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用推土机进行平田整地施工作业,首先要做好田面规划工作,在田面规划的基础上,进行地块测量,断面设计。这样,不仅使操作人员对地形概貌有全面、明确、直观的了解,同时可以根据填、挖高差,按推土机经济运距确定铲运土层方向和推铲顺序。以达到工效高、油耗低、成本低。地块规划是指田面的长、宽和纵横坡度的确定。一般自然坡度在1～3%时,为了适于机耕、机播、灌溉和省工,通过实践和计算,推土机平整的田面宽度以40～60米为宜,但不得窄于30米;地块长度应在150米以上;地块的横坡可定为1/300～1/400。地块的纵坡应根据地形条件和灌溉情况而定,地块自
With bulldozers for land preparation work, first of all to do a good job of field planning, field planning based on the plot measurement, section design. In this way, the operator not only has a complete, clear and intuitive understanding of the topography of the terrain, but also can determine the direction of the shovel soil and the sequence of shoveling according to the economic distance between the bulldozer and the filling and excavation elevation. To achieve high efficiency, low fuel consumption, low cost. Land plan refers to the length, width and vertical and horizontal slope of the field to determine. In general, when the natural slope is between 1% and 3%, in order to be suitable for machine-operated, machine-borne, irrigated and labor-saving, the width of the bulldozer shall be 40-60 meters, but not narrower than 30 meters by practice and calculation. Length should be more than 150 meters; plot of slope can be set for 1/300 ~ 1/400. Landslide should be based on the topography and irrigation conditions, the plot from