遵照毛主席关于“要认真总结经验”的教导,有关铁路的工程、设计、科研等部门于1971年年底在贵阳召开了铁路路基新型支挡建筑物经验交流及协作会议。会议交流了锚杆挡墙、锚固桩、托盘式挡墙、框架式挡墙、重力式加凸榫挡墙、挡墙设计理论的探讨等设计施工科学实验方面的经验。 Following Chairman Mao’s teachings on “serious lessons learned”, relevant engineering, design and research departments of the railway held a new exchange of experience and coordination meetings for new railway subgrade retaining structures in Guiyang at the end of 1971. The meeting exchanged the experience of design and construction of scientific experiments such as the design of anchor retaining wall, anchor pile, tray retaining wall, frame retaining wall, gravity plus tenon retaining wall and retaining wall design theory.