铣挖法隧道开挖步序路径及其对围岩扰动响应分析
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摘要
以大连滨海大道同香山庄段隧道工程条件和施工工艺为背景,使用FLAC3D对5种不同铣挖步序路径进行了数值模拟,得到了隧道竖直方向、水平方向的铣挖掘进随动变形数据成果.结果分析表明:环形步序路径对围岩扰动最大,竖直向下步序路径受力最不均衡,中间开槽步序路径受力最佳,水平循环步序路径较为适用.
Based on the engineering conditions and construction technology of the tunnel in the same fragrant Villa section of Dalian Binhai Road,FLAC3 DIS useD to simulate the 5 different milling steps and obtain the results of the deformation data of milling in the vertical direction and horizontal direction of the tunnel. The results show that the circular sequence path has the greatest disturbance to the surrounding rock,the vertical downward step path is the most unbalanced,the middle slotted step path is the best,and the horizontal cyclic step-order path is more suitable.
Based on the engineering conditions and construction technology of the tunnel in the same fragrant Villa section of Dalian Binhai Road,FLAC3 DIS useD to simulate the 5 different milling steps and obtain the results of the deformation data of milling in the vertical direction and horizontal direction of the tunnel. The results show that the circular sequence path has the greatest disturbance to the surrounding rock,the vertical downward step path is the most unbalanced,the middle slotted step path is the best,and the horizontal cyclic step-order path is more suitable.
引文
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[2]雷向峰.隧道铣挖法施工试验研究[J].隧道建设,2007(3):10-12,46.
[3]董辉,侯俊敏,陈家博,等.堤下隧道开挖施工瞬态卸荷分析[J].水电能源科学,2011,29(9):119-122.
[4]孙伟刚,王成武,陈建.两水隧道软岩铣挖法施工技术[J].现代隧道技术,2011,48(2):170-173.
[5]关则廉.悬臂式掘进机在地铁工程暗挖隧道施工中的应用[J].现代隧道技术,2009,46(5):73-75,81.
[6]漆泰岳,李斌.悬臂掘进机在复杂断面地铁隧道中的应用研究[J].现代隧道技术,2011,48(4):32-38.
[7]惠舒清.隧道铣挖法施工[M].北京:中国铁道出版社,2015.
[8]邹维国.隧道铣挖施工铣挖轨迹及其力学效应分析[J].建设科技,2015,(23):100-102.
[9]李昌宁,雷向峰.隧道铣挖法施工技术[J].隧道建设,2012,32(z1):32-35.
[10]李永.铣挖法在软岩隧道施工中的应用[J].建筑机械,2014(8):33-35.
[11]SU HANG,NING SHURONG,GAO JUN. Application of Approximate Iterative Method on Section Precision Forming of Boom-type Roadheader[J]. The Open Automation and Control Systems Journal,2015,7:1421-1428.
[12]MINMING T,DONGLIANG K,PENG L. Research on Automatic Section Cutting Control of Roadheader[C].In:International Confer-ence on Measuring Technology and Mechatronics Automation,Changsha,China,2010:22-25.