Research Article

Efficient Excavation and Support Cooperation Technology for Surrounding Rock of Deep Buried Long-Distance and Large Section Gob-Side Roadway: A Case Study

Table 1

Rock stratum occurrence and mechanical parameters.

NumberLithologyThickness (m)Density (kg·m-3)Bulk modulus (GPa)Shear modulus (GPa)Internal friction angle (°)Cohesion (MPa)Tensile strength (MPa)

7Medium sandstone49.4270011.36.738.06.22.7
6Siltstone12.6246010.88.138.02.81.8
5Medium sandstone16.4270011.36.738.06.22.7
4Coal1.218201.91.624.21.91.9
3Siltstone14.9246010.88.138.02.81.8
2Medium sandstone8.9270011.36.738.06.22.7
1Siltstone3.8246010.88.138.02.81.8
03-1 coal5.818201.91.624.21.91.9
-1Siltstone4.9246010.88.138.02.81.8
-2Medium sandstone2.1270011.36.738.06.22.7
-3Siltstone6.0246010.88.138.02.81.8