长春白垩纪泥岩风化程度的划分方法
摘要:长春下伏白垩纪泥岩,属极软岩或软岩,具有软化崩解的特性。目前,长春一些建筑工程需要以深层泥岩做为基桩持力层。此类岩石,国标《岩土工程勘察规范》认为可不进行风化程度的划分,这种观点与长春工程建设需要及工程经验相悖。吉林省地标《岩土工程勘察技术暂行规定》采用标准贯人试验划分泥岩风化状态,给出了全风化至中等风化泥岩判定标准,但标准贯人试验影响因素多,此方法不适用于深层泥岩。运用剪切波速试验的方法,提出了长春泥岩风化程度的划分标准,解决了长春泥岩特别是深层泥岩风化程度划分难题,经工程检验,效果良好。
Abstract:Changchun is underlain by Cretaceous mudstone,belong to the extreme soft rock or soft rock,has the characteristics of softening and disintegration.At present,some construction projects need to use Changchun deep mudstone as pile foundation bearing layer.This kind of rock,national standard "Code for Investigation of Geotechnical Engineering" cannot think of the weathering degree of division,this view is contrary to Changchun engineering construction and engineering experience.Jilin landmark "Geotechnical Engineering Investigation Technology Interim Provisions" of the standard penetration test of mudstone weathered state,gives the whole weathered to medium weathering mudstone criteria,but the influence factors of the standard penetration test is many,so this method is not suitable for deep mudstone.This paper uses the method of shear wave velocity test,proposes the division standard of weathering degree of the Changchun mudstone,especially solves the deep mudstone weathering degree division problems.By the engineering test,the effect is good.
中文标题:
长春白垩纪泥岩风化程度的划分方法
Division Method of Changchun Cretaceous Mudstones Weathering Degree
作者:
李学颖1,孙光1,高涛2
Li Xueying1,Sun Guang1,Gao Tao2
作者简介:李学颖,1968年生,男,汉族,吉林长春人,高级工程师,从事岩土工程勘察、设计和研究。E-mail:718071486@qq.com
通讯地址:
1. 长春市市政工程设计研究院, 吉林长春 130012; 2. 吉林省恒基岩土勘测有限责任公司, 吉林长春 130022
1.ChangchunMunicipalEngineeringDesignandResearchInstitute,Changchun130012,Jilin,China; 2.JilinHengjiGeotechnicalInvestigationCo.,Ltd,Changchun130022,Jilin,China
中图分类号:P512.1
doi:10.3969/j.issn.1007-2993.2015.06.009
出版物:岩土工程技术
收稿日期:2015-06-30
网络出版日期:2021-07-19
关键词:泥岩,刚度,质量密度,风化程度,剪切波速
Key words:mudstone,stiffness,mass density,weathering,shear wave velocity
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