Statistical Evaluation of Model Rock Compressive Strength at Branisko Exploratory Tunnel Excavation
نویسنده
چکیده
Štatistické spracovanie modelovej pevnosti pri razení prieskumnej štôlne Branisko. Počas razenia východnej časti prieskumnej štôlne Branisko bol na plnoprofilový raziaci stroj Wirth TBII-330-H/M inštalovaný monitorovací a optimalizačný systém WORS, vyvinutý na Ústave geotechniky SAV. Systém umožňoval výpočty v reálnom čase veličín ako špecifická energia rozpojovania a odporučený prítlak raziacej hlavy. Údaje získané monitorovaním boli následne použité ako vstupy do matematického modelu systému IKONA, ktorý umožňoval previesť parametre procesu razenia na parametre horninového masívu. Jednou z takto určovaných veličín bola i modelová tlaková pevnosť horniny, ktorej štatistické hodnotenie je uvedené v článku. Bola skúmaná vhodnosť rôznych rozdelení pravdepodobnosti pre popis modelovej pevnosti v jednotlivých geologických úsekoch prieskumného tunela Branisko. Z analýzy je zrejmé, že pevný celistvý horninový masív najlepšie charakterizuje normálne rozdelenie, zatiaľ čo masív porušený zlomami a diskontinuitami je vhodnejšie popisovať lognormálnym alebo Weibullovým rozdelením.
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