Waste disposal during pit mining

A waste and mine technology, applied in open-pit mining, solid waste removal, ground mining, etc., can solve the problems of limited waste storage space and undesired

Inactive Publication Date: 2009-04-01
BHP BILLITON INNOVATION PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, usually the space available for waste dumping is lim

Method used

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  • Waste disposal during pit mining
  • Waste disposal during pit mining
  • Waste disposal during pit mining

Examples

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Embodiment Construction

[0038] Critical mine plan optimization involves determining when to schedule mining of ore blocks (or aggregates) in an orebody throughout the operational life, taking into account all geotechnical gradient constraints and mining and processing capacity constraints. A typical mining plan is determined as a block model that divides the mine (ie, the area where the material is mined) into blocks that generally include between 10,000 and 20,000 blocks or aggregates. It is generally determined that the optimum limit surface mining range for the mixed mine operation is determined through all the block models that have been input by the user. These ranges are used to limit the set of blocks to be considered in constructing detailed annual plans for the extraction of raw materials. Various block models are grouped into aggregates so that the user has a measure of control over how many such aggregates there will be. The preferred structures in these aggregates are inherited from the ...

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Abstract

A method, apparatus and computer program for pit mining with waste dumping is disclosed, in which material is extracted from an open pit and some of that material is sent to waste. The method optimises a joint extraction and waste refill schedule. The method defines a road network (14) having a plurality of nodes 16 with at least some of the nodes (16a) defining entry points to a plurality of waste dumps. The waste dumps are either in pit waste dumps or external waste dumps. Waste material is moved along the road network from a location in the pit to an entry node relating to one of the wastedumps and deposited at the waste dump. Material can be moved from external waste dumps to in pit waste dumps. The in pit waste dumps are determined from a block model providing a joint extraction andrefill schedule, and refill aggregate spaces are determined which comprise aggregates of blocks which have already been mined so that material is removed from those blocks to define a refill aggregate space which is then available to act as a waste dump for return of waste material to the pit.

Description

technical field [0001] The present invention relates to a method and device for waste cleaning in wells. Background technique [0002] Numerous mathematical models exist for surface mining to plan the extraction of material at a particular portion of a mine while considering various constraints. These mathematical models enable the development of a mining plan that will optimize the net present value of the mine over its entire operating life. [0003] Typically, a mine is divided into "blocks," typically rectangular prisms of raw material, or collections of blocks, that are mined according to a predetermined program to maximize the mine's net present value. This involves removing material from the mine and sending the material to waste, stockpiling or disposal. [0004] Generally, several mines can be exploited at the same time in a specific area, and the waste is usually piled up in a convenient place. However, often the space available for waste dumping is limited, and...

Claims

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Application Information

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IPC IPC(8): E21C41/26E21C41/00B09B1/00E21C47/00
CPCB09B1/00B09B1/006E21C41/32
Inventor 马克·朱克伯格彼得·M·斯通
Owner BHP BILLITON INNOVATION PTY LTD
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