Determination of sedimentation conditions of sandy rocks when calculating boron content from logging data by Ivan S. Khodorov, Igor A. Melnik

“…There are many different methods for determining boron concentration from cores, but often the quality of the rock material extracted from the well does not allow such studies to be carried out, or the core from the required interval has not been sampled at all. …”
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Study on the Effect of Rock Strength on the Macro-Meso Shear Behaviors of Artificial Rock Joints by Yujing Jiang, Sunhao Zhang, Hengjie Luan, Qinglin Shan, Baocheng Li, Dong Wang, Chuanyang Jia

“…The results show that (i) the shear stress curve of low-strength rock joints is strain-softening type, while high-strength rock joints are strain-hardening type, and high-strength rock joints are more sensitive to the change of roughness. …”
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Particle-density segregation of rock–ice avalanche by Zhiping Sun, Shentian Li, Jinkun Dong, Zhibo Dong, Siyou Xiao

“…A series of simulations based on the discrete element method were conducted to quantify the effect of channel slope, ice content, and initial arrangement of ice-gravel on the segregation of rock-ice granular flow. Results show that a smaller slope and lower ice content promote density segregation of the rock-ice granular flow, allowing segregation to proceed more thoroughly, but interestingly, the initial arrangement of ice-gravel does not affect its final segregation state. …”
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The Vibration Characteristics of Ground of Rock Blasting in Silt-Rock Strata by Tao Yin, Chuanbo Zhou, Changqing Zheng, Jugen Fu, Ziru Guo

“…The geology of rock blasting in silt-rock strata is complex, and the vibrations caused by blasting threaten the safety of buildings around the blasting area. …”
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Estimation of Rock Burst Grades Using Rock Mass Strength by Yalei Wang, Jinming Xu, Junshuai Xu, Chuanjiang Zhong

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Field Experimental Study on the Broken Rock Zone of Surrounding Rock and the Rock Borehole Shear Tests of the Large Deformation Tunnel by Guansheng Han, Bo Meng, Hongwen Jing, Jiangyu Wu

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Subvolcanic petrology of the Pico dos Três Estados region (SE Brazil): Implications for Alkaline Magmatic Evolution by Graciano Carlos de Freitas, Artur Corval, Júlio Cesar Lopes da Silva, Helena Saraiva Koenow Pinheiro, Sérgio de Castro Valente

“…Abstract This paper presents a geological study of the subvolcanic bodies present in the Pico dos Três Estados (São Paulo (SP), Rio de Janeiro (RJ), and Minas Gerais (MG)) and its surroundings at the Passa Quatro Alkaline Complex. …”
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Constitutive Model of Rock Uniaxial Damage Based on Rock Strength Statistics by Ming Ji, Kai Chen, Hong Jun Guo

“…Based on the assumption that rock strength follows the log normal distribution statistically, this paper establishes a damage constitutive model of rock under uniaxial stress conditions in combination with the Mohr–Coulomb strength criterion and damage mechanical theory. …”
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Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions by Xiaoyang Zou, Hui Zheng, Yongzhen Mi

“…This paper focuses on studying the correlations of the performance of hard rock tunnel boring machines (TBMs) with operational and rock conditions. …”
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Distribution Features of the Minimum Rock Cover Thickness of the Surrounding Rock Self-Stability of the Metro Tunnel in the Soil-Rock Dualistic Stratum by Ziguang Zhang, Tao Xu, Guangyong Cao, Xiaofeng Liu

“…Based on the maximum value of the self-stability of surrounding rock, the key issues affecting the distribution of the minimum mock cover thickness of the surrounding rock self-stability (MRCT-SRS) of the metro tunnel in the soil-rock dualistic stratum are discussed. …”
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The Reliability-Based Design Optimization of considering Rock-Support Interaction for Rock Tunnels by Hongbo Zhao, Shaojun Li, Bingrui Chen

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Mechanical Properties of Soft Rocks Subjected to Water-Rock Reaction and Cyclic Pressure by Wei Huang, Rui Feng, Huanran Fu, Jingyu Chen, Zili Feng

“…The results indicated a reduction in the uniaxial compressive strength (UCS) under saturated conditions, which is correlated with the disintegration resistance of soft rocks. Moreover, the samples exhibited a softening phenomenon due to water absorption and rock expansion, decreasing the elastic modulus. …”
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Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft-Rock Tunnel by Rui Wang, Yiyuan Liu, Xianghui Deng, Yu Zhang, Xiaodong Huang, Xiao Ding

“…With the rapid development of tunnel construction in China, deep buried and long tunnel projects are emerging in areas with complex engineering geological conditions and harsh environment, and thus large deformation of tunnels under conditions of high in situ stress and soft rock becomes increasingly prominent and endangers engineering safety. …”
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The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM by Manqing Lin, Lan Zhang, Xiqi Liu, Yuanyou Xia, Jiaqi He, Xiaosu Ke

“…It was found that the fractal dimensions of the crystal contours of the specimen’s detrital section had fractal characteristics, and the box-counting dimension based on the SEM image could quantitatively describe the rock-burst failure characteristics. …”
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Rock-Breaking Laws of Disc Cutters with Different Height Differences in Hard Rock Strata by Zelin Lu, Xuchun Wang, Hongwei Teng, Xiaoming Guan, Chen Song, Gang Fan

“…Excessive height difference exists between adjacent disc cutters, which critically affects the rock-breaking efficiency. Relying on a shield section of hard rock mass in Qingdao, the disc cutter abrasions are measured on site, and the reason for low construction efficiency is analysed. …”
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Experimental Investigation of the Anchoring Effect of Two Different Types of Rock Bolts on Fractured Rock by Rongchao Xu, Hui Zhou

“…The results indicated that both the prestressed and fully bonded bolt had a significant influence on the mechanical behavior of fractured rock. The average value of E, σi, σp, and σr of bolted specimens all increased due to the effect of the rock bolt. …”
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Study on the Creep Constitutive Model of a Sandstone Rock under the Water-Rock Interaction by Zuosen Luo, Zuoxiang Zhu, Jianlin Li, Lehua Wang, Qiao Jiang, Jingyu Zhang, Eleyas Assefa, Huafeng Deng

“…Due to the limitations of the visco-elastoplastic model, a thorough modification was done to account the effect of the water-rock interaction on the mechanical degradation of the sandstone rock. …”
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Analysis of Rock β-Dynamic Parameters and the Stability of Earthquake Dangerous Rocks Based on PFC by Yun Tian, Lin-feng Wang, Biao Zeng, Hong-hua Jin

“…Mesoparameters of rock materials are the main factors affecting the macromechanical properties of dangerous rock slopes. …”
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Soil-Rock Slope Stability Analysis under Top Loading considering the Nonuniformity of Rocks by Huang Xian-Wen, Zhi-Shu Yao, Wang Bing-Hui, Zhou Ai-Zhao, Peng-Ming Jiang

“…The value of N was increased with the increase of rock content due to rock skeleton status. The values of N in slopes with angular rocks were about three times higher than those with round rocks which was due to complex geometric shape and distribution characteristics of angular rocks. …”
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In Situ Classification of Original Rocks by Portable Multi-Directional Laser-Induced Breakdown Spectroscopy Device by Mengyang Zhang, Hongbo Fu, Huadong Wang, Feifan Shi, Saifullah Jamali, Zongling Ding, Bian Wu, Zhirong Zhang

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