Dynamical analysis on the whole process of acute colliding high speed landslide;

A new method for forecasting the severity of activity of high speed landslides is presented, in which the variations in the deformation and speed of the sliding mass can be considered simultaneously with the conversion and dissipation of energy.

Based on the analysis on the formation mechanism and characters of motion and accumulation for high speed landslide, the speed and deformation of the sliding mass are of inhomogeneity, and its motion process is in company with the accumulation, release and loss of strain energy.

Many serious disasters are resulted from high-speed landslides,which take huge energy and high speed as their characteristics.

In the paper the high-speed landslides of Guizhou are related by the actual examples, the existence of the high-speed landslides in Guizhou is confirmed and their identified ways are accounted.

Experimental study on impact effect of high-speed landslide;

The effects of the thermal and the pore pressure generated by high-speed landslide are discussed.

ith the further study on the high-speed landslide in recent years, a new form of geological hazard -debris flow which is often accompanying with the high-speed landslides hasdrawn more and more attention in the engineering geology field, particularly since the accurencesof Shalashan Maintain Front debris flow, Xintan Sanyogou debris flow and Shijiapou debris flow.

A deformation energy catastrophic model of highspeed landslide before sliding;

During the process of large highspeed landslide in the set-out range,due to the lock segment suddenly snipped,shearing stress is released and thus pore water pressure is suddenly increased,which may produce a very high increase in temperature,convert the water in sliding zone into vapor and create steam pressure.

Many large highspeed landslides could fly in the air at the short-range stage.

In particular,large-scale landslides are dominant and extremely important.

As we known,18 large-scale landslides are along the mainstream of Three Gorge Reservoir area in Badong County,with the volume above 1 million m3 respectively.