Great seismogenic process and imminent earthquake monitoring system based on earth sound detection

Abstract

The present invention discloses a great seismogenic process and imminent earthquake monitoring system based on earth sound detection. According to the system, a sensor array is mounted in deep holes or deep wells, and receives earth sound signals including complete frequency information, intensity information and sound source location information; the earth sound signals pass through a signal processing module and a signal transmission passage module, and are stored and sent to a monitoring center by a master control and data storage and sending module; and the system is ensured to work normally for more than one month by a power supply managing module even under the conditions of wilderness or disasters. The system provided by the invention can perform unmanned, intensive and large-scale monitoring on the earth sound information in a great seismogenic process and before an imminent earthquake for a long term with low cost and reliability.

Description

technical field [0001] The patent of the present invention relates to the field of large earthquake monitoring equipment and circuit system design, and specifically relates to a large earthquake breeding process and imminent earthquake monitoring system based on the geoacoustic detection method. Background technique [0002] After continuous movement and changes, the earth has gradually accumulated huge energy, causing sudden rupture of rocks in some fragile areas of the earth's crust, or triggering the dislocation of original faults. This is an earthquake. my country is one of the countries with the most severe earthquake disasters in the world's continents. On the land that accounts for about 1 / 14 of the world's land area, the number of earthquakes every year accounts for more than 1 / 3 of the world's land earthquakes. Strengthening the research on countermeasures of earthquake disasters, improving the technical level of earthquake monitoring and prediction, and mitigating ...

AI Technical Summary

Problems solved by technology

These technical solutions have some common problems: First, the geoacoustic information not only includes the high-frequency ultrasonic waves generated by the subterranean bedrock section and its surrounding small breaks and micro-fractures during the earthquake preparation process or before the earthquake, but also includes the Low-frequency audible waves and infrasound waves produced during rock macro-fracture and crustal creep (Tian Shixiu, "Ground Acoustics and Earthquake Prediction", Physics [J], 1978)

However, the current technical solutions all use acoustic sensors with a single spectral response, which only detect high-frequency ultrasonic waves underground, or only detect low-frequency audible waves or infrasonic waves on the surface, and fail to comprehensively detect all frequency information of geoacoustic information; second, the current The widely used acoustic emission sensor can not only detect scalar information such as frequency and intensity in geoacoustic information, but also detect vector information such as the direction of geoacoustic sound source.

However, the installation of the acoustic sensor in the current technical solutions does not consider optimizing the installation point of the sensor to clearly distinguish the direction of the sound source of the ground sound; third, in the current technical solution, there is no detailed mention of ensuring device stability Auxiliary device or component module for reliable and long-term monitoring of geoacoustic information

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