Long-distance distributed method and system for monitoring water level depth of tunnel water drainage channel

Abstract

The invention provides a long-distance distributed method for monitoring water level depth of a tunnel water drainage channel. According to the method, a carbon fiber internal heating optical cable is arranged; the carbon fiber internal heating optical cable is fixed on a side wall of the water drainage channel through a clamp to form a loop and the loop is communicated with a distributed optical fiber temperature demodulator; the distributed optical fiber temperature demodulator is communicated with a computer; a temperature difference value formed by different temperature gradients or different medium interfaces is measured by utilizing different degrees of energy transmitting in different media of water and air and different temperature gradients formed on the different medium interfaces after heating the carbon fiber of the carbon fiber internal heating optical cable, so that data is demodulated by the distributed optical fiber temperature demodulator and a computer to judge the height of a water level. The long-distance distributed method provided by the invention has the advantages of distributed monitoring, simple structure, convenience for construction, low cost and the like.

Description

technical field [0001] The invention belongs to the fields of tunnel engineering, geotechnical engineering and surveying engineering, and in particular relates to a method capable of realizing long-distance distributed monitoring of tunnel drainage depth. Background technique [0002] Tunnel engineering is widely used in the construction of urban subway traffic, high-speed rail, and highways across mountains and waters because of its relatively low cost and the advantages of saving ground space. As a relatively concealed project, the drainage channel construction of the tunnel is a very important link in the whole project. When the water level in the tunnel is too high due to poor drainage or not timely, it will often cause traffic accidents and endanger personal and property safety. Therefore, monitoring the water level and depth of the drainage channel in the tunnel, as an auxiliary decision-making work, has great engineering significance. [0003] In actual engineering, ...

AI Technical Summary

Problems solved by technology

[0003] In actual engineering, the monitoring of the drainage depth in the drainage channel in the tunnel mainly relies on manual inspection. The disadvantage of this method is that the degree of intelligence is not high, time-consuming and labor-intensive; feedback information cannot be obtained in time, and it is easy to cause missed inspections

Images