Method of determining mining progress in open cast mining by means of satellite geodesy
First Claim
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1. A method of determining mining progress and the mined mass in a deposit to be mined in open cast mining, using a large-scale extraction apparatus which comprises a travelling support structure, a support portion mounted movably thereon, and at least one extraction device carried on the support portion, comprising the step, carried out when mining material in the deposit, of:
- receiving signals from at least four satellites by means of a first receiver disposed on said support portion of the extraction apparatus;
while said signals from at least four satellites are being received by said first receiver, receiving said signals by means of at least one further receiver disposed on the extraction apparatus at a position which is spaced from, but defined with respect to, the first receiver;
ascertaining the geodetic position of said first receiver from the signals received by said first receiver;
ascertaining the geodetic position of said further receiver from the signals received by said further receiver; and
determining, from the geodetic positions of said first and further receivers, the orientation in space of the support portion of the extraction apparatus;
whereby a model of the deposit can be established in which the parts of the deposit which have already been mined are identified.
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Abstract
In a method of determining mining progress and the mined masses in open cast mining the position and orientation of the extraction device such as a bucket wheel of a travelling excavator are ascertained by means of satellite geodesy using a receiver in the vicinity of the bucket wheel and a further receiver at another location on the excavator.
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Citations
9 Claims
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1. A method of determining mining progress and the mined mass in a deposit to be mined in open cast mining, using a large-scale extraction apparatus which comprises a travelling support structure, a support portion mounted movably thereon, and at least one extraction device carried on the support portion, comprising the step, carried out when mining material in the deposit, of:
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receiving signals from at least four satellites by means of a first receiver disposed on said support portion of the extraction apparatus; while said signals from at least four satellites are being received by said first receiver, receiving said signals by means of at least one further receiver disposed on the extraction apparatus at a position which is spaced from, but defined with respect to, the first receiver; ascertaining the geodetic position of said first receiver from the signals received by said first receiver; ascertaining the geodetic position of said further receiver from the signals received by said further receiver; and determining, from the geodetic positions of said first and further receivers, the orientation in space of the support portion of the extraction apparatus; whereby a model of the deposit can be established in which the parts of the deposit which have already been mined are identified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for determining mining progress in open cast mining using an installation comprising a large-scale extraction apparatus including a travelling support structure, a support portion mounted movably thereon, an extraction device carried on the support portion and operable to mine material from the deposit, a first receiver disposed on the support portion for receiving signals from at least four satellites, a second receiver for receiving signals from said at least four satellites and disposed on the extraction apparatus at a position spaced from said first receiver, and a third receiver adapted to operate as a reference receiver and disposed at a known stationary geodetic location at a spacing from said extraction apparatus, whereby, when mining material from the deposit, the coordinates of the first and second receivers relative to those of the third receiver can be determined from the signals received from said satellites by said first, second and third receivers and the positions of the first and second receivers, and therefrom the orientation in space of the support portion of the extraction apparatus, can be determined during mining for control of the mining operation.
Specification