Earthquake monitoring and early-warning system and method

Abstract

The invention provides an earthquake monitoring and early-warning system and method. The earthquake monitoring and early-warning system is arranged in a monitored deformation area and a stable area. An active fault surface is arranged between the deformation area and the stable area. The system comprises a plurality of constant-resistance large-deformation anchor cables and force monitoring devices. The constant-resistance large-deformation anchor cables are installed in the deformation area and the stable area and penetrate through the active fault surface. The force monitoring devices are arranged on the constant-resistance large-deformation anchor cables so as to monitor the forces acted on the constant-resistance large-deformation anchor cables by the active fault surface. According to the invention, the constant-resistance large-deformation anchor cables penetrate through the active fault surface, the earthquake force acted on the active fault surface is reflected by the constant-resistance large-deformation anchor cables, the magnitude and the change of the acting force are measured by the force monitoring devices, and the scientificity and the reliability of earthquake disaster monitoring and early-warning are substantially improved.

Description

technical field [0001] The invention relates to an earthquake monitoring and early warning system and method, in particular to a geological structure active fracture stability monitoring and early warning system and earthquake disaster advanced monitoring and early warning system and early warning method. Background technique [0002] Earthquake (active fault) is a natural phenomenon that can bring huge disasters to human society. Its most prominent feature is its unexpected and shockingly huge destructive power. In recent years, my country's earthquake disasters have the characteristics of high frequency, high intensity, wide distribution, shallow focus and severe disasters. The "National Disaster Prevention and Mitigation Plan (2006-2020)" proposes that "by 2020, my country will basically have the ability to comprehensively resist earthquakes of about magnitude 6, which is equivalent to the basic intensity of earthquakes in various regions, and the ability of earthquake pr...

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Problems solved by technology

[0009] Although the second-generation earthquake monitoring and early warning technology realizes the observation of pre-earthquake anomaly information, which can be used to judge and identify the probability of earthquake occurrence, and carry out long-term earthquake prediction, these precursory anomaly information are not a necessary and sufficient condition for earthquake occurrence, that is, before an earthquake occurs There may be some abnormal precursor information, but when there is abnormal precursor information, it is not necessarily related to the earthquake

[0010] The above earthquake monitoring and early warning technologies can be summarized into geometric observation method, physical observation method and ground stress observation method, which basically cover the monitoring of sign information on the surface before the earthquake. The measurement results can be used as a reference basis for long-term earthquake prediction and meet the sufficient conditions for earthquake occurrence. However, because it does not meet the necessary conditions for earthquake occurrence, it is difficult to be used for short-term and impending earthquake prediction, which is the root cause of the inability to realize earthquake advance monitoring and early warning for nearly a century

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