Underwater multi-parameter automatic detection device for underground diaphragm wall

Abstract

The invention discloses an underwater multi-parameter automatic detection device for an underground diaphragm wall. The device comprises a shore-based control unit, an underwater control unit and an underwater execution device. The underwater control unit is electrically connected with the shore-based control unit and the underwater execution device respectively. The device is wide in single detection coverage and large in area, can realize full-coverage detection of underwater structures of a wharf, replaces an original laborious and troublesome manual random point selection inspection working mode, and is high in work efficiency, low in cost and small in work danger; meanwhile, the underwater execution device is large in overall structure, and the underwater execution device is set to bein a frame structure, thereby making the entire device have higher underwater surge resistance capacity; and besides, through arrangement of multiple groups of anti-collision components, collision between the underwater execution device and the wharf wall can be prevented, thereby improving practicality.

Description

technical field [0001] The invention relates to the technical field of detection equipment for an underwater facing structural surface, in particular to a device for automatic detection of underwater multi-parameters of an underground diaphragm wall. Background technique [0002] The foundation project of the reinforced concrete ground wall structure is to excavate a narrow and long deep groove along the peripheral line of the deep excavation project on the ground under the condition of mud retaining wall. After cleaning the groove, hang it in the groove Put the reinforcement cage, and then use the conduit method to pour underwater concrete to form a unit trough section. In this way, a continuous reinforced concrete wall is built underground, which is used as the water interception, seepage prevention, load bearing and water retaining structure of the wharf. Due to the particularity of its construction method, there are usually two common quality problems of exposed ribs and...

AI Technical Summary

Problems solved by technology

In order to check and accept, divers are required to manually clean the mud skin underwater. However, due to the high cost of manual cleaning, the risk of special operations for divers is high, and the construction cost is high. Usually, the detection can only be carried out by random inspection.

[0004] The detection of the underwater part of the existing wharf in service is mainly through the underwater visual detection of divers, and is assisted by underwater photography and video recording. The detection of divers is usually carried out in a "zigzag" shape, so that the detection speed is fast, but Due to the following two reasons, divers are still unable to achieve full coverage detection, and still focus on random detection or random detection of defects: On the one hand, with the use of the dock, marine organisms adhere to the underwater structure, and some hidden dangers are covered, so hidden dangers cannot be found in the first place On the other hand, no matter whether the divers are inspecting vertically or horizontally, they are affected by the underwater light, which limits the inspection field of vision and cannot conduct a full-coverage investigation on the facing surface of the wharf. There may be hidden dangers in the wharf structure. The discovery of defects and hidden dangers will be random

If divers carry out 100% full coverage inspection, the labor intensity is high, the operation risk is relatively high, and it will delay the normal production operation of the terminal

[0005] There is also grid 8 detection (see Figure 5 ) method, first hang the grid above the water-facing wall of the underwater component, and require divers to check according to the grid, which is improved compared with the original method, but the grid method is only for local measurement and Detection is very advantageous. It can accurately locate the location to be detected and accurately measure the size of hidden dangers. However, the workload required for full coverage detection of underwater components is very large, and the operation is relatively troublesome. The sea side is protruding, so it is relatively difficult to hang the grid to fit the shore wall facing the water, so that an accurate reference cannot be formed, and the operation efficiency is low, and the actual operation is difficult

[0006] In addition, there is still a way to use underwater robots for detection, but in order to ensure clear and accurate shooting pictures, the underwater robot needs to lean into the water-facing wall of the dock as much as possible, and the operation of the underwater robot is related to the operation of the ground personnel. Control, because the underwater hydrological conditions often change and the strength of the surge cannot be grasped, and the overall size of the existing underwater robot is small and its own anti-surge ability is weak, so it is easy for the underwater robot to crash on the facing wall of the dock place

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