1. The determination of damage height of superincumbent stratum of goaf has immense meaning for safety and reasonable exploitation of coal seam under water body, building and railway.

2. First, the superincumbent improvement of serving system in Wasin emporium can guarantee the best services effectively.

3. Superincumbent layers of dead plants cut off the air and arrested decomposition.

4. Most of the traditional jurisprudential study are established in official position, so they are limited to tile scope of "state law" and the superincumbent manner of thinking.

5. By using the numerical modeling we find that the superincumbent bed has the problem of uneven settlement after loading.

6. The evolution of urban system in the Yangtze Delta is dominated by the self-organization from bottom to top and the superincumbent organization.