Abstract: A poor foundation reinforcement system and a reinforcement method based on underground concealed arch structures are provided. The system and the method belong to the technical field of poor foundation treatment. The reinforcement system includes multiple columns of pile foundations arranged along a bridge direction. Multiple arch sheets are set in parallel between each two adjacent columns of pile foundations. Each arch sheet includes multiple high-pressure rotary jet piles arranged along the bridge. Each two adjacent arch sheets of the multiple arch sheets are connected by a micro-bending slab disposed on the two adjacent arch sheets, the multiple arch sheets are connected by the micro-bending slabs to together form an arch ring, and a construction joint is disposed between each two adjacent micro-bending slabs of the micro-bending slabs.

Abstract: A poor foundation reinforcement system and a reinforcement method based on underground concealed arch structures are provided. The system and the method belong to the technical field of poor foundation treatment. The reinforcement system includes multiple columns of pile foundations arranged along a bridge direction. Multiple arch sheets are set in parallel between each two adjacent columns of pile foundations. Each arch sheet includes multiple high-pressure rotary jet piles arranged along the bridge. Each two adjacent arch sheets of the multiple arch sheets are connected by a micro-bending slab disposed on the two adjacent arch sheets, the multiple arch sheets are connected by the micro-bending slabs to together form an arch ring, and a construction joint is disposed between each two adjacent micro-bending slabs of the micro-bending slabs.

Abstract: A ultra-violet liquid processing device comprises a liquid processor, a lamp holder, a latching mechanism provided within the lamp holder, and a lamp holder fixed cover provided with a lock hole therein. The latching mechanism comprises a locking dog able to extend from or retract into the lamp holder and a water nozzle blocker. When the lamp holder is pressed on the liquid processor and connected with the liquid processor by lamp holder fixed cover, the locking dog projects from the lamp holder and enter into the lock hole of the lamp holder fixed cover, so that the lamp holder fixed cover is locked and cannot move. By means of the lamp holder fixed cover being locked by the latching mechanism and not able to be moved, the ultra-violet liquid processing device is sealed reliably by means of the substantial structure.

Abstract: A ultra-violet liquid processing device comprises a liquid processor, a lamp holder, a latching mechanism provided within the lamp holder, and a lamp holder fixed cover provided with a lock hole therein. The latching mechanism comprises a locking dog able to extend from or retract into the lamp holder and a water nozzle blocker. When the lamp holder is pressed on the liquid processor and connected with the liquid processor by lamp holder fixed cover, the locking dog projects from the lamp holder and enter into the lock hole of the lamp holder fixed cover, so that the lamp holder fixed cover is locked and cannot move. By means of the lamp holder fixed cover being locked by the latching mechanism and not able to be moved, the ultra-violet liquid processing device is sealed reliably by means of the substantial structure.