官田隧道岩爆特征与防治措施

岩爆是一种世界性的地质灾害,极大地威胁现场施工人员和设备的安全。目前国内外在岩爆方面做了大量的研究工作,而地应力测试则是进行隧道岩爆及其他灾害预测预报的重要内容。结合官田隧道的施工情况,介绍了该隧道岩爆的产生及其发展特征,并结合地质条件和地应力测试两方面因素探讨了官田隧道岩爆发生的原因,并根据上述原因分析,针对性地提出了官田隧道在后续施工中防治岩爆发生的相关措施。

Characteristics of the Rock Burst in Guantian Tunnel and itsPrevention and Mitigation

Rock burst is a common geological hazard and it might significantly threaten the life of construction workers and safe- ty of the equipment. There are many research works have been conducted worldwide but the limited results are obtained due to the complexity of the rock burst problems. The high geo-stress and its induced geological hazards （such as rock burst） are the commonly encountered problems in the construction. The measurement of the geo-stress is one of the important factors for rock burst and other geological hazards prediction in the tunnel excavation. This paper introduces the initiation as well as the devel- opment of the rock burst in the tunnel excavation. The reasons for the rock burst in Guantian Tunnel are explored from the ge- ological conditions and the geo~stress measurement. Measures that can prevent the rock burst are also proposed.