Testing results have demonstrated that bearing capacity of each anchoring layer conform to requirements of design and with large margins of safety,proved that application of anchor bolt supporting is feasible in soft plastic soils.

Analogue analysis for relationship between leaking water amount and settlement of tunnels in soft soil stratum;

The application of deep-mixing pile water-resisting curtain in soft soil stratum construction;

A study on the secant pile endosure structure techology in soft soil stratum of Shanghai;

The application of the combined pile and anchor retainingstructure for deep excavation engineering in soft soil;

Based upon analysis of overturning failure of composite soil nailing wall retaining system of foundation pit of one office in Suzhou one conclusion is obtained that foundation pit is subject to instable when soil mass work encounter soft soil layer and with high water content utilizing composite soil nailing wall for foundation pit support.

The technical process of tamping macadam compaction pier is as follows: firstly form pores artificially,then replace the soft soil with the scree and tamp to close-grained scree pier by layered power.