地质条件(国外英文资料).docVIP

地质条件(国外英文资料) Two. General survey of engineering geology and hydrogeology along the line Metro line three to avoid the basic hilly area, the Yangtze River floodplain area along the Yangtze River belong to grade I terrace area, low floodplain area Gang, gang, WA region and the Qinhuai River depression between the valley plain, landform by basement structure and river downcutting control complex. Following each site membership geomorphological zones and main geological characteristics: 1) design starting point to the forest station (AK0+000 to AK0+302) On the ground elevation landform, 30 ~ 40m, flat terrain, small fluctuation. The surface lithology for artificial fill, gray brown to grayish yellow, loose rubble, containing brown plant roots, thickness of less than 2m, the engineering geological properties, the alQ3 under the Xiashu clay, silty clay, gray yellow to brown to be compact, hard plastic, iron manganese nodules and calcium nodules. The engineering geological properties is good, the Pukou formation of Lower Cretaceous (K2P) silty mudstone, the weathering layer thickness of 3 ~ 4m, the lower part is strong to weak weathered rock, good integrity. Groundwater is not developed. According to the circuit design, engineering type bridge, embankment, embankment stability, filling the appropriate before excavation artificial embankment, bridge pile foundation should be adopted, with the Pukou formation of the Cretaceous (K2P) used as the bearing stratum of silty mudstone. 2) forest station to torch South Station (AK0+302 to AK2+840) The topography is the hillock area and the hillock Valley, the ground elevation is from 24 to 54m, the landform is eroded by the later period water, the post gap is distributed alternately, and the topography fluctuates greatly. On the upper alQ3 lithology Xiashu clay, silty clay, gray yellow to brown to be compact, hard plastic, iron manganese nodules and calcium nodules, with weak swelling, post secondary valley between Xiashu soil, thic