西藏浪卡子至洛扎公路沿线地质灾害与防治

浪卡子至洛朴公路是西藏山南地区环线公路的西段,全长120 km。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、气候因素和鹅理环境,为该地区地质灾害的发育提供了良好的条件。公路沿线的地质灾害主要有泥石流、滑坡、坍岸(水毁)等,各类地质灾害影响公路总长7 248m,其中泥石流42条,滑坡l处,坍岸(水毁)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,针片这些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。

Geological Disasters along the Lang kazi-Luoza Road in Tibet and their mitigation measures

The Lang kazi-Luoza Road is the west part of the ring highway of Shannan district in Tibet, which is 120 km long. This road plays an important role in transportation, diplomatic and military affairs. The road is located in cold regions at high altitude with intense neotectonic activities. There are many geological disasters due to the adverse geological background, special climatic and geographical environments. For example, many geological disasters such as debris flows at 42 sites, landslide at one site, and mountainous torrents at 12 sites along the Lang Kazi-Luoza road, seriously threatening the safety of the road with a length of 7 248 m. In accordance with the characteristics of the geological disasters, the local environments and the road grade, some effective and feasible measures methods are proposed for mitigating these disasters.