摘要
文章通过对裸洞隧道病害形成的应力场分析,对病害产生的原因进行了研究;根据裸洞隧道病害的不同形式、病害表现和发展状态将整治防护措施分为五个等级,并给出了相应的示例。通过数值模拟分析并结合实际工程实例,提出了裸洞隧道病害整治最为常用的三种方法,其中通过注浆改善围岩条件是最为有效的方法。现场实测结果与计算较为吻合,显示了裸洞隧道病害整治防护措施的有效性和合理性。
By analyzing the stress field of an unlined tunnel with defects,the causes of them were studied. Five reinforcement and protection grades for unlined tunnel defects are proposed according to the forms, characteristics and development status of the defects with corresponding examples. Based on numerical simulation and relevant engineering examples, authors of the paper present three common measures to repair the unlined tunnel with defects. Numerical simulation indicated that grouting is the best means to improve surrounding rock stability. Results of numerical simulation agreed well with the results of in - situ monitoring to have shown the effectiveness and rationality of the proposed measures.
出处
《现代隧道技术》
EI
北大核心
2007年第2期82-86,共5页
Modern Tunnelling Technology
基金
重庆交通大学青年基金资助项目
关键词
裸洞隧道
病害
整治措施
数值模拟
Unlined tunnels
Defects
Treatment measures
Numerical simulation
