Table 1 Data of each component at different methane concentrations.

From: Study on gas explosion propagation law in excavation roadway with TBM

Methane concentration (%)

WCH4 (kg/m3)

WO2 (kg/m3)

WN2 (kg/m3)

7

0.0401

0.2237

0.7362

8

0.0460

0.2223

0.7317

9

0.0520

0.2209

0.7271

9.5

0.0550

0.2202

0.7248

10

0.0581

0.2195

0.7225

11

0.0642

0.2181

0.7178

12

0.0703

0.2166

0.7130

13

0.0766

0.2152

0.7083

14

0.0828

0.2137

0.7035