Areal distribution of large-scale landslides along highway corridors in central Nepal
Areal distribution of large-scale landslides along highway corridors in central Nepal
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DOI：
10.1080/17499518.2012.743377
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发表时间：
2013-01-01
影响因子：
4.8
通讯作者：
Inagaki, Hideki
中科院分区：
文献类型：
--
作者：
Bhandary, Netra Prakash;Yatabe, Ryuichi;Inagaki, Hideki
山体滑坡是尼泊尔最常见的自然灾害。因此，尼泊尔山体滑坡的科学研究已经进行了数年，但在预防山体滑坡和减轻灾害损失方面尚未取得重大成果。由于处理滑坡的一个重要方面是根据地质和地貌构造了解滑坡的分布模式，因此本文解决了这些问题，并试图呈现尼泊尔中部主要高速公路沿线的大规模滑坡分布情景。通过航空摄影、地形图和现场核查等手段进行滑坡测绘，了解到以下几点：（1）靠近构造逆冲区域，大型滑坡分布较为密集； (2)板岩带和千枚岩带滑坡分布比例较大; (3)平均坡角27～36度左右的地形，大规模滑坡分布较密集。
Landslides are the most frequent natural disaster in Nepal. As such, the scientific study of the Nepal landslides has been in progress for several years, but no significant achievement has been made in preventing landslides and mitigating disaster damage yet. As one important aspect of dealing with landslides is understanding their distribution pattern based on geological and geomorphological formations, this paper addresses these issues, and attempts to present a scenario of large-scale landslide distribution along the road corridors of major highways in central Nepal. As a result of landslide mapping using aerial photographs, topographical maps and field verification, the following points were understood: (1) the distribution of large-scale landslides is relatively dense over the area close to tectonic thrusts; (2) slate and phyllite zones have a greater ratio of landslide distribution; and (3) topographies with a mean slope angle of about 27-36 degrees have denser distribution of large-scale landslides.