Device and its method for monitoring river bed sedimentation in tunnel-pass-through river construction

Abstract

A method and apparatus used for monitoring river bed sedimentation in tunnel across potamo engineering are disclosed. The invention includes hydrostatic sensing collection unit composed of at least two hydrostatic sensing devices fixed at the bottom of potamo and signal receiving processing and analyzing equipment set on the bank which consists of signal receiving instrument for receiving variation signal created by each hydrostatic sensing device and electric processing device containing data processing and analyzing sys tem, the hydrostatic sensing devices are linked separately to signal receiving instrument by data wires, the signal receiving instrument is linked to electric processing device by data wire, by real time processing signal is created by hydrostatic sensing devices by electric processing device to acquire monitoring data for monitoring river bed sedimentation.

Description

technical field [0001] The invention relates to a device and method for monitoring river bed settlement in tunnel crossing river construction. Background technique [0002] When digging a tunnel across the river, it is necessary to monitor the changes in the water pressure and settlement of the river bottom above the tunnel axis in real time, and analyze the real-time monitoring results. To help engineering personnel keep abreast of changes in the river bottom, and assist engineering decision makers to make correct decisions, thereby ensuring the smooth progress of tunnel excavation. Yet the various monitoring devices (as buoy method, sonar method etc.) that can be applicable to this occasion monitoring at present, it generally exists such problem: one, easily be affected by external factor change (as: the passing ship of river surface, tidal current etc.) Influenced by rising tide or low tide;), the monitoring results have large errors and inaccuracies, and cannot truthful...

AI Technical Summary

Problems solved by technology

Yet the various monitoring devices (as buoy method, sonar method etc.) that can be applicable to this occasion monitoring at present, it generally exists such problem: one, easily be affected by external factor change (as: the passing ship of river surface, tidal current etc.) Influenced by rising tide or low tide;), the monitoring results have large errors and inaccuracies, and cannot truthfully reflect the actual changes in the river bottom; Second, the real-time monitoring cannot obtain monitoring signals and convert them into visual descriptions of various measuring points at the bottom of the river in real time 3. The monitoring accuracy is not high (the general monitoring accuracy can only reach 10-30cm); 4. It has a great impact on the river surface

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