高水压富水山岭隧道不同排水率的分析研究

以某富水区山岭隧道为工程背景,通过建立有限元地层结构模型,对隧道结构在高水压力作用下的力学行为进行模拟分析,得出排水率对衬砌外侧水压力分布规律以及衬砌结构受力情况变化规律的影响。研究结果表明:通过改变排水率可以有效降低衬砌外侧水压力,但过低的降低排水率,衬砌外侧水压力降低效果不明显。

Study on the Different Rates of Drainage of Mountain Tunnels in High Water Pressure and Water-enriched Region

This paper,based on the engineering practices of mountain tunnels in high water pressure and water-enriched region,simulates and analyzes the mechanical behavior of the tunnel structure in high water pressure and water-enriched region by establishing a finite structural model with soil layers. The effects of the rate of drainage on the external water pressure on lining and on the stress of lining structure are identified. The study results show that adjusting the rate of the drainage can effectively reduce the external water pressure on lining,but the rate of the drainage too low reduces the external water pressure on lining less obviously.