双线地铁盾构施工引起的地表沉降分析及施工控制
|
摘要
为了研究双线隧道盾构施工对周围土体的扰动规律及其控制措施,在讨论双孔平行隧道地表沉降计算公式在厦门地铁某区间隧道适用性的基础上,采用双孔平行隧道地表沉降计算公式、数值模拟及现场监测3种方法,揭示双线地铁隧道盾构施工引起的地表沉降分布规律和地表动态变形特性,分析影响地表沉降的施工控制参数的效果。结果表明:(1)双孔平行隧道地表沉降计算公式具有较好的适用性,双线隧道盾构施工完成后,地表形成非对称的"W"形沉降槽;(2)地表沉降本质上是盾构施工引起的土体损失累积造成的,在开挖面到达目标面时,实测地表沉降达到最终沉降值的45%;(3)设置合理的同步注浆、土舱压力和推进速度参数,可以有效控制地表沉降,建议增加同步注浆量作为控制地表沉降的首选措施。
In order to study the disturbance law of the surrounding soil induced by shield construction of twin-tube metro tunnels and it's control measures, the applicability of the ground settlement calculation formula of twin-tube metro tunnels for a certain section of Xiamen subway was discussed. Then, the distribution law of ground settlement induced by shield construction and the features of surface dynamic deformation during the tunnel excavation were presented by using ground settlement calculation formula of twin-tube metro tunnels, numerical simulation and in-situ monitoring. And the effectiveness of construction control parameters that affecting surface settlement was analyzed. The results showed that:(1)The ground settlement calculation formula of twin-tube metro tunnels had a good applicability, and unsymmetrical "W"-shaped settlement trough was formed after the twin-tube subway tunnel shield construction completed;(2)The ground settlement is essentially caused by the accumulation of soil loss, and the observation ground settlement accounts for 45% of the final settlement when the shield excavation face passing the target section;(3)The ground settlement can be controlled effectively by setting reasonable synchronous grouting quantity, soil tank pressure and propulsion speed, it is suggested that increasing the synchronous grouting quantity should be the first choice to control the surface settlement.
In order to study the disturbance law of the surrounding soil induced by shield construction of twin-tube metro tunnels and it's control measures, the applicability of the ground settlement calculation formula of twin-tube metro tunnels for a certain section of Xiamen subway was discussed. Then, the distribution law of ground settlement induced by shield construction and the features of surface dynamic deformation during the tunnel excavation were presented by using ground settlement calculation formula of twin-tube metro tunnels, numerical simulation and in-situ monitoring. And the effectiveness of construction control parameters that affecting surface settlement was analyzed. The results showed that:(1)The ground settlement calculation formula of twin-tube metro tunnels had a good applicability, and unsymmetrical "W"-shaped settlement trough was formed after the twin-tube subway tunnel shield construction completed;(2)The ground settlement is essentially caused by the accumulation of soil loss, and the observation ground settlement accounts for 45% of the final settlement when the shield excavation face passing the target section;(3)The ground settlement can be controlled effectively by setting reasonable synchronous grouting quantity, soil tank pressure and propulsion speed, it is suggested that increasing the synchronous grouting quantity should be the first choice to control the surface settlement.
引文
[1] 魏纲,王霄,姜婉青,等.盾构隧道施工引起建筑物沉降的实用预测方法[J].科技通报,2018,34(6):148-153,158.
[2] 段宝福,宋立坤,周鑫明,等.浅埋暗挖地铁隧道地表沉降研究现状[J].现代隧道技术,2017,54(4):25-32.
[3] Peck R B.Deep Excavations and Tunneling in Soft Ground[C]//State of the art report,Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering,Mexico,1969:225-290.
[4] 刘波,陶龙光,丁城刚,等.地铁双隧道施工诱发地表沉降预测研究与应用[J].中国矿业大学学报,2006,35(3):356-361.
[5] Sagaseta C.Analysis of Undrained Soil Deformation Due to Ground Loss[J].Geotechnique,1987,37(3):301-320.
[6] 方恩权,杨玲芝,李鹏飞.基于Peck公式修正的盾构施工地表沉降预测研究[J].现代隧道技术,2015,52(1):143-149,162.
[7] 沈培良,张海波,殷宗泽.上海地区地铁隧道盾构施工地面沉降分析[J].河海大学学报(自然科学版),2003,31(5):556-559.
[8] 丁智.盾构隧道掘进对邻近建筑物影响及变形预测研究[D].杭州:浙江大学,2014.
[9] 范祚文,张子新.砂卵石地层土压力平衡盾构施工开挖面稳定及邻近建筑物影响模型试验研究[J].岩石力学与工程学报,2013,32(12):2506-2512.
