A kind of underwater fixation method of weir surrounded by sand

Abstract

The present application relates to an underwater fixing method for a weir surrounded by sand, which specifically includes the following steps: inserting two rows of positioning steel pipes in each row into the river bed, placing sandbags to be filled between the two rows of positioning steel pipes, and The steel ring made on the side of the sandbag is socketed with the positioning steel pipe. The sandbag positioning equipment is moved to the riverbed below the sandbag by the transport ship, and the gravel bag is placed on the sandbag to make the sandbag sink. It is tied and fixed with the filling cuff of the sandbag, and the sediment at the bottom of the riverbed is fed into the sandbag, which has the effect of not easily shifting the sandbag.

Description

technical field [0001] The present application relates to the technical field of sand-enclosed weirs, in particular to an underwater fixing method for sand-enclosed weirs. Background technique [0002] When the underwater structure needs to be overhauled, it is necessary to build a temporary cofferdam at the overhaul point, and then drain the water in the temporary cofferdam so that workers can work. The sand-enclosed weir has good reusability and is easy to install and dismantle. The construction speed is fast, which is suitable for the characteristics of the temporary cofferdam. [0003] Existing large-scale sand-surrounding weirs are generally carried out with sandbags more than ten meters long, and then the sand is blown into the sandbags by a sand blower, and then several sandbags are stacked in the vertical direction. The surface area of ​​the bottom sandbag is Maximum, after the stacking is completed, block stones are piled on the surface of the sandbag for protectio...

AI Technical Summary

Problems solved by technology

[0004] Regarding the above-mentioned related technologies, the applicant believes that before the first few sandbags sink into the bottom of the water, several positioning steel pipes will be evenly inserted along the length direction of the sandbags on both sides of the predetermined position in the width direction, and then the sandbags will be passed through the rock bags. The sandbags sink to the bottom of the water, and then the sandbags are blown and filled. There is a defect that the sandbags are affected by the wind, waves and currents, which makes the positioning steel pipe easy to tilt, causing the sandbags to easily shift from the predetermined position.

Images