Study On The Project To The Water Leakage In Kunlun Mountain Tunnel

With the national polices'implementation of the western region development and the northeast old industrial base promotion, the large-scale infrastructure will arrive a new peak-period in the next 20 years. So, traffic construction, as the No.1 task of economic development, will be accelerated in the mountainous northeast and northwest region in China. Out of question, more and more long tunnels will be built in these cold regions. But at present, the tunnels built in the cold regions have encountered many kinds of disasters differently. From the damaged styles of the tunnels in cold regions haven appeared now, the damaged styles of these tunnels are mostly the cracks of the linings, the fallen crisply of the linings, the fallen shelly of the linings, the hung ice in the tunnel, the flooding ice of the sidewall, the sprayed water on the line, the accumulated water on the line, the frosted ice on the line, and so on. The damage of the tunnels affects severely the safety of the traveling cranes, threatens to the stabilization of the lining structures, shortens the time that the tunnels are used for, and makes the cost of maintenance for the tunnels increase, So it is not only very important but also urgent to research the technology of preventing the seepage damage and the computational theory for the design of the tunnels in cold regions. And this reseaches would be of not only great value in the academic theory, but also very significant for in engineering practice.At the beginning, according to the essential theories of heat transfer and seepage, considering the coupled effects of the seepage field and the temperature field, the finite element formulae of this problem are obtained by Galerkin's method and Green's formula, And then, the situation of seeping water, the reason of seeping water, the principle of the water-control and the project of the water-control in Kunlun mountain tunnel on Qinghai-Tibet Railway are investigated Finally, using the numerical analysis method, the project of the water-control in Kunlun mountain tunnel on Qinghai-Tibet Railway are analysed., and some significant results are obtained,which can provide the theoretical help and reference for the design, constructing and research of the tunnels in cold regions.