Results 11 to 20 of about 1,499 (122)
Evaluation of Collapse Susceptibility Based on a Contribution Rate Model [PDF]
, 2022 [Objective] The spatial database of geological disaster field survey was conducted to analyze the formation mechanism and failure mode of collapse in the area where granite weathered residual soil was developed, to explore the contribution rate of ...
Cai Junjian +4 more
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Shuitu Baochi Xuebao, 2020 针对干湿循环影响下崩岗土体崩壁出现失稳等问题，通过开展室内单轴抗拉试验，研究了湖北通城地区不同干湿循环作用下崩岗土体抗拉强度的变化规律。结果表明：崩岗土体的抗拉强度随着干湿循环次数的增加逐渐衰减，最后逐渐趋于稳定，且不同层次土壤的抗拉强度衰减主要集中在前3个干湿循环周期，表土层、红土层、过渡层和砂土层抗拉强度衰减比例分别达到90%，82%，83%，90%，且不同层次土壤的抗拉强度总体表现为过渡层 > 红土层 > 表土层 > 砂土层。并通过考虑崩岗不同层次土体深度和干湿循环次数的共同影响 ...
冯延云 +3 more
doaj
Macro-micro Evolution Characteristic Function of Solidified Loess under the Effects of Dry-wet Cycles [PDF]
[Objective] To reveal the durability of solidified loess slope protection in long-term service. [Methods] Under the condition of dry-wet cycles, direct shear, permeability mechanical tests of solidified loess were carried out to study the evolution law ...
CHANG Zhou +6 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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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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Mesostructure and strength characteristics of granite under freeze-thaw cycles based on CT scanning [PDF]
, 2023 Objective With the rapid increase in construction projects in the western regions in recent years, the impact of seasonal freeze-thaw cycles in the high-altitude areas of western China has become more pronounced.
CHEN Liang +8 more
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, 2019 为研究干湿循环对花岗岩残积土抗剪强度特性和抗剪强度参数的影响,分析花岗岩残积土边坡的稳定性,改进了常规的单元试验方法.以整个花岗岩残积土边坡为试验对象进行干湿循环模拟,在每次循环后直接在边坡坡面上切取花岗岩残积土试样进行直剪试验.在此基础上,利用有限元软件ABAQUS对一实际边坡进行了干湿循环的数值模拟,在每次循环模拟前对上一次模拟结果进行分析,将等效塑性应变较大区域的土体强度进行适当折减,分析每次循环后花岗岩残积土边坡的应力应变、稳定性以及塑性变形.试验结果表明:花岗岩残积土的抗剪强度随干湿循环次数 ...
于佳静, 张波, 王晖, 陈东霞
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China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
Shuitu Baochi Xuebao, 2023 为研究林火对滨海沙地森林生态系统碳循环的干扰作用,以尾巨桉防护林(Eucalyptus urophylla × Eucalyptus grandis)和木麻黄防护林(Casuarina equisetifolia)为研究对象,利用LI-8100土壤CO2通量全自动测量系统测定不同防护林火烧迹地和对照样地的土壤CO2通量,同时测定样地内土壤温湿度和土壤pH、全量碳氮和矿质氮含量,并分析不同林地土壤CO2通量与水热因子关系以及土壤理化特性的变化。结果表明:2种防护林火烧迹地土壤CO2通量均显著低于对照样地 ...
沈健 +4 more
doaj
Experimental study on optimizing ratio of EICP solution to reinforce red mudstone filler based on response surface method [PDF]
In order to explore the effects and mechanisms of the urease-induced calcium carbonate precipitation (EICP) technology on the solidification of red mudstone fillers, urease is extracted from soybean, and the ratio of EICP solution is optimized by the ...
YU Yunyan, GUO Qiuyue, CUI Wenhao, DING Xiaogang, DU Qianzhong, QI Guobin
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