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Reinforcing Mechanism of Steel Fiber Shotcrete and Its Application to the Treat- ment of Cavern Flock in Tunnel
Author(s): 
Pages: 11-14
Year: Issue:  2
Journal: Geotechnical Investigation & Surveying

Keyword:  喷射钢纤维混凝土 大断面隧道 溶洞群 处治;
Abstract: 利用喷射混凝土中掺入钢纤维能极大地提高混凝土的抗拉弯、抗剪强度和韧性的机理特性,可用来处治隧道溶洞的病害,达到增强围岩结构稳定性的目的。结合具体工程实例,阐述了喷射钢纤维混凝土处理大断面公路隧道小溶洞群病害的施工关键技术,并从技术、安全、经济效果等方面与常规的挂网喷锚加固技术进行对比分析,得出其综合经济效益的显著性,其成功的工程实践应用也证实了该方法的可行性,可应用于其它类似溶洞处理中。
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