A Research of the Influence of the Discontinuity Attitude to the Stability of Rock Slopes using Key Block Theory

• Main Authors: Chin-Chi Hsu, 許清吉
• Other Authors: Chihsen T. Lin
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/27620939013740249798

碩士 === 國立高雄第一科技大學 === 營建工程所 === 94 === Taiwan is a small island but the mountain area is about 74 % and the population is quite high. As the mountain area can afford a suitable recreational living environment including good sight of view from the house and fresh air for the residents, the house builder often would like to build houses in the area. However, as Taiwan is located in the colliding area of Eurasian Plate and Philippine Sea Plate, the geological condition of rocks in the mountain area is quite complicated and fractured as a result of the slope failure often encountered. It is a valuable research subject for geotechnical engineers to find the method for early evaluation of the slope stability to prevent the modification of dangerous slopes in the planning stage. The traditional analysis for the rock slope has limitation itself as the result of its narrow applications in the subject. In 1985, Dr. Gen-hua Shi first proposed the Key Block Theory by improving the traditional methods of Hemisphere Projection Method and incorporating the Topology and Set theories. A series of computer programs were also developed by Shi based upon the basic theory. The programs are quite user-friendly and applicable for the systematic analysis for rock engineering. This research introduces the basic Key Block Theory in the beginning. The following work is to comment and verify the developed computer programs. The last part is to apply the previous research results to the stability analysis of rock slopes in the plane and wedge failure problems. The optimal attitude for the slope modification for a slope is also included in the research. It can be highly expected to apply the developed technique by using the computer programs to the reinforcement of unstable rock slopes or the early evaluation of slope stability design in order to achieve the goals for safer and more efficient slope constructions