The Model Analysis of Rock Falls and Countermeasures in MaZhao Expressway

The expressway of Maliuwan to Zhao tong (Mazhao expressway for short) was built in mountain area of Yunnan province, the geological structure and terrain of which is very complicated, and rock falls always happened, causing great damage. In order to find the countermeasures, the project team did a lot of field work along the expressway. The paper analyzed causes of rock falls, suggesting that the rock falls should be divided into three classes, and bring forward relevant engineering prevention and maintenance method.