Research on the risk evaluation system of municipal engineering trenchless construction based on fuzzy ontology

In view of the current shortcomings of the risk evaluation of municipal engineering trenchless construction, it puts forward to use fuzzy ontology to improve the comprehensible and sharing. After building the risk evaluation system of municipal engineering trenchless construction, this paper discusses how to achieve the system, including creating fuzzy domain ontology, constructing fuzzy evaluation rules, establishing the fuzzy ontology reasoning rules, the renewing and improving of knowledge base.