回填土技巧请求(国外英文资料).docVIP

回填土技术要求(国外英文资料) 3, earthwork backfilling, 3.1 operation conditions After the exterior wall is removed, the waterproof layer and the waterproof protection layer are finished. Before returning, the water in the foundation pit should be drained, garbage, silt, floating soil and so on. The parts of the chamber are not affected by the construction period, but can be carried out during the construction of the upper main body. 3.2 soil preparation In the abandoned soil, choose the earth source, and its soil USES clay or powder clay. No more than 30cm stone, organic waste, brick etc. 3.3 machines and tools preparation The construction equipment used for backfilling is like table 6-2-1. Table 6-2-1: construction equipment for backfilling The serial number Machine name The number of use one Frog hammer Two (2) The main ramming equipment 2 Human tamper four The tamping machine cant be tamped down with the compaction or the hammer 3 Wooden hammer eight 4 A cart 20 The level of transportation 5 drivers 1 loading 6 Forklift. 2 a loading 7 Dump truck 6 m The level of transportation 8 A small truck 10 two The level of transportation 9 A spade The 40 Whole and short distance transportation 3.4 technical preparation The contractor, technician and operator of the project are engaged in the technical background, and the project security personnel are in the background of the safety, forming a written record. The outer wall is marked with the thickness of the thickness of each layer, requiring no more than 300mm in thickness. Construction technology 3.2.1. When backfilling, strictly control the water content of the backfill soil, which is appropriate for holding the ball in a group and falling to the ground. 3.2.2. In order to control soil thickness, outside the wall thickness of each layer virtual earth mark, thickness of each layer virtual earth take 300-350 - mm, few mechanical tamping cannot reach place, with human tamper, virtual soil thickness is reduced, take 200-250 - mm. When