@article{ref1,
title="Study on catastrophe instability criterion of surrounding rock in tunnels blasting crossing water-rich fault zones",
journal="China safety science journal (CSSJ)",
year="2022",
author="Peng, Y. and Liu, G. and Huang, Z. and Lyu, H. and Wu, L.",
volume="32",
number="5",
pages="104-111",
abstract="In order to solve instability problems of tunnels blasting through rich water fault zones, based on instability mechanical model of tunnel-fault system under blasting, a cusp catastrophic model was established considering the combined effects of blasting and groundwater. Instability mechanism of surrounding rock under tunnel-fault system was revealed, and its instability criterion was developed. Then, with resource allocation project of Pingtan and Minjiangkou in Fujian as an example, rock stability of tunnels crossing water-rich fault zones was evaluated. The results show that the instability of surrounding rock is a result of internal and external factors. Due to long-term water-rock interaction and cumulative blasting, mechanical properties of surrounding rock in water-rich fault zones are constantly weakened, and catastrophe criterion, k value, is constantly reduced, which probably leads to instability and failure of the rock. The results of instability risk evaluation based on the criterion are consistent with field conditions. © PHYSOR 2022 China Safety Science Journal. All rights reserved.<p /><p>Language: zh</p>",
language="zh",
issn="1003-3033",
doi="10.16265/j.cnki.issn1003-3033.2022.05.0887",
url="http://dx.doi.org/10.16265/j.cnki.issn1003-3033.2022.05.0887"
}