Results 71 to 80 of about 1,541 (191)

应用GPS观测滑坡变形的结果分析

open access: yesShuitu Baochi Xuebao, 2000
应用GPS观测滑坡变形在我国逐渐开展,这项技术的实用性如何目前尚处在探索研究阶段。通过对四川省雅安市峡口滑坡的GPS观测结果分析,讨论了滑坡变形的成因及GPS观测技术的可靠性问题。分析结果认为,GPS观测滑坡具有广泛的应用价值。
乔建平 陈永波
doaj   +2 more sources

Study on rockfall migration and fragmentation characteristics considering initial motion states [PDF]

open access: yes
High-altitude rockfalls typically exhibit significant falling heights and high potential energy, resulting in pronounced dynamic fragmentation effects during motion.
Aiguo XING   +5 more
core   +1 more source

湖北低山丘陵区侵蚀泥沙颗粒特征及其与地形因子的关系

open access: yesShuitu Baochi Xuebao, 2021
坡面地形变化是影响侵蚀泥沙颗粒特征的重要因素,深入理解地形因子与侵蚀泥沙颗粒粒径组成及分选特征的关系是研究坡面土壤侵蚀动力学的基础。采用野外降雨试验和粒径分析试验,结合ArcGIS系统识别和提取得到地形因子数据,研究低山丘陵地区侵蚀泥沙颗粒特征及其与地形因子的关系。结果表明:(1)在试验条件下,侵蚀泥沙中黏粒和粉粒总含量远高于砂粒,粗颗粒含量与坡度因子呈显著正相关关系 ...
朱方方   +3 more
doaj  

Bank collapse-landslide failure mechanism of typical reverse rock bank slope in Three Gorges Reservoir area [PDF]

open access: yes
At present, most of the reverse rock slope toppling instability failure is interpreted as a progressive overall instability failure controlled by dip angle and structural plane. However, the phenomenon of leading edge collapse is common in some reservoir
Bolin HUANG   +4 more
core   +1 more source

西安地区滑坡特征及其预报研究

open access: yesShuitu Baochi Xuebao, 1994
根据对西安地区滑坡的测绘、试验分析、长期监测、模型观测、计算分析、得到了该区地形、地下作用的规律,滑坡蠕变规律,滑坡表面与体内形变规律,以及滑动时间规律。并提出了6种新的预报方法,实践证明是可用的。
宋克强 袁继国
doaj   +2 more sources

河谷岸坡地形叠加浅表波阻抗比动力响应规律的数值模拟

open access: yesDizhen xuebao
强震条件下地形和岩体物理力学性质的差异会使边坡表现出不同的动力响应特性。为分析河谷岸坡坡度变化与浅表层介质波阻抗变化下的动力响应规律,设定左岸坡度为45°、右岸坡度分别为30°,45°和60°的直线型河谷岸坡模型,同时考虑六种浅表层波阻抗比n为1,1.5,2,2.5,3和3.5,基于离散元软件UDEC对河谷岸坡进行了动力分析。结果表明:① 浅表波阻抗层显著增强了边坡的动力响应,并在坡高1/4以上的坡面有较强体现;② 右岸坡度变化会引起左岸边坡动力响应差异 ...
Wanting Zhang   +4 more
doaj   +1 more source

考虑参数旋转各向异性空间变异性的边坡大变形概率分析

open access: yesEarth Science-Journal of China University of Geosciences, 2023
Leilei Liu   +5 more
semanticscholar   +1 more source

Stability of dangerous rockmasses and prediction of rockfall trajectory: A case study at Wansui Mountain in Ganzi County of Sichuan Province [PDF]

open access: yes
The hazardous rock zone on the Wansui Mountain slope in Ganzi Town, Ganzi County, has experienced frequent rockfalls over the years, posing a serious threat to the lives and property of residents below.
Youyi ZHANG, Yunjun WANG, Yuyuan WANG
core   +1 more source

坡长和雨强对氮素流失影响的模拟降雨试验研究

open access: yesShuitu Baochi Xuebao, 2017
为研究氮素的流失特征,探索坡长和降雨强度对氮素流失的影响,选定坡长(2,3,4,5 m)和降雨雨强(0.65,0.69,0.83,0.85,1.01,1.20,1.37,1.54,1.68,1.80 mm/min)作为可变因素,在红壤裸坡上进行室内人工模拟降雨试验。结果表明:(1)坡面径流中各形态氮素流失随时间推移基本趋势为降雨初期径流携带氮素的浓度大,随后氮素浓度下降,至20 min左右下降趋势变缓,最终径流中同一形态氮素的浓度趋于一致。(2)坡长一定时 ...
邬燕虹   +4 more
doaj  

Cold water anomalies in the middle layer of the northern Taiwan Strait in spring:a numerical approach [PDF]

open access: yes, 2017
台湾海峡位于福建和台湾之间,为一狭长水道,在南海和东海水体交换过程中起着重要作用。海峡内部的水团成分多样,海流情况多变,对沿岸生态,经济等方面具有十分重要的影响。2015年国家基金春季台湾海峡共享航次在海峡北部观测到了中层冷水的现象,在观测断面的中层水体表现为较表层及底层低的温度。本文通过基于ROMS的台湾海峡业务化预报系统(TFOR)模拟台湾海峡及周边的水文状况,并采用热通量校正的方法对模式的温度模拟进行同化,使其模拟的温度更加符合实际观测值,之后将其结果应用于春季台湾海峡北部中层冷水异常的研究 ...
傅军
core  

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