Review on flow stability and breakdown of thin liquid films;

In this paper, the measurements for the thickness of the free fallingliquid films which doesn t contact measure instrument and the experimentalstudies to the breakdown characteristic of the free falling liquid films arepresented by the experiment equipment which design and build independently.

Study on fracture mechanism and catastrophic collapse of strong roof strata above the mined area;

Fracture analysis of intermediate tie rod was carried out by metallography, scanning electron microscope and EDS.

With a specially designed experimental instrument,the mechanism of load transfer within an unconsolidated confined aquifer and its effect on compound breakage of key strata have been studied.