软岩地区三叠系中统巴东组岩体完整性评价方法  

Rock Mass Integrity Evaluation Method of Middle Triassic Badong Formation in Soft Rock Area

作　　者：李均山 郭宇 李清山 LI Junshan;GUO Yu;LI Qingshan(Nuclear Industry(Tianjin)Engineering Survey Institute Co.,Ltd.,Tianjin 301800,China;Nanjiang Hydrogeological&Engineering Geology Brigade of Chongqing Bureau of Geology and Minerals Exploration,Chongqing 401120,China)

机构地区：[1]核工业(天津)工程勘察院有限公司,天津301800 [2]重庆市地质矿产勘查开发局南江水文地质工程地质队,重庆401120

出　　处：《路基工程》2023年第1期89-92,共4页Subgrade Engineering

摘　　要：依托奉节地区某试验场地三叠系中统巴东组(T2b)岩体,通过抽样法布点取芯,统计岩芯获得率,并与传统波速测试方法进行相关性分析,研究岩芯获得率与岩体完整程度间关系,评价工程地质勘察中的岩体完整性。根据岩芯获得率指标将岩体完整程度分为5级,结果表明:岩芯获得率法能直观并量化的反映岩体完整程度,尤其对于岩体完整程度变异性大,或岩体完整程度难以判定的工程场地较为适用。In relation to the rock mass of the middle triassic(T2b)at the test site of Badong formation in Fengjie area,through the sampling method for coring,the core acquisition rate is counted,the correlation analysis with traditional wave velocity test methods is carried out,and the relationship between the core acquisition rate and the integrity of rock mass is studied,and rock mass integrality in engineering geological survey is estimated.According to the core acquisition rate index,the integrity of rock mass is divided into five grades.The results show that the core acquisition rate method can intuitively and quantitatively reflect the integrity of rock mass,especially it is more suitable for engineering sites where the integrity of rock mass has great variability or it is difficult to determine the integrity of rock mass.

关 键 词：巴东组 岩体完整性系数 岩体完整程度 岩芯获得率 波速测试 

分 类 号：TU473.1[建筑科学—结构工程]