Stability Analysis of Water-Resistant Strata in Karst Tunnel Based on Releasable Elastic Strain Energy

Table 3

RMFI values of each monitoring point of water-resistant strata under different cave spans.

Karst cave span D/m	Monitoring points’ position
	1	2	3	4	5	6	7	8	9	10
4	2.196	1.172	0.794	0.645	0.594	0.595	0.645	0.739	0.888	1.101
8	2.614	1.900	1.435	1.199	1.078	1.087	1.137	1.269	1.515	1.596
12	2.318	2.574	2.072	1.812	1.705	1.713	1.838	2.122	2.633	1.608
16	2.105	2.934	2.604	2.426	2.385	2.515	2.854	3.583	3.191	1.636
20	1.981	2.947	3.137	3.135	3.273	3.680	4.472	5.420	3.196	1.644