Packaged technology for in situ automatically monitoring underwater groundsill

Abstract

A complete set of technical methods for in-situ automatic monitoring of underwater foundations, including: multiple fixed inclinometer cross-section surface settlement monitoring methods; multi-point hydraulic pressure difference surface settlement monitoring methods; soil layered settlement monitoring methods; pore water pressure monitoring methods; Vertical displacement monitoring method; the automatic monitoring technology that the measurement and control system has been placed on the deep seabed for a long time. Features: Regardless of the distance from the shore, the in-situ monitoring of the underwater foundation can be carried out smoothly and conveniently. There is no need to set up a base point on the water, no need to set up a platform at sea, and no need to pass through buildings; Under the automatic monitoring and real-time transmission of monitoring data, especially during the period of strong winds, waves and giant typhoons, continuous and uninterrupted monitoring is still possible; automatic monitoring can save monitoring personnel, save the need to go to and from the ship, and save time; all automated monitoring instruments are underwater, It has little interference to the construction and reduces the damage rate of the instrument; automatic monitoring achieves punctual and on-point testing, eliminates human reading errors, and is accurate, fast, and high-precision.

Description

technical field [0001] The invention belongs to the underwater automatic testing technology of civil engineering foundations and foundations, and in particular relates to a complete technical method for in-situ automatic monitoring of underwater foundations. Background technique [0002] Generally speaking, the in-situ monitoring of civil engineering foundations and foundations needs to be monitored for more than one or two years. The monitoring contents mainly include: surface settlement, layered settlement of foundation soil, horizontal and vertical displacement, pore water pressure of foundation soil, Soil pressure on foundations and structures, etc. [0003] The routine monitoring method of land surface subsidence is to use a level instrument, the accuracy can reach 1mm, and the distance of a single measuring station should generally not exceed 30-50m. Especially for the monitoring of structures on the water far from the shore, it is impossible to set a reference point ...

AI Technical Summary

Problems solved by technology

However, the automation of underwater monitoring far from the shore will encounter greater difficulties

First, it is extremely difficult to set the reference point; second, where is the receiving instrument placed? Generally, they are placed in a room with a suitable temperature and humidity, which is impossible at this time; placed on a buoy on the water surface, not only is it very easy to be damaged by ships or construction machinery, but it will be easily taken away by passing civilian ships; On the underwater ground, on the one hand, strong measures for anti-collision, anti-smashing, and anti-hanging are required

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