ABSTRACT
Smooth blasting and pre-splitting blasting technologies, as two forms of controlled rock blasting, developed with the wide use of the deep-hole blasting technology. Their successful application guarantees structure quality and slope safety. Early in the 1980s, the Gezhouba project used pre-splitting blasting technology to ensure the quality of the slopes excavated on large areas of sandstone, which shows the advanced level of China’s presplitting blasting technology. In the construction of the Three Gorges Dam and many hydropower stations, not only were vertical pre-splits widely used, but so were horizontal ones, ensuring the excavation quality of buildings of power plants.
