Influence of Different Excavation Sequence of Double-Side Heading Method on Supporting Structure

Table 2

Final displacement value of monitoring points in initial support of tunnel unit: mm.

Scheme	①	②	③	④	⑤	⑥	⑦	⑧
I	−13.4	−6.1	−6.8	−2.0	−2.4	−0.6	−0.9	1.4
II	−12.8	−7.0	−8.0	−3.1	−3.8	−0.4	−0.6	1.5