Study And Treatment Of Water Disaster In Mountain Highway Tunnel

With the development of economy and society, we have built an increasing demand of mountain tunnels for further improving the domestic highway network. Because the distribution of karst region is widespread in China, many mountain tunnels cross from the karst rich water area. Water disaster happened in most tunnels during the construction and operation. At present, tunnel leakage has been one of the top ten road diseases. Leakage-resistance and disposal has been a key problem in the tunnel construction.Mountain tunnel's leakage-resistance and disposal technology is a marginal science which combines architectural technology and chemical technology. There are many problems waiting for researching and discussing. Besides the instance of construction practice, there are many theory problems need to be solved, especially we lack of the real results about the leakage-resistance and disposal technology at present. And in all, mountain tunnel's leakage-resistance and disposal is not a mature technology for designing and construction. Mountain tunnel's leakage-resistance and disposal constructions which have been finished all based on the present criterion and use the foreign mature technologies. It needs more systemic and all-round reaching.This paper is with the backing of Free Road of Zhongxing Tunnel Project, based on the rule of ground water and theory of hydraulics seepage. It researches on the seepage principle of water pressure in the rear of lining and water seepage principle in cranny bedrock. It combines the investigation of tunnel anti seepage construction and percolating water circumstances, concludes the percolating water feature of mountainous tunnel, analyses the reason of water leakage. On the basis of development tendency of treatment technology of the tunnel's leakage-resistance and disposal at home and abroad, the author probes into the design and construction technique of tunnel anti seepage, brings up some treatment advices of tunnel's leakage water, makes some useful conclusion based on practical construction.