विधियों की तुलना करें
चुनी हुई विधियों की आमने-सामने समीक्षा करें; भिन्नता वाली पंक्तियाँ रेखांकित हैं।
| Lerchs-Grossmann Algorithm× | स्यूडोफ्लो एल्गोरिथम× | |
|---|---|---|
| क्षेत्र | खनन इंजीनियरिंग | खनन इंजीनियरिंग |
| परिवार | Process / pipeline | Process / pipeline |
| उद्भव वर्ष≠ | 1965 | 1992 |
| प्रवर्तक≠ | Helmut Lerchs and Israel Grossmann | Dorit S. Hochbaum |
| प्रकार≠ | Graph-theoretic algorithm for pit limit optimization | Efficient algorithm for maximum closure problem |
| मौलिक स्रोत≠ | Lerchs, H., & Grossmann, I. F. (1965). Optimum design of open-pit mines. Canadian Mining and Metallurgical Bulletin, 58(633), 47-54. link ↗ | Hochbaum, D. S. (1992). A new-old algorithm for minimum-cut and maximum-flow problems. Journal of the ACM, 1(1), 76-109. link ↗ |
| उपनाम | Lerchs-Grossmann Method, LG Algorithm | Pseudoflow Algorithm, Hochbaum Algorithm |
| संबंधित≠ | 4 | 3 |
| सारांश≠ | The Lerchs-Grossmann Algorithm is a graph-theoretic method for determining the ultimate pit limit in open-pit mining operations. Introduced by Helmut Lerchs and Israel Grossmann in 1965, it maximizes the net present value of extracted ore while respecting slope stability constraints. This algorithm forms the theoretical foundation for most modern pit optimization software. | The Pseudoflow Algorithm, developed by Dorit Hochbaum in 1992, is a polynomial-time algorithm for computing maximum weighted closures in directed acyclic graphs. In mining, it solves the ultimate pit limit problem more efficiently than earlier methods. By maintaining feasible pseudoflows and iteratively eliminating negative-cost nodes, it achieves near-optimal practical performance even on industrial-scale block models. |
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