exchange theory
4.The study mainly performed method of the combination theory with experiment and the contrastive research, adopted YJP-Q30/2X heater as study object by contrast with the configuration, technology and use characteristics of YJ-Q27.9/2X heater, and accomplished the development of DIESEL-CNG dual fuel fired heater with reservation of some components in suit with oil fired function and the guide of combustion theory, heat exchange theory, aerodynamics and so on.
5.To discuss the problem of the tunnel deformation joint setting,the tunnel super-length reinforced concrete structure was measured at on the spot under the effect of environmental temperature,and one dimension unsteady heat exchange theory and temperature stress theory to calculate the tunnel structure temperature and deformation under the effect of environmental temperature.
6.Based on the Betti energy exchange theory, a study was made on the constitutive law and damage evolution equation of fissured rock mass in complex stress states and the variation of seepage tensor with crack evolution, with energy exchange and interaction considered in the process of crack development, then a coupled seepage?damage model was developed for analysis of multi?fissured rocks.
