ABSTRACT
Using underground rock salt cavity for storing oil
and natural gas has been widely recognized at home
and abroad. More recently, much work has been car-
ried out on the theoretical research and practical ap-
plication of utilizing rock salt cavity for strategic re-
serves of energy in China (Yang et al. 2005). Due to
the randomness, uncertainty and ambiguity of the
risk factors, the rock salt cavity damage, gas storage
leakage and surface subsidence have happened fre-
quently. People's lives, national property and social
environment have also been seriously threatened be-
cause of the gas explosion, fires and other disasters
during the operation of gas storage. So, it is very
important to carry out the risk assessments for the
underground rock salt cavity. However, at present,
the research achievements on risk analysis of gas
storage in rock salt are rare. With the statistics data
by expert investigation, Fuzzy Comprehensive Eval-
uation (FCE) is applied to analyze the influence lev-
el of risk factors, which will provide an effective
guidance for the operation safety management of gas
storage in rock salt.
