With the accelerated urbanization process, a large number of tunnels are built and put into use; however, the relevant theoretical study lags far behind the booming engineering practice.

The Internet is booming, and now that software is running everything from mainframe computers to wireless phones, job opportunities are exploding in the computer science and engineering professions.

But behind the booming of construction industry, there is more and more shocking incident of engineering, the phenomenon of poor quality, cost overruns, schedule delays in projects is not poor.