Treatment method combining mechanical pressing, compacting, draining and consolidating of soil body with digging, modifying and strengthening of original soil

Abstract

The invention discloses a treatment method combining mechanical pressing, compacting, draining and consolidating of a soil body with digging, modifying and strengthening of original soil. The treatment method is characterized by including the following steps: 1) digging out the undisturbed soil of a project, adding a stabilizer in proportion, performing mixing in a blender to form a modified soil,pouring the fluid modified soil (a mixture) to a construction area, and spreading the mixture for leveling; and 2) using a modular soil-body pressing forming device for pressing, compacting, drainingand consolidating the soil body to allow the stabilizer and the soil body to interweave with, squeeze and mix with each other, so as to achieve the effects of modifying and strengthening the soil body to reinforce the soft soil body of the project. The modular soil-body pressing forming device comprises top frames, pressing forming modules and soil-body strength measuring devices, wherein each pressing forming module comprises a plurality of convex bodies. The treatment method can rapidly drain, squeeze and form the soil body and is especially suitable for the drainage and consolidation of soft soil bodies with high water contents, such as sludge, float sludge, drift sand soil, backfill soil for hydraulic fill sand, river levees, lakes and dams.

Description

technical field [0001] The invention relates to the field of foundation reinforcement treatment, in particular to the field of reinforcement treatment of soft soil foundations, in particular to a method for mechanically pressing, compacting, draining and consolidating soil combined with original soil excavation for modification and enhancement. Background technique [0002] The soil structure is generally composed of solid matter, liquid water and air. Different mixing ratios of various substances produce unequal pressure bearing capacity. When the applied pressure is greater than the bearing pressure of the soil body, it will be compressed and cause lateral movement and compression. Settlement requires artificial changes to the mixing structure ratio of the original soil. Under the action of external pressure, the compactness between the solid particles in the soil is increased, and the drainage material set in the soil is used to discharge liquid water and The channel of t...

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Problems solved by technology

The above-mentioned drainage consolidation method has a very long construction period, usually six months to one year to complete, so the construction cost is very high and the efficiency is very low

[0004] The above drainage consolidation method is only suitable for large area construction

Moreover, since the height of the piled load is limited, it cannot be applied to occasions with high load-bearing requirements for soil

[0005] In addition, the bearing capacity of the foundation treated by the surcharge preloading method is low, and the post-construction settlement is large. Therefore, composite reinforcement such as sand piles, powder spray piles, mixing piles, and prefabricated pipe piles are still needed in the future.

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