机构

• 力学研究所 [1]
• 成都山地灾害与环境研... [1]
• 长春光学精密机械与物... [1]
• 武汉岩土力学研究所 [1]
• 沈阳自动化研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 会议论文 [3]
• 期刊论文 [2]

发表日期

• 2020 [1]
• 2011 [1]
• 2010 [2]
• 2003 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Groundwater-mud control and safety thickness of curtain grouting for the Junchang Tunnel: A case study 期刊论文  OAI收割 TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2020, 卷号: 103, 页码: 16 作者:  Liu, Jin-Quan;  Chen, Wei-Zhong;  Yuen, Ka-Veng;  Zhou, Xiao-Sheng   |  收藏  |  浏览/下载：31/0  |  提交时间：2021/05/25 Groundwater control  Weathered granite  Ground condition  Safety thickness  Field investigation   Numerical simulation of regional stress field under complex geological condition 会议论文  OAI收割 2011 International Conference on Civil Engineering and Transportation, ICCET 2011, Jinan, China, OCT 14-16, 2011 Wang TX; Zheng WH(郑文海); Liang SJ 收藏  |  浏览/下载：42/0  |  提交时间：2013/02/26 Civil engineering  Coal deposits  Lithology  Regression analysis  Statistics  Stratigraphy  Coal seams  Complex geological condition  Complex structure  Engineering applications  Fault types  Geo-stress field  Geological structures  Ground surfaces  Layer thickness  Measured data  Measured points  Numerical stimulations  Principal stress  Regional stress field  Regional structure  Stress magnitude  Surface fluctuation   Study on Landslide Apparent Coefficient of Friction and Block Coefficient Based on the Ground Conditions 期刊论文  OAI收割 DISASTER ADVANCES, 2010, 卷号: 3, 期号: 4, 页码: 86-90 作者:  Fan Xiao Yi;  Qiao Jian Ping 收藏  |  浏览/下载：17/0  |  提交时间：2013/07/05 apparent coefficient of friction  block coefficient  ground condition  landslide volume   Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Wang Z.;  Wang Z.;  Zhang L.;  Zhang L. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed)  under the condition of space environment and vibration  impact when satellite is launching  image resolution ratio will be descended because defocusing. For tridimensional mapping camera  principal point position and focal length variation of the camera affect positioning accuracy of ground target  conventional solution is under the condition of vacuum and focusing range  calibrate the position of CCD plane with code of photoelectric encoder  when the camera defocusing in orbit  the magnitude and direction of defocusing amount are obtained by photoelectric encoder  then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera  under the condition of space environment and vibration  impact when satellite is launching  if the camera focal length changes  above focusing method has been meaningless. Thus  the measuring and focusing method was put forward based on astigmation  a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane  refer to calibrated relation between the CCD plane poison and the asrigmation  the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane  experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.   Ground condition sensing of a snake-like robot 会议论文  OAI收割 IEEE International Conference on Robotics, Intelligent Systems and Signal Processing, Changsha, China, October 8-13, 2003 作者:  Lv Y(吕洋);  Ma SG(马书根);  Li B(李斌);  Chen L(陈丽) 收藏  |  浏览/下载：37/0  |  提交时间：2012/06/06 Snake-like robot has its unique locomotion mode and can change its locomotion form while the ground condition changed  to achieve the best velocity and efficiency. We first analyze the snake-like robot locomotion on different terrains simply  then point out the significance to sense the ground status that is the base of choosing different locomotion form on different ground. Last we use force sensors to distinguish the different ground status.