三维激光扫描测量在汶川地震后都汶公路快速抢通中的应用
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摘要
都(江堰)汶(川)公路是一条高等级山区公路,同时是连接都江堰与汶川县城的主要干道,溯岷江而北上,全长108km。强烈的汶川地震导致了公路两侧大量崩塌、滑坡等地质灾害发生,严重阻断了交通生命线,由于公路沿线河谷狭窄、山高坡陡、表部岩石破碎,又适逢雨季来临,崩塌、滑坡、泥石流等次生地质灾害为震后抢险救灾及地质调查工作带来极大挑战。本文通过三维激光扫描测量技术在都汶公路快速抢通中的应用,讨论其在抢险救灾快速反应中与传统地质调查方法相结合的适用性与可行性,从中不难看出该项技术具有精度高、速度快、真实反映原型并能快速提取相关信息,其势必成为传统地质调查方法的有益补充。
The Du-Wen highway is a highway of high level standards in Western Sichuan mountainous areas to the Jiu Zaigou National Park.Also,it is the trunk road linking Dujingyan City and Wenchuan county town.The Du-Wen highway follows the Minjing river to the north and its length is 108 km.The road was totally destroyed by a great number of geohazards such as rock collapses and landslides during the Wenchuan Earthquake.The river valleys are very narrow and have high steep slopes with loose and cracked mountainous geomaterials.Considering the importance of the road to the rescue of disasters and reconstruction of the destroyed areas after the earthquake,it must be repaired in a very short period of time.This was a big challenge because there were so many landsides and the rain season was coming.Therefore,3D-scanning technique was used to help the landform survey and slope stability evaluation.This paper analyzes the applicability and feasibility of the 3D laser scanning survey on this occasion and discusses the approach combined with traditional survey methods.The practices show that it had the characters of high precision,fast operation and high efficient.I It solved many difficult problems during the quickly repairing period 3 months.A general procedure is put forward to apply this technique to quick slope survey and investigation on urgent occasions.
The Du-Wen highway is a highway of high level standards in Western Sichuan mountainous areas to the Jiu Zaigou National Park.Also,it is the trunk road linking Dujingyan City and Wenchuan county town.The Du-Wen highway follows the Minjing river to the north and its length is 108 km.The road was totally destroyed by a great number of geohazards such as rock collapses and landslides during the Wenchuan Earthquake.The river valleys are very narrow and have high steep slopes with loose and cracked mountainous geomaterials.Considering the importance of the road to the rescue of disasters and reconstruction of the destroyed areas after the earthquake,it must be repaired in a very short period of time.This was a big challenge because there were so many landsides and the rain season was coming.Therefore,3D-scanning technique was used to help the landform survey and slope stability evaluation.This paper analyzes the applicability and feasibility of the 3D laser scanning survey on this occasion and discusses the approach combined with traditional survey methods.The practices show that it had the characters of high precision,fast operation and high efficient.I It solved many difficult problems during the quickly repairing period 3 months.A general procedure is put forward to apply this technique to quick slope survey and investigation on urgent occasions.
引文
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[8]杨主恩,邓志辉等.汶川8级强震极震区破坏情况与烈度[J].地震地质,2008,30(2):3493`54.Yang Zhu′en,Deng Zhihui,et al..Some destruction and itsseism ic intensity in meizoseismal region of Wenchuan Earthquakewith magnitude 8,Sichuan,China.Seismology and Geology,2008,30(2):349`354.
[9]马保起,张世民等.汶川8.0级地震地表破裂带[J].第四纪研究,2008,28(4):513~517.Ma Baoqi,Zhang Shimin,et al..The surface rupture of Wen-chuan Earthquake(Ms 8.0).Quaternary Sciences,2008,28(4):513~517.
[2]董秀军,黄润秋.三维激光扫描技术在高陡边坡地质调查中的应用[J].岩石力学与工程学报,2006,(增刊2),2006,(179):3629~3635.Dong Xiujun,Huang Runqiu.Application of 3D laser scanningtechnology to geologicsurvey of high and steep slope.Chinese Jour-nal of Rock Mechanics and Engineering,2006,(179):3629~3635.
[4]崔鹏,韦方强等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,(26):280~282.Cui Peng,Wei Fangqiang,et al..Mounta in disasters induced bythe earthquake of May 12 in Wenchuan and the disasters mitiga-tion.Journal Fmountain Science,2008,(26):280~282.
[5]董树文,张岳桥等.四川汶川Ms 8.0地震地表破裂构造初步调查与发震背景分析[J].地球学报,2008,6(3):392~396.Dong Shuwen,Zhang Yueqiao,et al..Surface rupture investigation of the Wenchuan Ms 810 earthquake of May 12 th,2008,West Sichuan,and ana lysis of its occurrence setting.Acta Geo-scientica Sinica,2008,6(3):392~396.
[6]殷跃平.汶川8级地震地质灾害研究[J].工程地质学报,2008,16(3):433~444.Yin Yueping.Researches on the geo-hazards triggered by Wen-chuan Earthquake,Sichuan.Journal of Engineering Geology,2008,16(3):433~444.
[7]陶和平,刘斌涛等.遥感在重大自然灾害监测中的应用前景—以5.12汶川地震为例[J].山地学报,2008,26(3):276~279.Tao Heping,Liu Bintao,et al..Natural hazards monitoring usingremote sensing—a case study of 5.12 Wenchuan Earthquake.Journal of Mountain Science,2008,26(3):276~279.
[8]杨主恩,邓志辉等.汶川8级强震极震区破坏情况与烈度[J].地震地质,2008,30(2):3493`54.Yang Zhu′en,Deng Zhihui,et al..Some destruction and itsseism ic intensity in meizoseismal region of Wenchuan Earthquakewith magnitude 8,Sichuan,China.Seismology and Geology,2008,30(2):349`354.
[9]马保起,张世民等.汶川8.0级地震地表破裂带[J].第四纪研究,2008,28(4):513~517.Ma Baoqi,Zhang Shimin,et al..The surface rupture of Wen-chuan Earthquake(Ms 8.0).Quaternary Sciences,2008,28(4):513~517.
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