The Study Of Waterproofing Techniques In Metro

The problem of metro waterproofing is always a hot topic in civil engineering. The paper discusses different types of metro waterproofing influences in environment and themselves, and analyses the feature of groundwater in present cities from the degree and criterion of waterproofing in metro. It regards that watertight type and combination drainage and waterproofing type is considerable. The metro waterproofing is an integral project, each element of the structure should play important role in waterproofing. It should dig the rock grouting and preliminary bracing' s waterproofing functions sufficiently; It also discusses how to improve self-waterproofing of concrete construction from the view of the cause and control of split. The paper illustrates the reasonable waterproofing operations by excavation method of cut-and-cover and mining in major and detail structure waterproofing. According to the analysis on the above basic problems, the paper suggestes the idea of dynamic and maintainability from composite lining waterproofing. For dynamic waterproofing, it shows the dynamic thought which the change of material and structure should adapt for the underground environment from considering about materials and crafts; For the maintainable waterproofing, the paper attempts to research it from the crafts which contains thorough partition waterproofing, grouting waterproofing by embedded parts and controllable network drainage system. It makes the system of waterproofing about maintainability successfully from the crafts of organic combination. The design, construct and maintenance play a important role in maintainability of waterproofing. The paper considers the design and construction should pay more attention to the entirety, dynamic and maintainability of waterproofing expect for the function of waterproofing. Only this way, the metro waterproofing can keep permanence and credibility.