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软土地区临江大面积深基坑采用拱形水泥土加刚架式钻孔桩空间组合支护结构作为挡土防渗支护体系，可充分利用桩的空间组合效应，发挥水泥土抗压强度高的性能，其结构形式新颖、受力合理、挡土防渗安全可靠，应用在软土地区不能采用锚杆和内支撑的狭窄场地的大面积深基坑支护工程中，具有独特的优越性。
The large-area deep excavation of Linjiang in soft soil area adopts the spatial composite support structure of arched cement soil and rigid-frame bored pile as the retaining system of retaining soil, which can make full use of the spatial combination effect of the pile and exert the compression resistance of cement and soil. The high-strength performance is novel in structure, reasonable in stress, and safe and reliable in earth-retaining and seepage-proof. It is used in a large-area deep foundation pit support project in a soft soil where narrow anchorage and internal support cannot be used. Superiority.