HSE Risk Assessment of Major Sewage Transport Tunnel Projects

In the past 30 years, urbanization in developing countries, especially China, has progressed rapidly, resulting in increased difficulties in urban sewage treatment and environmental pollution problems [1]. Moreover, the capacity for sustainable development has been severely restricted. To solve these problems, major cities in developing countries are initiatively building major sewage transport tunnels under the core areas of the cities [2]. At present, a large number of major sewage transport tunnel projects (MSTTPs) are being built in China, and the total investment has exceeded 15 billion RMB [3].