隧道全断面排水系统水-力耦合分析

Coupled hydro-mechanical analysis of the tunnel full profile drainage system

为解决目前隧道在长期运营上面临的地下水渗漏和底板突水等问题,提出基于复合排水管的隧道全断面排水系统,该系统采用复合排水管作为排水通道。为研究该复合排水管的性能,首先,建立水-力耦合数值分析模型,对比分析隧道是否设置全断面排水系统对隧道衬砌承载性能的影响;其次,开展参数分析,采用单变量控制方法,深入分析隧道全断面排水系统排水对衬砌结构承载性能的影响。研究成果可为隧道全断面排水系统的工程应用提供理论依据。

In order to solve problems of groundwater leakage and water inrush into the bottom plate of the tunnel during longterm operation,a tunnel with full profile drainage system based on composite drainage pipes was proposed.In order to research this system property,firstly,a coupled hydro-mechanical numerical analyses compared with no drainage system was carried out.And then,for validation of the impact of full profile drainage system on the tunnel bearing performance;univariate control method was taken to analyze the factors such as the water head height,the ground height and the permeability of the surrounding rock.The research results can provide theoretical basis for the engineering application of composite pipe drainage system.