Powerchina Northwest Engineering Corporation Limited

Chinese Academy of Sciences

China Institute of Water Resources and Hydropower Research

Heng Zhou

Tong Zhao

Ying Guo

Shuwen Yang

Zufeng Li

Shu Yu

Haixing Shang

Fan Yue

Zuyu Chen

Zhixuan Miao

Penghai Yin

Guangjun Yi

Jianqin Wang

Zhaohui Xia

Naichang Zhang

Yongxiang Cao

Gangyi Zhao

Ziyu Lv

Jianwei Hao

Ruixue Li

Xiaomei Kou

ShengXue Ke

Xianyuan Liu

Qun Zhang

Wei Ren

A phthalonitrile-based composite material has a thermally conductive filler. The thermally conductive filler is distributed in the phthalonitrile matrix resin, or the thermally conductive filler is distributed in a thermally conductive filler layer at least partially covering the surface of the phthalonitrile-based microspheres. The phthalonitrile-based composite material has good application prospects in the fields of heat conduction and heat conductive insulation.

Phthalonitrile-based composite material, preparation method therefor and use thereof

A method for monitoring and safety evaluation of a dam body defect of a check dam is provided, including steps of: obtaining multi-source remote sensing data, unmanned aerial vehicle (UAV) data, ground monitoring data and sensing images through a three-dimensional data network; identifying the sensing images through an R-CNN algorithm and a Fast R-CNN based on the UAV data and check dam body database to determine check dams having defects and types of defects, defect data and position data; performing classification statistics of the check dams having defects according to the types of defects; building a three-dimensional model of the dam body safety evaluation standards for check dams after classification according to the position data and the ground monitoring data; input the defect data in a check dam safety performance evaluation module to obtain simulation data; and completing the evaluation according to the simulation data and the three-dimensional model.

Method and system for monitoring and safety evaluation of dam body defect of check dam

A GNSS emergency monitoring error suppression method for an alpine canyon complex environment is provided. Through three steps of GNSS optimization design of the alpine canyon complex environment, derived error suppression of emergency monitoring criteria in the alpine canyon complex environment, and error suppression measurement and result correction, GNSS measurement errors in the alpine canyons can be effectively suppressed. Through improving measurement accuracy, GNSS technology can be widely applied to the alpine canyons, outstanding advantages of high efficiency and high accuracy in a coordinate transmission process of the GNSS technology are brought into full play, and a cost is effectively reduced. Meanwhile, by processing the errors of the emergency monitoring criteria, it is possible to protect workers from on-site operation risks.

GNSS emergency monitoring error suppression method for alpine canyon complex environment

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Beijing, China

Heng Zhou