The existing problems of image data col ected in EIA work are analyzed.A workaround was proposed based on super low altitude aerial photography technology.Analyzed the various techniques, multi rotor UAV was selected as a platform of low altitude aerial photography.The decive has the advantages of convenient car-rying, flight stability and so on.The application results shown, based on the technology, that the information content of image more comprehensive, working more efficient and the evaluation results more objective and more credible.The quality of EIA was improv ed strongly by Aerial photography technology of Rotor UAV.

为研究西北地区750kV输电线路下三维工频磁场分布特征,根据悬链线方程建立计及气象参数和档距等参数的输电线路三维磁场计算模型.以官亭-兰州东Ⅱ输变电工程和哈密-安西输变电工程为例,检验模型和程序的正确性和可信性.在此基础上,给出了西北地区典型气象条件下三维工频磁场的分布特征,对比分析了各设计参数(气象条件和水平档距、导线对地高度、相间距离、导线类型及分裂数、分裂间距、单回导线布置形式和双回导线相序布置方式等)对工频磁场的影响.

Relying on power transmission and transformation project,a laboratory experiment was conducted to study the curing effectiveness of high strength and water stability earth consolidator(HEC) soil stabilizer applied to three typical soils in the Gobi Desert region.The influence factors for the curing effectiveness such as curing age and curing agent content were analyzed at the 1.5 MPa unconfined compressive strength.Results from the laboratory tests show that the curing effectiveness of the three soils meets design requirements when curing period is more than 7 days and hardener volume reaches 8% and above.The tests for mechanical properties,permeability performance and shrinkage performance indicate that all the performances of samples meet soil and water conservation requirements in transmission line project.