An advanced earthquake prediction device, system and method suitable for drilling and blasting tunnels

Abstract

The invention discloses an advanced earthquake forecast device, system and method suitable for a tunnel of a borehole-blasting method, and solves the problems of low automatic degree, long detection time and low detection quality of advanced geologic detection in the prior art. Via the device, system and method, automatic advanced forecast can be provided for a geologic anomalous body in front ofa tunnel face and, reference is provided for optimizing construction schemes and ensuring the construction safety. The device comprises a shock excitation module, a rigidity improving module, a positioning module and a control module, the rigidity improving module is provided with a pressure sensor, the pressure sensor senses a pressure value in real time and back feeds the pressure value to the control module, the control module realizes controllable support, the positioning module comprises an infrared positioning device for locating the shock excitation direction and an image positioning device for shooting rock condition in the surrounding of shocking exciting points; and the image positioning device transmits a collected image signal to the control module, and the control module identifies the spatial position relation between the shocking excitation module and the rock surface automatically so as to control the angle of the shock excitation module.

Description

technical field [0001] The invention relates to the field of advanced geological prediction of tunnels, in particular to an advanced earthquake prediction device, system and method suitable for drilling and blasting tunnels. Background technique [0002] With the continuous improvement of my country's national economic level and the continuous increase of infrastructure construction, my country's tunnel construction has achieved unprecedented development. my country has become the world's largest tunnel and underground engineering construction, the largest number, the most complex geological conditions and structural forms. , Build the country with the fastest technological development. Among them, the drilling and blasting method plays a very important role in tunnel construction due to its advantages of economy and geological adaptability. During the construction of drill-and-blast tunnels, various unfavorable geological conditions such as karst and fault fracture zones ar...

AI Technical Summary

Problems solved by technology

However, in the advanced seismic detection of tunnels constructed by drilling and blasting method, manual detection is still the main method at present, and the degree of detection automation is low, which is time-consuming and laborious. However, the seismic wave method requires the project to be shut down during the detection process, and the long detection time will affect the construction period.

In addition, for the advanced detection of earthquakes, a reliable and stable source is the basis for detection, but currently the commonly used shock methods are still three main methods: explosive source shock, giant magnetostrictive source shock and artificial hammer shock: the danger of explosive source High, improper operation can easily cause casualties and equipment damage, and the safety risk is relatively large; the price of the giant magnetostrictive source is very high due to the expensive preparation materials, and it is easy to be damaged during construction, so it is relatively difficult in actual engineering. Rarely used; manual heavy hammer hitting the tunnel side wall shock method, due to different operating levels, resulting in poor shock repeatability, often resulting in unstable seismic wave reflection signals, affecting detection quality

[0005] In short, there is a lack of an automatic seismic excitation and detection device, system and method for earthquake advance prediction in tunnels constructed by drilling and blasting methods in advance detection of earthquakes.

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