胶东白垩系泥岩矿物成分、工程破坏特性及应对措施研究  

Research on mineral composition,engineering failure characteristics,and response measures of Cretaceous mudstones in Jiaodong

作　　者：李鹏 高雪莲[2] LI Peng;GAO Xuelian(China Railway Design Group Co.,Ltd.,Tianjin 300142,China;Tianjin Petroleum Vocational and Technical College,Tianjin 301607,China)

机构地区：[1]中国铁路设计集团有限公司,天津300142 [2]天津石油职业技术学院,天津301607

出　　处：《华北地质》2023年第2期79-88,共10页North China Geology

基　　金：中国铁路设计集团有限公司科技开发计划重点课题(TSY2023RD02)。

摘　　要：在我国胶东地区广泛分布的白垩系上统王氏群泥岩,属于极软岩,一般具膨胀特性。该地层吸水、失水后,产生涨缩现象,对建设工程带来极大的安全隐患。本文通过对该泥岩进行矿物成分分析、崩解机制分析和膨胀特性试验指标研究,基本掌握了该地层的工程破坏基本特征,并通过各项试验指标提出了针对该地层的工程应对措施方案,可达到避免或者减小该地层对工程建设和运营造成的安全隐患。本文研究成果可为该地区同类工程的建设和运营提供借鉴意义。The mudstone of the Upper Cretaceous Wangshi Group,widely distributed in the Jiaodong area of China,belongs to extremely soft rock and generally has swelling characteristics.After water absorption and loss in this formation,there is a phenomenon of swelling and shrinkage,which poses great safety hazards to construction projects.This article conducts mineral composition analysis,disintegration mechanism analysis,and expansion characteristic test index research on the mudstone,and basically grasps the basic characteristics of engineering damage in the formation.Through various test indicators,it proposes engineering response measures for the formation,which can avoid or reduce the safety hazards caused by the formation to engineering construction and operation.The research results of this article provide reference significance for the construction and operation of similar projects in the region.

关 键 词：胶东 白垩系 泥岩 矿物成分 工程破坏特性 

分 类 号：TU45[建筑科学—岩土工程]