Research Article

Study on Rules of Fault Stress Variation Based on Microseismic Monitoring and Numerical Simulation at the Working Face in the Dongjiahe Coal Mine

Table 2

The mechanics and physical parameter statistics of rocks in model.

Rock stratumElasticity modulus (MPa)Compressive strength (MPa)Thickness (m)Friction angle (°)Poisson’s ratio (−)Class density (kg/m³)

1Medium grain sandstone85002913280.262450
2Fine siltstone82003541280.262450
3Medium grain sandstone85002912280.262450
4Fine siltstone82003515280.262450
5Medium grain sandstone85002910280.262450
6Fine siltstone82003513280.262450
7Medium grain sandstone85002914280.262450
8Fine siltstone82003533280.262450
9Medium grain sandstone8500298280.262450
10Coarse siltstone88004513260.242450
11Fine siltstone82003521280.262450
12Fine grain sandstone7800244290.282450
13Coal165082360.321500
14Coarse siltstone8800458260.242450
15Fine grain sandstone7800246290.282450
16Medium grain sandstone8500294280.262450
17Fine grain sandstone7800243290.282450
18Coal165082360.321500
19Quartz sandstone88504838250.242650
20Fault10007280.262000