2019, 11(6): 129-134. doi: 10.16670/j.cnki.cn11-5823/tu.2019.06.20
浅埋彪水岩软岩隧道开挖数值模拟研究
昆明理工大学, 昆明 650500 |
Numerical Simulation of Tunnel Excavation in Soft Surrounding Rock of Shallow Buried Puma Water Rock
Kunming University of Technology, Kunming 650500, China |
引用本文:
张少科, 杨远怀, 邹大晴. 浅埋彪水岩软岩隧道开挖数值模拟研究[J]. 土木建筑工程信息技术,
2019, 11(6): 129-134.
doi: 10.16670/j.cnki.cn11-5823/tu.2019.06.20
Citation:
Zhang Shaoke, Yang Yuanhuai, Zou Daqing. Numerical Simulation of Tunnel Excavation in Soft Surrounding Rock of Shallow Buried Puma Water Rock[J]. Journal of Information Technologyin Civil Engineering and Architecture,
2019, 11(6): 129-134.
doi: 10.16670/j.cnki.cn11-5823/tu.2019.06.20
摘要:浅埋彪水岩软岩隧道位于正在建设的香丽高速虎跳峡地下立交段，该围岩岩性主要为灰岩夹板岩、板岩夹灰岩，施工难度大、风险高，是浅埋彪水岩软岩隧道施工的主要控制工程。在建立合理工程地质模型的基础上，选取SC-1型典型软岩隧道断面作为研究对象，采用FLAC3D软件对二台阶预留核心土、单侧壁导坑、双侧壁导坑等，隧道工法进行数值模拟，通过围岩受力、变形比较和分析，证明浅埋暗挖时采用双侧壁导坑法对于该隧道施工更为安全；围岩压力、拱顶沉降现场监测结果表明：采用双侧导壁法施工对彪水岩软岩隧道地表沉降控制更加有利、安全。但是，采用双侧导壁工法造价较高，所以在满足施工安全和地表沉降量需求的同时还应考虑施工成本因素，这对工法的评选有了更高的数值要求。本文根据数值模拟、现场监测、工程造价预算及地表沉降量要求，认为双侧导壁施工方案适用于本工程，也可以通过加强单侧导壁工法的支护参数来控制浅埋段地表沉降。该研究对类似隧道工法的评选具有重要的工程借鉴意义。
Abstract: the soft rock tunnel of shallow buried Puma water rock is located at the underground interchange section of Xiangli high speed Hujiaoxia which is under construction. The lithology of the surrounding rock is mainly composed of limestone splint rock and slate rock intercalated limestone, which is difficult to construct and high in risk. It is the main control project of soft rock tunnel construction. On the basis of establishing reasonable engineering geological model, the section of typical soft rock tunnel of SC-1 type is selected as the research object, and the numerical simulation of tunnel construction schemes such as reserved core soil, single side tunnel and double side wall tunnel with FLAC3D software is carried out. Through the comparison and analysis of the stress and deformation of surrounding rock, it is proved that the double-side wall guide pit method is used in shallow underground excavation. Tunnel construction is safer. However, the construction cost of two-side guide wall construction method is higher, so the construction cost factor should be considered at the same time to meet the requirements of construction safety and surface settlement, which has higher numerical requirements for the selection of construction method. According to the requirements of numerical simulation, on-site monitoring, project cost budget and surface settlement, this paper considers that the construction scheme of double-side guide wall is suitable for this project, and can also control the surface settlement of shallow buried section by strengthening the supporting parameters of one-sided guide wall construction method. This study can be used for reference in the selection of similar tunnel construction methods.
| [1] |
本刊记者.我国已是世界上公路隧道最多、发展最快的国家——中国公路学会隧道工程分会理事长蒋树屏在2013年全国公路隧道学术交流会开幕式上的讲话(摘录)[J].隧道建设, 2013, 33(10): 808. |
| [2] |
唐绍武, 王庆林.木寨岭隧道大战沟斜井高地应力软岩大变形施工技术[J].隧道建设, 2010, (4): 199-201. |
| [3] |
王梦恕.地下工程浅埋暗挖技术通论[M].合肥:安徽教育出版社, 2004. |
| [4] | |
| [5] |
JTJ042-94, 公路隧道施工技术规范[S]. |
| [6] |
周维垣, 杨强.岩石力学数值计算方法[M]. |
| [7] |
邵建国.FLAC3D在隧道施工中的数值模拟分析[J].甘肃科技, 2014, 30(23): 1-4.doi: 10.3969/j.issn.1000-0952.2014.23.001 |
| [8] | |
| [9] |
尚淑萍.铁路站场下修建大跨度地铁隧道地表沉降控制技术研究[D].长安大学, 2015. |
| [10] |
杨哲峰, 徐颖, 罗林, 等.软岩隧道破坏机理及大变形趋势判断研究[J].铁道建筑, 2014(11): 56.doi: 10.3969/j.issn.1003-1995.2014.11.16 |
| [11] |
杨建民, 舒东利.软岩隧道初期支护沉降机理及其工程措施研究[J].隧道建设(中英文), 2018, 38(4): 1-6. |
| [12] |
邵建国.FLAC3D在隧道施工中的数值模拟分析[J].甘肃科技, 2014, 30(23): 1-4.doi: 10.3969/j.issn.1000-0952.2014.23.001 |
| [13] |
计量
- PDF下载量(23)
- 文章访问量(1847)
- HTML全文浏览量(1025)
