Due to the complex system brittleness theory and the brittleness link entropy method,the correlativity of the whole lifeline system was estimated and evaluated by using the system integrate brittleness link entropy and the vulnerability of the whole lifeline system was quantized through judging the interacting relationship among the sub-systems.

The theory of brittleness is applied to analyze brittle relation between accident and mining production system,and the brittle relationship analysis model is constructed from four aspects of human,machine,environment and operation management.

Tan Chun and Wang Xi-feng are good hands in managing household in《Dream of Red Mansion》,but they are different in conducting themselves,the attitude toward power and the relationship of being born of lineal descent and being born of a concubine.