Experimental study on shear mechanical properties and damage evolution ofartificial structural plane under constant normal stiffness [PDF]
, 2023 To study the influence of asperity angle and normal stiffness on the shear mechanical properties of the structural plane, a direct shear test of the artificial structural plane with constant normal stiffness (CNS) was carried out using the self-developed
Feng JIAO +5 more
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Brief Analysis of the Development of Mechanical Research and Trends of Grouted Connection of Offshore Wind Turbine [PDF]
, 2023 [Introduction] The connection between offshore wind turbine foundation and superstructure is usually made by grouting. It is crucial to ensure the safety of the grouted connections, and the study of grouted connections is always a key and difficult point.
Kan LIAO, Ke CHEN, Li ZHANG
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Surface deformation field and fracture propagation mechanism of rock-like specimen with pre-existing fracture [PDF]
, 2023 Eastern coalfield goes into deep mining gradually in China. Fracture development rises greatly in surrounding rocks, increasing the difficulty in ground control under increased mining disturbance.
Bokai QIAO +3 more
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Study on mechanical properties of coal before and after flooding considering bedding direction [PDF]
, 2023 The weak bedding plane and the water-softening coal will lead to the decrease in mechanical properties, which has an important influence on the stability of underground reservoirs and the prevention and control of water inrush accidents in coal mine.
Huijie ZHAO +4 more
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Wildlife collection for scientific purposes
Conservation Biology, Volume 35, Issue 1, Page 5-11, February 2021., 2021 Abstract Illegal transfer of wildlife has 2 main purposes: trade and scientific research. Trade is the most common, whereas scientific research is much less common and unprofitable, yet still important. Biopiracy in science is often neglected despite that many researchers encounter it during their careers.
Caroline Fukushima +5 more
wiley +1 more source
Effect of calcium lignosulfonate on the deformation and failure characteristics of cementing stone and its modification mechanism [PDF]
, 2023 In the coalbed methane extraction of surface wells in the mining area, the mining of coal seam in working face will cause a significant disturbance to overlying rock layer, which in turn will lead to the deformation and damage of surface wells.
Quanle ZOU +4 more
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Failure test and strength model of high-porous low-cementitious waste backfilling material [PDF]
, 2023 In order to alleviate the shortage of underground aggregate sources and time cost of vibration and compaction during backfilling, a new type of high-porous low-cementitious waste backfilling material (HPLCM), which was composed of self-compacting slurry ...
Chunyang CUI +5 more
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Effect of post-peak cyclic load on mechanics and seepage characteristics of sandstone under different confining pressures [PDF]
, 2023 The mining disturbance causes the rock mass in a certain range of the coal seam floor to be in a post-peak state. Due to the excavation of adjacent roadways and the mining of coal seams, the post-peak rock mass undergoes a cyclic loading-unloading ...
Daqiang XU +7 more
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Experimental study on energy dissipation and failure characteristics of rock at depth under non-hydrostatic pressure condition [PDF]
, 2023 Deep buried rock is often in a non-hydrostatic initial ground stress field, and the different stress states lead to different rock response under dynamic loading.
Jun CHEN +4 more
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Jianzhu Gangjiegou Jinzhan, 2023 为研究不锈钢槽式预埋组件在剪力作用下的破坏模式和承载性能，完成了3组9个带混凝土基材的不锈钢槽式预埋组件试件受剪试验。试验结果表明，平行受剪工况下破坏模式为齿牙剪切破坏，垂直受剪工况下破坏模式为混凝土边缘破坏及槽道卷边受弯破坏。在试验的基础上，通过ABAQUS软件建立了有限元分析模型，并验证了模型的准确性。通过数值分析研究了齿牙尺寸、混凝土强度、边缘距离、锚件中心线间距及预埋槽道有效埋深等参数对极限承载力的影响。结果表明，平行受剪工况下，平齿型槽道的齿牙个数、宽度及厚度的增加均可提高极限承载力 ...
郑勇 +5 more
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