Research Article
Sealing Behavior and Flow Mechanism of Expandable Material Slurry with High Water Content for Sealing Gas Drainage Boreholes
Table 3
Parameters of different slurries and the strata.
| | Name | Physical properties | Expression | Units |
| | Viscosity time-varying expandable slurry with high water content | Slurry (W : C = 6 : 1) | Viscosity | (1) | Pa·s | | Slurry (W : C = 7 : 1) | Viscosity | (2) | Pa·s | | Slurry (W : C = 8 : 1) | Viscosity | (3) | Pa·s | | Volumetric compression modulus | 1.2 × 10−10 | Dimensionless |
| | Nonviscosity time-varying expandable slurry with high water content | Slurry (W : C = 7 : 1) | Viscosity | 0.3 | Pa·s | | Volumetric compression modulus | 1.2 × 10−10 | Dimensionless |
| | Coalbed | Initial porosity | 0.38 | Dimensionless | | Initial permeability | 8.89 × 10−13 | Dimensionless | | Elastic modulus | 1.85 × 109 | Pa | | Poisson’s ratio | 0.31 | Dimensionless | | Volumetric compression modulus | 1.66 × 109 | Pa |
| | Mudstone | Initial porosity | 0.29 | Dimensionless | | Initial permeability | 3.48 × 10−14 | Dimensionless | | Elastic modulus | 5.46 × 109 | Pa | | Poisson’s ratio | 0.35 | Dimensionless | | Volumetric compression modulus | 5.45 × 108 | Dimensionless |
| | Fine sandstone | Initial porosity | 0.54 | Dimensionless | | Initial permeability | 5.17 × 10−10 | Dimensionless | | Elastic modulus | 2.93 × 1010 | Pa | | Poisson’s ratio | 0.23 | Dimensionless | | Volumetric compression modulus | 5.27 × 1010 | Pa |
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