Based on the specific condition of the Pengjia Garden Tunnel

the original construction plan is optimized during the construction. According to the numerical simulation of the construction condition

the two sets of construction plans which have been adopted during the construction process have been confirmed

reasonable excavation sequence and supporting methods are also recommended. On the basis of the active construction plan

we can obtain the influence on the arch and surface subsidence caused by the various working procedure. Combining the massive information obtained by the scene gauging

the studies of the settlement of the vault and the surface settlement have been carried out

so that we can exactly forecast the coming developments such as destroy、deformation and so on. Based on this

we can also come to some related conclusions

these achievements not only provide the extremely important instructional function to the project so that it can be carried out smoothly

but also pile up experience and practice material for the similar project in the future.