Advances in Civil Engineering / 2020 / Article / Tab 1 / Research Article
Design of Groundwater Extraction in Open Cut Foundation Pit and Simplified Calculation of Ground Subsidence due to Dewatering in Sandy Pebble Soil Strata Table 1 Soil properties and its distribution.
Sequence of strata Name of stratum Thickness of stratum (m) Average thickness of stratum (m) Soil permeability coefficient (cm·s−1 ) Compression modulus (×104 kPa) ① Miscellaneous fill 0.8∼1.6 1.18 1.45 × 10−3 2.8 ② Silty clay 0.5∼2.3 1.17 5.79 × 10−5 5.8 ③ Clayey silt 0.5∼1.2 0.73 1.74 × 10−4 5.75 ④ Fine sand 0.6∼3.6 1.31 3.47 × 10−3 5 ⑤ Medium sand 0.3∼1.5 0.69 1.16 × 10−2 5.5 ⑥ Loose pebble layer 1∼1.6 1.3 2.55 × 10−2 20 ⑦ Slightly dense pebble layer 1∼7.4 4.62 2.55 × 10−2 23 ⑧ Medium dense pebble layer 1∼21.4 12.33 2.55 × 10−2 32 ⑨ Compacted pebble layer Not drilled Not drilled 2.55 × 10−2 43
