Regional Stability Analysis of Red Clay Slope Based on Different Failure Modes: A Case Study in Taizaifu Area, Fukuoka

Table 4

Physical and mechanical indexes of red clay and bedrock.

Item	c (kPa)	c′ (kPa)	φ (°)	φ′ (°)	φ^b (°)	hf (m)	γ (kN/m^−3)	γsat (kN/m^−3)
Upper red clay	36.7	15.8	15.4	11.7	8.4	0.63	19.1	20.8
Lower red clay	24.1	11.6	14.8	9.6	8.2	0.42	18.5	20.3
Bedrock	5000	—	40	—	—	—	20	—