HSE Risk Assessment of Major Sewage Transport Tunnel Projects at the Construction Stage Based on the StructuralEntropy Weight Method and the Cloud Model

Table 1

Identification results of HSE risk indicators.

Criteria layer	Preliminary indicator	References
Health	Construction noise	[21]
	Construction dust	[22]
	Humid environment	[23]
	High ambient temperature	[23]
	Irregular lifestyle	[24]
	Toxic and harmful chemicals	[7]
	Whole body vibration	[7]
	Radiation	[25]
Safety	Unreasonable tunneling parameters	[26]
	Excessive deformation	[26]
	Improper use of transportation	[2]
	Wear failure of the shield cutter head	[27]
	Improper power utilization	[28]
	Unqualified shield segments	[29]
	Improper operation of shield segments	[30]
	Random stacking	[2]
	Incorrect protection	[31]
	Failure of bearing seal	[32]
	Failure of hoisting jack	[32]
	Clogging at the exit of slurry	[32]
	Bad grouting effect	[32]
	Improper selection of TBM machine	[33]
	Inadequate fastening of bolt	[34]
	Anchor bolt quality	[34]
	Imprecise installation of launching base	[34]
	Deviation of TBM from target shaft	[34]
	Formation of “mud cake” during excavation	[34]
	Derailment or collision of electric cart	[34]
	Grout pipe blockage	[34]
	Improper grouting amount	[34]
	Improper control of grouting coefficient	[34]
	Leakage of pipe piece joints	[35]
	Shield tail seal leakage	[35]
	Segment seal failure	[36]
Environment	Domestic waste pollution	[37]
	Exhaust pollution	[38]
	Wastewater pollution	[37]
	Sludges and muds pollution	[39]
	Pollution from vehicles	[40]
	Impact on groundwater level	[41]
	Excessive surface subsidence	[42]
	Destruction of the ecological structure	[43]