The anticipated blasting results are obtained by using the in-hole and out-hole millisecond delay blasting technology,thus ensuring the safety of surrounding installations and buildings.

The millisecond delay blasting seismic waves collected from the weakly rotten granite site are analyzed.

This paper discussed the utilization range of blasting vibration velocity formula and the expression of counting charge amount of millisecond delay blasting in the "Safety Regulation for Blasting(GB 6722——2003)".

We used the millisecond short delay blasting and the reasonable security protective measures in different spots to guarantee the smooth collapses of two buildings and security of the demolition environment.

The millisecond short delay blasting and pre-treatment are used to guarantee the smooth collapses of dust treatment center station and security of the demolition environment.

Research on the millisecond blasting in surface;

Design and practice of the millisecond blasting;

The adoption of a coal mine on the 5th impact 1507,1508 to face pressure monitoring and management,and vigorously implemented millisecond blasting process of reforms in the transport equipment,electrical and mechanical strengthening management,and other measures,summed up the steep rock face pressure blasting mining mining technology,which have a certain practical significance.