METHOD AND DEVICE FOR AUTOMATIC MONITORING AND PREDICTION tectonic processes From site selection and temporary effect on earthquakes and volcanoes

摘要

FIELD: mining.;SUBSTANCE: test ground is determined for monitoring of tectonic processes. Wells are drilled and cased with plastic pipes. Then, an open shaft is drilled, which is located below zone of intensive surface water exchange and below the depth of constancy of seasonal temperatures, mainly in a lithologically consistent mass of dense (crystalline) mined rocks on the test ground. A measuring device is installed into the open shaft and the well is filled with viscous clay mud the heat conductivity of which is equal to heat conductivity of mined rocks at the measurement interval. Besides, the device is capable of automatic measurement at the specified time pitch of temperature gradients, transmission of measurement data to a surface unit and then to the investigation centre. There calculated as function U(τ) in real time (τ) is dependence of parameter U=gradT/gradT₀ as ratio of the measured temperature gradient and its value during periods that are aseismic for earthquakes or inactive for volcanoes. Trend of the function is processed and forecast using known methods and considering the measured action of the Moon, the Sun and dynamics of atmospheric pressure. Forecast values of the parameter are added to continuously updated maps of the test ground and conclusions on development of tectonic activity are made. As per the data for the well closely located to the occurring earthquake focus on the test ground there continuously analysed is dynamics of the first and the second derivatives of the function trend, and considering their maxima, a favourable moment of external artificial action is determined near the occurring focus.;EFFECT: monitoring and forecasting of tectonic processes, selection of a place and time of action on them.;2 dwg