液态二氧化碳相变致裂技术在建全抽水蓄能电站中的应用

Application of Liquid Carbon Dioxide Phase Change Fracturing Technology in the Construction of Jianquan Pumped Storage Project

随着碳达峰和碳中和目标的实施,抽水蓄能电站建设迎来了高速发展新机遇[1]。重庆云阳建全抽水蓄能电站在项目核准后无筹建期,三通一平等前期工程与主体工程同步实施。该工程的15号道路作为连接进场公路和下水库右坝顶唯一的一条交通要道急需快速打通,部分路段的石方边坡需要开挖以满足设计要求。以该工程为依托,阐述了在建全抽水蓄能电站道路工程未完成爆破审批且周边环境复杂条件下,采用二氧化碳相变致裂技术取得的工程进度可控,安全可靠,社会效益显著的过程。

With the implementation of carbon peak and carbon neutrality goals,the construction of pumped storage projects has ushered in new development opportunities[1].Construction of the major project will begin immediately after the program is approved.There is no preparation period for the construction of Yunyang Jianquan Pumped Storage Project.Preliminary projects such as water,electricity,roads and site leveling were implemented simultaneously with the main project.Road No.15 is the only traffic artery connecting the approach road and the right dam top of the lower reservoir and needs to be opened quickly.The stone slopes of some sections need to be excavated to meet the design requirements.Based on this project,the process of using carbon dioxide phase change fracturing technology to achieve controllable engineering progress,safety and reliability,and significant social benefits under the conditions of the construction of the pumped storage project road project without blasting approval and complex surrounding environment is described in this paper.