土岩混合体力学特性室内直剪及现场推剪试验对比研究
摘要:土岩混合体是由土体与不规则岩块混合形成的一种特殊地质介质,在山区广泛分布,对山区道路、隧道等工程建设影响较大。由于其特殊性,其力学性质不易查明,从而影响对其进行准确评价,由此可能造成工程成本的浪费或处理不当带来工程安全隐患等问题。结合兴延高速公路梯子峪隧道工程中一处典型的土岩混合体,进行了3组原位水平推剪试验及2组室内直剪试验,揭示了这类非均质、非均匀性的复杂地质介质的力学特性,通过对比原位试验及室内试验成果,综合分析、评价本工程中的土岩混合体的抗剪强度指标,充分体现了原位测试工作在解决实际工程问题中的必要性。
Abstract:The soil rock mixture is a kind of special geological medium formed by soil mixed with irregular rocks,widely distributed in the mountains and had a greater influence to the road and tunnel engineering construction in mountainous area.Because of its particularity,its mechanical property is not easy to find out,which affect on the accurate evaluation,it may cause the waste of engineering cost or improper handling to cause the potential risk of the project.This paper combined with a typical soil rock mixture in TiZi tunnel project of XingYan highway,conducted three groups level shear test in-situ and two groups direct shear test,revealed the mechanical properties of this heterogeneity,inhomogeneous geological medium,by comparing with the in-situ test and laboratory test results,comprehensive analysed and evaluated the Shear strength index of the soil rock mixture,fully emboding the necessity of the in-situ testing work in solving the practical engineering problems.
中文标题：
土岩混合体力学特性室内直剪及现场推剪试验对比研究
The Comparative Study on Laboratory Direct Shear Test with In-Situ Shear Test of Mechanical Characteristics on the Soil-Rock Mixture
作者：
姚宾科,李有明,刘长青
Yao Binke,Li Youming,Liu Changqing
作者简介:姚宾科,男,1984年生,汉族,江苏南京人,硕士研究生,工程师,主要从事岩土工程勘察及地质灾害评估工作。E-mail:ybkl210@163.com
通讯地址：
北京市勘察设计研究院有限公司, 北京 100083
BGIEngineeringConsultantsLtd.,Beijing100083,China
中图分类号:TU411.7
doi:10.3969/j.issn.1007-2993.2017.02.007
出版物：岩土工程技术
收稿日期:2016-11-15
网络出版日期:2021-07-06
关键词:土岩混合体,力学特性,水平推剪试验,直剪试验
Key words:soil rock mixture,mechanical properties,level shear test,direct shear test
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