Risk Identification and Assessment during the Excavation of the Deep Foundation Pit

Table 4

Centrality and causality.

Indexes	U11	U12	U21	…	U45	U51	U52
	0.916	1.148	1.047	…	0.925	1.172	1.237
	0.686	0.476	0.476	…	0.665	0.520	0.476
	1.602	1.624	1.524	…	1.589	1.691	1.713
	0.230	0.672	0.571	…	0.260	0.652	0.761