The application of blasting technique in building cubic meter of stone excavation

In this paper,construction technologies for rock excavation in Xiushan are introduced,such as deep loosening blasting and smooth blasting,detonation propagation out of blast-hole and millisecond blasting in the blast-hole,so as to supply eligible filler for roadbed construction and achieve good smooth blasting.

It is analysed of the surface movement resulting from engineering excavation, such as underground mines, open-pit mining, railway, highway, foundation pit, tunnel and underground engineering, and its deformation's characteristics.

Meanwhile,being aimed at the present not-unified calculation standard of earth pressure,the paper suggested adopting a unified standard to judge the calculation condition in order to standardize the calculation of earth pressure on retaining structure in excavated volume engineering,which is worthwhile in engineering.