随着科技水平的不断提高,无人机倾斜摄影技术逐步发展完善,在测绘遥感领域得到广泛应用.科学应用无人机倾斜摄影技术能够获正射影像和三维模型,这种新型测绘手段在城市管理、国土规划、土地确权、大比例尺地形图测制等领域已经广泛应用.本文介绍了无人机倾斜摄影系统的组成部分和高原环境对无人机的影响,探讨无人机倾斜摄影测量技术在高原地质灾害调查中的应用分析,并提出无人机倾斜摄影测量地质灾害调查实践过程中需要注意的事项.

Because of the impact of earthquake,glacial slides,ice avalanches,landslides and debris flows which were located in the upstream of glacial lakes would flow into the lakes,and the shock wave or heading up made ice dams or moraine dams collapsed suddenly,leading to the glacial lakes outburst quickly and causing floods or flood mudslides.By combining Landsat-8 remote sensing images and using the method of artificial interpretation, glacial lake data in Nepal earthquake affected zones before the earthquake occurred on April 25,2015 were reconstructed,which provided important data support for China and Nepal earthquake relief.Then using the his-tory remote sensing images to extract glacial lakes data before the earthquake,making geospatial analysis of the history glacial lake data and the newest data,calculating area change and length change of the glacial lakes, finally combining the data of the seismic peak ground acceleration data of Nepal earthquake occurred on April 25,2015,the potentially dangerous glacial lakes are identified.The results show that there were 1 847 glacial lakes with area more than 0.02 km2 in the study areas,with a total area of 263.18 km2,including 87 rapidly expanding glacial lakes and 49 potentially dangerous glacial lakes in the zones affected the earthquake;these potentially dangerous glacial lakes should be paid more attentions to.

目的探讨以改良的血管腔内激光治疗为主要手段的综合外科治疗下肢浅静脉曲张并血栓形成的临床疗效。方法对2007年8月～2010年12月收治的196例下肢浅静脉曲张并血栓形成,彩超显示血栓在浅静脉大腿中段以下的患者,采取大隐静脉高位结扎曲张静脉腔内激光闭锁,部分血栓取出等综合性微创外科治疗。结果 196例均得到回访,随访时间6～72月。196例完全愈合,无一例发生肺栓塞。结论下肢浅静脉曲张并血栓形成可用改良的血管腔内激光治疗,适用于血栓在大腿中段以下,血栓相对稳定,向心进展较慢者。