Underwater soil body settlement monitoring system and monitoring method

Abstract

The embodiments of the invention disclose an underwater soil body settlement monitoring system and monitoring method. The system comprises a measuring instrument, a target, a rearview target, an uppercomputer and a supporting structure; the measuring instrument is in communication connection with the upper computer and is used for emitting first optical signals to the target, receiving first reflected optical signal reflected by the target, emitting second optical signals to the rearview target, receiving second reflected optical signals reflected by the rearview target, sending current datainformation to the upper computer according to the received first reflected optical signals and second reflected optical signals; the target is fixedly arranged at the top end of the supporting structure; and the supporting structure is fixed at the bottom of to-be-monitored water. According to the underwater soil body settlement monitoring system and monitoring method provided by the embodimentsof the invention, the supporting structure is used for reflecting underwater settlement to a water surface; an automatic monitoring system is used for monitoring; and therefore, the problems of low precision and low real-time performance in a construction process are solved, the real-time feedback of underwater soil settlement is realized, construction parameters can be conveniently adjusted in time, and the precision level of monitoring data can be improved.

Description

technical field [0001] The embodiments of the present invention relate to tunnel engineering construction technology, in particular to a monitoring system and method for underwater soil settlement. Background technique [0002] When the tunnel crosses the river and crosses the bottom of the water, due to the disturbance of the soil caused by the construction, the bottom of the water will subside, which will increase the difficulty of operation for the construction personnel. [0003] Generally, land subsidence is directly monitored with a precision level, but the complexity of the underwater soil makes this method difficult to implement. The commonly used underwater monitoring method is the underwater scanning technology, which uses ultrasonic scanning to scan the changing trend of the underwater. When monitoring, the ultrasonic transducer is placed at a certain position underwater. The measurement and control device controls the ultrasonic transducer to send out sound wave ...

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Problems solved by technology

[0004] The existing technology has the following defects: First, there are large errors during underwater construction, with an accuracy of 100mm, which cannot provide accurate monitoring data for construction personnel, and it is difficult to meet the control requirements of tunnel construction for settlement; second , the analysis of underwater scanning data is slow, and the settlement data can only be obtained after 1 to 2 hours, which cannot be fed back to the construction work surface in time. It is difficult for construction personnel to correct deviations in time, and the real-time performance is poor.

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