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Agustawijaya D.S.
Pág. 75 - 81
A new modified strength criterion for soft rock masses is proposed in this paper in order to provide a suitable estimation for soft rock mass strength. The new criterion is based upon the current compression test data of soft materials of over 150 sample...
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D. S. Agustawijaya
Pág. pp. 9 - 14
Soft rock is a term that usually refers to a rock material with a uniaxial compressive strength (UCS) less than 20 MPa. This low strength range might be influenced by physical characteristics, such as size, saturation, weathering and mineral content. A n...
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Nicholas R. MacDonald, Timothy R. M. Packulak and Jennifer J. Day
Direct shear (DS) is a common geotechnical laboratory test used to determine strength and deformation properties of rock discontinuities, such as normal and shear stiffness, peak and residual shear strength, and dilation. These are used as inputs for dis...
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Chuanqi Li, Jian Zhou, Daniel Dias, Kun Du and Manoj Khandelwal
The uniaxial compressive strength (UCS) of rocks is one of the key parameters for evaluating the safety and stability of civil and mining structures. In this study, 386 rock samples containing four properties named the load strength (PLS), the porosity (...
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Rongjin Li, Weishi Bai, Rongjian Li and Jinshuo Jiang
The development of an effective evaluation method suitable for loess-tunnel excavation is necessary to avoid the collapse accidents caused by tunnel excavation and any secondary disasters. Although the Fenner formulas and the modified Fenner formulas are...
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Peicheng Qiu, Yunkai Long and Jiaming Zhang
Based on the excavated slope of a waste incineration power plant in Yuxi, Yunnan Province, China, the finite element strength reduction method was used to investigate the variation rules of the safety factor, displacement, and deformation of the bedding ...
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Zehui Gao, Shuhong Wang, Hong Yin, Qianbai Zhao, Paramonov Vladimr and Youming Li
This study aims to fully explore the influence of rock joint roughness in the slope stability analysis of an open mine. Therefore, based on the least squares parameter estimation method, a generalized shear strength parameter coupling roughness, which is...
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Liping Wang, Xiaotong Chen, Wan Zhang, Yanzhe Tian and Shuanhai Xu
To investigate the effects of long-term freeze?thaw cycles on the physical and mechanical properties as well as the attenuation trend of rocks, this study conducted saturated freeze?thaw tests on coarse sandstone and fine sandstone samples collected from...
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Tingting Wang, Pingfeng Li, Chun?an Tang, Bingbing Zhang, Jiang Yu and Tao Geng
Frozen fractured rock mass is often encountered during the implementation of geotechnical engineering in cold regions. The tensile strength parameters of frozen rock play an important role in the construction of rock slopes involving tensile failure. In ...
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Tae Young Ko and Sean Seungwon Lee
Rock fractures in geological conditions are caused not only by applied stress, but also by stress corrosion. Stress corrosion is an environmentally activated chemical process, associated with the fluid-assisted crack growth. Crack growth due to stress co...
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Martina Vivoda Prodan and ?eljko Arbanas
The Krbavcici landslide occurred in January 1979 near the town of Buzet, Croatia, after a long period of heavy rainfall. It is located in Northern Istria in the area built of flysch rock mass where numerous mass movements in the past and recent history h...
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Zhenhua Han, Luqing Zhang and Jian Zhou
Rock is an aggregate of mineral grains, and the grain shape has an obvious influence on rock mechanical behaviors. Current research on grain shape mostly focuses on loose granular materials and lacks standardized quantitative methods. Based on the CLUMP ...
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Tamara J. Everall and Ioan V. Sanislav
This study uses the uniaxial compressive strength (UCS), the indirect tensile strength (ITS) and the point load tests (PLT) to determine the strength and deformation behavior of previously deformed and altered tonalite and anorthosite. In general, veined...
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Wenpu Li, Dongming Zhang and Minghui Li
Pore gas has a significant influence on rock strength. This study performed triaxial compression tests of gas-infiltrated sandy shale samples to investigate the strength characteristics under gas pressures of 0 and 2 MPa. The effective stress coefficient...
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Shang Yang, Jun Wang, Jianguo Ning and Pengqi Qiu
To investigate the effect of the pure coal/rock strength on the mechanical behavior, failure behavior, and energy evolution of coal-rock combined (CRC) specimens, an AG-X250 Shimadzu Precision Universal Test was used to conduct uniaxial compressive loadi...
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Hongwei Deng, Bokun Zhao, Yigai Xiao and Guanglin Tian
The response characteristics of the mesostructure and macro-characteristics of the soil?rock mixture under repeated freeze?thaw action have an important influence on the safety and stability of the dump slope in low-temperature environments. In order to ...
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Jinsheng Jia, Lianying Ding, Yangfeng Wu, Chun Zhao and Lei Zhao
In order to safely and efficiently use soft rock aggregate cemented dams in red bed regions and promote the development of widely sourced cemented sand and gravel dam materials, the Jinjigou project in China applied soft rock for the first time in the co...
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Tamara J. Everall and Ioan V. Sanislav
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Tao Wang, Weiwei Ye, Liyuan Liu, Aiguo Li, Naisheng Jiang, Le Zhang and Sitao Zhu
To investigate the impact of crack inclination angle on the tensile strength and characteristics of splitting failure in rock, split tests were conducted on fine-grained sandstone with pre-existing cracks under different crack inclination angle condition...
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Haoyu Rong, Guichen Li, Dongxu Liang, Changlun Sun, Suhui Zhang and Yuantian Sun
Investigating the micro-parameters of rock is vital for understanding the macro-properties of rock, such as the uniaxial compressive strength (UCS), Young?s modulus, failure patterns, etc. In this paper, based on the experimental results of rock material...
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