A technical method for continuous strong drainage combined with compaction soft foundation treatment

Abstract

The invention relates to a continuous forced drainage and compaction combined soft foundation treatment technical method. According to the continuous forced drainage and compaction combined soft foundation treatment technical method, spring soft downcast pipes are transversely arranged at a certain intervals in a certain depth range inside a soil mass according to a reinforcing depth of dredger fill and a soil mass permeability coefficient, both ends of the spring soft downcast pipes are connected with a vacuumizing device by sealing devices and a transverse drainage system is formed inside the reinforced soil mass to carry out forced drainage; after the groundwater level of the field is descended to the position at a distance of 2 to 4m from the ground, drainage consolidation of a foundation is accelerated by repeated variable-energy compaction. The drainage system used by the method is arranged inside the reinforced soil mass; a drainage effect is obvious; in the compaction construction, drainage is synchronously carried out; dissipation of an excess pore water pressure caused by compaction is greatly accelerated; quench time of compaction is shortened; combination of the forced drainage and dynamic compaction technical advantages is realized; the continuous forced drainage and compaction combined soft foundation treatment technical method has the advantages of short construction period, good reinforcing effect, low cost, resource saving and the like.

Description

technical field [0001] The invention belongs to the design and construction technology of soft soil foundation reinforcement treatment in civil engineering, and the soft foundation treatment method of sea reclamation and land reclamation, and particularly relates to a permeability coefficient greater than 10 formed by sea reclamation and land reclamation. -6 A new technology for foundation reinforcement treatment of cm / s dredging soft soil (mainly saturated silt, silt, silty clay and muddy soil with silt interlayer, etc.): a continuous strong drainage combined with compaction soft foundation treatment Technical method. Background technique [0002] In order to alleviate the constraints of land resources on coastal economic development, many coastal areas in my country have formed land areas through land reclamation. The dredger fill is mainly composed of silt, silt, silty clay and silty soil. The original structure of the soil is destroyed during the filling process, formi...

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Problems solved by technology

However, the dewatering and dynamic compaction construction of this method cannot be carried out synchronously, and the multiple insertion and extraction of pipes increases the workload and cannot discharge the ultra-static pore water produced in the dynamic compaction process in time, prolonging the interval between the two compactions; at the same time Repeated use of water flushing method to plug and unplug downwater pipes causes surface soil soaking and deep soil disturbance, which artificially increases the difficulty of construction

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