Research on the Penetration of Spudcan Foundation for Mobile Jack-Up Platform [PDF]
, 2023 [Introduction] The spudcan foundation is the key structure of the mobile jack-up platform, which displaces surrounding soil during its penetrating installation.
Bo LIU, Donghua LIU, Zehua PAN
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Study on synergistic water-resisting stability of upper and lower soil layers and bedrock layer in shallow coal seam group [PDF]
, 2023 The roof water inrush of shallow buried coal seam is caused by the water flowing fractured zone through the aquifuge. With the downward mining of coal seam group, the mechanism of synergistic water isolation between soil layer and bedrock layer needs to ...
Haifei LIN +6 more
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, 1994 根据传统的Koch曲线;我们建立了节理剖面的理论分形模型来模拟节理剖面的粗糙性。由这个模型;节理的分形维数D可以直接由两个统计参数L*和h*(这里L*和h*分别为节理粗糙度的平均基长和平均高度)来估计;即 D=log4/log[2(1+costg~(-1)(2h*/L*))]。 这个分形维数很强地相关于岩石节理粗糙系数(JRC)值: JRC=85.2671(D-1)~(0.5679 ...
W.G.Pariseau, 谢和平
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Study on the Influence of Window Opening Forms of Single-Sided Ventilation Room on Indoor Wind Environment in Xiamen Area [PDF]
, 2017 针对厦门地区的气候特征及自然通风条件,对该地区建筑中有代表性的单侧通风房间进行简化抽象,得到五种不同通风开口形式的单侧通风物理模型,并加入不同楼; 层高度这一变量,运用CFD方法对其进行模拟研究。通过分析模拟结果得出,楼层高度可影响进入室内的风速、方向以及室内风场的分布,在单侧通风模型迎风面; 的竖向增设通风开口可在局部或整体上提高室内通风效果并且可以增强地面除潮和室内采光效果,但仍需从构造上解决此类开口形式的防水等问题。Based on the climatic characteristics and
石峰, 詹学渊
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Stochastic discrete element modelling of rough particles-a random normal interaction law [PDF]
, 2016 Particles are assumed smooth in classical discrete element modelling, but real particles have random rough surfaces which may influence their mechanical properties.
Yuntian Feng
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Determination method for horizontal load-bearing capacity of pile group for large LNG tank [PDF]
Objective The pile group foundation for large LNG tanks is subjected to relatively large horizontal forces under two seismic conditions: Operating Basis Earthquake (OBE) signifying a 10% probability of exceedance within a 50-year period and Safe Shutdown
Chengguo WEI +4 more
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Influence of structural surface roughness on the strength of layered fill bodies based on PFC2D [PDF]
The stratified structure of underground backfill can reduce the overall physical performance, potentially causing safety issues during mining operations.
Huazhe JIAO +8 more
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Strength degradation of soft interlayer under dry-wet cycles based on 3D printing technology [PDF]
Soft interlayers are critical geological formations that significantly impact the stability of slopes in water and hydropower engineering projects. This study investigated the shear mechanical characteristics and failure mechanism of the soft interlayer ...
Hao LIU, Lei LU, Wen ZHANG
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, 2008 中文摘要: 小波变换可以很好解决时间分辨率同频率分辨率之间的矛盾, 具有很好的时频特性。在环境变化相对平稳和主要噪声源预知的情况下, 用仪器同时测量需测信号和已知信号。用本文提供的方法, 算出此环境下已知信号中的噪声方差。再用它去滤除另一路信号中的噪声。实验表明 ...
李军, 蔡建立
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Systematic protection and restoration of water bodies in collapse areas based on surface runoff regulation [PDF]
In order to solve the problems of surface runoff disorder, poor water connectivity, and weak hydrodynamic water circulation capacity in high groundwater level mining areas in the east, and to reduce the non-point source pollution and point source ...
Dong GUO +5 more
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