Rigid grid structure for constraining sludge flow and using method thereof

Abstract

The invention discloses a grid structure for reinforcing sludge and a using method thereof and belongs to the technical field of sludge treatment. The technical key point is that: the structure comprises at least two vertical supporting pieces, wherein a plurality of connecting pieces are arranged among the vertical supporting pieces; and the vertical supporting pieces and the connecting pieces form a rigid grid structure. The method comprises the following steps of: (1) prefabricating the rigid grid structure; (2) calculating distribution density and range of the rigid grid structure according to depth, position and range of the sludge of which flow is needed to be constrained; and (3) pressing the prefabricated rigid grid structure in the sludge of which the flow is to be constrained. The invention aims to provide a grid structure with a simple structure for rapid sludge treatment, and after treatment, the sludge bearing capacity is improved, and sludge compression settlement is reduced; moreover, the structure is used for reinforcing the sludge.

Description

technical field [0001] The present invention relates to a structure for sludge handling, and more particularly, to a rigid grid structure for restricting the flow of sludge. The invention also relates to a method of using the spatial grid structure. Background technique [0002] There are generally 30 to 40 meters of silt or muddy soil in the strata of coastal areas. Soft soil is generally saturated, flow-plastic, micro-bedding development, containing shell fragments, see humus, mainly composed of silt, muddy silty clay, or muddy clay. The engineering properties of soft soil have the following characteristics: (1) high natural water content (2) large natural void ratio (3) high compressibility (4) weak permeability (5) small consolidation coefficient (6) small cohesion ( 7) Low bearing capacity (8) Strong thixotropy, etc. In the treatment of soft soil, the main measures are as follows: [0003] (1) It is said that mixing piles, rotary grouting piles, gravel piles, CFG pi...

AI Technical Summary

Problems solved by technology

[0008] (1) The cost of silt reinforcement is high, but the bearing capacity of the foundation is not greatly improved;

[0009] (2) The sludge reinforcement takes a long time. If the surcharge preloading process is adopted, the treatment time is 1 to 3 years to achieve the effect of discharging the pore water in the sludge;

[0010] (3) The reinforcement depth is effective. For example, the reinforcement depth of vacuum preloading is about 10 meters, and the reinforcement depth of ordinary mixing piles is about 15 meters. This will cause the weak underlying layer to fail to meet the requirements in some cases;

[0011] (4) The post-construction settlement is large, usually manifested as excessive surface settlement, and cracked pipelines seriously affect the use of buildings and structures after they are completed

[0012] (5) Due to the large ground subsidence, the foundation of the building is exposed, which is very unfavorable to the stress of the foundation of the completed building

[0013] (6) For road and railway subgrades, large post-construction settlement will seriously affect driving safety

Images