Abstract In order to determine the key parameters of optimal section dimension, channel material, material of ero? sion-resistant coating and insulation layer and etc., the performance indexes of anti-fatigue, fire-resistance, insulation and erosion-resistance were proposed based on the theoretical research and engineering application of the embedded channel for the shield tunnel segment of Lanzhou metro, and the key techniques of section dimension of the segment embedded channel, main channel body and erosion-resistance coating were studied. The results show that it is optimal to have the embedded channel with the section dimensions of 30 mm×20 mm both in terms of mechanical behavior and cost; it is scientific and reasonable regarding the parameters of material for main channel body and erosion resistance of the embedded channel for the segment of shield tunnel of Lanzhou metro; this research provides a foundation of establishing relative national standards and technical basis for the design, production and installation of embedded channel of similar projects.
Abstract：
In order to determine the key parameters of optimal section dimension, channel material, material of ero? sion-resistant coating and insulation layer and etc., the performance indexes of anti-fatigue, fire-resistance, insulation and erosion-resistance were proposed based on the theoretical research and engineering application of the embedded channel for the shield tunnel segment of Lanzhou metro, and the key techniques of section dimension of the segment embedded channel, main channel body and erosion-resistance coating were studied. The results show that it is optimal to have the embedded channel with the section dimensions of 30 mm×20 mm both in terms of mechanical behavior and cost; it is scientific and reasonable regarding the parameters of material for main channel body and erosion resistance of the embedded channel for the segment of shield tunnel of Lanzhou metro; this research provides a foundation of establishing relative national standards and technical basis for the design, production and installation of embedded channel of similar projects.
LI Jihong1 JIN Shihe1 LIANG Qingguo2 YAN Songhong2
.Study on Key Technology of Embedded-channel for the Segment of Shield Tunnels[J] MODERN TUNNELLING TECHNOLOGY, 2019,V56(5): 206-210
2019, Vol. 56 