According to problems encountered in excavation construction of Liyangou tunnel,such as excess under-excavation,channel effect,blind shot,fault and other technical difficulties corresponding countermeasures are proposed as well as supervision and management methods to ensure construction safety and quality.

According to the analysis of channel effect under blasting vibration in soil medium ,the regular pattern of particle vibration when blasting vibration passes through the channel has been gotten,and the principle of blasting vibration,frequency characteristics and wave pattern has been analyzed in detail.

Channeling of energetic charged particle in the nanotubes-rope exhibits a large diameter of the channels and weak de-channeling factors.

Channeling of high energy particle in the nanotubes-rope shows a large diameter of the channels and weak de-channeling factors.

Motion damping in channelling effects and the chaotic behaviour of a system;

The global bifurcation and chaotic behaviours are analysed using Melnikov technique,indicating that the random phenomenon of the channelling effect of the superlattice are related to chaotic behaviours of the system.

Study of channeling effect by impact of highly charged ions on crystal surface of Si(110);

The effect of embedment depth was first analyzed including Gibson effect,trench effect,side-wall contact effect,retaining wall effect and floating foundation effect.

Five effects of embedment depth,namely,Gibson effect,trench effect,side-wall contact effect,retaining wall effect and floating foundation effect,are analyzed.