Open pit mines are one of a plurality of types of mines that can be used to extract ore from the Earth. However, instead of using tunnels or other types of underground extraction processes, open pit mines remain open to the environment. They may also be known as surface mines.
The accompanying drawings, which are incorporated in and form a part of this application, illustrate and serve to explain the principles of embodiments in conjunction with the description. Unless noted, the drawings referred to this description should be understood as not being drawn to scale.
Reference will now be made in detail to various embodiments of the present technology, examples of which are illustrated in the accompanying drawings. While the present technology will be described in conjunction with these embodiments, it will be understood that they are not intended to limit the present technology to these embodiments. On the contrary, the present technology is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the present technology as defined by the appended claims. Furthermore, in the following description of the present technology, numerous specific details are set forth in order to provide a thorough understanding of the present technology. In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present technology.
Unless specifically stated otherwise as apparent from the following discussions, it is appreciated that throughout the present description of embodiments, discussions utilizing terms such as “receiving”, “storing”, “generating”, “transmitting”, “inferring,” or the like, refer to the actions and processes of a computer system, or similar electronic computing device. The computer system or similar electronic computing device manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission, or display devices. Embodiments of the present technology are also well suited to the use of other computer systems such as, for example, mobile communication devices.
Embodiments of the present invention enable the automatic and efficient generation of an open pit mine design. In the following discussion, the automated open pit mine design develops an open pit mine design that utilizes a least amount of waste removal criterion while retrieving a majority of the ore delineated by the economic model is obtained. In another embodiment, the open pit mine designer provides a design that results in the least amount of waste needing to be removed while recovering approximately all of the ore delineated by the economic model.
In other words, any moved earth is purely a cost factor to the mine. Therefore, by utilizing the open pit mine designer described herein to plan a mine that requires less earth/waste removal to obtain the same amount of ore, the mine will make the same amount of money, e.g., acquired ore, while reducing the ancillary costs of waste removal, and enforcing the engineering constraints to ensure sufficient structural integrity of the bench walls and allowing efficient routes for earthmoving equipment.
With reference now to
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In general, the elevation level refers to a cross-section for the open pit mine design at a given elevation. For example, if the open pit mine economic shell 108 includes an elevation range of 300 meters, that is, the bottom of the mine is 300 meters below the top of the mine, the cross-section 175 would include only a specific elevation, e.g., 150 meters. For example, in one embodiment if bench height 155 is 15 meters there may be 20 cross-sections 175 for an open pit mine design having a desired depth of 300 meters. In another embodiment, the number of cross-sections for the mine design may be based on other metrics such as those discussed herein.
With reference now to
For example, if the bench height 155 is 15 meters and the road grade is determined to be 10%, then the length 188 for the ramp construct portion 185 would be 150 meters. In one embodiment, ramp construct 185 may additionally utilize information, such as but not limited to, a stack height, e.g., a number of benches 192, a stack slope: based on material failure; a step out width and a switchback haul road-to reach a location without going around the pit.
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In one embodiment, metric receiver module 310 provides the received information to user input module 320. User input module 320 may optionally receive additional input from user modifiable information 325. In general, user modifiable information 325 may include information related to user adjustments such as ore retrieval ranking, mining timeline information, vehicle availability, fuel availability, dump location changes, updated geological information and the like.
User input module 320 provides the information from metric receiver module 310 and any user modifiable information 325 to open pit mine designer module 330. In one embodiment, open pit mine designer module 330 utilizes the input to develop an open pit mine design 200 with an underlying criteria to develop a design with the least amount of waste that needs to be removed to obtain the ore delineated in the economic model.
With reference now to
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With reference now to 404 of
As described herein, the geological information in conjunction with the vehicle characteristics is utilized to determine the slope information 150. In one embodiment, the slope information 150 may additionally utilize one or more default characteristics or design specific criteria. For example, the haul road ramp width 158 may be determined by a default of approximately 3.5 times the width of the widest truck to allow passing between ascending and descending vehicles. In another embodiment, such as close pits, the haul road ramp width 158 may use a single width road default width. In one embodiment, the maximum grade slope may be a 10% default. Although a number of defaults values are provided herein, the default values are representative of one embodiment and may be adjusted in different implementations.
