Crack Propagation of Jointed Rock and Application

Qing Han Wang; Shu Cai Li; Li Ping Li; Jing Wang; Qian Zhang

doi:10.4028/www.scientific.net/AMM.651-653.1143

Paper Titles

Analysis on the Competitiveness Strength of Yunnan Province in Construction Industry Based on the Model of Improved TOPSIS
p.1125

Based on the Experience of India how to Design Wisdom City in China
p.1130

Condition Management of High-Speed Railway Infrastructure Based on Full Life Cycle
p.1135

Countermeasures and Suggestions for Planning and Construction of New Rural Communities
p.1139

Crack Propagation of Jointed Rock and Application
p.1143

Discussion of the BIM Implementation Mode in Real Estate Development Companies
p.1147

Evaluation Method of Intensive Use of Downtown Land
p.1151

FEM Analysis of Cooperative Effects of Formwork Supporting System and Concrete Floor
p.1158

Grey Relational Analysis of Fatigue Performance of Semi-Rigid Pavement Structure
p.1164

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 651-653Crack Propagation of Jointed Rock and Application

Crack Propagation of Jointed Rock and Application

Abstract:

The excavation engineering in jointed rock masses, due to the changes in its original stress state, the preexisting fissures will expand and new fissures may emerge, which will degrade its mechanical and strength properties. This paper uses the DDARF method to preinstall fissures of different numbers and spacing in the rock block, then studies the crack initiation, expansion, transfixion and the destruction process by numerical modeling experiment, and finds the relevant stress strain curve. It also studies the influence of the numbers of fissures and different spacing and the influence of lateral compression on the test specimen to find the strength envelope of the test specimen. The parameters are applied in a case study. The differences in the failure behaviors of the intact and jointed rock masses after cavern excavation are analyzed and compared.

You might also be interested in these eBooks

Material Science, Civil Engineering and Architecture Science, Mechanical Engineering and Manufacturing Technology II

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 651-653)

Pages:

1143-1146

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.651-653.1143

Citation:

Cite this paper

Online since:

September 2014

Authors:

Qing Han Wang, Shu Cai Li, Li Ping Li*, Jing Wang, Qian Zhang

Keywords:

Crack Propagation, Jointed Rock Masses, Numerical Analysis, Underground Construction

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Chen Weizhong, Zhu Weishen Rheology and fracture damage coupled model for rock mass and its application, 2002, 39: 459–476.

Google Scholar

[2] Fang Z，Harrison J P. Application of a local degradation model to the analysis of brittle fracture of laboratory scale rock specimens under triaxial conditions[J]. International Journal of Rock Mechanics and Mining Sciences, 2002, 39: 459–476.

DOI: 10.1016/s1365-1609(02)00036-9

Google Scholar

[3] Shi G H. Numerical Manifold Method (NMM) and Discontinuous Deformation Analysis (DDA).

Google Scholar

[4] Yuyong Jiao, Xiuli Zhang, Tingchun Li The DDARF Method of Simulating the Entire Process of the Destruction of Rock Mass with Joints [M]. (2010), (In Chinese).

Google Scholar

[5] Yuyong Jiao, Xiuli Zhang, Simulation of rock crack propagation using discontinuous deformation analysis method. Chinese Journal of Rock Mechanics and Engineering 2007, 26(4): 682-691.

Google Scholar

[6] Early warning index of deformation for gravity dam based on discontinuous deformation analysis.

Google Scholar

[7] Study on Hydro-Mechanical Coupling of Fractured Rock Mass Based on DDA, (2010).

Google Scholar