土方回填请求(国外英文资料).doc

土方回填要求(国外英文资料) Land reclamation technical requirements Abstract; (1) artificial return The base of the pit (trough); Before filling the soil, it should clean up the ground hole and the garbage in the bottom of the ditch. The backfill of the groove must be cleaned up to the base level, and the loose dirt, mortar and pebbles will be cleaned up. Check the soil; If the water content of the reclaimed land is in the control range, such as the high water content, it can be used for the measures such as turning loose, cooling or blending into dry soil. If the moisture content of the backfill soil is low, the measures such as sprinkling water and moistening can be adopted. 3 layering and raking; The reclaimed land should be spread out and rammed. The thickness of each layer should be determined according to the soil quality, the requirement of the compactness and the performance of the machine. The average frog rammer has a thickness of 200 ~ 250mm per layer. Manual tamping no more than 150mm. Each layer is spread out and then rakes. To rammer the chamber of secrets; (1) the backfill soil rammed at least three times. The rammer should be rammed, rammed and intersected. And the so-called tamping method, which is strictly forbidden to water the soil. (2) when the deep shallow pit is connected, the deep foundation pit should be filled first, and then the shallow base hanger will be filled with the shallow foundation pit. If it is necessary to consolidate, the contact should be in a trapezoid and not to be used for tamping. The upper and lower gaps are not less than 1.0 m (3) the backfill of the pit shall be carried out at the same time as it is opposite or around. There is not too much difference between the two sides of the foundation wall, so as not to push the wall out. Longer trench walls should be supported by internal measures. (4) to refill the heart and trench, to prevent the displacement of the Central Line of the pipe or damage the pipe, and the application of artifi