[10] 张杰.软弱富水地层浅埋暗挖隧道地表沉降和支护结构受力的模型试验[J].铁道标准设计,2018,62(3):107-113.
[11] 路林海,孙捷城,周国锋,等.黏性土地层曲线盾构施工地表沉降预测研究[J].铁道工程学报,2018,35(5):99-105.
[12] 韩煊,Standing J R,李宁.隧道施工引起建筑物变形预测的刚度修正法[J].岩土工程学报,2009,31(4):539-545.
[13] 罗勇.数值分析结合自动化监测技术在地铁下穿工程中的应用[J/OL].铁道标准设计:1-7[2018-07-26].https://doi.org/10.13238/j.issn.1004-2954.201805170001
[14] 孙宇坤,关富玲.盾构隧道掘进对砌体结构建筑物沉降的影响[J].中国铁道科学,2012,33(4):38-44.
[15] 何川,李讯,江英超,等.黄土地层盾构隧道施工的掘进试验研究[J].岩石力学与工程学报,2013,32(9):1736-1743.
[16] 罗兵,黄万杰,杨帅.基于BP神经网络的库存动态预测及其应用[J].重庆大学学报,2005,28(2):137-140.
[17] 张治国,张孟喜.软土城区土压平衡盾构上下交叠穿越地铁隧道的变形预测及施工控制[J].岩石力学与工程学报,2013,32(S2):3428-3439.
[18] 付龙龙,李晓龙,周顺华,等.土压平衡盾构机土舱压力的设定方法及原位实测反分析[J].中国铁道科学,2015,36(5):68-74.
[19] 蒙国往,周佳媚,高波,等.地铁盾构掘进引起的软弱地层沉降分析[J].现代隧道技术,2017,54(6):117-125.
[20] 姜德义,任松,刘新荣,等.隧道拱顶下沉时序遗传算法神经网络预测模型[J].地下空间与工程学报,2006,2(4):547-550.
[21] 黄金林,苏相利,王贵杰.盾构法隧道施工的横向沉降槽分析[J].铁道建筑,2008,48(2):34-37.
[22] 雷江松.上下重叠地铁盾构隧道施工对邻近建筑物影响及控制措施研究[J].铁道标准设计,2018,62(7):115-119.
[23] Verrujt A,Booker J R.Surface settlements due to deformation of a tunnel in an elastic half plane[J].Geotechnique,1998,46(4):753-756.
[24] Ylmaz Mahmuto■lu.Evaluation of surface settlement in the Istanbul metro in terms of analytical,numerical and direct measurements[J].Bulletin of Engineering Geology and the Environment,2012,71(3):499-510.
[25] 魏纲,张世民,齐静静,等.盾构隧道施工引起的地面变形计算方法研究[J].岩石力学与工程学报,2006,25(S1):3317-3323.
[26] Sagaseta C.Auhotr's Reply to Sehnlidt[J].Geoteehnique,1988,38(4):647-649.
[27] Loganathan N,Poulos H G.Analytical Prediction for Tunneling induced Ground Movement in Clays[J].Journal of Geoenvironmental Engineering,1998,124(9):846-856.
[28] 邱明明,杨果林,吴镇清,等.双孔平行地铁隧道盾构施工地表沉降分布规律研究[J].现代隧道技术,2017,54(2):96-105.
[29] 魏纲.盾构隧道施工引起的土体损失率取值及分布研究[J].岩土工程学报,2010,32(9):1354-1361.
[30] 施虎,龚国芳,杨华勇,等.基于单神经元的盾构推进速度自适应PID控制[J].中国机械工程,2009,20(2):138-141.
[31] 刘国斌,龚国芳,朱北斗,等.基于BP神经网络的盾构推进速度自适应PID控制[J].工程设计学报,2010,17(6):454-458.
[32] 刘镇,黎杰明,杨旭,等.考虑邻近土洞影响的盾构掘进速度控制[J].工程地质学报,2017,25(6):1633-1639.
[2] 段宝福,宋立坤,周鑫明,等.浅埋暗挖地铁隧道地表沉降研究现状[J].现代隧道技术,2017,54(4):25-32.
[3] Peck R B.Deep Excavations and Tunneling in Soft Ground[C]//State of the art report,Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering,Mexico,1969:225-290.
[4] 刘波,陶龙光,丁城刚,等.地铁双隧道施工诱发地表沉降预测研究与应用[J].中国矿业大学学报,2006,35(3):356-361.
[5] Sagaseta C.Analysis of Undrained Soil Deformation Due to Ground Loss[J].Geotechnique,1987,37(3):301-320.
