Sinking tubular steel derrick and mounting method of same

摘要: The invention relates to a sinking tubular steel derrick and mounting method thereof. is of flat top rectangular pyramid with holohedral main body truss comprises support rod piece, pieces corresponding three layers platforms, namely sheave wheel platform, an intermediate platform gangue turning which are connected the piece from bottom, like. Beams arranged in shape Chinese character Ri; inverted V central nodes on four sides at corners platform; axial lines superposition extension used for connecting intersection points between foundation. suitable vertical shafts net diameter 6.5m-9m, average depth not more than 1400m working load 530t second-stage engineering construction thereof, can simplify processing, transportation, detachment, realize stronger applicability terrain provide reliable guarantee realizing rapid shortening period.