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1 Geotextile reinforced by soft soil 1. Introduction Geotextile known, it has high tensile strength, durability, corrosion resistance, texture, flexibility, bined with good sand, to form reinforced posite foundation, effectively increase the shear strength , tensile properties, and enhance the integrity and continuity of soil. Strengthening mechanism for the early 6039。s in the 20th century, Henri Vidal on the use of triaxial tests found a small amount of fiber in the sand, the soil shear strength can improve the image of more than 4 times in recent years, China39。s rock Laboratory workers also proved in the reinforced sand can effectively improve the soil39。s bearing capacity, reduce the vertical ground settlement, effectively overe the poor soil and continuity of overall poor performance. As with the above properties of reinforced soil and the characteristics of its low price, so the project has broad application prospects. Project Overview The proposed retaining wall using rubble retaining wall of gravity, the wall is 6 meters high, the bearing capacity of foundation soil required to 250kPa, while the basement geology from the top down as follows: ① clay to a thickness of to 2 meters saturated, soft plastic。 ② muddy soil, about 22 24 meters thick, saturated, mainly plastic flow, local soft plastic。 ③ sand layer to a thickness of 5 to 10 meters, contai