县道九大线公路路基病害治理措施

县道九大线路基土质基本由粉质粘土和高液限粘性土组成，由于土质及排水不畅影响，路基出现翻浆冒泥的病害。通过采用石灰桩法挤密加固路基和石灰三合土改良路基治理病害，效果良好。阐述了这两种整治方案的原理、设计及施工方法，具体包括石灰桩法加固的桩径、桩长、布置方式和桩距，石灰三合土封层的范围、配比等，对类似工程有借鉴意义。

Treating Measures Against Damages to the Roadbeds of the Nine Main Highways of a County

The roadbeds of the nine main highways of the county basically consist of powdered clay and high-liquid-limit clayed soil. Owing to the effects of the poor earth quality and unsuccessful draining, the damage of being sodden and muddy happens to the roadbeds here and there. To overcome the damage, the lime-pile method is applied to densifying and consolidating the roadbeds,and lime three-in-one earth is used to reform the roadbeds. Both of the above-mentioned methods achieve very good re- sults. The principles,design, and construction methods of the two treating schemes, including the diameters, the lengths, and the lay-out of the lime piles,the inter-pile distance,and the range and mix ratio of the sealing layer ot lime three-in-one earth,are dealt with in the paper,which may serve as a useful reference for other similar projects in the future.