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Full-Text Articles in Civil and Environmental Engineering
Fracturing Mechanism Of Rock-Like Specimens With Different Joint Densities Based On Dic Technology, Fei-Fei Qi, Ke Zhang, Jian-Bin Xie
Fracturing Mechanism Of Rock-Like Specimens With Different Joint Densities Based On Dic Technology, Fei-Fei Qi, Ke Zhang, Jian-Bin Xie
Rock and Soil Mechanics
In order to study the influence of joint density on the strength characteristics and failure modes of rock mass, the rock-like specimens with different joint densities were prepared by using 3D sand printing, with the quartz sand and furan resin being employed as the printing materials. The uniaxial compression test was performed on the 3D sand printed specimens, and the digital image correlation (DIC) method was used as a non-contact technique to monitor the full-field deformation. The crack initiation, propagation and coalescence behaviors were quantitatively analyzed from the micromechanics point of view. The results show that the shape of stress-strain …
Field Model Test On Failure Mechanism Of Artificial Cut-Slope Rainfall In Southern Jiangxi, Li Wang, Gao Li, Yong Chen, Jian-Min Tan, Shi-Mei Wang, Fei Guo
Field Model Test On Failure Mechanism Of Artificial Cut-Slope Rainfall In Southern Jiangxi, Li Wang, Gao Li, Yong Chen, Jian-Min Tan, Shi-Mei Wang, Fei Guo
Rock and Soil Mechanics
Geological disasters such as landslides occur frequently in southern Jiangxi, mostly induced by rainfall and artificial slope cutting. Physical model tests, especially field model tests, are considered effective to reveal the mechanism of landslides. The case on a cutting slope featured with weathered metamorphic rock in southern Jiangxi is investigated, in which a self-designed rainfall simulation system is applied. The alignment of field instrumentation includes four boreholes for measuring water content as well as pore pressure and two monitoring points for displacement. An artificial rainfall was carried out on the site. The ground response in terms of water content of …
Investigation On Brazilian Tests And Simulations Of Carbonaceous Slate With Different Bedding Angles, Er-Qiang Li, Hong-Chang Zhang, Long-Fei Zhang, Tian-Yu Zhu, Jing-Gan Lu, Ji-Li Feng
Investigation On Brazilian Tests And Simulations Of Carbonaceous Slate With Different Bedding Angles, Er-Qiang Li, Hong-Chang Zhang, Long-Fei Zhang, Tian-Yu Zhu, Jing-Gan Lu, Ji-Li Feng
Rock and Soil Mechanics
Bedding structural planes play a dominated role in the failure process of carbonaceous slate under loading/unloading conditions. In this work, specimens with the clay mineral rich carbonaceous slate were sampled from Muzhailing tunnel of Shaanxi province in China. A series of Brazilian split tests for the rock specimens was conducted and the corresponding numerical simulations were perfor- med using the cohesive zone model (CZM), in which different bedding angles in the rock were taken into account. This study indicates that the load-displacement relations of the rock specimens with different bedding angles under loads are similar to each other. All of …