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Method for in-situ manufacturing of shore protection embarkment face structure by means of river and lake dredging bottom sediment and product thereof

A surface structure and bottom mud technology, applied in infrastructure engineering, water conservancy projects, coastline protection, etc., can solve the problems of wasting transportation costs, low efficiency, and inability to complete bottom mud to revetment in situ

Active Publication Date: 2020-10-20
浩华环境科学有限责任公司
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  • Abstract
  • Description
  • Claims
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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

Method used

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  • Method for in-situ manufacturing of shore protection embarkment face structure by means of river and lake dredging bottom sediment and product thereof
  • Method for in-situ manufacturing of shore protection embarkment face structure by means of river and lake dredging bottom sediment and product thereof
  • Method for in-situ manufacturing of shore protection embarkment face structure by means of river and lake dredging bottom sediment and product thereof

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Experimental program
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Effect test

Embodiment 1

[0082] like figure 2As shown, to carry out on-site and in-situ fabrication of revetment embankment structure for the dredged sediment of a river and lake, the dredged sediment of the river and lake is firstly pretreated, including the following steps:

[0083] (1) On-site pretreatment of dredged sediment of rivers and lakes is carried out to obtain mixed materials of dredged sediments of rivers and lakes for making embankment structures. Specifically follow the following sub-steps:

[0084] (1-1) Use a movable sediment separator to separate the available medium-coarse sand to obtain medium-coarse sand and the river-lake dredging sediment from which the medium-coarse sand has been separated;

[0085] (1-2) Add heavy metal solidifying agent cement to the dredged sediment of rivers and lakes where the medium and coarse sand is separated to solidify the unstable heavy metal ions, complete the harmless treatment of the sludge, and obtain the river and lake after the harmless trea...

Embodiment 2

[0092] Adopt the method of embodiment 1 to obtain the dredging bottom mud mixed material used to make the revetment embankment surface structure near the river and lake embankment, and lay the mixed material on the river and lake embankment after the leveling of the steel wire mesh is laid in advance in the vertical and horizontal directions slopes, such as Figure 5 The drum-shaped mold integrated on the excavator head is shown to make the revetment embankment structure.

[0093] like Figure 5 As shown, the mold is a drum-shaped mold, including a drum 4 and several clamping rods 3 fixedly connected to the surface thereof; the clamping rods 3 are cylinders with a diameter of 20 mm and a length of 50 mm. Some excavator long arms are connected by spherical hinges to realize the integrated docking of the two. When in use, the mold is moved to the surface of the river and lake dredging and sediment mixed material used to make the embankment structure, and the excavator is contr...

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Abstract

The invention belongs to the technical field of roadbed slope protection construction in rock-soil engineering, and particularly relates to a method for in-situ manufacturing of shore protection embarkment face structure by means of river and lake dredging bottom sediment and a product thereof. The method comprises the steps that pretreated river and lake dredging bottom sediment is directly laidon the slope, a mold loaded on an embarkment construction machine is adopted for performing in-situ pressing on mixing materials, the mold adopts an intrinsic power device of the embarkment construction machine for performing in-situ pressing hole forming on the river and lake dredging bottom sediment mixing materials, the shore protection embarkment structure of the porous structure is manufactured and obtained, the structure and the slope are pressed into a whole, the method integrates the step of shore protection embarkment structure manufacturing and the step of laying, and the step of sediment outward transport filling treatment is omitted. Compared with a traditional method that sediment is transferred out to manufacture building blocks, and then transferred back to the slope surfacefor laying, the transportation cost and land resources are greatly saved, and the construction efficiency is improved.

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...

Claims

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Application Information

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IPC IPC(8): E02B3/12E02D15/02
CPCE02B3/12E02B3/121E02B3/128E02D15/02E02D2250/0007
Inventor 江东
Owner 浩华环境科学有限责任公司
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