Study on the Operation Safety Evaluation System of Ship Lock Combined with Variation Coefficient Method and Matter-Element Extension Method

Abstract Ship lock is the most widely used, promising and important type of navigation structure in world at present. It extremely necessary to evaluate operation safety ship service, which has great social economic benefits. The construction evaluation system key step operation. Based on this, this paper systematically studies safety, including indicator system, weighting method model. main work conclusions are as follows: Firstly, a multi-indicator hierarchical five first-class indicators forty-seven second-class for established, four grades normal, deterioration, early warning shutdown divided. Secondly, process model based extension theory put forward. Finally, result shows that grade belongs first – normal state, it consistent with actual situation, indicating reliable. At same time, can also be applied other fields such dam health evaluation, aging rock mass quality provides basis evaluation.