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岩爆预测预报是世界性难题,需要掌握准确地质情况,准确判定还需要一段时间的持续监测,并根据施工进度进行判断。本文以云南怒江州贡山县独龙江公路改建工程高黎贡山隧道为工程背景,应用声发射技术对该隧道进行高地应力区的岩爆进行监测预报;试验研究结果表明,根据围岩破碎程度、岩体含水情况、开挖速度和声发射大事件数及振铃计数,能够对隧道的掉块、偏帮、锚定以及岩爆等级进行初步判定。
Rockburst forecasting is a worldwide problem. It needs to know the exact geological conditions, accurately determine the need for continuous monitoring over a period of time, and make judgments based on the construction schedule. In this paper, the Gaoligongshan tunnel of Dulongjiang Highway Reconstruction Project in Gongshan County, Gongshan County, Yunnan Province is taken as the engineering background. The acoustic emission technique is used to monitor and forecast the rockburst of the tunnel in the high stress area. The experimental results show that according to the degree of rock fragmentation, Water content of rock mass, excavation speed, number of acoustic emission events and ring counting can be used to make initial judgment on the dropping, partial support, anchoring and rock burst of the tunnel.