002机械挖土施工工艺(国外英语资料).doc

002机械挖土施工工艺(国外英语资料) Mechanical excavation 1 range The technological standards are applicable to the mechanical excavation of large pits (troughs), pipes and large areas of industrial and civil buildings and structures. 2 construction preparation 2.1 main machines and tools: 2.1.1 excavators are: excavators, bulldozers, scrapers, dump trucks and so on. 2.1.2 general machine has a spade (tip, flat two), trolleys, small white lines or 20 wire and steel tape and slope etc.. 2.2 operating conditions: 2.2.1 earthwork excavation, should be in accordance with the requirements of the construction program, the construction area of the ground, ground obstacles cleared and disposed of. Location of 2.2.2 buildings or structures or the location of the site of the control line (pile), the standard size of pile and the slot of the gray line, must pass the test; and after finishing pre screening procedures. 2.2.3 during the night construction, there should be adequate lighting facilities; in danger areas should be marked clearly, and reasonable arrangements for excavation order, to prevent excavation or excavation. When excavating the foundation pit and canal ditch with 2.2.4 water level, measures should be taken to reduce the water table according to the local engineering geological data. Generally down to the excavation surface of 0.5m, and then excavation. 2.2.5 construction machinery entering the site, the road, bridge and unloading facilities should be checked in advance, if necessary, for reinforcement or widening and other preparatory work. 2.2.6 earth moving machinery, according to the construction area of the terrain and the operating conditions, soil type and thickness, the total project amount and time into consideration, in order to be able to play to determine the efficiency of the construction machinery, good construction plan. 2.2.7 construction area running route layout should be determined according to the engineering work area size, mechanical properties, distance