As a special geological hazard,rockfalls often suddenly occurs on man-made slopes or natural slopes,potentially endangering the safeties of human activities and foundation establishments near and below the slopes.

As the rapid development of economy in China,a great number of highways in mountainous areas will confront with more and more rockfall problems.

Kinematics combined with probabilistic and statistic analysis is adopted to calculate kinematic energy and bounce height,which are the control factors for designing rockfall protective structures.

Mechanism of action and prevention methods of slope rock fall hazard;

Research on restitution coefficient of rock fall

Rock fall, a geological hazard, has not attracted attention of researchers for a long time.

Study on the Impact Properties of Rock-fall onto Cushion Material

The impact pressure of rock-fall is an important parameter for shield structure design.

In the design of rock-fall protection project,the proper location and reasonable intercepting height of the intercepting system are most important factors,which directly are concerned with success or failure of the system.

Obviously,risk analysis of encountering rockfalls along these traffic routes is of extreme importance for zoning of rockfall hazards and optimum scheme of mitigation costs.

Engineering geological investigation on mountainous hazards along Basu-Linzhi section of the south line of Sichuan-Tibet highway,is conducted,which indicates that rockfall hazard is extremely serious and should be treated as a special kind of hazard with great attentions.

4 m in length and with slope gradient of 39～60°,nearly 90° in local,256 times rolling tests on rock blocks with the weight of 9.