[6] 方恩权,杨玲芝,李鹏飞.基于Peck公式修正的盾构施工地表沉降预测研究[J].现代隧道技术,2015,52(1):143-149,162.
[7] 沈培良,张海波,殷宗泽.上海地区地铁隧道盾构施工地面沉降分析[J].河海大学学报(自然科学版),2003,31(5):556-559.
[8] 丁智.盾构隧道掘进对邻近建筑物影响及变形预测研究[D].杭州:浙江大学,2014.
[9] 范祚文,张子新.砂卵石地层土压力平衡盾构施工开挖面稳定及邻近建筑物影响模型试验研究[J].岩石力学与工程学报,2013,32(12):2506-2512.
[10] 张杰.软弱富水地层浅埋暗挖隧道地表沉降和支护结构受力的模型试验[J].铁道标准设计,2018,62(3):107-113.
[11] 路林海,孙捷城,周国锋,等.黏性土地层曲线盾构施工地表沉降预测研究[J].铁道工程学报,2018,35(5):99-105.
[12] 韩煊,Standing J R,李宁.隧道施工引起建筑物变形预测的刚度修正法[J].岩土工程学报,2009,31(4):539-545.
[13] 罗勇.数值分析结合自动化监测技术在地铁下穿工程中的应用[J/OL].铁道标准设计:1-7[2018-07-26].https://doi.org/10.13238/j.issn.1004-2954.201805170001
[14] 孙宇坤,关富玲.盾构隧道掘进对砌体结构建筑物沉降的影响[J].中国铁道科学,2012,33(4):38-44.
[15] 何川,李讯,江英超,等.黄土地层盾构隧道施工的掘进试验研究[J].岩石力学与工程学报,2013,32(9):1736-1743.
[16] 罗兵,黄万杰,杨帅.基于BP神经网络的库存动态预测及其应用[J].重庆大学学报,2005,28(2):137-140.
[17] 张治国,张孟喜.软土城区土压平衡盾构上下交叠穿越地铁隧道的变形预测及施工控制[J].岩石力学与工程学报,2013,32(S2):3428-3439.
[18] 付龙龙,李晓龙,周顺华,等.土压平衡盾构机土舱压力的设定方法及原位实测反分析[J].中国铁道科学,2015,36(5):68-74.
[19] 蒙国往,周佳媚,高波,等.地铁盾构掘进引起的软弱地层沉降分析[J].现代隧道技术,2017,54(6):117-125.
[20] 姜德义,任松,刘新荣,等.隧道拱顶下沉时序遗传算法神经网络预测模型[J].地下空间与工程学报,2006,2(4):547-550.
[21] 黄金林,苏相利,王贵杰.盾构法隧道施工的横向沉降槽分析[J].铁道建筑,2008,48(2):34-37.
[22] 雷江松.上下重叠地铁盾构隧道施工对邻近建筑物影响及控制措施研究[J].铁道标准设计,2018,62(7):115-119.
[23] Verrujt A,Booker J R.Surface settlements due to deformation of a tunnel in an elastic half plane[J].Geotechnique,1998,46(4):753-756.
[24] Ylmaz Mahmuto■lu.Evaluation of surface settlement in the Istanbul metro in terms of analytical,numerical and direct measurements[J].Bulletin of Engineering Geology and the Environment,2012,71(3):499-510.
[25] 魏纲,张世民,齐静静,等.盾构隧道施工引起的地面变形计算方法研究[J].岩石力学与工程学报,2006,25(S1):3317-3323.
[26] Sagaseta C.Auhotr's Reply to Sehnlidt[J].Geoteehnique,1988,38(4):647-649.
[27] Loganathan N,Poulos H G.Analytical Prediction for Tunneling induced Ground Movement in Clays[J].Journal of Geoenvironmental Engineering,1998,124(9):846-856.
[28] 邱明明,杨果林,吴镇清,等.双孔平行地铁隧道盾构施工地表沉降分布规律研究[J].现代隧道技术,2017,54(2):96-105.
[29] 魏纲.盾构隧道施工引起的土体损失率取值及分布研究[J].岩土工程学报,2010,32(9):1354-1361.
[30] 施虎,龚国芳,杨华勇,等.基于单神经元的盾构推进速度自适应PID控制[J].中国机械工程,2009,20(2):138-141.
[31] 刘国斌,龚国芳,朱北斗,等.基于BP神经网络的盾构推进速度自适应PID控制[J].工程设计学报,2010,17(6):454-458.
[32] 刘镇,黎杰明,杨旭,等.考虑邻近土洞影响的盾构掘进速度控制[J].工程地质学报,2017,25(6):1633-1639.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |