The security of engineering construction has an intense relationship with the reliability of railway construction. Simultaneously it plays an important regulatory role on the entire railway engineering feasibility as well as economical efficiency and largely restricts railway construction investment and the benefits of its appliance. 其工程建设的安全关系着铁路工程建设的可靠性,会对整个铁路工程的可行性及经济性等起着非常重要的制约作用,很大程度上制约着铁路工程建设投资及使用效益。