中国科学院机构知识库网格系统: 检索

Research on Monitoring the Speed of Glacier Terminus Movement Based on the Time-Series Interferometry of a Ground-Based Radar System 期刊论文 OAI收割
REMOTE SENSING, 2024, 卷号: 16, 期号: 21, 页码: 20
作者: Zhai, Limin; Ye, Qinghua; Liu, Yongqing; Liu, Shuyi; Jia, Yan

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收藏 | 浏览/下载：12/0 | 提交时间：2025/02/06

GB radar time-series interferometry TP movement at glacier terminus signal process

Largest scale successful real-time evacuation after the Wenchuan earthquake in China: lessons learned from the Zengda gully giant debris flow disaster 期刊论文 OAI收割
GEOMATICS NATURAL HAZARDS & RISK, 2022, 卷号: 13, 期号: 1, 页码: 19-34
作者: Hu, Guisheng; Huang, Hong; Chen, Ningsheng; Somos-Valenzuela, Marcelo; Yang, Zhiquan

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收藏 | 浏览/下载：38/0 | 提交时间：2022/01/27

Zengda gully debris flow dynamic characteristics formation and movement process real-time evacuation early warning mode

Hazard assessment of a catastrophic mine waste debris flow of Hou Gully, Shimian, China 期刊论文 OAI收割
ENGINEERING GEOLOGY, 2020, 卷号: 275, 页码: 105733
作者: Chang Ming; Liu Yang; Zhou Chao; Che Hongxiao

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收藏 | 浏览/下载：25/0 | 提交时间：2020/10/23

Mine waste debris flow Hou gully Movement process Numerical simulation Hazard assessment

An estimation model for the fragmentation properties of brittle rock block due to the impacts against an obstruction 期刊论文 OAI收割
Journal of Mountain Science, 2017, 卷号: 14, 期号: 6, 页码: 1161-1173
作者: HOU Tian-xing; XU Qiang; XIE Hong-qiang; XU Nu-wen; ZHOU Jia-wen

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收藏 | 浏览/下载：22/0 | 提交时间：2017/06/21

Rock Block Rock Fragmentation Rock Movement Process Crushing Work Ratio Average Fragment Size

Effects of model parameters, topography, and scale on the mass movement processes of debris avalanches using the discrete element method 期刊论文 OAI收割
ARABIAN JOURNAL OF GEOSCIENCES, 2016, 卷号: 9, 期号: 5, 页码: DOI:10.1007/s12517-016-2441-7
作者: Zhou, Jia-wen; Xu, Fu-gang; Guo, Chao-xu

收藏 | 浏览/下载：23/0 | 提交时间：2016/07/11

Debris avalanche Numerical simulation Discrete element method Mass movement Supplying process Impact factors

Characteristics of soil freeze-thaw cycles and their effects on water enrichment in the rhizosphere 期刊论文 OAI收割
GEODERMA, 2016, 卷号: 264, 页码: 132-139
作者: Wang Anzhi

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收藏 | 浏览/下载：23/0 | 提交时间：2019/06/04

Freeze-thaw Process Soil Moisture Movement Soil Temperature Semi-arid Sandy Land

Dynamic process analysis for the initiation and movement of the Donghekou landslide-debris flow triggered by the Wenchuan earthquake 期刊论文 OAI收割
JOURNAL OF ASIAN EARTH SCIENCES, 2013, 卷号: 76, 期号: S1, 页码: 70-84
作者: Zhou, Jia-wen; Cui, Peng; Yang, Xing-guo

收藏 | 浏览/下载：29/0 | 提交时间：2015/05/11

Wenchuan earthquake Landslide-debris flow Initiation time Mass movement Numerical simulation Dynamic process

A new method of measuring lead screw with dual-frequency laser interference (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Qi X.-D.

收藏 | 浏览/下载：38/0 | 提交时间：2013/03/25

A new optical structure of measuring lead screw with dual-frequency laser interferometer is proposed and a formula used quickly correcting Abbe error is deduced in this paper. In the process of testing lead screw Abbe error in the measured data can be real time compensated so that the measurement system which doesn't meet Abbe principle can achieve high measurement accuracy. In addition this method can also eliminate measurement error induced by axial movement of the measured lead screw. The experimental result shows that of the maximum residual error is only 0.48m within 300mm stroke after the maximum Abbe error 1.39m is corrected. This method effectively improves the measurement accuracy of lead screw. 2010 IEEE.

Scaling and analyzing the influence of fluid surface of fluid with nano-granular through speckle pattern experiment (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Wang X.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

An optical system with double beam interference system was designed to measure the movement of nano-particles in fluid with laser speckle technology. In order to investigate the influence of the scattering light generated from liquid surface on speckle patterns the liquid surface contour was dynamically detected by WYKO during nano-particle movement. The result demonstrates that the fluctuation of fluid surface is slight. Meanwhile in order to further analyze this effect a piece of ground glass was employed. The process of ground glass to be polished to optical glass was studied and tested continuously using WYKO and laser speckle technology. And then the speckle patterns generated from kerosene fluid surface were studied. By contrast the results show that the fluid surface is transparent to the measurement wavelength. The influence of the surface of fluid can be neglected. Furthermore the conclusion illustrates that laser speckle technique is an effective and reliable method to study the movement of nano-granular in fluid.

Method for the fabrication of isometric mesh on the concave of a spherical substrate (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China
作者: Feng X.-G.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

Metallic mesh has been widely used in electromagnetic interference windows. While the duty ratio of curved mesh equals to planar mesh' the theory of planar mesh may be applied to curved mesh according to equivalent-circuit model. So the idea that latitude lines intersect latitude lines to form isometric mesh on the concave of a sphere is put forward and the method of fabricating the mesh by concentric optical scan is introduced. The movement parts of equipment consist of an erection turning a horizontal dividing and a pitching dividing spindle. Firstly a spherical substrate is fixed on the horizontal dividing spindle that has been set horizontally on the erect turning spindle the substrate revolves around the axis of the erect spindle the tube of object lens that is fixed on the pitching dividing spindle steps at pitching direction and a revolving circuit of the substrate corresponds to a step of the tube. Gradually a set of latitude lines is attained. Afterward the substrate makes a quarter turn around the horizontal spindle another orientation latitude lines are also gained. Thus the isometric mesh on the concave of a spherical substrate is gained. The process comprises surface cleaning coating photoresist laser direct writing development evaporated film dissolving photoresist and plating. The fabricated spherical mesh has a line width of 7 m and a period of 600m. Experiment shows that infrared transmission and electromagnetism shield efficiency of the metallic mesh are relatively consistent with theoretical value.