煤矿安全2019，Vol.50Issue(1)：52-57,6.DOI:10.13347/j.cnki.mkaq.2019.01.013
隧道衬砌开裂机理及加固措施研究
Study on Cracking Mechanism and Reinforcement Measures of Tunnel Lining
韦猛 1袁晨瀚 1蒋勇 1袁晨鑫2
作者信息
- 1. 成都理工大学 地质灾害防治与地质环境保护国家重点实验室,四川 成都 610059
- 2. 东华理工大学流域生态与地理环境监测国家测绘地理信息局重点实验室,江西 南昌 330013
- 折叠
摘要
Abstract
Viscous soil has obvious characteristics such as plasticity, expansion and shrinkage, and it is easy to induce cracking damage of lining. Combined with the specific engineering case, the water content test, brazing test and drilling verification of the tunnel inverted arch inspection section were carried out, and the bearing strength, water content and distribution of the clay soil layer were obtained, and the characteristics of the lining crack characteristics were preliminarily summarized. According to the comprehensive analysis results of monitoring data and numerical simulation, the formation mechanism of cracks was analyzed and the characteristics of cracks were verified. The results show that the correlation between the weak layer at the bottom of the invert arch and the tunnel settlement and the inverted arch crack is very significant; the weak layer at the bottom of the invert is easy to cause uneven settlement of the tunnel; the lateral uneven settlement tends to cause the inverted layer to appear oblique and longitudinal cracks; longitudinal uneven settlement is likely to cause circumferential cracks in the second lining. According to the research results, the reinforcement scheme is proposed in detail, and the grouting type, mode and size, spacing and arrangement of the tempering tube are designed. Field results feedback shows that the reinforcement measures have a good reinforcement effect.关键词
衬砌病害/监测/数值模拟/软弱层/注浆Key words
lining disease/monitoring/numerical simulation/weak layer/grouting分类
矿业与冶金引用本文复制引用
韦猛,袁晨瀚,蒋勇,袁晨鑫..隧道衬砌开裂机理及加固措施研究[J].煤矿安全,2019,50(1):52-57,6.
