Haase system [MINING ENGINEERING] Shaft sinking in loose ground or quicksand by piles in the form of iron tubes connected by webs; downward movement is facilitated by water forced down the tubes to wash ... [مشاهده متن کامل]
away loose material beneath their points. روش هاسه: روشی مهندسی برای گودبرداری شفت در زمین های سست یا ماسه روان
