运营公路隧道地下水作用机理及处治技术研究

针对地下水对隧道的影响,分析了降雨、河流水位变化、周围水库修建等引起地下水位变动对隧道围岩和衬砌的影响机理和影响特征,阐述了渗水处理材料的特征和适用范围,并根据渗水类型和位置分析胶泥堵水、注浆止水以及引流防渗三种处理方法的施工工艺.以某隧道工程裂缝渗漏为例,对侧墙裂缝渗水现象采用开凿沟槽,胶泥止水方式进行处理,有效控制了地下水对隧道的围岩、衬砌的破坏和对行车安全的影响.

Researches on Function Mechanism and Treatment Techniques of Underground Water of Operating Highway Tunnel

Directing at influences of underground water to the highway mechanism and characteristics caused by rainfall, the river water level changes tunnel, we analyze the influence and the construction of reservoirs which may cause changes to groundwater level. We also describe the characteristics and scope of seepage material. According to the seepage type and position analysis, we also analyze the three methods of construction technology, that is, Clay plugging, water - stop grouting, drainage, seepage control. Taking a tunnel of leakage and crack as example, we use the methods of digging trenches and water - stop by clay which effectively control the groundwater to the surrounding rock and lining of the tunnel and ensure the safety of driving.