed. Roof bolters use a self-propelled bolting machine to drill the holes and set the bolts.
What is a roof bolter machine?
Bolting rigs (also called mining bolters) are specialized mining machines designed for drilling holes and installation of safety bolts in roof and walls of underground mining excavations.
What are the various types of cuts given by coal cutting machine?
The coal cutting machine which are generally used to give either an undercut, middle cut, to cut or side cut for making a free face for efficient blasting operation are as follows: 1) Long wall coal cutters. 2) Short wall coal cutters. 3) Arc wall coal cutting.
What is Panel mining?
In coal mining: Ground control and roof support. From the submains, panel entries take off to subdivide further a block of coal into panels for orderly coal extraction.
What is continuous miner technology?
Continuous Miner Continuous miner is a mass production technology for underground mining that can be used in bord & pillar (room & pillar) rib pillar and shortwall methods. Continuous miner has been adopted for bord & pillar method in Anjan Hills/ NCPH of SECL and in Tandsi Mine of WCL.
What are the characteristics of continuous mining?
One of the pioneering elements about the continuous miner is the speed and efficiency with which it operates. The typical continuous miner is capable of producing five tons of coal in a minute; more than a miner from the 1920s would be able to produce in a single day.
How can underground mines compete with open cast mines?
Mass Production Technology• For survival of underground mines, it should compete with opencast mines• This is possible by improving the production and OMS of U/G mines• Even though CIL overall OMS has improved from 1.86 (1997) to 3.55 (2007) the share of manpower cost has remained around 45 to 50%.•
How long is a coal mine?
Used in room and pillar mining operations, the mine is often divided into a series of rooms, usually 20 to 30 feet (6.1 to 9.1 m) in length. The continuous miner rotates the oscillating steel drum to cut a way designated sections of the coal bed.