Back Analysis of Geomechanical Parameters in Underground Engineering Using Artificial Bee Colony

Table 5

Training samples and model parameters of LSSVM.

Number of samples	𝑃1 (Mpa)	𝑃2 (Mpa)	𝜑 (°)	Displacement						𝛼
				MP1		MP2		MP3		MP1𝑥	MP1𝑦	MP2𝑥	MP2𝑦	MP3𝑥	MP3𝑦
				𝑥	𝑦	𝑥	𝑦	𝑥	𝑦
1	10.0000	5.0000	20.0000	−0.8380	−1.3600	1.5500	−0.0231	−2.0200	−1.5100	1.4473	2.0149	−0.8992	−0.3815	1.5989	2.2484
2	10.0000	7.5000	25.0000	−0.4990	−2.3300	1.3900	−0.0687	−1.6700	−1.5800	1.6424	0.8880	−0.9801	−0.3294	1.6348	1.9749
3	10.0000	10.0000	30.0000	0.0000	−3.1300	1.4000	−1.4400	1.4000	−1.4400	2.1479	0.2439	−0.9786	−1.6870	4.9088	2.1843
4	12.5000	12.5000	35.0000	0.0000	−3.9100	1.7500	−1.8000	−1.7500	−1.8000	2.0307	−0.3980	−0.5684	−1.8560	1.4959	1.7655
5	15.0000	15.0000	40.0000	−0.0001	−4.7000	2.0900	−2.1600	−2.1000	−2.1700	2.0040	−1.0849	−0.2202	−2.1514	1.2404	1.4127
6	15.0000	5.0000	25.0000	−2.0000	−1.4700	2.0800	0.8610	−3.1900	−2.7200	0.2187	1.8194	−0.3108	0.5215	0.3286	0.9391
7	15.0000	7.5000	30.0000	−1.6800	−2.5600	1.8300	0.1890	−2.7700	−2.8200	0.5089	0.6915	−0.5137	−0.1191	0.5530	0.7972
8	15.0000	10.0000	35.0000	−1.2300	−3.4700	1.7400	−0.5740	−2.4200	−2.7500	0.6722	0.0683	−0.5353	−0.5142	0.7871	0.7058
9	15.0000	12.5000	40.0000	−0.6420	−4.1900	1.8300	−1.3800	−2.1800	−2.5200	1.0483	−0.3389	−0.5100	−1.0033	1.0326	0.8752
10	15.0000	15.0000	20.0000	−0.0001	−4.7000	2.0900	−2.1600	−2.1000	−2.1700	2.2964	−1.2063	−0.4593	−2.4334	1.6207	1.6580
11	20.0000	5.0000	30.0000	−3.4100	−1.9500	2.2700	1.8500	−4.2500	−4.3300	−0.9584	1.4147	−0.1741	1.3821	−0.5279	−0.4169
12	20.0000	7.5000	35.0000	−3.0700	−3.2100	1.9200	1.1000	−3.6000	−4.3700	−0.4940	0.2093	−0.4605	0.5409	0.1538	−0.3109
13	20.0000	10.0000	40.0000	−2.5800	−4.2600	1.7400	0.2750	−3.1500	−4.3100	−0.1430	−0.6938	−0.6499	−0.1060	0.5071	−0.3365
14	20.0000	12.5000	20.0000	−1.2600	−3.6100	3.0300	−0.7560	−3.7300	−2.9900	0.9442	−0.0545	0.4200	−0.9120	0.0125	0.7845
15	20.0000	15.0000	25.0000	−0.9990	−4.6500	2.7900	−1.3700	−3.3400	−3.1500	1.2917	−1.1019	0.1791	−1.6037	0.4438	0.6994
16	25.0000	5.0000	35.0000	−5.0300	−2.8100	2.2000	2.9600	−5.3200	−6.2900	−2.3159	0.7126	−0.2344	2.3232	−1.4578	−2.0741
17	25.0000	7.5000	40.0000	−4.5700	−4.3400	1.7200	2.0100	−4.2700	−6.2200	−1.7211	−0.8042	−0.7054	1.2559	−0.3011	−1.8612
18	25.0000	10.0000	20.0000	−2.5600	−2.5500	4.0000	0.6760	−5.3900	−3.8400	−0.0681	0.8422	1.2115	0.2427	−1.3147	0.1347
19	25.0000	12.5000	25.0000	−2.5800	−3.8300	3.5200	0.2050	−4.8900	−4.2900	−0.1085	−0.2739	0.7151	−0.1537	−0.8165	−0.2612
20	25.0000	15.0000	30.0000	−2.3100	−5.0100	3.2000	−0.3910	−4.4100	−4.5200	0.2387	−1.3780	0.5252	−0.8035	−0.4328	−0.4061
21	30.0000	5.0000	40.0000	−7.0100	−4.2700	1.9200	4.2500	−6.3900	−8.5200	−4.4142	−0.7485	−0.5555	3.7206	−2.5680	−4.4067
22	30.0000	7.5000	20.0000	−4.1800	−1.5000	5.1000	2.1700	−7.4200	−4.8300	−1.6564	1.9159	2.3915	1.6943	−3.4243	−0.8180
23	30.0000	10.0000	25.0000	−4.3200	−3.0600	4.3800	1.8900	−6.5200	−5.5400	−1.6996	0.3741	1.5582	1.3646	−2.3453	−1.4311
24	30.0000	12.5000	30.0000	−4.1800	−4.5200	3.7600	1.3100	−5.8600	−5.9500	−1.5641	−0.8404	1.0366	0.8632	−1.8027	−1.7517
25	30.0000	15.0000	35.0000	−3.8900	−5.8500	3.3200	0.5890	−5.2300	−6.1900	−1.3480	−2.2716	0.7182	0.1455	−1.3269	−2.1053
𝑏	—	—	—	—	—	—	—	—	—	−2.4124	−3.4816	2.5241	0.3809	−3.7541	−3.9253