Large geotextile sandbag used for near-shore deep-groove bank slope protection and throwing device thereof

Abstract

The invention relates to a large geotextile sandbag used for near-shore deep-groove bank slope protection and a throwing device of the sandbag. The single body of the large geotextile sandbag is 10m long, and the diameter of the single body is 1.2m; the sandbag is in the type of a cylinder without side seams, the two sides of the sandbag are sewn with an overseam double-thread method, and the bag cloth is made of high-strength polypropylene; three holes with the diameter of 10cm are formed in the same side of the bag body. The large geotextile sandbag is durable in use, easy to throw and position and remarkable in protection effect. The throwing device used for the large geotextile sandbag comprises a support, a turning plate arc-shaped groove, a crowbar and other components and is mainly technically characterized in that a sandbag throwing turning plate is an eccentric arc-shaped groove, the surface of the turning plate is polished to be smooth, and drainage holes are formed in the bottom of the groove. The throwing device can avoiding depending on an external power source, the work face is reduced, energy and project investment are saved, construction efficiency is improved, and moreover the throwing device is convenient to use and high in comprehensive efficiency and provides a technological guarantee for completing large-scale throwing and bank protection operation in a short time.

Description

technical field [0001] The invention relates to a large-scale geotextile sand-filled bag and a throwing device thereof, in particular to a large-scale geotextile sand-filled bag and a throwing device thereof for protecting the bank slope of a deep groove near the shore. Background of the invention [0002] Due to the complexity of river regime evolution and the diversity of bank slope geological structures, many deep troughs are formed in the lower reaches of the Yangtze River. These deep troughs are deep and fast (the water depth can reach 50m, and the flow velocity can reach 2m / s). , the water flow is topped, the near-shore slope is steep, and steep slopes with a slope greater than 1:2 appear in many sections, and some slopes below -5m even reach 1:1.6, exceeding the critical value of 1:2.5 for stable bank slopes in the lower reaches of the Yangtze River . After the operation of the Three Gorges Project, the discharge of clear water may intensify the evolution of the bea...

AI Technical Summary

Problems solved by technology

[0006]3. Traditional sandbags are filled with sand from one end and water from the other. During the filling process, the pressure in one direction is too large, the sandbags are easy to break, and the filling time is long, which is easy to Problems such as blockage of the slurry delivery pipe and poor drainage will affect the construction efficiency; uneven filling will lead to irregular bag shape, distortion and rupture under the action of water flow; at the same time, due to insufficient filling degree, the roundness of the bag shape will decrease, resulting in water The uncertainty of the drift distance caused by the random change of the water flow resistance of the bag when the bag is thrown down increases the difficulty of positioning the large sandbag.

[0007]4. The existing sandbag throwing device is generally a power flipping structure. On the construction ship, power equipment such as winch is used for throwing and flipping, or by a crane, etc. Lifting equipment throwing operations and other methods have large working surfaces, low work efficiency, high energy consumption, inconvenient use, and low overall efficiency

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