Mining machine and mining method

A mining machine and mine seam technology, applied in ground mining, underground mining, special mining, etc.

Inactive Publication Date: 2005-06-01
HOLMES LIMESTONE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These systems also have the disadvantage that even if a round hole is cut there is often a potential settlement problem years after the mining operation is complete

Method used

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  • Mining machine and mining method
  • Mining machine and mining method
  • Mining machine and mining method

Examples

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Embodiment Construction

[0026] A mining machine in accordance with the principles of the present invention is indicated generally at 20 in FIGS. 1 and 2 . As shown, the mining machine 20 is depicted in terms of its operational relationship relative to the cutting hole H during the entry phase of a typical slope mining operation. For orientation, the mining machine 20 is shown as it advances from right to left in the cutting hole H, as shown in FIGS. 1 and 2 .

[0027] The mining machine 20 has as a major component a main frame assembly, indicated generally at 21, which is connected to a conveyor extending to the surface. The main frame assembly 21 has as the main structural member a platform 22 which may be a downwardly bent U-shaped element, as best seen in FIG. 9 . The upper surface of the platform 22 carries an attachment housing 23, and the housing 23 may also be a U-shaped structure bent downward. Still referring to FIGS. 1 , 2 and 9 , housing 23 encloses the main frame drive means generally ind...

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PUM

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Abstract

A mining machine (20) for combined entry and retraction cutting of subterranean seam material, comprising: a movable main frame (21); a wing (50, 51) extending forwardly of the movable main frame; a cutter assembly (100) positionable near the end of the wing to drill holes in the material when the direction of travel of the wing and main frame is in line; a pivotal connection (130) between the main frame and wing ) for positioning the wings at an angle to the direction of movement of the main frame; and a mechanism (80) for moving the knife assembly along the wings during retraction of cutting material to cut material adjacent the wings.

Description

technical field [0001] The present invention generally relates to a method and apparatus for mining a mineral, such as coal, from an underground seam. More particularly, the present invention relates to methods and apparatus for mining highwall underground seams in an efficient, safe and cost-effective manner. More particularly, the present invention relates to methods and apparatus for conducting slope and underground mining operations wherein substantially the entire ore seam can be mined, ground can be selectively subsided into the mined seam, and the apparatus and method are comparable Simple, yet highly productive. Background technique [0002] Mining equipment has long been the key to cost-effective mining operations. Initially, underground mining of thicker seams was a major concern of the coal mining industry. With the massive reduction of thick seams, and the additional safety and health awareness concerns of such mining, more attention has been focused on mining...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21B10/32E21C25/28E21C27/24E21C25/58E21C41/18
CPCE21B10/327E21C25/58E21C27/24E21C41/16
Inventor M·R·马莱特R·A·赫梅尔
Owner HOLMES LIMESTONE CO
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