APPARATUS FOR PRESTRESSING CONCRETE FLOOR OF INCLINED SHAFT WALL

• Main Authors: YANG, WEIHAO, YANG, RAN, MENG, CHENXIANG, WANG, YANSEN
• Format: Patent
• Language: English; French
• Published: 13.09.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SHAFTS; TUNNELS

An inclined shaft well wall concrete floor prestress loading apparatus (1), comprising two end bearing members (4), a corrugated pipe (5), a bearing rod member (6), and two anchor heads (7), the bearing rod member (6) being composed of a left bearing rod, a right bearing rod, and a loading mechanism, the left bearing rod and the right bearing rod being connected into one by means of the loading mechanism and penetrating into the corrugated pipe (5), the two end bearing members (4) being respectively sleeved on the left and right two ends of the bearing rod member (6), and the two anchor heads (7) respectively locking in place the left and right two end bearing members (4). The loading apparatus (1) is pre-embedded before the well wall and floor are cast. After the floor concrete (3) reaches a certain strength, the loading mechanism is used to apply lateral prestress to the floor concrete (3). Finally, grouting is used to seal the internal space of the loading apparatus (1), such that the loading apparatus (1) and the floor concrete (3) are fused into one. The loading apparatus (1) can greatly improve the anti-bending tensile properties of the floor concrete structure under high external water pressure and surrounding rock pressure.