According to the characteristic of Liaocheng-Tai’an natural gas duct excavation engineering of West-East natural gas transmission project

the suitable pattern of hole disposal

the blasting parameters

the structure of stage charge

the reasonable firing method and the detonation sequence of the blasting excavation are discussed. The principle of ditching blasting and the scheme of blasting construction are summarized based on the above analysis. The techniques of millisecond blasting and safety measures of reducing vibration and controlling blasting f1ying rock are put forward. So the security of communications cables and the surrounding facilities are guaranteed; and ideal achievement is obtained. Favorable conditions are created for the smooth progress of West-East natural gas transmission project.