Through analysising mechanical characteristic and mechanism of colluvial clay in the Huanxi tunnel portal shallow section,soft surrounding rock tunnel with shallow cover and its latteral pressure reason.
通过对浣溪隧道(双连拱)洞口浅埋段的崩坡积体、软弱围岩体及其偏压情况进行了力学特性、机理分析,从而采取相应控制技术措施,现场实践表明,所采用的技术措施具有明显的效果,可供同类工程参考借鉴。
