The Real-Time Automated Monitoring System for Lateral Deflection of Underground Structures

Table 1

The progress summaries in typical construction stages.

Date	Construction progress summaries
2017-07-11 (S0)	Monitoring system installation and zero modulation of J2 and J16 are completed.
2017-09-11 (S1)	The depth of the middle and northern parts of the excavation is about 4 m and 5 m, respectively. Supporting structures in south part of the west side are being constructed.
2017-11-11 (S2)	The depth of the west and north parts of the excavations is about 13 m. Monitoring system installation and zero modulation of J9 and J12 are completed.
2018-01-11 (S3)	The depth of the whole excavation is about 13 m. The second layer of the support structure in the southwest corner is under construction.
2018-03-10 (S4)	The local depth of some parts of the excavation reaches the designed depth.
2018-07-11 (S5)	The depth of the whole excavation reaches the designed value. Raft structures are being constructed in some local parts.
2018-09-12 (S6)	Underground structures are being constructed. Support structures in the southwest corner have been removed.
2018-12-25 (S7)	The core structure above ground is being constructed. The excavation except for some eastern local parts has been backfilled.