| The harmful geology structure under the freeway is a ground problem existing in the freeway construction in the loess region, and it mainly results in the collapse of the roadbeds and the slopes. Directed against this, based on the Baiyin-Lanzhou freeway construction project, the paper analyzes how these harmful geology structure was formed and what harmfulness it will bring to the freeway, discuss the usage of the exploration technology to the harmful geology structure in this project, and evaluates the results of the exploration. According to the calculate results of the compressive arch theory and the stress diffusion law, the author in this paper puts forward the rules and the methods of treating the harmful geology structure, and makes the in situ measurements. The test result shows that the treating method put forward in this paper is feasible. |
