西藏浪卡子至洛扎公路沿线的地质灾害

西藏浪卡子至洛扎公路是西藏山南地区环线公路的西段，全长120km，集交通、外交、军事于一体。由于公路位于高寒、新构造运动强烈的地区，特殊的地质背景、气候因素和地理环境，为该地区地质灾害的发生孕育了良好的条件。公路沿线的地质灾害主要有泥石流、滑坡、坍岸等，各类地质灾害影响公路总长7248m，其中泥石流42条，滑坡1处，坍岸12处。各类地质灾害对公路的建设和运营构成了极大的危害，针对各类地质灾害发育的特点。结合当地的环境和公路的等级要求，提出了切实有效的治理措施。

The Geological Disasters along the Langkazhi-Luoza Road in Tibet

The Langkazhi-Luoza Road is the west part of the ring road of Shannan district in Tibet, which is 120 km long. It is of functions are transportation, diplomacy and military affairs. The road is located in the tableland, chilliness and intense neotectonic movement area. There are many geological disasters due to the geology background, special climate and geography environment. For example, geological disasters such as debris flow, landslide and flow disaster occur along the Langkazhi-Luoza road, which threaten the safety of the road for 7248 meters long. They are 42 debris flows, 1 landslide and 12 slope collapses. According to the characteristics of the geological disasters, the local environment and the road grade, some effective measures to control these hazards are presented in this paper.