Research On Development Mechanism And Control Principle Of Dangerous Rock

On the base of analysis to investigation status in quo on dangerous rock nation and abroad, founded by the ten-5 Year key found of the nation, i.e: "the Research on Evaluation System of Geologic Disaster Using 3S Technique" (2001BA604A02-3), taking the Taibaiyan Gangerous Rock Project of Wanzhou in Chongqin as an example, the author makes some studies on development mechanism and control principle of dangerous rock. In this paper, results include four parts, i.e:â‘ Research on the development mechanism of dangerous rockBased on action for various factors to control formation and development of dangerous rock, the author puts forward the unload mechanism in the paper, so as to cognize dangerous rock deeply and make certain foundation to stability analysis.â‘¡Research on stability of dangerous rockBased on the research on development mechanism, the author classes dangerous rock into three types from fracture, i.e: slip dangerous rock, fall dangerous rock and revolved dangerous rock. According to influence for ground water and earthquake to steady feature of dangerous rock, the author sets fissure water distribution in structure plane and found stability calculation methods to every type dangerous rock, then makes some numeric analysis to displacement and stress variation under various loads in ADINA software.â‘¢Research on route and impaction rockfallIt is well known that rockfall comes from unsteady dangerous rock. Route of rockfall is controlled by original position and unsteady mode of dangerous rock and ground features. The author divides rockfall movement into three stages, i.e: colliding, slipping and rolling, and founds movement equations every stages, so sets up impaction calculation method for rockfall to structure using force conduction theory.â‘£Control principleMeasures to control dangerous rock can be classed into active control, passive control and forecast system. Taking anchorage and bolster as examples, the author puts forward anchor calculation method.