With reference now to 406 of
In other words, one embodiment automatically generates the open pit mine design based on the least amount of waste to be removed while obtaining a majority of the ore delineated by the economic model 108. For example, one degree of slope of road, over the life of the mine, may be worth millions or billions of dollars in waste removal costs.
In general, open pit mine designer module 330 develops a number of elevation cross section layers 175 such as shown in
For example, in one embodiment, open pit mine designer 300 may make recommendations as to which vehicles may be used. For example, the open pit mine design 200 iteration can be performed for different trucks with different geometries (weight restrictions, slope restrictions, etc.) to provide a metric based evaluation for the best truck for the job thereby incurring further cost savings.
For example, by utilizing a smaller truck the resultant design would have a narrower ramp width 158, lower weight restrictions, lower slope restrictions, or the like which could reduce the amount of waste to be removed. Conversely, utilizing larger trucks would require a wider ramp width 158, higher weight restrictions and higher slope restrictions which may increase the waste to be removed, but the increase in waste may be offset by the time savings generated by the increased load capabilities.
In another embodiment, the open pit mine design 200 may be revisited throughout the actual life of the mine as user modifiable information 325 is provided. One example of user adjustable criteria is the order in which the ore should be retrieved in a mixed ore mine.
For example, if a mine has a number of different ores, e.g., gold, platinum, and the like, the initial design may have been made without an initial emphasis on which ore was the higher priority but instead on the most efficient way of removing the ore. In another embodiment, the initial design may have been predicated on removing one ore in a more expedient fashion. For example, the gold may have been a primary focus due to a high gold price point.
However, in a changing market environment, such as during the time of the mine planning and the extraction process, the market may begin to show an exponential increase in the value of platinum while the gold price may be rising linearly or even becoming stagnant. As such, it would be in the extractor's best interest to adjust the mine plan to focus on extracting the platinum.
Utilizing the tools described herein, one embodiment allows a mine plan to be adjusted, or redesigned, by adjusting an existing metric or adding a new metric and then performing a mine plan redesign. For instance, in the above example, the metric that is changed is the value of the extracted ore or the importance of the ore to be extracted. In other words, whereas the previous mine design either did not place an emphasis on the extraction of one ore over another or focused on the extraction of the gold over the extraction of the platinum, the mine redesign will adjust a mine design metric to place a priority on the extraction of platinum.
In another example, the mine may be a mine that was planned according to a sampling of the platinum and gold materials in the mine. Thus, a mine with a large gold ore potential and a smaller platinum ore potential is planned with an emphasis on reaching one or more of the larger gold deposits first. However, once the gold ore is reached, for any number of reasons, it may be realized that the gold ore is not as high of a quality as initially expected. As such, the mine owners may want to change the emphasis from the gold ore to the platinum ore, thus requiring a redesign of the mine plan.
By adjusting the metric of priority as to which ore should be extracted first, the mine plan would be redesigned. In addition, the redesign would also include any changes that have been made to the area since the open pit mining had begun. For example, initially reaching the gold ore may have included the construction of haul roads, a waste storage/disposal location and a change in the topography of the mined landscape. In one embodiment, each of these metrics is also adjusted, added to, or otherwise accounted for in the open pit design during the development of the redesigned plan. Therefore, when the emphasis changes from gold to platinum, the redesigned plan not only incorporates the changes needed to access the ore, but the open pit mine designer 300 also accounts for the existing haul roads, location of the waste storage/disposal and other established metrics while updating the open pit mine design.
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Similarly, vehicle characteristics that will be delivering the waste may be used with waste geological information to determine the slope information for the waste pile. In general, the waste storage design is an inverse of the mine design 150. Thus, the same characteristics that were utilized in developing the mine design are also used to develop the waste storage design, e.g., bench height, berm width, slope angle, ramp width and the like.
