双碳背景下地下工程永临结构一体化技术实践

永临结构一体化就是在设计施工过程中，将临时降止水结构和临时支护结构同永久结构结合起来一体化设计和一体化施工，以最大程度地发挥临时结构的作用，或者最大程度地减少临时结构的浪费。作者首次提出了地下工程永临结构一体化的建造理念，并结合作者近年来所做的科研工作，系统梳理了国内在永临结构一体化方面所做的科学尝试和技术实践，提出在双碳背景下应该大力倡导地下工程永临结构一体化，以减少材料浪费，降低对周边环境的影响，加快施工速度。

TECHNICAL PRACTICE OF PERMANENT AND TEMPORARY STRUC-TURAL INTEGRATION IN UNDERGROUND ENGINEERING UNDER THE CARBON PEAKING AND CARBON NEUTRALITY BACKGROUND

In the process of design and construction, integration of permanent and temporary structures means to combine the water sealing and dropping structure、the temporary support structure with the permanent structure. It can maximize the role of the temporary structure, or minimize the waste of temporary structures. For the first time, the author puts forward the permanent and temporary combination of the underground project. Combined with the scientific research work in recent years, the author systematically sorts out the scientific attempts and technical practices in this field in China. Under the Carbon peaking and Carbon neutrality background, the author put forward that we should vigorously advocate permanent and temporary combination of the underground project, aiming to reduce the waste of materials, the impact on the surrounding environment, and speed up the construction.