Jinan city locates in connection belt of moutain and plain in north part of Luzhong area. It has complicated geological structure and lots of geological hazards. Through survey, 71 hidden danger spots of geological hazards have been found. In recent few years, accompanying with continuous increasing of population, and heightening of human engineers, geological hazards showed a continuous developing trend. Entering into 21 century, direct economic loss can reach 300 million which caused by geological hazards...