富水围岩山岭隧道防排水技术研究

Study on Waterproofing and Drainage Technology of Tunnel of Water-rich Rock Circumstance

以某隧道工程为依托,基于毗邻水库及F3断裂破碎带与隧道的相互影响,根据国内外隧道防排水技术资料,总结出富水情况下适合山岭隧道施工的防排水方案。文中根据该隧道水库段地质条件,综合红外探水与地质雷达所得数据,判断掌子面前方围岩情况。选取其中某期数据为参照,当数据结果显示前方含水时,用钻探法测出水量,并根据水量大小提出针对性防排水设计及注浆方案。实践证明,探水结果可靠,针对性防排水方案可行。

According to a tunnel project,which traverses the Longtanfeng Reservoir,the waterproof and drainage scheme of mountain tunnel construction in water-rich conditions is summed up based on the domestic and foreign data of tunnel waterproof and drainage technology.The mutual influence between a reservoir nearby and F3 fracture zone and tunnel is taken into consideration.Again according to the geological condition of reservoir section of this tunnel,and combining with data from infrared water and geological radar,the situation of surrounding rock in front of the tunnel face can be judged.Selecting one period of data as reference,when the data shows that there is water ahead,the drilling method can be used to measure the water volume,and the suggestion for targeted drainage design and grouting plan can be put forward according to amount of the water.The practice has proved that the results of water exploration are reliable,and the specific anti drainage scheme is feasible.