According to the blown-up theory (described in references [1,2]) for n
onlinear dynamic system on the relationship of general pansystem trans
formation, optimisation and panderivative blown-up, by means of blown-
up theory, we demonstrate that the blown-up of nonlinear heat conducti
ve equation is similar to the evolution of observational ground temper
ature 'flow' in this paper. And a successful simulation of Tang Shan E
arthquake in 1976 has been given. The result of simulation indicates t
hat the blown-up of ground temperature 'flow' around earthquake can be
applied to predict earthquake. As for Tang Shan Earthquake, the predi
cting time is about five months. If ground temperature 'flow' that emb
odies the earth's crust satisfies the unintegral panderivative equatio
n, we can demonstrate its mechanism and forecast earthquake with enoug
h information.