Abstract:This study analyzes the relationship between porosity and temporal characteristics of the volume compressibility coefficient of the Dadianzi well and provides reliable data and information for earthquake prediction. Data from the Dadianzi well are digitized data of the water level that are checked by data processing and are used because the well observation system is relatively stable, the measuring instrument works properly, and the observed data have high reliability. On the basis of relevant theories from mechanics, elasticity, and fluid mechanics, making use of the elastic state of the aquifer medium and a three-phase change model of material volume, the porosity, volume compression coefficient of the solid skeleton, and volume compression coefficient of water in the aquifer were calculated using digitized data of the well water level. The results show that there exists a power function relation among the three aforementioned factors. In the first quadrant, the volume compression coefficient of the well aquifer solid skeleton increases with an increase in porosity, whereas the volume compression coefficient of water decreases with an increase in porosity.
