השוואת שיטות

	סיווג מסלע	ניתוח סונדה גיאופיזית (Well Log Analysis)
תחום	מדעי כדור הארץ	מדעי כדור הארץ
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1974	1940s
הוגה השיטה	Bieniawski and Barton	Guyod and Barnhart
סוג	engineering geology assessment pipeline	subsurface characterization pipeline
מקור מכונן	Bieniawski, Z. T. (1989). Engineering Rock Mass Classifications. John Wiley & Sons.	Asquith, G. B., & Gibson, C. R. (2004). Basic Well Log Analysis (2nd ed.). American Association of Petroleum Geologists.
כינויים	RMR system, Q-system classification, rock quality designation	wireline logging, borehole logging, petrophysical analysis
קשורות	4	5
תקציר	Rock mass classification is the systematic assessment of rock quality and mechanical behavior in engineering geology, combining field observations of jointing, weathering, and strength into a numerical index. Pioneered by Bieniawski (RMR system, 1974) and Barton (Q-system, 1974), these methods enable rapid site assessment and guide design of excavations, dams, and slopes. Classification bridges the gap between small laboratory samples and large field-scale behavior.	Well log analysis is the systematic examination of measurements recorded by instruments lowered into a borehole to characterize subsurface lithology, fluid content, and petrophysical properties. Originating in the 1940s, this method has become indispensable for petroleum exploration, groundwater assessment, and engineering geology. Well logs provide direct depth-correlated data that anchor interpretation of seismic surveys and constrain reservoir models.