This article introduces key technologies of reserving rock partition wall and existing railway slope protection replacing wall type shelving protection,for carrying out the A-class rock controlled blasting in construction of electrified railway double track-thin layer rock mass pre-splitting demolition and partition wall directional blasting construction technique.

Energy-concentrated pre-split blasting and slope stability analysis;

An application of technology of large size upright deep hole pre-split blasting in Yunfu Pyrite Mine is introduced, and　some improvement concrete measures in according to these problems existed in the practice are presented in this article.

For example of granite,block stone mining analyzed deeply the blasting parameter; the construction point of pre-split blasting engineering, and evaluated the blasting effect.

Study of presplitting blasting experiment in water-bearing blasthole of open pit slope;

Calculation of presplitting blasting parameters of open slope;

Presplitting Blasting Technology Apply in Jin Ping Hydropower Station Project;

Study on wide space pre-splitting blasting in Bayanghe stock yard;

Aplication of short delay pre-splitting blasting technology among and inside deep holes in engineering blasting of fragment room;

Experimental study on short delay pre-splitting blasting among the holes;