Analysis and discussion on Brazilian tests on layered rock tensile strength

DENG Hua-feng; ZHANG Xiao-jing; ZHANG Heng-bin; WANG Chen-xi-jie; FANG Jing-cheng; XIAO Yao

doi:10.16285/j.rsm.2016.S2.038

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Analysis and discussion on Brazilian tests on layered rock tensile strength

更新时间：2026-06-25

- Analysis and discussion on Brazilian tests on layered rock tensile strength
- Vol. 37, Issue S2, Pages: 309-315(2016)
- 作者机构：
  
  三峡大学三峡库区地质灾害教育部重点实验室,湖北,宜昌,443002
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.S2.038
  CLC： TU452
- Online First：09 June 2018，
  
  Published：2016
- 稿件说明：
移动端阅览
DENG Hua-feng, ZHANG Xiao-jing, ZHANG Heng-bin, et al. Analysis and discussion on Brazilian tests on layered rock tensile strength[J]. 2016, 37(S2): 309-315.
DOI：

DENG Hua-feng, ZHANG Xiao-jing, ZHANG Heng-bin, et al. Analysis and discussion on Brazilian tests on layered rock tensile strength[J]. 2016, 37(S2): 309-315. DOI： 10.16285/j.rsm.2016.S2.038.

摘要

为分析巴西圆盘劈裂法在层状岩体抗拉强度试验中的适用性，在以往层状岩体巴西圆盘劈裂试验成果分析基础上，选取层理砂岩为试验对象，设计并进行了考虑不同层理角度的砂岩巴西圆盘劈裂试验。分析结果表明，（1）层状岩体抗拉强度的各向异性特点非常明显，层理角度对各种层状岩体的劈裂抗拉强度的影响规律是基本类似的，只是影响程度不一样；（2）不同层理角度圆盘试样的破裂面形状差别较大，其破坏模式可以归纳为直线型、折线型和弧形型；（3）当层理角度0°＜β＜90°时，破裂面的发展规律不能严格满足巴西圆盘劈裂试验力学理论模型的假定，采用式（1）计算得到的劈裂抗拉强度只能是一个近似的值；（4）当圆盘试样加载线两侧的岩石材料、层理结构对称分布时，加载时圆盘内的应力分布可以较好地满足其理论计算模型，其试验结果比较准确。研究成果可为层状岩体抗拉强度的准确测定提供较好的参考。

Abstract

In order to analyze the applicability of Brazilian disc splitting method in tensile strength test of layered rock mass

by analyzing Brazilian splitting test results of the layered rock mass

selecting the bedded sandstone as test subjects

a kind of Brazilian disc split test considering sandstones’ different bedding angles has been designed and then carried out. The results show that：(1) The anisotropy of the tensile strength of layered rock is very obvious; and the influence of bedding angle on the splitting tensile strength of layered rock mass is substantially similar

but the degree of influence is different. (2) The difference of different bedding angle disc samples’ fracture surface shape is large; the failure modes can be summarized as linear，bent and arc. (3) When the bedding angle is in the range of 0°＜β＜90°，the development law of rupture surface can not strictly meet the assume of Brazilian splitting test disc mechanics model; the splitting tensile strength calculated by the equation (1) can only be an approximate value. (4) When the rock sample materials and bedding structure are symmetry distributed on both sides of the disc samples` load line

the stress distribution in the disk during the loading process can better satisfy its theoretical calculation model; the test results are more accurate. The research results can provide a good reference for the tensile strength’s accurate determination of the layered rock.

关键词

Keywords

references

Views

614

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental study of anisotropy and mechanical property of quartz sandstone

Mechanical properties and energy damage evolution mechanism of deep-buried carbonaceous phyllite

Mechanical and anisotropic properties of silty slates

Fractal characteristics of joint surface morphology of Pengshui shale and anisotropic characterization based on joint roughness coefficient

Evolution of anisotropic mechanical properties and damage model of sandstone under unidirectional freeze-thaw action

Related Author

PENG Jian-wen

ZENG Fei-tao

LI Chang-hong

MIAO Sheng-jun

CHEN Zi-quan

HE Chuan

WU Di

GAN Lin-wei

Related Institution

Key laboratory of High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 1000086

Department of Engineering Mechanics，Dalian University of Technology

Key Laboratory of Transportation Tunnel Engineering of Ministry of Education, Southwest Jiaotong University

College of Civil Science and Engineering, Yangzhou University

Faculty of Engineering, China University of Geosciences

AI问答

⁰