Method and product thereof for in-situ fabrication of embankment surface structure using river and lake dredging sediment

Abstract

The invention belongs to the technical field of subgrade and slope protection construction in geotechnical engineering, and more specifically relates to a method for making bank protection embankment structures in situ by using river and lake dredging bottom mud and its products. In this method, the pretreated river and lake dredging sediment is directly laid on the slope, and the mixed material is pressed in situ by a mold loaded on the roadbed construction machinery equipment, wherein the mold uses the inherent power device of the roadbed construction machinery equipment The river and lake dredging sediment mixed material is in-situ pressed to make holes to prepare a revetment embankment structure with a porous structure, and the structure and the slope are pressed into a whole. This method combines the embankment structure fabrication and paving Combined into one step, it not only saves the step of transporting the sludge to landfill, but also saves transportation costs and land resources compared with the traditional method of transporting the sludge to make blocks and then transporting it back to the slope for paving , Improve the construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of subgrade and slope protection construction in geotechnical engineering, and more specifically relates to a method for making bank protection embankment structures in situ by using river and lake dredging bottom mud and its products. Background technique [0002] With the development of urban construction and the increasing shortage of land resources, and the improvement of environmental protection awareness, it is difficult to continue to transport and landfill a large number of river and lake dredging sediments generated in water environment improvement projects. This is because the existing rivers and lakes There are the following disadvantages in the landfill disposal of the dredged sediment: 1. It needs to occupy a large amount of land; 2. When some polluted sludge is landfilled, strict anti-seepage measures must be taken, and improper disposal may cause environmental hazards such as polluting groundwa...

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Problems solved by technology

[0002] With the development of urban construction and the increasing shortage of land resources, and the improvement of environmental protection awareness, it is difficult to continue to transport and landfill a large number of river and lake dredging sediments generated in water environment improvement projects. This is because the existing rivers and lakes There are the following disadvantages in the landfill disposal of dredged sediment: 1. It needs to occupy a large amount of land; 2. When some polluted sludge is landfilled, strict anti-seepage measures must be taken, and improper disposal may cause environmental hazards such as polluting groundwater; 3. The construction investment of the sludge landfill is large, and it is necessary to prevent the danger of dam failure; 4. The sludge landfill has an impact on the value of the surrounding land, which is likely to cause group incidents of environmental protection issues

However, further studies have shown that this type of existing disposal scheme still has the following outstanding deficiencies: on the one hand, the production from sediment to revetment cannot be completed in situ on the river and lake site, and a lot of transportation costs need to be wasted; on the other hand, the current Even if there is a method that uses molds to make revetment embankment structures such as revetment blocks, this method still needs to be maintained for several weeks in the factory after the revetment embankment structure is manufactured in the mold. Transported back to the revetment embankment for paving, the production cycle is very long, the efficiency is very low, and a lot of land resources are wasted

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