Throwing-filling structure system and working method thereof

Abstract

The invention discloses a throwing-filling structure system and a working method thereof. The throwing-filling structure system mainly comprises a throwing-filling ship, GPSs, anchor machines, a buoyancy tank, sandbag control guide frames, control frame fixing devices, a broadside control frame storage device, a control frame lifting system and an operation control box; the buoyancy tank is located on one side of the throwing-filling ship, a moon pool is formed in the middle of the buoyancy tank, and the three sandbag control guide frames are stored in the moon pool; the sandbag control guideframes are formed by assembling a plurality of independent sandbag control frames together; the control frame lifting system is constituted by four lifting vertical columns, and used for controlling moving of the sandbag control guide frames; and the broadside control frame storage device is composed of four storage frames, and used for storing the sandbag control guide frames. In general, according to the throwing-filling structure system, the accuracy of sandbag throwing-filling can be effectively improved, the construction quality is improved, and the construction progress is accelerated.

Description

technical field [0001] The invention relates to the technical field of river regulation, in particular to a dump filling structure system and a working method. Background technique [0002] For the Padma Bridge River Improvement Project in Bangladesh, the water depth in the construction area is 15m to 30m, the water flow velocity during the construction period is 0.5 to 1.5m / s, the designed bank slope is 1:6, and the allowable deviation of slope excavation is ±250mm. The slope is dredged by dredgers; the soil quality is mainly silt and fine sand. The bank slope protection structure is mainly protected by 3 layers of 125kg geotextile filter layer + 90cm thick stone block, and the foundation trench protection structure is protected by 5 layers of 800kg geotextile bag. The geotechnical bags adopt the form of continuous loose throwing, including 17 million 125kg geotechnical bags and 4 million 800kg geotechnical bags. The minimum thickness of geotechnical bag throwing filling ...

AI Technical Summary

Problems solved by technology

[0003] Since the construction of the Padma River Improvement Project in Bangladesh, the flat barge has been used as the construction platform, and the four windlasses are used as the positioning basis, and the positioning is based on GPS. Filling method, due to factors such as water flow and deep water level in the construction area and different postures of the geotechnical bag entering the water, the underwater drift and dispersion are very large, resulting in a large tolerance for the flatness of the geotechnical bag after throwing and filling. The slope formed after filling is relatively large, and the labor intensity is high, the safety is poor, and the construction efficiency is low. As a result, the throwing filling process and the throwing filling results have not been approved by the owner and the supervisor. The brief description is as follows:

[0004] The precision of geobag filling is low, and the thickness of the area after filling is too high or too low.

The flat barge is used as the construction platform for geotechnical bag throwing and filling. On one side of the barge, dozens of pieces are thrown and filled into the water according to the measured fixed point position and the number of throwing layers, and then the four-anchor positioning winch is used for stepping and the next round of throwing. However, due to the influence of the water flow in the construction area and the turbulent flow of the bag impacting the water surface when the geotechnical bag enters the water, and the relatively deep water level in the construction area, it will cause the geotechnical bag to drift after entering the water, making it difficult to fall to the predetermined riverbed dump filling site, and Drift has a large randomness, and the final drop point after the geotechnical bag enters the water cannot be controlled, and eventually the thickness of the geotechnical bag layer in the dumped filling area does not meet the specification requirements (too high or too low)

Supervision requirements: If the precision of throwing and filling fails to meet the requirements of the technical specifications, the construction of the next process or working face will not be approved; the throwing and filling exceeding a certain thickness will be removed, and the throwing and filling that does not meet the thickness must be re-thrown; The work is difficult, and when re-throwing is performed, the re-thrown geotextile will also be affected by the above, making it difficult for the geotechnical bag to fall to the low point, and the effect of re-throwing cannot be achieved

Duplication of work and inefficiency

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