The Rcscarch On The Blasting Excavation Technology Of Deep Foundation Ditch In Subway Projcct

China’s subway construction started relatively late. With the continuous development of thenational economy, China’s urbanization process has gradually accelerated. The development ofthe economic,the improvement of people’s living standards, the expansion of the city,and thehigh-frequency of people’s travelling, all of these make the urban traffic face a serious situation.With the development of China, The construction of the subway station has solved the trafficproblems,with its advantages,it has developed well in big cities.In the mid-1980s, Chinaintroduced a policy of developing subway in major cities. Then in the late1980s, Chinaemphasized the development of the subway. In the beginning of the new century,in the TenthFive-Year Plan,the construction of the subway has been included with a important position.In the subway construction, the construction of the station is an important part, in general,you can use digging machines such as a series of mechanical equipment to dig, but when facedwith special circumstances, machinery equipment is impossible to do the work perfectly,at thistime,blasting is necessary. At the same time, because of the environment of the subwaystation,the project of blasting will produce a series of impact.For example, blasting vibration onthe structure of surrounding buildings, blasting noise generated by the normal life of theresidents in the vicinity. How to solve security problems brought by the construction of thesubway station is the key.In this paper,we use the method of controlled blasting in the project of Wuhan railwaystation,after it’s been tested and improved,we know the effective method in complexenvironment and how to deal with the shock accompanied with the explosion, how to reduce thedamage to the constructions around, and how to reduce the effects on the people around, keepthem safe.