Prediction of Residual Gas Content during Coal Roadway Tunneling Based on Drilling Cuttings Indices and BA-ELM Algorithm

Table 1

Sample dataset for drilling cuttings indices and residual gas content in coal seam.

No.	K1 (mL/(g·min^1/2))	S (kg/m)	Q (m^3/t)
1	0.29	3.0	6.233
2	0.12	2.9	5.230
3	0.15	2.9	5.375
4	0.16	2.9	5.417
5	0.05	3.0	4.578
6	0.04	3.0	4.090
7	0.03	2.8	4.020
8	0.18	2.9	5.558
9	0.14	2.9	5.344
10	0.18	3.2	5.611
11	0.10	3.1	5.587
12	0.30	3.1	6.127
13	0.13	2.9	5.397
14	0.24	3.1	5.709
15	0.04	2.9	4.977
16	0.08	2.8	4.755
17	0.07	3.1	5.370
18	0.20	3.1	6.031
19	0.25	3.7	6.510
20	0.31	3.2	6.266

Note. This table lists the first 20 groups of the sample data.