Field Experiment in Soultz-sous-Forêts: Changes of the Pattern of Induced Seismicityстатья
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Дата последнего поиска статьи во внешних источниках: 2 сентября 2014 г.
Аннотация:The data of the known field experiment on water injection in the
borehole were analyzed. Parameters of self-similarity of seismicity were
estimated in comparison with the changes of water pressure. Changes of
seismicity parameters that indicate the redistribution of the failure from
lower scales to upper are revealed. The total number of earthquakes per
series of the water initiation found to be depended exponentially on the
water pressure and seismic activity maximum is delayed gradually relative
to beginning of initiation. The growth of induced seismicity zone in
time differs from diffusion model for water flow in the porous medium.
Analysis carried out from laboratory data indicates that diffusion growth
of the failure area may be realized in the dry specimen, without fluid. It
could be assumed that both kinetic processes – water and the failure diffusion
– can be significant for the development of seismicity induced by the
water injection.