滑坡是黄土丘陵沟壑区常见的重力侵蚀,降雨是黄土边坡失稳的主要诱因。为了研究持续降雨条件下黄土边坡的稳定性,采用人工降雨装置进行室外现场试验,测量土体含水率、密度、滑坡剪切带位置以及裂缝的发育等情况,并使用FLAC3D软件计算模拟持续降雨条件下裂缝发育对边坡稳定性的影响。结果表明:随着降雨历时的增加,黄土边坡土体的含水率逐渐增大,土体强度降低,而且自重增大,坡面冲蚀沟逐渐发育,坡脚出现滑塌,坡顶出现拉裂缝,裂缝加剧了降雨的集中入渗,使得裂缝周边土体强度快速降低,最终导致在降雨历时至308.8 h时发生滑坡,
马蓓青 +5 more
doaj
Influence characteristics of regional micrometeorology on macroscopic scale of external dump [PDF]
To study the relationship of external dump of opencast coal mine impacting on surrounding micrometeorological factors, and then provide the foundation acknowledge for the ecological restoration in mining area, the airflow movement and water distribution ...
Chendong LIU +7 more
core +1 more source
Analysis of high-position landslide characteristics based on multi-source remote sensing data:A case study of the Yanwo Village landslide in Rongshan Town, Lizhou District, Guangyuan City [PDF]
On October 6, 2021, a high-position landslide disaster occurred in Yanwo Village,Rongshan Town, Lizhou District, Guangyuan City,Sichuan Province, around 13: 00.
Dewei HE +3 more
core +1 more source
对高速公路边坡的调查结果表明,高速公路边坡的稳定性随坡度、坡长的增大而减小,随植物覆盖度的增大而加强,有护坡工程的边坡稳定性大于没有护坡工程的边坡;边坡的稳定性并随土壤硬度的变化而变化。在调查的基础上提出了增强边坡稳定性的措施。
杨喜田 董惠英
doaj +2 more sources
Mechanistic analysis of loess landslide reactivation in northern Shaanxi based on coupled numerical modeling of hydrological processes and stress strain evolution: A case study of the Erzhuangkelandslide in Yan’an [PDF]
The Erzhuangke landslide is a typical landslide affected by the rainy season. Rainfall changes the seepage pattern with the pre-existing landslide, weakening matric suction and soil shear strength, leading to the formation of tension cracks internally ...
Hui LIU +5 more
core +1 more source
Open-pit mine soft rock slope internal row tracking pressure side control engineering:A case study at the south side of the first mining area of Hesigewula south open-pit coal mine [PDF]
Slope stability control is crucial for safe and efficient coal mining in open-pit mines with soft rock. To address the challenge of stabilizing dip soft rock slope rock slopes, the treatment engineering of inner row tracking pressure side of dip soft ...
Dong WANG +6 more
core +1 more source
泾河下游南岸台塬边坡的滑坡灾害严重,本文中分析了滑坡的特征,通过计算边坡稳定性系数对台塬边坡进行了分类,对具有突发性和短期可变性的滑坡触发因素进行了分析,提出了滑坡治理的方法。研究结果表明,泾河下游南岸台塬边坡临界平衡边坡和不稳定边坡占80.8%,分布在西段和中段。滑坡发生的概率为多水年〉平水年〉少水年;年内夏雨集中的7月和秋雨集中的9月是易于发生滑坡的月份。灌溉期间的滑坡占68.8%,冬季发生的滑坡主要与灌溉有关。台塬区地下水位上升是诱发滑坡的根本原因,当地下水位上升与古土壤层重合时极易诱发滑坡 ...
桑广书, 冯利华, 商丽华
doaj +2 more sources
Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model [PDF]
The bench slope within an open-pit coal mine plays an important supporting role for coal resource production and transportation. The stability evaluation of the slope is of great significance in guiding continuous mining operations within the mine.
Lichun ZHAO +6 more
core +1 more source
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
core
Calculation of slope stability of fault-containing slopes under the action of cyclic blast vibration [PDF]
In order to accurately quantify and predict the evolution of slope stability of fault-containing slopes under the long-term effect of blasting vibration, and to realize the safe, efficient and sustainable mining of open-pit mines. Taking an open-pit mine
Dong WANG +3 more
core +1 more source

