Seismic Responses and Damage Mechanisms of Deep-Buried Underground Powerhouse in Layered Rock Mass by Meng Zhao, Ming Xiao, Juntao Chen, Hancheng Jin

“…After considering the dynamic contact, the obvious seismic deterioration effect and interlaminar dislocation displacement occur between soft and hard rock, and the sidewalls suffer more severe deterioration degree than the top arch. …”
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Improving the Stability of Subsurface Structures in Deep Metal Mines by Stress and Energy Adjustment: A Case Study by Huanxin Liu, Xingquan Liu, Zhuoying Tan, Yang Liu, Guilin Li

“…In deep hard-rock mines, the failure of subsurface structures (e.g., tunnels, stopes, and shafts) has been a significant problem affecting mining safety due to the high-stress environment. …”
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Assessment of groundwater potential zones using geospatial techniques in Mangalore Taluk, Dakshina Kannada District, Karnataka, India by Eka Putri Elsa, Hamidi Masyhuri, M Shet Suraj, S A Swapna

“…Groundwater occurs in weathered or semi-weathered/fractured layers in hard-rock areas whose thickness varies, generally, from 5m to 20m. …”
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Analysis on the Difference of Energy Evolution in the Process of Energy Storage Failure of Strong Coal Rush Rock Samples under Different Adaptive Modification Regulation Measures by Fangfang Zhang

“…The results show that different modification regulation measures can effectively change the physical and mechanical parameters of target rock samples and realize “hard rock softening or soft rock hardening.” Samples under different modification measures are classified as initial consolidation stage, elastic stage, stage of plastic deformation, yield failure stage, and late stage, the energy evolution is roughly the same as the sample complete natural condition, but the yield failure stage and the destruction of late stage have an obvious difference, which provides favorable conditions for impact ground pressure to prevent. …”
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Research on Mechanism of Rock Burst in Key Working Faces under Thick Magmatite in Deep Mine by WeiLi Yang, ZhiZeng Zhang, QuanDe Wei, XiaoCheng Qu, JingLin Wen

“…The rock burst of key working faces under the thick hard rock in deep mine significantly threatens the mining safety of deep mine. …”
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Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation by Xiaojie Yang, Chaowen Hu, Manchao He, Haohao Wang, Yubo Zhou, Xiaoyu Liu, Enze Zhen, Xingen Ma

“…Through presplitting blasting the roadway hard rock layer, the stress propagation path is cut off, and the surrounding rock stress environment of the roadway is improved, to achieve the purpose of controlling the deformation of the roadway caused by stress. …”
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Optimizing water resource management in tropical drought-prone regions through hybrid MCDM techniques: A water-stress mapping approach by Suman Mukherjee, Suman Paul, Subhasis Bhattacharya, Aznarul Islam, Sadik Mahammad, Edris Alam

“…Groundwater resources of the region are also limited due to the composition of hard rock geology and the low yield prospects of hard aquifers. …”
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Key Strata Inducing Dynamic Disasters Based on Energy Condition: Criterion and Application by Chao Xu, Gang Yang, Haoshi Sun, Liangliang Qin, Kai Wang, Bo Ren, Zhijie Wen

“…The thick and hard rock strata (THRS) exist widely in coal measure strata, which control the movements of overlying rock strata in stopes. …”
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A Study on Excavation Characteristics of Tunnel with Upper-Soft Lower-Hard Stratum by Jun Feng, Hui-juan Yang, Yu Zhang

“…The bending moment of the lining produced by the positive benching method was far less than that of the other two methods. (3) Due to the difference in lithology, the stress of the tunnel lining in the thick upper “soft” and “hard” strata was mainly concentrated on the upper soft rock area, while the stress in the lower hard rock area was relatively small, and the lining stress value generated using the three excavation methods was relatively large. …”
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Research on the evolution and prediction of the heights of water-conducting fracture zones in overlying rocks during layered mining of extremely thick coal seams by MENG Hailun, CHENG Xianggang, QIAO Wei

“…The research results showed that: ① During layered mining of extremely thick coal seams, the hard rock strata and inferior key strata within the capping range exhibited a hinged structure, and the overall deformation and failure of the overlying rocks presented an arched structure. ② The impact of mining activities caused the roof overlying rocks to fracture and collapse, with horizontal fractures continuously developing and vertical fractures extending upwards. …”
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Experimental study on the strengthening mechanism of carbon fiber-reinforced sand powder 3D-printed rock-like materials by Lishuai Jiang, Xin He, Ye Zhao, Pimao Li, Yang Zhao, Zongke Wang, Dingrui Guo, Qi Gu

“…However, its limitations in the strength and stiffness of the printed materials hinder its potential for hard rock simulation. Carbon fiber, which is known for its high modulus and tensile strength, is widely used in concrete reinforcement. …”
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Bridging Land and Sea: Geophysical insights into coastal karstic groundwater dynamics, freshwater plumes and saltwater intrusions in the urban regions of Antalya (Türkiye) by Jasper J.L. Hoffmann, Ercan Erkul, Simon Fischer, Irfan Yolcubal, Pritam Yogeshwar, Wolfgang Rabbel, Amir Haroon, Şerif Bariş, Ahmet Şener, Jens Schneider von Deimling, Ismail Kaplanvural, Bülent Tezkan, Elif Şen, Felix Gross, Ertan Pekşen, Elnur Gasimov, Aaron Micallef

“…The springs create distinct salinity anomalies in the water column and remove the sediment cover from the carbonate aquifer, exposing hard rock on the seafloor and creating different habitats. …”
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A Study on the Mechanisms of Tension-Shear Failure and the Estimation Model for Key Parameters of Free-Face-Assisted Rock Breaking by Chongmao Tang

“…One huge challenge TBM construction face is to improve the breaking ability of cutters for hard rocks, making the studies on new rock breaking approaches for cutters very important. …”
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Application of improved and efficient image repair algorithm in rock damage experimental research by Mingzhe Xu, Xianyin Qi, Diandong Geng

“…To address this issue, this paper focuses on the restoration of image data acquired through digital image technology, leveraging deep learning techniques, and using soft and hard rocks made of similar materials as research subjects, an improved Incremental Transformer image algorithm is employed to repair distorted or missing strain nephograms during uniaxial compression experiments. …”
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On the Experimental Determination of Poisson’s Ratio for Intact Rocks and Its Variation as Deformation Develops by Lu Dong, Hongfa Xu, Pengxian Fan, Zhichou Wu

“…Thus, the average Poisson’s ratio is a better index than the secant Poisson’s ratio in describing the relationship between axial and lateral strains of hard rocks. The determination of Poisson’s ratio of soft rocks needs further investigation because Poisson’s ratio tends to exceed the theoretical limit in relatively low stress levels. …”
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Influence of drilling incidence angle on the drilling force distribution of pneumatic impactor by Dongfang Li, Zengyang Huang, Haibin Lin, Huiyi Zhu, Wentao Fu, Yujuan Deng

“…Abstract Pneumatic impactor is widely used in the drilling process of various medium and high hard rocks with poor drill ability. Currently, there is relatively little analysis on the impact of the inclination of the rock surface during the drilling process on the drilling efficiency and excavation capability of pneumatic impactors. …”
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