Influence of Utility Tunnel on the Lower Part of the Existing Double-Track Shield Tunnel in Loess Soil

Table 1

Model working condition statistics.

Condition	H/D	I/D
1	3	3
2	3	3.5
3	3	4
4	3	4.5
5	3	5
6	3.5	3
7	3.5	3.5
8	3.5	4
9	3.5	4.5
10	3.5	5
11	4	3
12	4	3.5
13	4	4
14	4	4.5
15	4	5
16	4.5	3
17	4.5	3.5
18	4.5	4
19	4.5	4.5
20	4.5	5
21	5	2.5
22	5	3
23	5	3.5
24	5	4
25	5	4.5
26	5	5