浅谈路基挖方施工方法及注意事项（Discussion on construction methods and precautions of subgrade excavation）.doc

浅谈路基挖方施工方法及注意事项（Discussion on construction methods and precautions of subgrade excavation） Discussion on construction methods and precautions of subgrade excavation Jin-ping song (black dragon jianglongjie municipal rail transit engineering co., LTD., heilongjiang Harbin 150000) [abstract] with the improvement of highway grade, the development of high-grade highway has higher and higher quality requirements for roadbed. The construction method of excavated roadbed chooses direct relation To construction progress and engineering quality. This paper discusses the construction of excavation roadbed. [key words] roadbed excavation; Construction; Matters needing attention One, the introduction With the improvement of highway grade, the development of high-grade highway, the quality of roadbed Its getting higher and higher. Excavation roadbed is an important part of subgrade engineering As the saying goes, it is a good way to go down the road, to catch a bridge, which means people have been right since ancient times The Chinese side is very important. The excavation roadbed has its distinct characteristics, the roadbed appears Most of the diseases occurred in the road cut, such as landslide, collapse and fall Stone, subgrade, etc. If the construction plan is not reasonable, the slope is too steep and abandoned It is too close to the square, grass slope planting, protecting face paving and retaining wall construction not in time, platoon Water bad, etc., can cause the slope of the road to be unstable, landslide, severe and even affect the whole The project progress, this is the problem which often appears in the excavation roadbed construction. And therefore should be To understand these characteristics and to carry out all-round management of subgrade excavation projects. The subgrade The selection of construction method is directly related to the construction progress and quality. In this paper, This paper discusses the construction of roadbed excavation. Ii. Preparation