长大深埋山岭隧道岩爆地段关键施工技术

Key Construction Techniques for Rock Burst Sections of Deep Large Mountain Tunnels

岩爆研究成果丰富,但仍然是一个世界性难题。文章结合向莆铁路高盖山隧道、金瓜山隧道施工岩爆工程实例,采用国内外常用的岩爆判据和岩爆分级方法,研究分析了实例工程岩爆特征、岩爆等级、影响因素,以及岩爆预测预报方法,提出了岩爆防治措施,包括应力解除钻孔、注水湿化和锚固等方法;同时,在综合已有资料的基础上对岩爆判据、分级及防治等方面提出了意见和建议,强调岩爆判别应采用多因素综合判别准则。

Although there have been abundant research achievements regarding rock bursts in the Guanshanling tun- nel, this phenomenon is still a worldwide problem. Based on the cases of the Gaogaishan tunnel and the Jinguashan tunnel on the Xiangtang-Putian railway, the features, classification, influential factors, and prediction of rock bursts in tunnel engineering were analyzed by means of the criteria for and classification of rock bursts in foreign countries. This paper presents preventive measures, including the drilling of holes for stress release, water injection, and an- choring. Meanwhile, it discusses opinions and suggestions concerning the criterion, classification, and prevention of rock bursts and emphasizes the importance of comprehensive criteria for studying rock bursts.