Toward a Stakeholder Perspective on Safety Risk Factors of Metro Construction: A Social Network Analysis

Table 4

Identification of safety risk factors.

Code	Name	Reference
R1	Unknown subsurface geological conditions	[10, 30, 31]
R2	Unidentified hydrological conditions	[10, 31, 32]
R3	Unclear pipeline layout	[10, 31]
R4	Lack of detailed exploration information	[31, 32]
R5	Poorly targeted special construction programmes	[10, 30, 31]
R6	Substandard quality of materials	[10, 32]
R7	Design changes	[31, 32]
R8	Lack of planning for the schedule	[10, 31, 32]
R9	Unreasonable sequence of work	[10, 31]
R10	Noncompliance with safety regulations by construction workers	[32]
R11	Untrained construction workers	[30, 31]
R12	Lack of safety precautions	[30, 32]
R13	Lack of contingency plans	[32],
R14	Bad weather conditions	[32]
R15	Undetailed construction programme	[10, 30]
R16	Illegal subcontracting or subcontracting by construction units	[32]
R17	Inadequate skill level of construction personnel	[30, 31]
R18	Workmanship omissions during construction	[10, 31]
R19	Mismanagement by construction managers	[32]
R20	Inadequate foresight of safety incidents	[31, 32]
R21	Irrational design scheme	[10, 32]
R22	Inadequate implementation by supervisory engineers	[10, 32]
R23	Inadequate oversight by government safety management	[10, 30]
R24	Unstable foundations of adjacent buildings	[10, 31]
R25	Construction machinery failure	[30, 31]