17.3: Appendix C- Dimensionless Pore Pressures p1m and p2m

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**Table C-1: The dimensionless pore pressures.**
	h_b/h_i	k_i/k_max=1			k_i/k_max=0.25
		β =30^o	37.5^o	45^o	30^o	37.5^o	45^o
α =15^o	1 (s)	0.156	0.168	0.177	0.235	0.262	0.286
	2 (s)	0.157	0.168	0.177	0.236	0.262	0.286
	3 (s)	0.158	0.168	0.177	0.237	0.262	0.286
	1 (b)	0.031	0.033	0.035	0.054	0.059	0.063
	2 (b)	0.016	0.017	0.018	0.028	0.030	0.032
	3 (b)	0.011	0.011	0.012	0.019	0.020	0.021
		β =25^o	30^o	35^o	25^o	30^o	35^o
α =30^o	1 (s)	0.178	0.186	0.193	0.274	0.291	0.308
	2 (s)	0.179	0.187	0.193	0.276	0.294	0.310
	3 (s)	0.179	0.187	0.193	0.277	0.294	0.310
	1 (b)	0.073	0.076	0.078	0.126	0.133	0.139
	2 (b)	0.049	0.049	0.049	0.084	0.085	0.086
	3 (b)	0.034	0.034	0.033	0.059	0.059	0.059
		β =20^o	25^o	30^o	20^o	25^o	30^o
α =45^o	1 (s)	0.185	0.193	0.200	0.289	0.306	0.325
	2 (s)	0.190	0.198	0.204	0.304	0.322	0.339
	3 (s)	0.192	0.200	0.205	0.308	0.325	0.340
	1 (b)	0.091	0.097	0.104	0.161	0.174	0.187
	2 (b)	0.081	0.082	0.083	0.146	0.148	0.151
	3 (b)	0.067	0.065	0.063	0.120	0.116	0.114
		β =15^o	20^o	25^o	15^o	20^o	25^o
α =60^o	1 (s)	0.182	0.192	0.200	0.278	0.303	0.324
	2 (s)	0.195	0.204	0.211	0.314	0.339	0.359
	3 (s)	0.199	0.208	0.214	0.327	0.350	0.368
	1 (b)	0.091	0.103	0.112	0.158	0.184	0.205
	2 (b)	0.100	0.106	0.109	0.182	0.196	0.204
	3 (b)	0.094	0.095	0.093	0.174	0.176	0.174

The dimensionless pore pressures p_1m in the shear zone (s) and p_2m on the blade surface (b) as a function of the blade angle α, de shear angle β, the ratio between the blade height h_b and the layer thickness h_i and the ratio between the permeability of the situ sand k_iand the permeability of the sand cut k_max, with a wear zone behind the edge of the blade of 0.2·h_i.