Earthquake forecasting method and three-dimensional ground stress and ground inclination comprehensive detection body

Abstract

The invention relates to an earthquake forecasting method and a three-dimensional ground stress and ground inclination comprehensive detection body, and the forecasting method comprises the steps that in a drilling deep well, detection points are respectively selected at the position, 50-200 meters away from the wellhead of the drilling deep well, of the upper section part and at the bottom position of the drilling deep well to detect ground stress, and ground stress vector diagrams of the positions of the detection points are prepared;wherein the distance between the two detection points is 300 to 1000 meters; the two corresponding rays on the two ground stress vector diagrams are in a divergent shape and extend in the opposite direction of the two resultant forces, an intersection point can be found, and the intersection point is the stress source. The forecasting method has the advantages that multiple ground interference factors can be avoided by arranging the device in the drilling deep well, two kinds of information of ground inclination and ground stress are arranged in the same observation body to be comprehensively observed and analyzed, the two kinds of information are mutual evidence, and two sets of independent observation bodies are used for synchronously observing and finding the source and the direction of the ground stress at different underground depths, so that an earthquake forecast can be accurately made.

Description

technical field [0001] The invention relates to an earthquake prediction method and a three-dimensional ground stress and ground tilt comprehensive detection body, belonging to the technical field of earthquake detection and prediction. Background technique [0002] At present, although we have ground tilt and ground stress means in earthquake precursor observation, these two means are operating independently and are in a pattern of fighting each other. During the earthquake breeding period, various precursor information is intertwined. Appeared, various information co-existed. However, for a single observation station, even if it obtains such and other information, there will often be a passive situation, and it is not allowed to judge the credibility and authenticity of the information obtained. The reasons for this embarrassing situation are, first, the current All the ground tilt instruments are installed on the surface, and the information obtained is often mixed with ...

AI Technical Summary

Problems solved by technology

However, for a single observation station, even if it obtains such and other information, there will often be a passive situation, and it is not allowed to judge the credibility and authenticity of the information obtained. The reasons for this embarrassing situation are, first, the current All ground tilt instruments are installed on the surface, and the information obtained is often mixed with various uncertain information from the surface, which brings great difficulty to data application.

Second, the current observation instruments are often not in the same area, and the observation data have no internal correlation, lack of comparison and echo relationship, and lack of reference basis for information judgment

[0003] On the other hand, it is relatively easy to observe the lateral stress in the detection of the stress, but it is more difficult to observe the longitudinal stress. At present, there is no method for simultaneous detection of the lateral and longitudinal stresses. This situation needs to be changed urgently. Obtaining this index is of great significance for earthquake prediction because using a single in-situ stress and surface tilt observation data cannot solve an important information required for earthquake prediction-how to determine the source and direction of in-situ stress

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