土工基础

›› 2019, Vol. 33 ›› Issue (1): 91-94.

• 工程实录 • 上一篇    下一篇

采用综合勘测技术研究隧道锚岩体工程地质特征

余 颂，李光耀   

  1. （中铁大桥勘测设计院集团有限公司，武汉 430050）
  • 收稿日期:2018-11-16 修回日期:2018-12-04 出版日期:2019-03-02 发布日期:2019-03-08
  • 作者简介:余 颂（1981-），男，硕士，高工，研究方向为岩土工程勘察。

Engineering Geological Characteristics of Rock Mass Reinforced with Rock Anchors Through Comprehensive Investigation Methods

YU Song, LI Guangyao   

  1. (China Zhongtie Major Bridge Reconnaissance and Design Institute Co., Ltd, Wuhan430050)
  • Received:2018-11-16 Revised:2018-12-04 Online:2019-03-02 Published:2019-03-08

摘要： 结合岩溶地区新型悬索桥工程实例—中缅天然气管道澜沧江跨越工程，介绍了隧道式锚碇综合勘测技术；通过工程地质调绘、钻探、物探、跨孔电磁波CT、波速测试、钻孔全景数字摄像、室内试验等多种手段，研究了锚碇岩体的工程地质特征，从地层分布情况、岩溶发育、裂隙发育、岩体完整性、水文地质特征等多个方面对岩体工程地质进行分析与评价；根据测试结果并结合工程经验，给出了相应的设计参数，并对设计及后续施工提出了合理化建议。

关键词: 隧道锚, 综合勘测技术, 岩体工程地质, 岩溶

Abstract: This paper presents a case study of a suspension bridge construction in karst terrain: ChinaMyanmar natural gas pipeline crossing the Lancang River Project. The comprehensive investigation methods for the rock anchorage zone design and construction. The engineering characteristics of rock anchorage zone were investigated by engineering geology survey, geotechnical borings, geophysical methods, crosshole electromagnetic wave CT, acoustic velocity measurement, borehole panoramic digital image and laboratory tests. The geological stratigraphy, distribution of karst caverns and rock pinnacles, integrity of karstic rock mass and hydrogeological aspects of rock anchorage zone were extensively evaluated. The design parameters for the construction were also recommended in the paper.

Key words: tunnel anchorage, comprehensive investigation methods, engineering geology of rock mass, karst terrain