Method and apparatus for remote self-propelled conveying in mineral deposits
a technology of self-propelled conveying and mineral deposits, which is applied in the field of mining, can solve the problems of limiting the penetration depth of mining, prone to damage, and limiting the assembly of conveying, and achieves the effect of accurately and precisely determining the position
Inactive Publication Date: 2006-02-23
MRAZ DENNIS
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- Application Information
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Benefits of technology
[0012] Accordingly, it is an object of the present invention to provide a method and apparatus for advancing a remote conveying assembly without causing excessive axial forces within the assembly, by providing tractive forces at multiple locations along the length of the assembly.
[0013] Another object of the present invention is to provide a method and apparatus for remote conveying that does not require electric power at each conveying section of the conveying assembly.
[0014] Another object of the present invention is to provide a method and apparatus for extending the conveying assembly that minimizes the time required for extensions.
[0015] Another object of the present invention is to provide a method and apparatus for protecting the remote conveying assembly, electric cables and other services from damage by rock falls.
[0017] Another object of the present invention is to provide a method and apparatus for accurately and precisely determining the position of the mining machine within the seam.
Problems solved by technology
As a consequence, it becomes difficult to steer the mining machine located at the front of the combination and the conveying assembly itself can become unstable, which limits the penetration depth of mining.
Furthermore, pulling the conveying assembly at the rearward end when it becomes entrapped by a rock fall may sometimes cause the conveying assembly to brake.
Where open conveyors are used, they are prone to damage by falls of rock from unsupported roof.
Electric cables, control cables and hoses for the remote mining machine that lay atop the conveying assembly are also prone to damage by rock falls.
A remote mining machine located at the forward end of the conveying assembly may become entrapped by fallen rock and the traction force of the conveying assembly may not be sufficient to extract the mining machine.
This type of known method uses complicated software that requires several minutes to initiate during which the mining machine cannot be moved.
Furthermore, this system is expensive, costing more than $100,000.
Method used
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Embodiment Construction
[0051] Referring to FIGS. 1 through 8, a remote mining machine I excavates material in the mine opening 2 within a seam 3. Opening 2 could also be a tunnel opening. The mining machine 1 discharges the excavated material onto the receiving module 4 of the self-propelled conveying assembly 5. The self-propelled conveying assembly 5 consists of the receiving module 4, a plurality of intermediate modules 6 and a drive module 7. The mining machine 1 is connected to the receiving module 4 with extenders 12, shown in the drawings as advancing cylinders, which are used to advance the mining machine 1 into the mining room 2 and also to directionally steer it. Advancing cylinders 12 can steer the mining machine 1 by extending in different amounts or at different rates on either side of the mining machine 1. The receiving module 4 also carries braces 8. Bracers 8 typically take the form of side jacks and are normally used for steering the receiving module 4 within the mine opening 2. However, ...
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A method and apparatus for the mining of material from a seam includes a mining apparatus and a self-propelled conveyor capable of advancing or retreating in the seam on its own power and an advancing and steering arrangement for the mining apparatus. The self-propelled conveyor, electric cables and other services for the mining apparatus are protected against roof falls. The power input for the self-propelled conveyor is provided by continuous drive shafts powered at either one or both ends of the conveyor. Alternately, a unique reciprocating conveyor mechanically powered at either one or both ends of the conveyor is provided for conveying of aggregate material. An apparatus for assembling the conveyor and receiving aggregate material is provided at the rear end of the conveyor. A method and apparatus for accurately and precisely navigating the mining machine is disclosed.
Description
[0001] This application is a Continuation-In-Part of U.S. patent application Ser. No. 09 / 250,689, filed Feb. 16, 1999.FIELD OF THE INVENTION [0002] The present invention relates generally to mining and specifically to conveying in remote mining of bedded mineral deposits. BACKGROUND OF THE INVENTION [0003] Known methods of remote mining in bedded mineral deposits such as coal seams employ a mining machine that excavates mine openings to some distance from the seam exposure on the surface and means of conveying are required to transport the excavated material to the surface. In most of the present systems, conveying machines consisting of multiple conveyors are advanced into the mine openings from the surface. For example, U.S. Pat. Nos. 5,112,111, 5,232,269 and 5,261,729 to Addington at al. disclose an assembly of conveyors and a mining machine advanced into the seam without interrupting the flow of aggregate material by separate means designed to pull at the forward end and push at...
Claims
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Login to View More IPC IPC(8): E21C29/00E21C25/58E21C27/24E21C35/20E21F13/08
CPCE21C25/58E21F13/083E21C35/20E21C27/24
Inventor MRAZ, DENNIS
Owner MRAZ DENNIS