According to the complex environment in the blasting area,the nature of the blasted rock and the operational facilities on the spot,the authors put forward ideas about the horizontal short hole collapsing blasting plan and the millisecond blasting outside and inside the hole.

Longhole controlled blasting techniques were applied and the coverage protective measures were taken during construction in accordance with technical specifications for water conservancy & hydropower and rock blasting,thus to ensure safety of the EHV power supply line and re- lated towers in the emergency water supply channel of the Beijing-Shijiazhuang section excavation work

During the construction of the Shunping section of the South-to-North Water Transfer Project,the amount of rock blasting is enor- mous.

Here the auther adopted scientific design and actualized for amour blocks blasting project,aimed at the character and difficulty of rock blasting project in the scurviness tropic desert.

The necessity to study frozen soil blasting method is dis cu ssed.

In the construction of Qinzhuo-Luwu first class highway, different blasting methods were adopted for the highway sectors with different characteristics by Guangxi corporation for civil engineering construction & mineral exploration.