单轴压缩试验法向临界阻尼比对岩石宏观参数的影响研究  

Influence of Normal Critical Damping Ratio on Macroscopic Parameters of Rock in Uniaxial Compression

作　　者：董海峰 邬昊辰 孙淼军 DONG Haifeng;WU Haochen;SUN Miaojun(Ningbo Zhoushan Port Company Limited,Ningbo 315202,Zhejiang,China;Ningbo Zhoushan Port Nonferrous Ore Storage and Transportation Co.,Ltd.,Ningbo 315800,Zhejiang,China;PowerChina Huadong Engineering Corporation Limited,Hangzhou 310014,Zhejiang,China;Marine Rock Engineering Survey Technology and Equipment Zhejiang Engineering Research Center,Hangzhou 310014,Zhejiang,China)

机构地区：[1]宁波舟山港股份有限公司,浙江宁波315202 [2]宁波舟山港有色矿储运有限公司,浙江宁波315800 [3]中国电建集团华东勘测设计研究院有限公司,浙江杭州310014 [4]海洋岩石工程勘察技术与装备浙江省工程研究中心,浙江杭州310014

出　　处：《水力发电》2024年第3期39-43,共5页Water Power

基　　金：自治区高校基本科研业务费科研项目(XJEDU2023P-010)。

摘　　要：为研究法向临界阻尼比对岩石的宏观参数的影响,基于单轴压缩试验,采用PFC^(2D)数值模拟软件,通过前期标定,完成试样模型的建立,并通过改变法向临界阻尼比,研究其对峰值强度、弹性模量、泊松比、试样能量损耗的影响,同时观察试样破坏形态的改变。结果表明,法向临界阻尼比对峰值强度、泊松比影响较大,对弹性模量影响较小,随着法向临界阻尼比的增大,试样的能量损耗和破坏形态都有先减少后增大的趋势。In order to study the influence of the normal critical damping ratio on the macroscopic parameters of rocks,the sample model is firstly established based on uniaxial compression tests after preliminary calibration,and then the PFC^(2D) numerical simulation software is used to analyze the influence of normal critical damping ratio on peak strength,elastic modulus,Poisson's ratio and energy loss of sample by changing the normal critical damping ratio.The change of failure mode of sample is also observed.The conclusions are as follows:(a)the normal critical damping ratio has a greater influence on peak strength and Poisson's ratio,but has a lesser influence on elastic modulus;and(b)with the increase of normal critical damping ratio,the energy loss and failure mode of the sample tends to decrease first and then increase.

关 键 词：岩石力学 宏观参数 能量场 单轴压缩试验 法向临界阻尼比 影响 

分 类 号：TU458[建筑科学—岩土工程]