Field Detection and Numerical Simulation Study on Roof Asymmetric Fracture Mechanism of Large-Span Soft Rock Roadway with Discontinuity Surface by Liang Chen, Shouyang Gao, Bin Miao, Nan Yao, Shizhong Zhang, Wei Zhang

“…Research results can provide an extremely important reference for the optimization and design of support scheme with discontinuity-thick soft rock roof-large span roadways.…”
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Failure Mechanism Analysis and Support Design for Deep Composite Soft Rock Roadway: A Case Study of the Yangcheng Coal Mine in China by Bangyou Jiang, Lianguo Wang, Yinlong Lu, Shitan Gu, Xiaokang Sun

“…This paper presented a case study of the failure mechanisms and support design for deep composite soft rock roadway in the Yangcheng Coal Mine of China. …”
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Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft by Shengrong Xie, Zaisheng Jiang, Dongdong Chen, En Wang

“…Aiming at solving the problem of asymmetric deformation, failure, and stability control of surrounding rock caused by the excavation of deep super large section soft rock chamber group passing through multilayer strata, taking super large section soft rock chamber group connected by deep vertical shaft in Wuyang Coal Mine as the engineering background, the deformation development mode of surrounding rock, the expansion situation of loosening range, and the plastic failure response characteristics in chamber group under the disturbance influence are monitored and numerically analyzed. …”
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Study on the Constant Resistance Coupling Support Technology for Rock Column at the Intersection Point of Deep Soft Rock Large Section Roadway: A Case Study in China by Huichen Xu, Yong Zhang, Jinkun Yang, Jiangbing Li, Xiaoming Sun, Cheng Xie

“…The field engineering practice and field monitoring data show that the dual-control constant resistance coupling support control technology has a good control effect on the deformation of the rock column at the large cross section intersection of the deep soft rock roadway and can be effectively used in the engineering practice.…”
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Study on dynamic mechanical properties of frozen weakly cemented rock under lateral constraint by Weiyu Li, Weiyu Li, Shizheng Fang, Ye Zhu, Guangming Li

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Macroscopic and microscopic characteristics of nanosilica sol-based composite grout in sealing fractured argillaceous rock: A comparative study with silica sol and cement slurry by Zhe Xiang, Nong Zhang, Dongjiang Pan, Zhengzheng Xie, Peng Wang, Dongxu Liang

Subjects: “…Argillaceous soft rock…”
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Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers by Liang Chen, Shaowu Fan, Can Zhao, Lang Zhang, Zhiheng Cheng

“…In view of the lack of soft rock fracture mechanics analysis and the improper calculation of the damage height of overburden rock caused by constant rock residual bulking coefficient to be used regularly in the analysis, in this paper, we constructed a fracture model of soft and hard strata by giving a quantitative classification criterion of soft and hard rocks and introducing a fracture failure criterion of soft rock strata and the space constraint condition of broken-expansion rock formation. …”
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Experimental Study on Load Bearing Characteristics of Steel Fiber Reinforced Concrete Lining in the Soft Surrounding Rock Tunnel by Guang-yao Cui, Jia-suo Qi, Dao-yuan Wang

“…Tunnels in soft rock with high ground stress will encounter the problem of large deformation of surrounding rock. …”
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Study on Mechanical Response and Stability Algorithm of Soft and Hard Rock Interbedded Slope Excavation by Qingyang Ren, Xin Meng

“…According to the relative position of the soft rock layer and the toe of the slope, the sliding surface of soft and hard rock interbedded slope can be divided into two types, namely, circular-straight sliding surface and circular-straight-circular sliding surface. …”
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Experimental Analysis on Compression Characteristics of Improved Phyllite Filler by ZHANG Yang

“…Soil compression is an important characteristic that affect the construction and operation of improved soft rock filling in mountainous ports.Through adding 5% cement to improve the weakly weathered phyllite filler,setting 4 kinds of rolling loads and 5 cycles of loading and unloading,and using an improved high-pressure lever consolidation instrument,this paper measures the soil strain,compaction and porosity ratio under different stress states,and specifies the change law of compression modulus and resilience modulus during loading and unloading process.The test results shows that:The deformation of the modified phyllite filler mainly occurs in the first loading process,and it increases significantly with the increase of the rolling load.The porosity ratio curve shows a concave shape with the increased cycles of loading and unloading.When the rolling load is 100 kPa,the curve of porosity ratio is nonlinear with the increased cycles of loading and unloading;when the rolling load is 200 kPa,the compression of the soil changes from medium to low with the increase of compaction cycles.At this time,the modulus of resilience takes a minimum value.It is suggested that the 200 kPa roller compaction stress should be used as the first static compaction during the construction of improved soft rock filling in mountainous ports,which should be increased appropriately in the subsequent construction.…”
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Formation Mechanism and Stability Analysis of the Hejia Landslide by Hao Zhang, Zaiqiang Hu, Xingzhou Chen, Hongru Li