For example, the haul road ramp width 158 may be determined by a default of approximately 3.5 times the width of the widest truck to allow passing between ascending and descending vehicles. In one embodiment, the maximum grade slope may be a 10% default. Although a number of defaults values are provided herein, the default values are representative of one embodiment and may be adjusted in different implementations. Moreover, although all of the mine design characteristics are not repeated in the waste design description, any or all of the design characteristics that are applicable to the mine design may be similarly utilized during the waste storage design.
With reference now to 456 of
Similarly, any modifications to the open pit mine design may be automatically carried over to the waste storage design. For example, if an increase in the size of the open pit mine design was contemplated, the user would be able to review the associated waste storage design. This information may be economically important if the adjustment to the open pit mine design resulted in a need for a secondary waste storage location or an adjustment to the waste storage design that would require additional permissions, or the like.
With reference now to
System 500 of
System 500 also includes computer usable non-volatile memory 510, e.g. read only memory (ROM), coupled to bus 504 for storing static information and instructions for processors 506A, 506B, and 506C. Also present in system 500 is a data storage unit 512 (e.g., a magnetic or optical disk and disk drive) coupled to bus 504 for storing information and instructions. System 500 also includes an optional alpha-numeric input device 514 including alphanumeric and function keys coupled to bus 504 for communicating information and command selections to processor 506A or processors 506A, 506B, and 506C. System 500 also includes an optional cursor control device 516 coupled to bus 504 for communicating user input information and command selections to processor 506A or processors 506A, 506B, and 506C. System 500 of the present embodiment also includes an optional display device 518 coupled to bus 504 for displaying information.
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System 500 is also well suited to having a cursor directed by other means such as, for example, voice commands. System 500 also includes an I/O device 520 for coupling system 500 with external entities. For example, in one embodiment, I/O device 520 is a modem for enabling wired or wireless communications between system 500 and an external network such as, but not limited to, the Internet. A more detailed discussion of the present technology is found below.
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System 500 also includes one or more signal generating and receiving device(s) 530 coupled with bus 504 for enabling system 500 to interface with other electronic devices and computer systems. Signal generating and receiving device(s) 530 of the present embodiment may include wired serial adaptors, modems, and network adaptors, wireless modems, and wireless network adaptors, and other such communication technology. The signal generating and receiving device(s) 530 may work in conjunction with one or more communication interface(s) 532 for coupling information to and/or from system 500. Communication interface 532 may include a serial port, parallel port, Universal Serial Bus (USB), Ethernet port, antenna, or other input/output interface. Communication interface 532 may physically, electrically, optically, or wirelessly (e.g. via radio frequency) couple system 500 with another device, such as a cellular telephone, radio, or computer system.
The computing system 500 is only one example of a suitable computing environment and is not intended to suggest any limitation as to the scope of use or functionality of the present technology. Neither should the computing environment 500 be interpreted as having any dependency or requirement relating to any one or combination of components illustrated in the example computing system 500.
The present technology may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform particular tasks or implement particular abstract data types. The present technology may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer-storage media including memory-storage devices.
This application claims priority to and benefit of co-pending U.S. Provisional Patent Application Ser. No. 61/616,868, Attorney Docket Number TRMB-3030.PRO, entitled “MINE OPTIMIZATION,” by George Derrick Darby, Jr., with a filing date of Mar. 28, 2012, and assigned to the assignee of the present application. This application is related to co-pending U.S. patent application Ser. No. xx/xxx,xxx, Attorney Docket Number TRMB-3030-1, entitled “AREA-BASED OPEN PIT MINE DESIGNER,” by Ferrier et al., with a filing date of TBD, and assigned to the assignee of the present application. This application is related to co-pending U.S. patent application Ser. No. xx/xxx,xxx, Attorney Docket Number TRMB-3030-2, entitled “AUTOMATIC CHANGE PROPAGATION IN AN AREA-BASED OPEN PIT MINE DESIGNER,” by Ferrier et al., with a filing date of TBD, and assigned to the assignee of the present application.
Number | Date | Country | |
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61616868 | Mar 2012 | US |