20世纪70年代中期，意大利的Pietro Lunardi教授开始研究并逐步创立了岩土控制变形分析法（ADECO-RS法），该方法用中文解释为“新意法”。介绍新意法的理论基础、新意法隧道设计施工的基本步骤以及新意法与新奥法的不同之处，为新意法在我国的推广应用提供参考。

From the mid of 1970s, an Italian professor named Pietro Lunardi started to study on the design and construction of tunnels using the approach based on the analysis of controlled deformation in rocks and soils (ADECORS approach in short) and gradually established a system of design and construction of tunnels by means of ADECORS approach, which in Chinese is called New Italian Tunneling Method (NITM in short). The theoretical basis of ADECORS approach, the procedures of the design and construction of tunnels by means of ADECORS approach and the differences between ADECORS approach and NATM are presented, which can provide reference for the application of ADECORS approach in China.