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.