Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 1999.10a
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- Pages.217-223
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- 1999
An Experimental Study on Performance of neater Stops at Construction joints in Tunnel
터널 시공이음부에서의 방수재 역할에 대한 실험연구
Abstract
Mostly, water leakage took place in construction joints. In case of cable tunnels constructed by open-cut method, waterstops have been used to prevent the water leakage. But, we haven't any experience to install the waterstops in NATM cable tunnels. So, it is necessary to develope the waterstops and test the performance of it in laboratory. We manufactured cable tunnel lining quarter scale model by pouring concrete, and installed the waterstops. After filling the inside of concrete lining about two-third with water, we put the air pressure on the water, In addition, it is also carried out water leakage test for concrete lining model without waterstops. As a result, we confirmed the performance of waterstops and its adaptability. It is also tested that the performance of rubber gaskets used in concrete segments of Shield tunnelling. In addition, we determined the allowable infiltration rate for cable tunnel with non-drainage system.