Abstract
Subway engineering is a long range program. Metro structure waterproof is a major technology to ensure the durability of structure. With the experience accumulation and technical maturity of our country's subway construction, waterproof technology is developing fast. The design concept and material of underground waterproof stay updated. According to the Shenyang subway metro construction experience, this article do a research on the on the cold regions based on the geological conditions and climate characteristics. Focusing on the subarea waterproof and natural sodium bentonite soil waterproof blanket are described, this article make a detail analysis on the proof about the design concept, waterproofing system, material selection, construction technology and other aspects. The content of this article has been in the works in practical application, which can provides reference for other similar project .
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