聚丙烯纤维网喷射混凝土性能和衬砌试验  

EXPERIMENT ON BEHAVIOUR OF POLYPROPYLENE-FIBER-NET SHOTCRETE AND LINING

作　　者：朱永全[1] 刘勇[1] 刘志春[1] 边亦海[1] 

机构地区：[1]石家庄铁道学院土木工程分院,石家庄050043

出　　处：《岩石力学与工程学报》2004年第19期3376-3380,共5页Chinese Journal of Rock Mechanics and Engineering

摘　　要：聚丙烯网状纤维喷射混凝土与传统素喷混凝土相比,抗拉、抗弯、抗渗水压力强度分别提高了56.2%,92.9%,100%;增加了密实性和质量稳定性;喷射作业回弹损失量减少10%～20%,粉尘减少1倍以上。在铁路、公路隧道中,已多次成功地将聚丙烯纤维网喷射混凝土用作隧道初期支护和永久衬砌,形成了完善的施工工艺,提高了隧道结构强度和质量。In comparison with the traditional plain shotcrete,the tensile,flexural and permeability strength of polyropylene-fiber-net shotcrete are improved for 56.2%,92.9% and 100%,respectively. The density and quality stability of concrete are improved,the resilience loss is reduced for 10%～20%,and dust is reduced for more than 100% in the spraying. In railway and highway tunnels,polyropylene-fiber-net shotcrete has been used as primary support and permanent lining successfully. A comprehensive construction technology has been formed,and the structural strength and quality have been improved in recent years.

关 键 词：隧道工程 聚丙烯纤维网 喷射混凝土 支护 衬砌 

分 类 号：U455.48[建筑科学—桥梁与隧道工程]