Study On The Rule Of Water Pressure Upon Lining And Treatment Technique Upon Qiyueshan Karst

The rapid development of communications career at home poses an increasing demand of deep, long mountain tunnels. It's a challenging technical problem to build tunnel in high hydraulic pressure karsts area at home or abroad, particularly under the current stringent environmentally-friendly prerequisite. We should not drain ground water without thinking, but should be updated with 'combined with preventing,cutting,draining and plugging and adaptation to local conditions'. Many mountain tunnels been built and building tells us that various kinds of karst geological disaster caused by high hydraulic pressure is everywhere, poses a great threaten to construction and operation of tunnel. The problem to water pressure upon lining and treatment technique upon karst is inescapable during the phase of design and construction, and has aroused tremendous attention from men of insight worldwide. Systemic research is based on the case project of Qiyueshan karst, take means of theoretical analysis and numerical simulation and field monitoring, study on the rule of water pressure upon lining and treatment technique upon Qiyueshan karst. Major research results are as follows:1. Analysising the basic characteristics of karst according to engineering geological and hydrogeological conditions of Qiyueshan karst.2. Studying the water pressure upon lining by means of theoretical analysis and numerical simulations and field monitoring.3. Studying the classification and treatment principles on karst, and proposing the policy of classification treatment on this basis, and forming a complete system and the corresponding processing mode of scientific and technical programs.