“…Through field investigation and analysis of regional geological conditions, it is concluded that Hejia landslide is a large-scale landslide, through long-term sliding-bending deformation; it is generated from the external hard rock with thick layers and sliding zone for layered soft rock; the formation mechanism of landslide is as follows: (1) high-steep and hard-soft layered slope is the slope structure condition that caused the large landslide; (2) the existence of thick soft rock belt provides material conditions for the formation of slip surface; (3) certain air conditions provide displacement space for the separation and disintegration of the sliding body, and the landslide is stable at present. …”
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A Theoretical Calculation Method of the Unsupported Span for the Shallow Tunnel in the Soft Stratum by Xiaoxu Tian, Zhanping Song, Guannan Zhou, Xiaowei Zhang

“…The unsupported span of the shallow buried tunnel in the soft rock stratum is a linear function of the support pressure. …”
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The study of mechanical properties and fracture evolution of coal-rock masses under hard roof-soft floor conditions by Jiajun Li, Yin Zhang, Chenchen Yang, Jiaqi Liu, Yu Zhou, Chunlin Li

“…Samples with higher soft rock strengths tend to exhibit brittle failure, while weaker samples show stress-softening behaviour. …”
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Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances by Peng Wang, Nong Zhang, Jiaguang Kan, Xingliang Xu, Guangzhen Cui

“…The deflection of the roadway roof and the extent of the plastic zone are negatively correlated with the distance from the soft rock layer to the roadway but positively correlated with the thickness of the soft rock layer. …”
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Comparative Analysis of Thermomechanical Properties and Thermal Damage Constitutive Models of Three Soft Sedimentary Rocks by Wenhua Zha, Weixing Shao, Suqin Yao, Qiang Chen, Denghong Chen

“…Uniaxial compression experiments were conducted on three kinds of soft rock-cement mixed specimens at 25°C～55°C multistage temperature in an environmental chamber. …”
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Study on Deformation Mechanism and Support Measures of Soft Surrounding Rock in Muzhailing Deep Tunnel by Zhigang Tao, Jindong Cao, Liu Yang, Aipeng Guo, Ruifeng Huang, Xiaojie Yang, Di Yuan, Lin Hou

“…The field monitoring results show that the new support system can well control the large soft rock deformation of Muzhailing tunnel (0.5 m). …”
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Recognition of Red-Bed Landslides over Eastern Sichuan through Remote Sensing and Field Investigations by Zhao Miao, Panpan Tang, Yong Zhang

“…Red-bed soft rock, characterized by the gentle slope, low intensity, and weak weathering resistance, is widely distributed over the Eastern Sichuan Province, China, threatening many lives of people, economy development, and urbanization progress. …”
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Analysis of Surrounding Rock Creep Effect on the Long-Term Stability of Tunnel Secondary Lining by Xiaoqian Zhang, Chengmin Wei, Heng Zhang

“…The secondary lining failure of deep buried soft rock tunnel often occurs, which is obviously related to the time factor. …”
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Mechanical damage and failure mechanisms of chlorite by molecular dynamics by Li Liu, Xinlong Li, Runqing Zhang, Ran Ji, Wenhao He, Huaizhong Shi, Zhongwei Huang, Yongxin Li, Gaojian Fan, Songqing Zhao

“…Chlorite schist, a layered soft rock with low strength and significant water-induced softening, poses challenges for deeply buried underground projects due to large deformations and collapse during excavation. …”
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Study on Supporting Protection of Tunnel Opening near a Rock Layer under Elastic Deformation of Surrounding Rock by Zhigang Jia, Yongsong Li

“…According to the monitoring results of the actual project, the deformation law of the soft rock section at the tunnel entrance is mastered. …”
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