Advances in Civil Engineering

Research Article

An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone

Table 1

Pressure gradient and flow velocity parameters of specimen A (1 : 0).


Axial displacement (mm)	Piston velocity (mm/min)	Flow velocity (m/s)	Pressure gradient (MPa/m)	Permeability (m²)

10	10	3.13 × 10⁻⁵	−0.09	9.49 × 10⁻¹³
	20	6.25 × 10⁻⁵	−0.33
	30	9.38 × 10⁻⁵	−0.60
	35	1.09 × 10⁻⁴	−0.87

15	10	3.13 × 10⁻⁵	−0.12	6.84 × 10⁻¹³
	20	6.25 × 10⁻⁵	−0.38
	30	9.38 × 10⁻⁵	−0.85
	35	1.09 × 10⁻⁴	−1.06

20	10	3.13 × 10⁻⁵	−0.14	5.83 × 10⁻¹³
	20	6.25 × 10⁻⁵	−0.41
	30	9.38 × 10⁻⁵	−0.95
	35	1.09 × 10⁻⁴	−1.16

25	10	3.13 × 10⁻⁵	−0.19	3.05 × 10⁻¹³
	20	6.25 × 10⁻⁵	−0.53
	30	9.38 × 10⁻⁵	−1.12
	35	1.09 × 10⁻⁴	−1.38

30	10	3.13 × 10⁻⁵	−0.31	1.53 × 10⁻¹³
	20	6.25 × 10⁻⁵	−0.75
	30	9.38 × 10⁻⁵	−1.53
	35	1.09 × 10⁻⁴	−1.83

35	10	3.13 × 10⁻⁵	−0.44	1.12 × 10⁻¹³
	20	6.25 × 10⁻⁵	−1.08
	30	9.38 × 10⁻⁵	−2.09
	35	1.09 × 10⁻⁴	−2.63