Tunnel active source seismic wave wireless acquisition method, terminal, system, method and medium

Abstract

The invention discloses a tunnel active source seismic wave wireless acquisition method, system and terminal and relates to the technical field of tunnel engineering. The implementation process is as follows, an upper computer is in communication connection with a wireless access master station, and the wireless access master station is in wireless connection with a plurality of wireless acquisition terminals; starting up is carried out, and sampling parameters are set through the upper computer; sampling is started, the master station carries out AD sampling and issues a sampling starting instruction to the terminal, and the terminal starts AD sampling; the main station reads an AD sampling result, and when the result exceeds a set threshold value, the main station transmits a trigger completion instruction to the terminal and the upper computer at the same time; the upper computer starts timing after receiving a trigger completion instruction, and the terminal completes sampling after sampling time is set; and the upper computer issues a data uploading instruction to the accessed terminal, the terminal uploads the stored AD sampling data to the upper computer, and the upper computer stores and analyzes the received data and displays the waveform of each wireless acquisition terminal and each channel. The sampling data of the method has characteristics of high precision and traceability.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a method, system and terminal for wireless acquisition of active source seismic waves in tunnels. Background technique [0002] In the process of tunnel construction, in order to ensure construction safety, it is necessary to find out in advance whether there are unfavorable geological bodies such as faults, aquifers, broken zones, etc. in front of the tunnel face, otherwise it will lead to potential safety hazards. At present, the use of seismic wave advance detection method for tunnel geological advance prediction is one of the most common and effective methods to detect unfavorable geological bodies, usually using active sources (also known as artificial sources, such as sledgehammers, hydraulic sources, pneumatic sources, etc.) Seismic waves are excited on the side wall of the tunnel, and the seismic wave signals are recorded by the geophone and signal acquisition ...

AI Technical Summary

Problems solved by technology

However, there are usually problems in the seismic wave wireless acquisition system in the prior art: ①The sampling accuracy and sampling rate are low, and the seismic waveform cannot be accurately restored; The seismic wave data; ③ The issue of trigger delay and synchronization between multiple wireless acquisition terminals is not considered

Images