The calculation of surface deep-hole blasting parameters of Paishanlou gold mine in Liaoning;

Discussion on the rock fragmentation of deep-hole blasting for Guishan quarry;

To lower blasted boulder yield is one of the most important technical considerations in deep-hole blasting operations of mine.

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.

Study and application on the technique of bottom priming in medium-length hole blasting in Paishanlou gold mine;

Combining with the actuality of Paishanlou gold mine,the issue analyzed the safeguard mechanism to realize the mining capacity of 1 800t/d in the following aspects,the selection of construction teams,block mining,midsection haulage,stoping method and bottom priming technique.

The blasting mechanisms of collar priming and bottom priming are analyzed, also the advantages and disadvantages of two priming methods are compared.

With a large finite element analysis software,the numerical simulation of the blasting process of water coupling blasting with fuse was made,and the spreading of the blasting stress wave in concrete was studied.

The blasting principle of water coupling blasting hole with fuse is discussed.

Influencing factors of long-hole blasting technique for hard rock tunnel and reasonable determination of these factors;