Analytical Study on Surface Settlement Troughs Induced by the Sequential Excavation of Adjacent and Parallel Tunnels in Layered Soils

Table 2

Data obtained from measurement and fitting.

Case NO.	Monitoring section	(m)	(m)	(m)	(m)	(mm)	(m^3/m)	(m)	(mm)	(m^3/m)
1	CS-8D	20.1	15	19.26	3.85	3.4	0.033	9	6.5	0.147
2	SS-5T-52E-S	22.2	20	16.45	3.29	4.3	0.035	13	15.4	0.501
3	S19	15	15	10.42	2.08	1.9	0.010	7	8.8	0.154
4	S35	15	16.5	8.72	1.74	1.8	0.007	6	8.8	0.131
5	HS-2	17.4	20	17.46	3.49	27.0	0.236	8	43.7	0.873
6	HS-3	18.4	20	20.98	4.19	19.1	0.201	7	29.9	0.523
7	HS-5	35.6	20	39.91	7.98	7.7	0.155	15	22.6	0.733
8	HS-6	37.6	20	42.15	8.43	7.0	0.148	15	12.8	0.482
9	HS-7	44	20	49.26	9.85	3.3	0.083	22	6.4	0.352
10	HS-8	46.5	20	51.9	10.38	4.1	0.116	23	6.0	0.347
11	H1	11	13	12.09	2.42	4.4	0.026	6	19.0	0.285
12	H6	16.4	13	20.08	4.02	6.6	0.067	8	15.8	0.316
13	H7	17	13	21.20	4.24	4.3	0.046	9	17.8	0.401
14	H15	14	13	16.77	3.35	5.7	0.048	7	13.9	0.243

Note: Cases 1-2 are from Project 1, Cases 3-4 are from Project 2, Cases 3–10 are from Project 3, and Cases 11–14 are from Project 4.