Experimental Study on Damage Breakage Properties of Shaft Lining Concrete under Hydromechanical Coupling

Table 3

Result of three axis test of shaft concrete under hydraulic coupling.

Test number	Osmotic pressure (MPa)	Confining pressure (MPa)	Peak stress (MPa)	Peak strain (ε × 10^−3)	Initial permeability (10^−18·m^2)	Secant elastic modulus (MPa)
1	4	7	121.27	7.59	3.1687	21.29 × 10^3
2	6	7	106.28	5.96	4.2298	23.17 × 10^3
3	6	9	128.05	5.98	2.8185	33.27 × 10^3
4	8	9	124.69	6.80	6.8291	22.42 × 10^3
5	8	11	136.54	6.99	4.4349	27.44 × 10^3
6	10	11	127.63	6.21	6.0933	28.21 × 10^3