Abstract
Oil and gas pipeline projects are mega-projects which are closely related to the national economy and the livelihood of people. They have high standards and strict requirements assuring safety and reliability. At present, China’s total length of pipelines reaches up to 60,000 km, and the number keeps increasing quickly. Pipelines pass through different topographic and geological tectonic units, where they meet different kinds of geologic hazards. This paper discusses engineering problems connected with China’s oil and gas pipelines as well as the geo-environment conditions and geo-hazard characteristics of the Sichuan-Shandong Gas-Pipeline Project (Hubei section).Solutions are offered using the comprehensive evaluation method of fuzzy mathematics and probabilistic analysis method. Geological hazard risk assessment is carried out and geological hazard grade and subarea are classified. In addition, the relevant protective countermeasures to geological hazards are suggested.. Risk management and control strategies for geological hazard prevention during operation of oil and gas pipeline projects are discussed which provide a scientific basis of pipeline distribution, strike adjustment and control in geological hazard area.
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