摘要
Abstract
As for Huangjin Tunnel on Ganzhou-Shaoguan Railway, because of its unique geographical position and the complex geological condition, as well as because of the adverse situations such as eccentric pressure, water-rich and karst development, the construction for it was difficult. Aiming at the collapse and cave-in of the tunnel with a burial depth of 70 meters, the treatment measures were determined after engineering analogy, structure calculation and economic comparison. Afterwards the relevant supporting measures were employed, such as consolidating the collapse body and cave-in body and its adjacent area by surrounding rock grouting, advance shed-pipe grouting, advance small duct grouting, double-deck primary supporting, annular excavation with preserved core soil and so on. And the ground surface subsidence was also treated. By using above treatment measures and in combination with geological forecast and monitoring methods, the collapse and cave-in areas have successfully been passed through.关键词
铁路隧道/深埋隧道/塌方冒顶/结构计算/双层支护Key words
railway tunnel/ deeply buried tunnel/ collapse and cave-in/ structure calculation/ double-deck supporting分类
交通工程
