Packaged technology for underwater in situ automatically monitoring

Abstract

An in-situ automatic monitoring complete technology method for an underwater groundwork comprises a section surface subsidence monitoring method by multiple fixed inclinometers; a multipoint hydraulic difference surface subsidence monitoring method; a layered soil mass subsidence monitoring method; a pore water pressure monitoring method; and a horizontal and vertical displacement monitoring method; an automatic monitoring technology with a monitoring and control system disposed in the deep water sea bottom for long period. The invention can successfully and conveniently perform the in-situ monitoring of the underwater groundwork without disposing waterborne bases, arranging maritime platforms and passing through buildings; can perform full-course monitoring on the engineering, perform underwater automatic monitoring and real-time monitoring data transmission, in particular monitor continuously in the typhoon period; the automatic monitoring can save monitoring workers and cruise time; the automatic monitoring instruments are all disposed underwater, thereby having little influence on construction and decreasing instrument damage rate; the automatic monitoring can perform on-time on-point test to eliminate man-made reading error, and make the reading accurate, quick and precise.

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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