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当前,随着科技的日益进步,各式各样的机械脱颖而出;对于土方开挖工程来说,目前主要采用的机械还是挖掘机,具体型号有125,180,225等,但挖掘机在挖掘基底土层时,存在容易扰动原状土层和平整度不好控制等问题。所以设计院在设计图纸时,说明中应明确规定,初械开挖土方,坑底必须保证预留200mm厚的土层用于人工开挖,且不得扰动土层原状结构。这给施工带来极
Currently, with the progress of science and technology, a wide range of machinery come to the fore. For the excavation of earthworks, the main machinery currently used is excavators. The specific models are 125,180,225, etc. However, when excavators excavate the foundation soil, There is easy to disturb the undisturbed soil and poor control of flatness and other issues. Therefore, the design institute in the design drawings, the instructions should be clearly stipulated that the early excavation of earthwork, bottom of the pit must ensure that reserved for 200mm thick soil for artificial excavation, and shall not disturb the original structure of the soil. This brings great construction