史永跃, 杨林, 严金秀, 周桂银, 李德明, 程晓朋, 温书亿, 徐志彬. 2019: 基于地质展开图的单层衬砌在青岛地铁的应用. 工程地质学报, 27(s1): 23-30. DOI: 10.13544/j.cnki.jeg.2019174
    引用本文: 史永跃, 杨林, 严金秀, 周桂银, 李德明, 程晓朋, 温书亿, 徐志彬. 2019: 基于地质展开图的单层衬砌在青岛地铁的应用. 工程地质学报, 27(s1): 23-30. DOI: 10.13544/j.cnki.jeg.2019174
    SHI Yongyue, YANG Lin, YAN Jinxiu, ZHOU Guiyin, LI Deming, CHENG Xiaopeng, WEN Shuyi, XU Zhibin. 2019: APPLICATION OF SINGLE-LAYER LINING BASED ON GEOLOGICAL SKETCH-MAP IN QINGDAO METRO. JOURNAL OF ENGINEERING GEOLOGY, 27(s1): 23-30. DOI: 10.13544/j.cnki.jeg.2019174
    Citation: SHI Yongyue, YANG Lin, YAN Jinxiu, ZHOU Guiyin, LI Deming, CHENG Xiaopeng, WEN Shuyi, XU Zhibin. 2019: APPLICATION OF SINGLE-LAYER LINING BASED ON GEOLOGICAL SKETCH-MAP IN QINGDAO METRO. JOURNAL OF ENGINEERING GEOLOGY, 27(s1): 23-30. DOI: 10.13544/j.cnki.jeg.2019174

    基于地质展开图的单层衬砌在青岛地铁的应用

    APPLICATION OF SINGLE-LAYER LINING BASED ON GEOLOGICAL SKETCH-MAP IN QINGDAO METRO

    • 摘要: 单层衬砌在欧洲已是一项非常成熟的技术,是基于Q系统在硬岩地下工程施工过程中不断发展起来的。我国自20世纪60年代引进单层衬砌技术以来,先后在十几个工程部分采用了单层衬砌作为永久衬砌,并取得了较好的效果,但由于施工技术、材料、设备和管理等的原因,至今未能全面推广使用。依托青岛地铁西镇站单层衬砌研究课题,介绍了隧道施工地质编录作用、内容,并详细阐述了单层衬砌全断面地质展开图绘制的具体要求、原则、要点和步骤。最后,结合地质编录及全断面展开图的成果,分段对Q系统的6个参数赋值,并计算出相应的Q值,根据(Q,De)在Q系统支护图中初步确定隧道支护参数,利用Unwedge程序对主要结构面组合的楔形块体进行支护前后的稳定性分析,并参考地质条件和当地以往类似工程的经验,最终确定了单层衬砌支护设计参数。

       

      Abstract: Single-layer lining is a very mature technology in Europe, which is developed continuously in the construction process of hard rock underground engineering based on Q system. Since the introduction of single-layer lining technology in the 1960s, China has adopted single-layer lining as permanent lining in more than a dozen projects, and achieved good results. However, due to the construction technology, materials, equipment and management, it has not been fully popularized. Based on the research project of single-layer lining of Xizhen Station of Qingdao Metro, this paper introduces the function and content of geological logging for tunnel construction, and expounds in detail the specific requirements, principles, key points and steps of drawing full-section geological sketch-map of single-layer lining. Finally, according to the results of geological logging and sketch maps, the six parameters of Q system are assigned and the corresponding Q values are calculated. According to(Q,De) in Q system supporting maps, the tunnel supporting parameters are preliminarily determined, The Unwedge program was used to analyze the stability of the wedge block with the main discontinuities combination before and after the support. and the final design parameters of single-layer lining support are determined by referring to geological conditions and local experience of similar projects in the past.

       

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