On the basis of measurement and analysis of the blasting noise of the Three Gorge site,the auther carrys out research on some blasting noise control methods,such as successive difference blast,selective blasthole net parameters and maximum loosing blast,etc.

According to the geologic structure of the main stope,comprehensively using the advantages of hole after hole explosion and extrusion one,the demolition made breakthrough progress in the field that was difficult to be exploded.

Experimental research on notching wet beach of Yellow River by short-delay blasting;

Speeding up of concrete foundation demolition in plant building using technique of short-delay blasting;

Connecting with the actual situation of the blasting of highway eng in eering, this paper discusses on the significance of using short-delay blasting and its technical feasibility, and points out that the short-delay blasting can increase the charging quantity and working efficiency, and also can lower the i nfluence of blasting impact on the environment.

Application of millisecond blasting technology in Lanping open-pit mine;

In millisecond blasting engineering, the designed or selected time of delay is always different from the practical time of delay due to the delay errors of plain detonators, and influences the effect and successful implementation.

To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.

In the light of the theorety of millisecond delay blasting the machanism of im proving blasting fragmentsize is analysed when stage parallelhole cut is used in rock blasting in shaft drifting.

Determination of heading wall s reasonable resistance line in the case of short delay blasting;

The article introduces the construction condition of blasting exploiting in certain strip mine,proposes the application of deep-hole bench blasting,non-coupling load,and short delay blasting technique in mine exploitation,sets rational blasting parameters,and draws a conclusion that the scheme has well blasting effect,which has certain referential values for similar engineering.

Analysis is made of the action mechanism of burden to long-hole bottom spacing,hole bottom reversed blasting and multiple-row equal-level short delay blasting for effective improvement of ore-rock blasting efficiency.