قارن الطرق

	نموذج حد القطع لـ لين	خوارزمية ليرش-غروسمان	تحسين تخطيط الفراغات المنجمية
المجال	هندسة التعدين	هندسة التعدين	هندسة التعدين
العائلة	Process / pipeline	Process / pipeline	Process / pipeline
سنة النشأة	1988	1965	1960
صاحب الطريقة	K. F. Lane	Helmut Lerchs and Israel Grossmann	Mining Engineering Practice
النوع	Economic optimization framework for ore classification	Graph-theoretic algorithm for pit limit optimization	Optimization framework for underground mine excavation design
المصدر التأسيسي	Lane, K. F. (1988). The economic definition of ore: cutoff grades in theory and practice. Mining Journal Books, London.	Lerchs, H., & Grossmann, I. F. (1965). Optimum design of open-pit mines. Canadian Mining and Metallurgical Bulletin, 58(633), 47-54.	Brady, B. H. G., & Brown, E. T. (2004). Rock mechanics for underground mining. Springer Science+Business Media.
الأسماء البديلة	Lane Model, Cut-off Grade Optimization, Lane's Optimization Model	Lerchs-Grossmann Method, LG Algorithm	Stope Design, Underground Mine Layout, Panel Design
ذات صلة	3	4	3
الملخص	Lane's Cut-off Grade Model, developed by Kenneth F. Lane and formalized in his 1988 book, provides a rigorous economic framework for determining the minimum grade at which ore should be mined and processed. It accounts for variable mining costs, metallurgical recovery, and commodity prices to optimize profit per unit processed. The model is foundational in mining economics and underpins daily operational decisions at thousands of mines worldwide.	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.	Stope layout optimization is the process of designing the size, shape, and spatial arrangement of underground mine excavations (stopes) to maximize ore recovery while maintaining safety and economic viability. It balances the desire for large extraction volumes against rock mechanics constraints and support costs. The layout determines mining productivity, capital investment in support systems, and long-term mine life.