Solutions and Measures for TBM Extrication in Extremely Weak and Broken Water Rich Formation
-
摘要: 某铁路隧道工程平导洞TBM在穿越软弱破碎富水地层时出现涌水溜坍，在地质探测和管棚施工过程中存在钻孔压力过大、泥浆裹钻、孔内喷涌等异常情况，盾尾左侧突发涌水并携带大量泥沙涌出，造成盾体及主梁区域围岩变形，TBM被困，风险极大。为应对现场出现的问题，使TBM快速脱困，采取了超前钻探、注浆加固、高位支洞泄水、安装双速减速机以及超前管棚支护和护盾周边扩挖的方法，最终实现了TBM的安全脱困。这些方法的联合使用，为极端软弱破碎富水地层TBM的施工与险情处理提供了可靠的借鉴方案。Abstract: When the horizontal pilot tunnel TBM of a railway tunnel project passes through the weak, broken and water rich stratum, it burst and collapsed. In the process of geological exploration and pipe shed construction, abnormal conditions occurred, such as excessive drilling pressure, mud wrapped drilling, water gushing in the hole and so on. Water poured suddenly and large amount of sediments gushed in the left side of shield tail, which caused the deformation of shield body and main beam area surrounding rock. TBM was trapped and had great risk. In order to deal with the problems and make TBM out of trouble quickly, the methods of advanced drilling, grouting reinforcement, high level adit drainage, installation of double speed reducer, advanced pipe shed support and shield surrounding excavation were adopted, and finally the TBM is out of trouble. The combined methods provides a reliable reference scheme for the construction and danger treatment of TBM in extremely weak and broken water rich strata.
-
Key words:
- weak and broken /
- water rich strata /
- tunnel construction /
- TBM trapped
-
[1] 荆留杰,张 娜,杨 晨. TBM及其施工技术在中国的发展与趋势[J]. 隧道建设,2016,36(3):331-334. doi: 10.3973/j.issn.1672-741X.2016.03.014 [2] 刘冀山,肖晓春,杨洪杰,等. 超长隧洞 TBM 施工关键技术研究[J]. 现代隧道技术,2005,42(4):37-43. doi: 10.3969/j.issn.1009-6582.2005.04.008 [3] 《中国公路学报》编辑部. 中国隧道工程学术研究综述·2015[J]. 中国公路学报,2015,28(5):1-65. doi: 10.3969/j.issn.1001-7372.2015.05.001 [4] 张镜剑,傅冰骏. 隧道掘进机在我国应用的进展[J]. 岩石力学与工程学报,2007,26(2):226-238. doi: 10.3321/j.issn:1000-6915.2007.02.002 [5] 赵海雷,陈 馈,周建军,等. 引松供水4标TBM连续穿越灰岩的施工技术研究[J]. 隧道建设(中英文),2017,37(3):354-362. [6] 秦银平,孙振川,陈 馈,等. 复杂地质条件下TBM卡机原因及脱困措施研究[J]. 铁道标准设计,2020,64(8):92-96. [7] 赵 毅. 小直径双护盾TBM超前化学灌浆脱困施工技术[J]. 隧道建设,2013,33(1):73-77. [8] 罗 毅. 管棚与化学灌浆在TBM卡机脱困中的应用[J]. 水利规划与设计,2016,(2):98-100. doi: 10.3969/j.issn.1672-2469.2016.02.036 [9] 徐虎城. 断层破碎带敞开式TBM卡机处理与脱困技术探析[J]. 隧道建设(中英文),2018,38(S1):156-160. [10] 胡新朋,王振飞,王亚锋. 敞开式TBM穿越富水砂化断层破碎带施工技术研究[J]. 中国铁路,2020,(12):136-143. [11] 刘晓瑞. 小导洞迂回反向支护在TBM卡机脱困中的应用[J]. 人民黄河,2020,42(2):109-112. doi: 10.3969/j.issn.1000-1379.2020.02.023 -
下载:
图(8)
计量
- 文章访问数: 73
- HTML全文浏览量: 146
- PDF下载量: 16
- 被引次数: 0
