17.3: Appendix C- Dimensionless Pore Pressures p1m and p2m
- Page ID
- 35246
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hb/hi |
ki/kmax=1 |
ki/kmax=0.25 |
|||||
β =30o |
37.5o |
45o |
30o |
37.5o |
45o |
||
α =15o |
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 =25o |
30o |
35o |
25o |
30o |
35o |
||
α =30o |
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 =20o |
25o |
30o |
20o |
25o |
30o |
||
α =45o |
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 =15o |
20o |
25o |
15o |
20o |
25o |
||
α =60o |
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 p1m in the shear zone (s) and p2m on the blade surface (b) as a function of the blade angle α, de shear angle β, the ratio between the blade height hb and the layer thickness hi and the ratio between the permeability of the situ sand ki and the permeability of the sand cut kmax, with a wear zone behind the edge of the blade of 0.2·hi.