Experimental study and treatment measure of track-uplift disease caused by water pressure in high-speed railway tunnel

被引：0
|
作者：
Li L. [1 ]
Yang J. [1 ]
Wang S. [1 ]
Wu J. [2 ]
Wang Z. [1 ]
Xiang M. [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
[2] China Railway Southwest Research Institute Co. Ltd., Chengdu
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Disease treatment; High-speed railway tunnel; Model test; Track-uplift; Water pressure;
D O I：
10.11817/j.issn.1672-7207.2022.04.019
中图分类号：
学科分类号：
摘要：
The track-uplift disease caused by water pressure occurs in high-speed railway tunnels frequently, which seriously affects the traffic of the railway line. The cases of track-uplift disease in recent years were summarized, and the disease characteristics, geological conditions and rainfall factors were statistically analyzed. Based on the typical case, a fine high-speed railway tunnel model was constructed by 3D printing technology, and the model test for simulating track-uplift disease was carried out, the characteristics of tunnel discharge, external water pressure and structural displacement were studied. Based on the disease characteristics, the principle and measure of different disposal stages were put forward. According to a typical case, the implementation process and effect evaluation were introduced, and the effectiveness of the countermeasure was verified. The results show that the high water pressure at the tunnel bottom, which is difficult to be eliminated in the existing drainage system, is the main cause of the disease, and the drains clogging problem during operation will further aggravate the degree of the disease, both of which need to be paid attention to. The research results can provide reference for the design and treatment of similar diseases. ©2022, Central South University Press. All right reserved.
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页码：1341 / 1351
页数：10
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