基于山岭隧道高性能喷射混凝土应用研究进展  

Research Progress in Application of High-performance Shotcrete Based on Mountain Tunnel

作　　者：孙雅珍[1] 何放 王金昌[3] 王龙岩 谭长根 SUN Ya-zhen;HE Fang;WANG Jin-chang;WANG Long-yan;TAN Chang-gen(School of Transportation and Geomatics Engineering,Shenyang Jianzhu University,Shenyang 110168,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Institute of Transportation Engineering,Zhejiang University,Hangzhou 310058,China;Zhejiang Jiaogongluqiao Construction Co.,Ltd.,Hangzhou 310051,China)

机构地区：[1]沈阳建筑大学交通与测绘工程学院,沈阳110168 [2]沈阳建筑大学土木工程学院,沈阳110168 [3]浙江大学交通工程研究所,杭州310058 [4]浙江交工路桥建设有限公司,杭州310051

出　　处：《科学技术与工程》2023年第33期14071-14080,共10页Science Technology and Engineering

基　　金：浙江交工协同创新联合研究中心项目(ZDJG2021004)。

摘　　要：喷射混凝土因其高效、低成本和高质量,广泛应用于山岭隧道工程中。目前喷射混凝土强度低、回弹率高且对运营期隧道耐久性影响差,已成为亟待解决的问题。针对目前喷射混凝土存在的一系列问题,对高性能喷射混凝土在山岭隧道工程中应用取得的重大进展进行综述。以喷射混凝土在山岭隧道工程应用为背景,首先,从掺液体速凝剂、优化材料组分及掺纤维增强材料3个方面系统阐述提高隧道喷射混凝土力学性能实现途径;其次,从抗渗性能、抗冻性能、抗碳化性能以及硫酸盐侵蚀性能4个方面系统阐述改善隧道喷射混凝土结构耐久性保障技术;最后,结合当前喷射混凝土在山岭隧道建设中存在的问题和发展需要,指出山岭隧道工程喷射混凝土结构应用技术的发展方向。Shotcrete is widely employed in mountain tunnel engineering due to its efficiency,cost-effectiveness,and high-quality attributes.At present,the low strength,high rebound rate,and poor impact on the durability of tunnels during operation of sprayed concrete have become urgent problems to be solved.Aiming at a series of problems currently existing in sprayed concrete,the significant progress made in the application of high-performance sprayed concrete in mountain tunnel engineering was summarized.Building upon the backdrop of shotcrete application in mountain tunnel engineering,firstly,the ways to improve the mechanical properties of tunnel shotcrete were systematically expounded from three aspects:mixing liquid accelerator,optimizing material composition and mixing fiber reinforced materials.Secondly,the technology of improving the durability of tunnel shotcrete structure was systematically expounded from four aspects:impermeability,frost resistance,carbonation resistance and sulfate attack performance.Finally,combined with the current problems and development needs of shotcrete in mountain tunnel construction,the development direction of shotcrete structure application technology in mountain tunnel engineering was pointed out.

关 键 词：喷射混凝土 山岭隧道 力学性能 耐久性能 

分 类 号：TU528.53[建筑科学—建筑技术科学]