Stress Performance Evaluation of Shield Machine Cutter Head during Cutting Piles under Masonry Structures

Table 1

Parameters of soils.

Numbering	Layer	C (kPa)	φ (°)	μ	γ (kN/m^3)	Thickness (m)
①1	Fill soil	20	20	0.333	18	2.7
②31A	Clay silt	20	22.1	0.296	18.9	2.6
②32	Clay silt	19.9	21.2	0.301	19.4	2.9
②21	Silty clay	29.5	16.4	0.355	19.6	1.0
②33	Clay silt	19	20.4	0.324	19.9	1.5
②22	Silty clay	31.2	15.6	0.375	19.4	3.0
②34	Clay silt	19.3	20.7	0.333	20.2	2.5