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Physical and mechanical properties and microstructures of submarine soils in the Yellow Sea

田壮才, Yihua Chang, Sichao Chen, Gengchen Wang, Yanhong Hu, Chuan Guo, Lei Jia, Lei Song, J

发布时间:2023-11-23

关键词:Physical and mechanical properties microstructures of submarine soils in the Yellow Sea

摘要:AbstractIn recent years, the exploration of seabed has been intensified, but the submarine soils of silt and sand in the Yellow Sea area have not been well investigated so far. In this study, the physical and mechanical properties of silt and sand from the Yellow Sea were measured using a direct shear apparatus and their microstructures were observed using a scanning electron microscope. The te...

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Development and application of novel high-efficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks

Maolin Tian, Shaojie Chen, Lijun Han, Hongtian Xiao

发布时间:2023-11-08

关键词:Development and application of novel highefficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks

摘要:1 INTRODUCTIONWith the increase of coal mining depth, both the stress and fracture condition of the surrounding rock increase. The deformation and the failure mechanism of roadway also become more complex under deep complex geo-stress. The high crustal stress and strong mine pressure can easily lead to the fracture of the roadway's surrounding rock (He, 2011; Li, Wang, et al., 2021; Li, Zhang, ...

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Mechanical responses of underground carriageway structures due to construction of metro tunnels beneath the existing structure: A case study

Xin Han, Fei Ye, Xingbo Han, Chao Ren, Jing Song, Ruliang Zhao

发布时间:2023-11-23

关键词:Mechanical responses of underground carriageway structures due to construction metro tunnels beneath the existing structure A case study

摘要:1 INTRODUCTIONDue to the convenience and efficiency of metro lines, increasingly more cities are planning and constructing new metro lines. Therefore, traversing of a new tunnel traverses around existing structures is becoming common, resulting in the formation of a structural system including tunnels, underground stations, building foundations, and so on (Chen et al., 2016; Guo, 2011; Huang et...

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Research on the design method for uniform wear of shield cutters in sand–pebble strata

张晋勋, 李博, Guihe Wang, Yusheng Jiang, Hua Jiang, Minglun Yin, Zhengyang Sun

发布时间:2023-11-15

关键词:Research on the design method for uniform wear of shield cutters in sandpebble strata

摘要:许多学者已对在砂卵石地层中使用盾构机进行掘进的过程中刀具的非均匀磨损特征进行了深入研究,提出刀盘边缘刀具存在过度磨损的问题,导致了频繁的停机和刀具更换。这一现象已经成为砂卵石地层长距离高效掘进的关键障碍。本文的研究结果对在高磨蚀地层中进行长距离盾构掘进的理论创新和设计施工具有启示作用。

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Exploring the combination of biochar-amended soil and automated irrigation technology for water regulation and preservation in green infrastructure

朱鸿鹄, Yuanxu Huang, Haihong Song, Jian Chen, Songlei Han, Tanwee Mazumder, Ankit Garg

发布时间:2023-11-23

关键词:Exploring the combination of biocharamended soil and automated irrigation technology for water regulation preservation in green infrastructure

摘要:1 INTRODUCTIONSoil water retention and permeability are essential properties for analyzing seepage and hence the stability of geotechnical engineering infrastructure. Various studies have promoted the use of biochar to enhance these properties. However, there is also a need to enhance the regulation of the water content in green infrastructure covers (i.e., landfill covers, slopes, etc.), which...

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