Research Article

Study on the Division of the Affected Zone under Construction Unloading and Its Construction Sequence of the Multiline Parallel River-Crossing Pipe Jacking

Table 7

Surrounding stratum critical clear distance Dmin.

Hs (m)1.02.03.04.05.06.07.08.0

(m)2.01.011.682.373.284.025.106.007.28
5.02.863.514.025.135.957.088.379.66
8.0——6.007.258.239.2110.8312.12