Research Article
Identification and Assessment of Subway Construction Risk: An Integration of AHP and Experts Grading Method
Table 15
Rock and soil construction classification and bearing capacity characteristic value table.
| Name of rock and soil layer | Geotechnical construction engineering is classified | The characteristic value of bearing capacity (fak/fa) (kPa) |
| No. ① plain fill | II | — | No. ①1 miscellaneous fill | II | — | No. ② coarse sand | I | 150 | No. medium coarse sand with silt | I | 60 | No. ⑦ silty clay | II | 180 | No. ⑦1 silty clay with organic matter | II | 120 | No. ⑦2 coarse sand | I | 220 | No. ⑫ cohesive soil coarse gravel sand | II | 300 | No. ⑫1 layer silty clay | II | 250 | No. ⑯up superweathered subzone of strato, coarsely grained granite | IV | 1000 | No. ⑯down strong weathering lower subzone of coarse-grained granite | IV | 1500 | No. ⑯3 strongly weathered granite porphyry | IV | 1000 | No. ⑯5 sandy cataclastic rock | IV | 600 | No. ⑰ moderately weathered coarse-grained granite | V | 2000 | No. ⑰3 moderately weathered granite porphyry | V | 2000 | No. ⑰5 layered massive cataclasite | V | 1800 | No. ⑱ slightly weathered coarse-grained granite | VI | 5000 | No. ⑱3 slightly weathered granite porphyry | VI | 5500 |
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